893.02 Fiber Optic Cable.
shall be provided in the base of the pedestal shaft. A cap for any exposed open end of a pedestal shaft shall be provided. The cap shall be of cast aluminum and of the nipple or tenon mounting type. INTELLIGENT TRANSPOR TATION SYSTEMS MATERIALS
893.01 General.
The following are the requirements for Intelligent Transportation Systems (ITS). These requirements may be supplemented or amended by the requirements given elsewhere in the proposal, on the Plans, and on the det ails in the Special and Standard Highway Drawings. Requirements as specified within these Specifications shall comply with the latest applicable editions of the National Electrical Code (NEC) (a.k.a. NFPA 70), the American Society of Testing and Materials (ASTM), the American National Standards Institute (ANSI), National Electrical Manufacturers Association (NEMA), National Fire Protection Association (NFPA), National Electrical Safety Code (NESC) (a.k.a. ANSI/IEEE C2), the Underwriter’s Laboratory Incorporated (UL), International Organization for Standardization (ISO), Telecommunications Industry Association (TIA), the International Telecommunications Union (ITU), Institute of Electrical and Electronics Engineers (IEEE), Electronic Industries Alliance (EIA) , the National Transportation Communications for ITS Protocol (NTCIP), and the applicable standards, specifications, and regulations of ALDOT. In case of conflict with cited Standard Publications and the Specifications, the requirements of the Specificati ons shall govern.
a.Compatibility . All ITS devices and equipment shall be fully compatible and integrated with the current version of: “ ALDOT’s Intelligent Transportation Systems software applications” (also known as ALDOT’s Advanced Transportation Management System or “ALGo ATMS ”); ALDOT’s ITS communications network; and, ALDOT’s communication network management system. All items that are required to complete the installation and ensure a fully functional and operational system shall be supplied by the Contractor. Items required but not listed shall be at no direct pay. All components supplied by the Contractor are the responsibility of the Contractor.
893.02 Fiber Optic Cable.
a.General.
1.Manufacturer Standards and Requirements. Each fiber optic cable shall meet all the following criteria:
a.Manufacturer shall be Certified in accordance with International Organization for Standardization ISO 9001.
b.Each cable shall meet the requirements of ANSI/Insulated Cable Engineers Association (ANSI/ICEA S -87-640) “Standard for Optical Fiber Outside Plant Communications Cable” (a.k.a. TIA -472D000) and United States Department of Agriculture (USDA) Rural Utilities Service (RUS) 7 Code of Federal Regulations (CFR) 1755.900.
c.Fiber opti c cable shall be factory tested and documented to pass and/or adhere to, and in accordance with, the following tests: Telcordia GR -20 “Generic Requirements for Optical Fiber and Optical Fiber Cable ” ASTM -D1248, Type II, Class C, Category 4, Grade 4 “Standard Specification for Polyethylene Plastics Extrusion Materials for Wire and Cable” ASTM -D1603 “Standard Test Method for Carbon Black in Olefin Plastics ” ASTM -D3895 “Standard Test Method for Oxidative -Induction Time of Polyolefins by Differential Scanning Calorimetry ”
893.02 Fiber Optic Cab le.
ASTM -D4565 “Standard Test Methods for Physical and Environmental Performance Properties of Insulations and Jackets for Telecommunications Wire and Cable ”.
d.Fiber optic cable shall also be factory tested and documented t o pass and/or adhere to, and in accordance with the most current ANSI/TIA/EIA -455 “General Requirements for Standard Test Procedure for Optical Fibers, Cables, Transducers, Sensors, Connecting and Terminating Devices, and other Fiber Optic Components” . Th e Fiber Optic Test Procedures (FOTPs) addenda, as they are applicable to the required fiber optic cable, are as follows: ANSI/TIA/EIA -455-3 “FOTP -3 Procedure to Measure Temperature Cycling Effects on Optical Fiber Units, Optical Fiber, and Other Passive Fi ber Components ” ANSI/TIA/EIA -455-25 “FOTP -25 Impact Testing of Optical Fiber Cables ” ANSI/TIA/EIA -455-28 “FOTP -28 Measuring Dynamic Strength and Fatigue Parameters of Optical Fibers by Tension ” ANSI/TIA/EIA -455-31 “FOTP -31 Proof Testing Optical Fibers by Tension ” ANSI/TIA/EIA -455-33 “FOTP -33 Optical Fiber Cable Tensile Loading and Bending Test” ANSI/TIA/EIA -455-37 “FOTP -37 Low or High Temperature Bend Test for Fiber Optic Cable ” ANSI/TIA/EIA -455-41 “FOTP -41 Compression Loading Resistance of Optical Fiber Cables ” ANSI/TIA/EIA -455-62 “FOTP -62 Optical Fibres - Part 1 -47: Measurement Methods and Test Procedures - Macrobending Loss ” ANSI/TIA/EIA -455-78 “FOTP -78 Optical Fibres - Part 1 -40: Measurement Methods and Test Procedures - Attenuation ” ANSI/TIA/EIA -455-80 “FOTP -80 Optical Fibres - Part 1 -44: Measurement Methods and Test Procedures - Cut-Off Wavelength ” ANSI/TIA/EIA -455-81 “FOTP -81 Compound Flow (Drip) Test for Filled Fiber Optic Cable ” ANSI/TIA/EIA -455-82 “FOTP -82 Fluid Pe netration Test for Fluid -Blocked Fiber Optic Cable ” ANSI/TIA/EIA -455-104 “FOTP -104 Fiber Optic Cable Cyclic Flexing Test ” ANSI/TIA/EIA -455-113 “FOTP -113 Polarization -Mode Dispersion Measurement for Single -Mode Optical Fibers by the Fixed Analyzer Method ” ANSI/TIA/EIA -455-175 “FOTP -175 Optical Fibres - Part 1 -42: Measurement Methods and Test Procedures - Chromatic Dispersion ” ANSI/TIA/EIA -455-176 “FOTP -176 Optical Fibres - Part 1 -20: Measurement Methods and Test Procedures - Fibre Geometry ” ANSI/ TIA/EIA -455-181 “FOTP -181 Lightning Damage Susceptibility Test for Fiber Optic Cables with Metallic Components ” ANSI/TIA/EIA -455-191 “FOTP -191 Optical Fibres - Part 1 -45: Measurement Methods and Test Procedures - Mode Field Diameter ” These industry standards listed above shall be of the most current active version. If a standard is withdrawn by the authorizing organization, then the superseding standard(s) shall apply. All fiber optic cable supplied and utilized on this project shall be from a single (o ne) United States (U.S.) resident manufacturer who can demonstrate that said manufacturer is regularly, and for a minimum of five (5) previous years (continuous), engaged in the production of each, every and all specified fiber optic cable(s) herein and sh all warrant that said cable(s) shall be produced utilizing the manufacturing processes for said cable(s) noted within this Specification.
893.02 Fiber Optic Cable.
All fiber optic cable(s) supplied and utilized shall be manufactured from U.S. made components only, with the exceptio n of aramid yarn. The Contractor shall notify the Engineer of the use of foreign aramid yarns at submittal. In the event that U.S. resident manufactured fiber optic cable is readily unavailable due to excessive lead time, as specified by the Construction Engineer, for production, the Contractor may submit, with or prior to the material submittals, a Non -U.S. based cable manufacturer cable meeting requirements to the Engineer for consideration of acceptance. The Contractor shall submit to the Engineer lett ers from U.S. based manufacturers documenting the excessive lead time.
2.Fiber Optic Characteristics. Each optical fiber shall be glass and consist of a doped silica core surrounded by concentric silica cladding. All fibers shall be sufficiently free of surface imperfections and inclusions to meet the optical, mechanical and environmental requirements as specified within the Specifications. The coating shall be dual layered, ultraviolet (UV) cured acrylate. The coating shall be mecha nically or chemically strippable without damaging the fiber. The required optical fiber grade shall reflect the maximum individual fiber attenuation, to guarantee the required performance of every fiber in the cable. Only single -mode all -dielectric fiber o ptic cables shall be used unless otherwise specified on the Plans. Optical fiber shall also meet the following criteria: PARAMETERS SINGLE -MODE VALUES Standards International Telecommunication Union (ITU) -T
G.652.D International Electrotechnical Commission (IEC) 60793- 2-50 Type B.1.3 Dispersion unshifted single -mode TIA 492 -CAAB Type Step Index Core Diameter 8.3 µm (Nominal) Proof Tensile Test 100 kpsi {0.69 GN/m² or 0.69 GPa} Operating Temperature Range -40°F to 158°F {-40°C to 70°C} OPTICAL SPECIFICATIO NS Attenuation (Maximum): @ 1310 nm -1625 nm (SM) @ 1550 nm (SM) ≤ 0.4 dB/km ≤ 0.3 dB/km Cut-Off Wavelength ( λcc) λcc ≤ 1260 nm Mode Field Diameter (MFD): Nominal range @ 1310 nm (8.6 µm – 9.5 µm) ± 0.6 µm Dispersion (Maximum): @ 1285 nm – 1330 nm @ 1550 nm ≤ 3.3 ps/(nm•km) ≤ 18 ps/(nm•km) Chromatic Dispersion, Zero Dispersion ( λo) 1300 nm ≤ λo ≤ 1324 nm Wavelength Zero Dispersion Slope (S o) So ≤ 0.092 ps/(nm²•km) GLASS GEOMETRY Cladding Diameter 125.0 µm ± 1.0 µm Core to Cladding Offset ≤ 0.8 µm Cladding Non -Circularity ≤ 1.0% COATING GEOMETRY Coating Diameter (OSP) 250 µm ± 15 µm
3.Cable Markings. Cable markings shall be indent printing with white characters on the outer jacket. The characters shall be approximately 3 mm in height and spaced to produce good legibility. The cable
893.02 Fiber Optic Cable.
shall be sequentially marked at 3 feet {0.91 m} intervals maximum. The length marks will not run through zero on any length of cable. The leng th markings are to be in feet. The maximum variance between the actual cable length and marked cable length is ± 1%. Each length of cable shall be marked with the following legend: “(Mfg. name) OPTICAL CABLE (Cable Description) (Mfg. month and year) (telecommunications headset symbol) ALDOT XXXF” where “XXX” denotes the number of fibers within the cable. Note: Special marking of “ALDOT XXXF” is not required if the individual reel cable length is less than 6,300 feet {1,920 meters}. No re- marking of c ables is allowed without prior approval by the Engineer.
4.Color Coding. Buffer tubes and individual optical fibers within those buffer tubes shall adhere to ANSI/TIA/EIA - 598-C “Optical Fiber Cable Color Coding ” as follows: 1 = Blue (BL) 2 = Orange (OR) 3 = Green (GR) 4 = Brown (BR) 5 = Slate (SL) 6 = White (WH) 7 = Red (RD) 8 = Black (BK) 9 = Yellow (YL) 10 = Violet (VI) 11 = Rose (RS) 12 = Aqua (AQ) where legend for above is: “fiber/tube number = color code (abbreviation)”. For cables containing more than 12 buffer tubes, use the color code shown above for tubes 1 through 12, and use stripes or tracers in conjunction with the standard color code for tubes 13 through 24. The colors shall be stable during temperature cycling and not subject to fading or smearing onto each other or into the gel -filling/water blocking material. Ensure colors do not cause fibers to stick together.
5.Outside Plant (OSP) Manufacturing. All optical fiber cables shall be outside plant cable and loose tube. Fiber cable shall contain the fiber count as shown on the Plans with 6 or 12 fibers per buffer tube as allowed for cable type (trunk, drop, etc.). A layer of aramid yarns, along with a t least one ripcord, shall be applied over the buffer tube bundle, producing the cable core. The cable core interstices and buffer tubes interstices shall be protected from water intrusion by water blocking material. Water blocking material shall be gel or dry; and, be designed to prevent the ingress of water. Water blocking material shall be non -hygroscopic, non -nutritive to fungus, electrically non -conductive, and homogeneous. Water blocking material shall also be free from dirt and foreign matter an d readily removable with conventional non -toxic solvents. Cable jacket shall be a circular extrusion medium density polyethylene (MDPE) of 1.3 mm minimum thickness with no bubbles or blisters and shall be suited for conduit, duct, direct burial and aerial lashing. Jacketing material shall be directly applied over the central tensile strength members and water blocking material. The buffer tubes shall have a 2.5 mm outer diameter. Each tube shall have water blocking material as specified above. Buffer tu bes shall be wrapped around the central strength member in reverse oscillation manner (a.k.a. S -Z spanning) so that the cable may be broken into and fibers selectively broken out without having to cut the entire cable.
6.Quality Assurance and Packing. The cable shall be packaged wound on spools or reels. Each package shall contain only one continuous length of cable. The packaging shall be as to prevent damage to the cable during shipping and handling. When the cable length creates a reel weight exceedi ng 800 lbs. {362.87 kg}, the manufacturer shall be required to supply the cable on a large wooden reel and the reel shall be lagged with wooden staves. The cable shall be covered with a thermal wrap. The outer end of the cable shall be securely fastened to the reel head so as to prevent the cable from becoming loose in transit. The inner end of the cable shall project a minimum of 10 feet {3.0 m} into a slot in the side of the reel or into housing on the inner slot of the drum, in such a manner to make i t available for testing. An arbor hole of 1.5 inch {3.8 cm} minimum is required. Test tails shall be at least 6.5 feet {2.0 m} and accessible from the outside of the reel. The inner end shall be fastened so as to prevent the cable from becoming loose dur ing shipping and installation.
893.02 Fiber Optic Cable.
End seals shall be applied to each end of the cable to prevent moisture from entering the cable. Reels shall be permanently marked with an identification number that can be used by the manufacturer to trace the manufacturing history of the cable and the fiber. Each reel shall be plainly marked to indicate the direction in which it should be rolled to prevent loosening of the cable on the reel. Documentation shall accompany each reel. The documentation shall indicate the att enuation of each cable fiber in dB/km. The attenuation shall be measured at 1310 nm and 1550 nm for single - mode. Each reel shall have stenciled on the reel or a weatherproof reel tag firmly attached identifying (at a minimum) the following: • Name of Cable Manufacturer and Address • Type Fiber Optic Cable • Number of Fibers • Length of Cable (ft/m) • Reel Number • Direction of Rotation • “DO NOT LAY REEL ON SIDE” A cable reel data sheet (a.k.a. manufacturer’s certified test report) shall accompany each cable reel. The following information (at a minimum) shall be included: • Name of Cable Manufacturer and Address • Cable Number • Reel Number • Year of Manufacture • Factory Order Number • Customer Purchase Order Number • Type Fiber Optic Cable • Number of Fibers • Measured Attenuation of Each Fiber (for lengths > 1000 m) • Ordered Length (ft/m) • Actual Shipped Length (ft/m) This cable reel tag and data sheet are to be delivered to the Engineer as defined in the Construction Section of this Specification.
b.Trunk Cable. All optical fiber trunk cables shall be outdoor rated cable (non -plenum) and loose tube. Trunk cable shall contain the fiber count with 12 fibers per buffer tube as shown on the Plans. Trunk fiber cable shall have a maximum pulling tension rating of 600 lbf { 2700 N} or as recommended by the manufacturer. Trunk cable must be able to withstand a minimum bending radius of 10 times the cable diameter under no load and 20 times the cable diameter under load without affecting the performance characteristics of the cable. Maximum pulling tension shall be 600 lbf {2700 N} during installation (short -term) and 180 lbf {810 N} long -term installed or as recommended by manufacturer.
c.Drop Cable. All optical fiber drop cables shall be outdoor rated cable (non -plenum) an d loose tube. Fiber drop cable shall contain the fiber count of 6 or 12 fibers per buffer tube as shown on the Plans. In addition to the GENERAL requirements previously listed, each drop cable shall also meet the requirements of ANSI/ICEA S- 110-717, “Standard for Optical Fiber Drop Cable” (a.k.a. ANSI/TIA - 472F000). Drop cable shall be sheathed with flame retardant polyvinyl chloride (PVC) and shall be an all - dielectric manufacturing. The nominal jacket thickness shall be 1.4 mm and shall be applied directly over the tensile strength member(s). The PVC jacket shall contain carbon black to provide ultra -violet (UV) protection and shall not promote the growth of fungus. The cable shall meet the requirements of the NEC Section 770 for Non -Plenu m Applications – Applicable Flame Tests: ANSI/UL 1666 and shall be rated OFNR (optical fiber nonconductive riser).
893.03 Fiber Distribution Units (FDU), Connectors, and Fan -Out Kit.
Drop cable with 12 fibers or less shall be a single buffer tube with a maximum pulling tension rating of 300 lbf {1350 N} during installatio n (short -term) and 90 lbf {400 N} long -term installed or as recommended by manufacturer. Drop cable with more than 12 fibers shall have multiple buffer tubes of 12 with a maximum pulling tension of 600 lbf {2700 N} during installation (short -term) and 180 lbf {810 N} long -term installed. The buffer tubes shall have a 2.5 mm outer diameter. Each tube shall be dry with either water blocking yarn, powder, or liner. Buffer tubes shall be wrapped around the central strength member in a reverse oscillation ma nner (a.k.a. S -Z spanning) so that the cable may be broken into and fibers selectively broken out without having to cut the entire cable.
d.Armored Cable. All optical fiber armored cables shall be outdoor rated cable (non -plenum) and loose tube. Armored cable shall contain the fiber count with 12 fibers per buffer tube as shown on the Plans. Armored cable shall also contain a corrugated steel tape armor located between two MDPE jackets (i.e., double -jacketed). Armored fiber cable shall have a maximum pulling tension rating of 600 lbf {2700 N} or as recommended by manufacturer. Armored cable must be able to withstand a minimum bending radius of 10 times the cable diameter under no load and 20 times cable diameter under load without affecting the performance characteristics of the cable. Maximum pulling tension shall be 600 lbf {2700 N} during installation (short -term) and 180 lbf {810 N} long -term installed or as recommended by manufacturer. Armored fiber optic cable with messenger wire manufactured wi thin the cable shall NOT be allowed for aerial cable. Similarly, no metallic central strength member serving as a messenger wire shall be allowed for aerial cable. Aerial fiber optic cable may be armored or not armored.
e.Aerial Slack Bracket. Aerial S lack Bracket (a.k.a. snowshoes) shall be used for the management of aerial fiber optic cable slack storage loops (a.k.a. maintenance coils). The aerial slack bracket shall protect the minimum bending radius of the fiber optic cable. The aerial slack brac ket shall be nonconductive, polymer based, ultra -violet (UV) treated plastic, rated twenty- years in the outdoor environment. Stainless steel hardware shall be used for attaching this aerial slack bracket to the messenger wire. Predrilled holes shall be i ncluded along the bracket for securing the fiber optic cable to the bracket.
f.Fiber Optic Tag.
1.General. All fiber optic cabling shall be labeled with a unique identification in a permanent and consistent manner that is approved by the Engineer prior to installing fiber cable. The Engineer shall provide the Contractor with the identifications to be used. All fiber cable tags shall be of a material designed for long term permanent labeling of fiber optic cables and shall be marked with permanent ink o n non -metal types or embossed lettering on metal tags. Metal tags shall be manufactured of stainless steel. Non -metallic tags shall be nonconductive, polymer based, ultra -violet (UV) resistant, rated twenty -years in the outdoor environment, and durable t o extreme weather conditions. Cable tag and label materials shall be approved by the Engineer.
2.Aerial Fiber Cable Labeling. Aerial fiber optic cable tag shall be nonconductive, polymer based, ultra -violet (UV) resistant, rated twenty -years in the ou tdoor environment, and durable to extreme weather conditions. Aerially -mounted fiber optic cable shall be marked with a yellow retroreflective tag with black print containing the graphic system as shown on the Plans. The tags shall make the cable identi fiable as ALDOT fiber when viewed from ground level. The black on yellow graphic system shall not fade, peel or chip. See corresponding Construction Section for fiber optic cable label “ proof check ” sample and approval requirements.
893.03 Fiber Distribu tion Units (FDU), Connectors, and Fan -Out Kit.
a.General.
1.Distribution Hardware. The following material specifications covers Fiber Distribution hardware requirements from the headend and hub, primary fiber distribution unit (PFDU) to secondary fiber distribution unit (SFDU)
893.03 Fiber Distribution Units (FDU), Connectors, and Fan -Out Kit.
which are utilized within the individual cabinets and communication closets within buildings or within hub buildings.
2.Fiber Optic Connectors. Fiber Optic Connectors shall be Type SC for single -mode applications unless specified otherwise on the Plans or in these Specifications; and, shall meet the requirements of TIA/EIA -604, “Fiber Optic Connector Intermateability Standards (FOCIS) ” along with the associated test document addendum FOCUS- 3. Fiber optic connectors shall be Telc ordia GR -326 certified and must meet applicable TIA/EIA -4750000, IEC 61754, and JIS C5973 standards. Connector and adapter plug bodies for single -mode fiber optic cable shall be blue in accordance with color coding requirements of TIA/EIA -568-C.3 “ Optical Fiber Cabling Components Standard ”. Fiber optic connectors shall not exceed 0.50 dB insertion loss per connector pair across a single fiber regardless of whether field or factory, mechanical or heat cure epoxy terminated.
b.Primary Fiber Distribution Unit (PFDU). Primary Fiber Distribution Unit (PFDU) shall be utilized within the primary hub and headend facility that is in support of the hub distribution system and the primary network. This point in the system allows the distribution of s ignals directly to the network electronics via a jumper/patchcord cable management system.
1.The PFDU is characterized as modular, powder coated aluminum.
2.The termination method for PFDU shall be field termination of inbound fiber cable and patchcord method of connectivity to other outbound cables and network electronics. PFDU may also use pre -terminated factory connector build- outs (Pre -terminated Connector Assemblies) with adapter ports preinstalled as an alternative method.
3.The PFDU shall be mountable wit hin a 19 inch {482.6 mm} EIA -310 rack or bay and have a typical dimension of approximately 8 inches {203.2 mm} high (i.e., 4 -U), by 19 inches {482.6 mm} wide by 18 inches {457.2 mm} deep.
4.The PFDU hardware shall be easily adaptable for bay routing of patch cords and cable.
5.Each PFDU maximum connector capacity shall be 72 or 144 fibers, 12 adapter panels.
6.The maximum number of adapters per build- out shall be twelve.
7.PFDU may include factory connector build- outs with adapter ports preinstalled.
8.PFDU shall manage splice trays capable of handling the PFDU maximum capacity of fiber splices.
9.All PFDU hardware shall be lockable with an interior key lock.
c.Secondary Fiber Distribution Unit (SFDU). Secondary Fiber Distribution Unit (SFDU) shall be wall mounted or 1U as required by cabinet for device to be installed. Mounting shall use brackets and/or backer plates; no exterior wall penetrations shall be allowed. SFDU shall be small enough to fit in limited area or wall space.
1.SFDU is characterized as modular, powder coated aluminum.
2.SFDU may include pre-terminated factory connector build -outs (Pre-terminated Connector Assemblies) with adapter ports preinstalled.
3.SFDU shall be modular with separate splicing, connector, and jumper managements.
4.SFDU panels shall com e in 12 or 24 fiber capacity, project specific.
5.SFDU shall manage splice trays capable of handling 24 fiber splices, minimum.
6.The maximum number of adapters per build- out shall be twelve.
7.The panel shall have some locking mechanism, either exterior (lock ) or interior key.
d.Fan-Out Kit. Fan-Out Kits shall be used on all loose tube and central core fiber optic cable at each terminal end when cable end is to be terminated. The fan -out kit can be an individual buffer tube kit, a multiple buffer tube kit, or spider design kit. All fan -out kits shall have a minimum of 24 inch {61 cm} of tubing, measured from cable end to the back of the connector body, covering each fiber when installation is complete. Fan -out kits shall be rated for outdoor use withi n a temperature range of - 40°F to 158°F { - 40°C to 70°C}. Only one type of fan -out kit may be used on any one project.
e.Heat Cure Epoxy Connectors. Heat Cure Epoxy Connectors shall be ceramic ferrule, nickel plated zinc connector body (composite connecto r body for corrosive atmospheres), 125µm diameter fiber, with the fiber permanently secured
893.04 Network Devices.
within the ferrule with epoxy (heat epoxy cured or air dried) as specified by the connector and/or the epoxy manufacturer. The operating temperature shall be between 40°F to 167°F {40°C to 75°C}.
f.Mechanical Connectors. Mechanical Connectors shall be high -precision ceramic ferrule connectors with guaranteed insertion loss 0.2 dB typical/0.5 dB maximum per connector pair for single -mode. Cleaver, mating tool and mechanical connector shall be of the same manufacturer and specified to be compatible. Mating tool to install the mechanical connector shall be handheld operated and provide immediate verification that proper mating of the mechanical connector was succ essful or unsuccessful. Cleaver shall include dual stage clamping which holds the fiber (1st stage) before cleaving (2nd stage). Cleaver shall use a diamond blade for high -precision. Mechanical connectors shall not require epoxy or post installation polishing.
g.Pre-terminated Connector Assemblies . Pre-terminated Connector Assemblies (i.e., Factory Connector Build -Outs, or pigtail s) consist of fiber optic cables with factory -installed connectors on one end of the cable and an un -terminated optical fiber on the other. Pre -terminated Connector Assemblies shall meet the optical fiber and cable requirements within this Specification. The connectors on the factory connector build- out shall be heat cured epoxy connectors meeting specified requirements. Pre -terminated Connector Assemblies shall be installed with fusion splices; and , shall be equivalent in length of the fan -out field termin ation approach. Splices shall be housed in the appropriate fiber distribution equipment and installed using heat shrink protectors. Fusion splice shall meet specified requirements for maximum attenuation loss. Pre-terminated Connector Assemblies’ optic al fiber shall match the mode field diameter (MFD) of the fiber optic cable to which it will be spliced. MFD must be matched to minimize dB losses between optical fibers.
h.Patch Cable. Fiber optic Patch Cable assembly (a.k.a. patchcords or jumpers) sha ll be all- dielectric, single- mode fiber design with the appropriate termination as required herein and as shown on the Plans. The fiber optic cable and optical fiber shall meet the General requirements of Sub-Article 893.02(a). Patch cable shall be yello w in color (single -mode) and shall incorporate tight buffered fiber, aramid yarn strength member and an outer jacket. Fiber patch cables shall be pre- connectorized; and shall meet the connector requirements herein and as shown on the Plans. All single -mode duplex patch cables, zip cord or round, shall have connector boots of two (2) colors: white or off -white for one leg of the duplex cord (non -printed zip leg) and blue for the opposite leg (printed zip leg) of the duplex cord in accordance with TIA/EIA -568.3- D “Optical Fiber Cabling Components Standard ”. All connectors used shall have an operating temperature range of - 40°F to 158°F {- 40°C to 70°C}. Each connector is to have a minimum of a 1.0 inch {25 mm} strain relief boot and shall match the patch panel and/or fiber equipment being connected without adaptors. Each assembly shall be fully tested per the Fiber Optic Association (FOA) Standard FOA -2 to verify that the patch cable does not exceed the acceptable loss of the connector and fiber cable. Eac h assembly shall be individually packaged within a plastic bag that shall have the submitted manufacturer’s part number marked clearly on the outside of bag. Each patch cable shall be labeled as directed by the Engineer.
893.04 Network Devices.
a.Gene ral. The following Network Device material specifications covers equipment requirements for ethernet network elements (links, nodes, switches, etc.) which will provide the ITS communications network from the Regional/Area Traffic Management Center to the I TS field components and other stakeholders. These Network Devices will typically reside within the individual cabinets and communication closets within buildings or within hub buildings. Network Devices and components shall be provided and installed at al l locations as shown on the Plans. Furnished materials and equipment shall be new, free from defects, and manufactured using the highest quality, commercially available components and techniques to assure high reliability and minimum maintenance. Hardwar e and fittings shall be galvanized, stainless steel or other non -corrosive metal.
893.04 Network Devices.
1.Managed Ethernet Switch (MES). The Managed Ethernet Switch (MES) shall be equipped to operate at Fast Ethernet (10/100 Mbps) data rates for local devices and gigabit Et hernet rates for all uplink ports. MES shall be metal housing construction and have diagnostic light emitting diodes (LED), including link, TX, RX, and power LEDs. The Contractor shall provide items such as cables, connectors, software, modules, Small Form Pluggable (SFP) optics, etc. which are necessary for a complete and operational system. MES shall have an operating temperature range of -40°F to 185°F { -40°C to 85°C} and an operating ambient humidity of 5% - 95% (non -condensing), without fans. Mater ials furnished, assembled, fabricated, and/or installed under this item shall be compliant with the Institute of Electrical and Electronics Engineers (IEEE) 802.3 Ethernet standards, shall be manufactured to ISO 9001 Quality Assurance specifications, and s hall be Engineer reviewed and accepted. MES shall comply with the EIA/TIA Ethernet data communication requirements using single -mode fiber optic transmission medium and Category 6 copper transmission medium. The MES shall have a minimum Mean Time Between Failures (MTBF) of 10 years, or 87,600 hours, as calculated using the Bellcore/Telcordia SR -332 “Reliability Prediction Procedure for Electronic Equipment” handbook/standard. Equipment shall be new and corrosion resistant. Power supply shall accept 120 Vac and as defined within the specific MES Layer power requirements. MES shall have the following features: DESCRIPTION SPECIFICATION Ethernet Connectivity 1000 Mbps Ingress Protection IP30 Switching Method Store & Forward Priority Queues 4 Simultaneous Virtual Local Area Networks (VLAN) 255 VLAN ID Range 1 - 4000 Internet Group Management Protocol (IGMP) multicast groups 250 Port Rate Limiting 128 kbps - 8 Mbps No head of line blocking Yes MES shall comply with all applicable IEEE network standards for Ethernet communications, including but not limited to: 802.3 -10 BaseT 802.1d - Spanning Tree Protocol 802.3u -100 BaseTX, 100 BaseFX 802.1p - Class of Service 802.3x -Flow Control 802.1Q - VLAN Tagging 802.3z -1000 BaseLX 802.1w - Rapid Spanning Tree Protocol 802.3ab -1000 BaseTX 802.1x - Port Based Network Access Control 802.3ad -Link Aggregation 802.1Q -2005 - Multiple Spanning Tree Protocol (MSTP) 802.1d -Media Access Control (MAC) Bridges 802.3ae -2002* – 10 Gigabit Ethernet (10GBase) (* where indicated by network device Type) MES shall support Layer 2 management features and some higher -level multicast data transmission and routing features. These features shall include, but not be limited to:
893.04 Network Devices.
Hyper Text Transfer Protocol Secure (HTTPS) graphical web -based, SSL (128 -bit encryption) Secure Shell (SSH) Simple Network Management Protocol (SNMP) v1, v2c, v3 (56 -bit encryption) Role Based Access Control SSH/Secure File Transfer Protocol (SFTP) (128 - bit encryption) Remote Monitoring (RMON) Command Line Interface (CLI) Remote Syslog Rivest -Shamir -Adleman (RSA) Key Management (1024 bit key) Rich set of diagnostics with logging and alarms RADIUS client, Point to Point Protocol (PPP) All MES shall meet the following power and environmental requirements: Fully integrated power supply internal to switch UL 60950 safety approved with operating temperature tested at 185°F {85°C} for 16 hours Universal high -voltage range: 88 - 830 Vdc or 85 - 264 Vac Terminal blocks for reliable maintenance free connections The ports for the MES shall meet or exceed the following specifications: SFP Pluggable Optics Long haul optics allow Gigabit distances up to 43.5 mi {70 km} Two transmit and receive ports Bi-directional single strand fiber support All MES shall pass or exceed the following approvals: Hazardous Locations: Class 1, Division 2 Emissions: Federal Communications Commission (FCC) Part 15 (Class A), EN55022 (CISPR22 Class A) ISO: Designed an d manufactured using an ISO 9001 certified quality program Safety: cCSAus (Compliant with CSA C22.2 No. 60950, UL 60950, EN60950) European Conformity (CE) Marking Laser Eye Safety (US Food and Drug Administration (FDA)/Center for Disease and Radiological Health (CDRH)): Complies with 21 Code of Federal Regulation (CFR) Ch.1, Subchapter J, Part 1040 MES shall be in compliance with the following standards, to reduce potential interference with/by other devices when in close proximity: IEC 6100 0-6-2 Industrial (Generic) IEEE 1613 Electric Utility Substations IEC 61800 -3 Industrial (Variable Speed Drive Systems) NEMA TS2 Traffic Control Equipment IEC 61850 -3 Electric Utility Substations Failsafe Output Relay: for critical failure or error alarming MES shall have the following features, to ensure only technicians authorized by ALDOT can operate the switch:
893.04 Network Devices.
Multi-level user passwords VLAN (802.1Q) to segregate and secure network traffic SSH/SSL: 128 bits RADIUS centralized password management Enable/disable ports, MAC based port security SNMP v3 authentication and 56 -bit encryption Port based network access control (802.1x) (No Telnet or unsecure web -based access is to be allowed.) MES shall have the following protocols: Authentication Dynamic Host Configuration Protocol (DHCP) Agent (Option 82 Capable)
2.Optical Ports. Optical fiber (link) ports shall operate at 1310 or 1550 nanometers in single -mode. The optical ports are to be Type ST, SC, LC, or FC only, as shown on the Plans. Mechanical transfer registered jack (MTRJ) type connectors shall not be allowed. Each optical port shall support: paired fiber communications (i.e., one fiber will transmit (TX) data and one fiber will receive (RX) data); or, bi - directiona l TX and RX over one fiber. The optical ports shall have an optical power budget of at least 15 dB for 10K optics. MES shall have a minimum of two optical SFP transceiver ports.
3.Copper Ports. Copper ports shall use 8P8C (a.k.a. type RJ45 “unkeyed”) m odular jacks and shall auto- negotiate speed (i.e., 10/100/1000 Base at a minimum) and duplex (i.e., full or half). These 10/100/1000 BaseTX ports shall meet the requirements detailed in this Section and shall be compliant with the IEEE 802.3 standard pin outs.
4.CAT Network Cable. Category 5E unshielded twisted pair/shielded twisted pair network cables shall be compliant with the TIA/EIA -568-A standard. Category 6 or Category 6A unshielded twisted pair/shielded twisted pair network cables shall be compl iant with the TIA/EIA -568-C.2 standard. When installed outdoors, the above category (CAT) cables shall be outdoor rated. Color(s) of CAT cable jackets shall be as approved by the ALDOT Region Transportation System Management and Operations (TSM&O) Engine er.
b.Wired Network Devices.
1.Type A - Core Managed Ethernet Switch (CMES). Core Managed Ethernet Switches (CMES) are typically installed in the Department Traffic Management Center (TMC), office buildings, or hub cabinets/buildings to support the wide area network (WAN). CMES shall be Layer 3 (Core) , with capabilities including but not limited to: architecture standardization, open connectivity (i.e., interoperability), bandwidth management, rate limiting, security filtering, and general integration management of an advanced Ethernet switching architecture. CMES shall have the f ollowing additional features:
893.04 Network Devices.
DESCRIPTION SPECIFICATION Mounting Rack or Panel mountable Switching Latency ≤ 10.5 μs Switching Bandwidth ≥ 88 Gbps MAC addresses ≥ 98304 MAC address table size ≥ 64 kbytes Frame buffer memory ≥ 2 Mbit Network Management NETCONF Management Tools Loopback diagnostic tests Raw and interpreted real timeline traces Power Supply Power supply shall be modular and hot swappable Fully integrated, dual -redundant power supplies Ethernet Ports Fiber Optical (SFP) Gigabit Ethernet Ports minimum: 2 each – 10GBase, 18 each – 1000 BaseTX Copper/RJ45 Fast Ethernet Ports (10/100/1000 BaseTX) minimum: 16 each Optical SFP Transceivers Provide SFP transceiver modules (Type LC) with quantity minimums as follows:
a.ten (10) each that transmit at distances of 10 km, and
b.ten (10) each that transmit at distances of 40 km Serial Ports Fully compliant EIA/TIA RS -485, RS -422, RS -232 serial ports Distributed Network Protocol (DNP) MODBUS Raw socket mode allows conversion of an y serial protocol Layer 3 Protocols Multilink PPP RFC 1990 GOOSE messaging support IP Routing: OSPF, BGP, RIPv1, RIPv2, VRRP Traffic Control, Network Time Protocol (NTP) Server, Internet Protocol (IP) Multicast Routing PIM SM PPP RFC 1661, 1332, 1321, 1334, PAP, CHAP Frame Relay RFC 1490 or RFC 1294 WAN
2.Type B - Aggregation Managed Ethernet Switch (AMES). Aggregation Managed Ethernet Switch (AMES) are typically installed in hub cabinets to support the communications WAN. AMES shall have Layer 2 and/or Layer 3 capabilities (aggregate switch/router) as defined within this Specification. AMES shall also incl ude but not be limited to: architecture standardization, open connectivity (i.e., interoperability), bandwidth management, rate limiting, security filtering, and general integration management of an advanced Ethernet switching architecture. AMES shall ha ve the following additional features:
893.04 Network Devices.
DESCRIPTION SPECIFICATION Mounting Rack Mountable Switching Latency ≤ 8 μs Switching Bandwidth ≥ 10 Gbps MAC address table size ≥ 64 kbytes Frame buffer memory ≥ 1 Mbit Network Management NETCONF Management Tools Loopback diagnostic tests Raw and interpreted real timeline traces Power Supply Power supply shall be modular and hot swappable Fully integrated, dual -redundant (optional) power supplies Ethernet Ports Fiber Optical (SFP) Gigabit Ethernet Ports (1000 BaseX) minimum: 6 each Copper/RJ45 Fast Ethernet Ports (10/100/1000 BaseTX) minimum: 6 each Optical SFP Transceivers Provide SFP transceiver modules (Type LC) with quantity minimums as follows:
a.six (6) ea ch that transmit at distances of 10 km, and
b.two (2) each that transmit at distances of 40 km Serial Ports Fully compliant EIA/TIA RS -485, RS -422, RS -232 serial ports DNP MODBUS Raw socket mode allows conversion of any serial protocol Layer 3 Protocols Multilink PPP RFC 1990 GOOSE messaging support IP Routing: OSPF, BGP, RIPv1, RIPv2, VRRP Traffic Control, NTP Server, IP Multicast Routing PIM SM PPP RFC 1661, 1332, 1321, 1334, PAP, CHAP Frame Relay RFC 1490 or RFC 1294 WAN Frame Relay Support ISO and ITU compliant, network certified ANSI T1.617 Annex D, Q.933 or Local Management Interface (LMI) Local Signaling WAN Port Options T1/E1 (channelized/unchannelized) E1 75 ohms (Ω) via BNC Cellular (HSPA/EVDO) DDS
3.Type C - Field Managed Ethernet Switch (FMES). Field Managed Ethernet Switch (FMES) are typically installed in the ITS Cabinets to support the ITS field equipment (e.g. cameras, VDS, and DMS). FEMS shall be Layer 2 capable. FMES shall have the following additional feat ures: DESCRIPTION SPECIFICATION Mounting DIN Rail or Panel mountable Switching Latency ≤ 8 μs Switching Bandwidth ≥ 5.6 Gbps MAC address table size ≥ 32 kbytes Frame buffer memory ≥ 1 Mbit
893.04 Network Devices.
Electromagnetic Interference (EMI) Immunity and Environmental Compliance BS EN 50121 -4 “Railway Applications – Electromagnetic Compatibility – Part 4: Emission and Immunity of the Signaling and Telecommunications Apparatus” Management Tools Telnet (not for remote control), Command Line Interface (CLI) management interfaces Ethernet Ports Fiber Optical (SFP) Gigabit Ethernet Ports (1000 BaseX) minimum: 2 each Copper/RJ45 Fast Ethernet Ports (10/100/1000 BaseTX) minimum: 8 each Optical SFP Transceivers Provide SFP transceiver modules ( Type LC) with quantity minimums as follows:
a.two (2) each that transmit data at distances of 10 km
c.Wireless Network Devices.
1.Wireless Managed Ethernet Switch (WMES). Wireless Managed Ethernet Switch is network switch that is to be installed in field level device cabinets to support the communications network at remote areas where physically hardwired communications infrastructure is not available. The WMES shall provi de wireless 802.11b/g 2.4 GHz connectivity at transmission rates up to 54 Mbps from the remote ITS device installation location to the ITS network trunk interconnection point. WMES shall be Layer 2 capable. WMES shall include the following additional fea tures: DESCRIPTION SPECIFICATION Mounting DIN Rail or Panel mountable Switching Latency ≤ 8 μs Switching Bandwidth ≥ 1.8 Gbps MAC address table size ≥ 16 kbytes Frame buffer memory ≥ 1 Mbit Electromagnetic Interference (EMI) Immunity and Environmental Compliance BS EN 50121 -4 “Railway Applications – Electromagnetic Compatibility – Part 4: Emission and Immunity of the Signaling and Telecommunications Apparatus” Management Tools Telnet (not for remote control), CLI management interfaces Ethernet Ports Copper/RJ45 Fast Ethernet Ports (10/100 BaseTX) minimum: 8 each
2.Licensed Wireless Network Device. The Licensed Wireless Network Device and components shall be a microwave system utilizing a Federal Communications Commission (FCC) approved 6 to 40 GHz broadband communication package to be used for the backbone communications as shown on the Plans. The microwave shall be a split system consisting of an Indoor Unit (IDU) modem and an Outdoor Unit (ODU) radio that is mounted directly to the antenna. The IDU shall be installed within an environmentally controlled environment (cabinet or inside a building). The microwave and all appurtenances shall be FCC approved under FCC Part 101 and shall have an equipment authorization as part of Article 15. The Contractor shall obtain the license in ALDOT’s name and bear all cost associated with the license as part of payment for the licensed wireless link. (See additional Contractor responsibilities within the respective Construction Section of this Specification.) The wireless transceiver assembly shall operate as point -to-point or point -to-multipoint and at the frequency/frequencies as shown on the Plans. The equipment used shall be designed to protect
893.04 Network Devices.
personnel from exposure to high voltages during equipment operation, adjustments, and maintenance. Radios used for a link(s) shall be of the same brand to accomm odate the sharing of the IDU for sparring. The licensed wireless equipment shall meet the following requirements: DESCRIPTION SPECIFICATION Power and Connectors 120 Vac or 48 Vdc I/O Interface 4 each - GigE ports (2 each - 10/100/1000 BaseT and 2 each - SFP Optical 1000 BaseX, minimum) Radio: Annual Availability Frequency Range 99.999% FCC approved licensed frequency for the project application Radio Modulation Hitless and jitterless adaptive modulation with conservative and aggressive configurations Data Throughput Performance 1000 Mbps or greater true usable throughput as tested by bandwidth speed test unless specified otherwise on the Plans; 1000 Mbps performance shall be under all environmental conditions, times of day, and interference and not be subject to fluctuation below minimum performance standards Encryption Hardware based Advanced Encryption Standard (AES) encryption Operating Temperature: IDU ODU 23°F to 131°F { -5°C t o 55°C} -27°F to 131°F { -33°C to 55°C} Microwave Antenna High performance antenna with radome at the sizes indicated on the Plans, includes a seven -year manufacturer warranty Cabling LMR400 or equivalent or 0.5 in. Heliax Cable Antenna mounts shall prevent movement in high winds. Mounts shall be accepted by the Engineer prior to ordering.
3.Unlicensed Wireless Network Device. Unlicensed Wireless Network Device and components shall be a license -exempt Ethernet microwave system which utilizes 2.4 GHz or 5 GHz frequencies. These unlicensed frequencies have no regulating body and will receive no help from authorities regarding interference. Unlicensed Wireless Network Device and components shall be installed at the frequency specified on the Plans and as accepted by the Engineer. The wireless unlicensed Ethernet radio system shall meet the following requirements:
a.2.4 GHz and 5 GHz radios supplied shall meet FCC Part 15.247 and Industry Canada (IC) RS - 210.
b.2.4 GHz equipment shall operate between the ranges of 2.400 - 2.483 GHz.
c.5 GHz equipment shall operate between the ranges of 5.170 - 5.250 GHz and/or 5.725 - 5.875 GHz.
d.Radio shall provide data rates up to 300 Mbps along with the highest industry -established secur ity features available. The radio shall be compatible with high bandwidth, long range industrial application.
e.Radios shall be point -to-point or point -to-multipoint based on Plan details.
f.Radios shall be 802.11ac, backwards compatible with 802.11a/n standa rd protocols.
g.Time-division multiple access (TDMA) may be allowed for wireless communications based on project bandwidth requirements and acceptance by the Engineer.
h.Radios shall be dual chain (i.e., 2x2 MIMO) or greater.
893.04 Network Devices.
i.One each 8P8C (a.k.a. type RJ45 “unkeyed”) modular jack port required operating at 10/100/1000 Ethernet.
j.The radios shall also have security equal to the following encryptions: WEP (not allowed), WPA, WPA2 [including AES, Cryptography (CCMP), Temporal Key Integrity Protocol (TKIP) (not allowed), and MAC/RADIUS Authentication].
k.Adaptive modulation: RF link is monitored to automatically adjust the data rate to optimize the maximum link performance.
l.Radios shall support these networking features: Spanning Tree Protocol (STP), DHCP, NTP, SNMP, VLAN, Routing, and Quality of Service (QOS) (802.11e/Wi -Fi Multimedia (WMM)), and Multicasting.
m.Radios shall provide embedded web- based configuration and diagnostic menus and a complete software toolset to assist in design, configuring, monitoring and optimizing the wireless network.
n.Radios shall be manufactured in the United States of North America with 100 percent performance testing over operating temperatures of - 22°F to 140°F { -30°C to 60°C}.
o.Radios may be powered by Powered over Ethernet (PoE) In jector (IEEE 802.3) with surge protection.
p.Integrated antenna shall have a minimum gain of 24 dBi for 5.8 GHz and 11 dBi for 2.4 GHz.
q.Embedded Global Positioning System (GPS) with auto map location.
r.On board alignment tool (External RSSI LED) and/or audib le alignment tool.
s.Real time link monitoring.
t.Configuration Manager: Hyper Text Transfer Protocol (HTTP), HTTP Secured (HTTPS) [this is the Department’s preferred method], SNMP, and IP auto discovery; Noise level graph; LAN statics; WLAN statics; Error r eport; Uptime.
u.Limited warranty period for defects in materials or workmanship under normal use and service for a period of two (2) years from the date of installation.
4.Cellular Modem. The Cellular Modem system shall consist of these major components: cellular modem and antenna. The cellular modem shall be a gateway type interface and include as a minimum the following:
a.Supported frequency bands: Long-Term Evolution (LTE) 1900 MHz (Band 2); Advanced Wireless Services (AWS), 1700 MHz (Band 4); 850 MHz (Band 5); 700 MHz (Band 13); 700 MHz (Band 17); 1900 MHz (Band 25) Wideband Code -Division Multiple Access (W -CDMA) 2100 MHz (Band 1), 1900 MHz (Band 2), AWS, 1700 MHz (Band 4), 850 MHz (Band 5), 900 MHz (Band 8)
b.Power : shall be 9 -36 Vdc usin g 120 Vac or 12 Vdc power supply.
c.VPN:
i.IPsec, Generic Routing Encapsulation (GRE) tunneling, and SSL VPN client ii. Up to 5 concurrent tunnels iii. Port Filtering
d.Network and Routing:
i.Port Forwarding ii. Network Address Translation (NAT) iii. Dynamic DNS
e.Security:
i.LDAP, RADIUS and TACACS+ ii. DMZ iii. MAC Address Filtering iv. Inbound and outbound port filtering
f.Host Interfaces:
i.(2 each) 10/100 Base -T 8P8C (a.k.a. type RJ45 “unkeyed”) Ethernet ports ii. USB Micro -B Connector iii. RS-232, DE -9 connector iv. I/O: 5 each Digital, 4 each Analog, 2 each Relay
893.04 Network Devices.
g.Application Interfaces:
i.Transmission Control Protocol (TCP)/IP ii. HTTPS iii. National Marine Electric Association (NMEA) iv. User Data Protocol (UDP)/IP
v.SNMP (version 3, minimum) vi. Trimble ASCII Interface Protocol (TAIP) vii. DHCP viii. Short M essage Service (SMS) ix. GPS
h.LED Indicators:
i.Network ii. Activity iii. GPS iv. Signal
v.Service vi. Power
i.Antenna Connections: Primary 50 ohm (Ω), Threaded Neill -Concelman (TNC) GPS 50 ohm (Ω), SubMiniature version A (SMA) Rx Diversity 50 ohm (Ω), SMA
j.Other:
i.High-precision GPS receiver ii. External Subscriber Identification Module (SIM) card access iii. Low Power Mode iv. Remote management and configuration
v.Three (3) year warranty vi. Packet Level Diagnostics
k.Standards:
i.FCC ii. MIL-STD-810G Certified
l.Environmental Ratings:
i.Operating Temperature Range: -22°F to 158°F { -30°C to 70°C} ii. Storage Temperature Range: -40°F to 185°F { -40°C to 85°C}
m.Software Management. Software Management shall include remote management and configuration software and the ability to remo tely connect to the cellular modem using HTTPS or SSH. For communication purposes, the cellular modem shall be addressable with an alphanumeric URL that is stored on the cellular modem and a free dynamic DNS maintained by the modem manufacturer. The mode m shall not require a static IP address for communication purposes.
n.Cellular Modem Antenna. The Cellular Modem Antenna shall meet the following requirements as a minimum: DESCRIPTION SPECIFICATION Cellular/LTE rated for same frequencies as modem GPS 1575.42 - 1602 MHz Voltage Standing Wave Ratio (VSWR) < 2.0 Nominal Gain 698 - 896 MHz: 3 dBi; 1710 - 2620 MHz: 4 dBi Nominal Impedance 50 ohm (Ω) Polarization Right hand circular polarization Terminations Cell (SMA male); GPS (SMA male)
893.05 Camera.
The Contractor shall provide antenna assemblies complete with all necessary cabling hardware, connectors, and appurtenances that is compatible with the above specified cellular modem as specified within this Specification and as shown on the Plans.
893.05 Camera.
a.General. Camera shall be a Closed -Circuit Television (CCTV) camera unit with the following functional requirements:
1.The camera shall be controlled from a computer running the Graphical User Interface (GUI) provided as part of the current versi on of ALDOT’s Intelligent Transportation Systems software applications and manufacturer’s software.
2.The camera shall furnish video to the GUI within 3 seconds after the user’s execution of the GUI command to display the live video.
3.The camera shall furnish live video at a user defined frames per second.
4.The camera shall furnish live video with a maximum of 3 seconds of latency.
5.The camera shall broadcast user defined text (i.e., name) within 3 seconds after the user’s execution of the GUI command.
6.The camera shall broadcast user defined image (i.e., logo) within 3 seconds after the user’s execution of the GUI command.
7.The camera shall reset the following features when commanded from the GUI: camera power supply, camera controller, and camera video encoder.
8.The camera shall have assignable user defined block -out zones (e.g., privacy areas).
9.The camera shall provide two (2) simultaneous video streams. Manufacturer’s certification for each camera shall be provided to the Engineer prior to installation to en sure each camera unit has been properly assembled, configured, factory adjusted for color balance, lens tracking, and other configurable items have been set as specified within the Specifications. The CCTV camera shall meet the following minimum requiremen ts: DESCRIPTION SPECIFICATION Camera Imaging Unit Digital signal processing (DSP) solid state design Environmental Operating: -30°F to 165°F { -34°C to 74°C}, at Relative Humidity 100% NEMA TS2 rated for power, shock and vibration Sustain winds of 110 mph with a 30% wind gusts factor Remain attached to pole for winds up to 160 mph Camera – Standard IEC 60529 rating of IP 67 Optics housing – shall be heated or pressurized with Dry Nitrogen at 5 psi, Powder Coated Aluminum, and meet IEC Standard 60529 rating of IP67 Image Stabilization Shall have automatic image stabilization Resolution 1920 x 1080 (16:9 aspect ratio) Lens Zoom 30X Optical, 4.4 mm to 129 mm (optical), aperture f1.6 (w) f4.6 (t) Digital Zoom 12x Mode Day/Night switchover: day (color) / night (mono), manual or auto Horizontal Angle of View 63.4 degrees to 2.3 degrees Focus Distance 0.7 inch (wide angle) to 29.5 inches (telephoto), minimum Focus Automatic with manual override by remote command selection Iris Automatic with manual override by remote command selection
893.05 Camera.
DESCRIPTION SPECIFICATION Sensitivity 0.4 lux at 1/30 sec. (color day); 0.025 lux at 1/2 sec. (c olor day); 0.04 lux at 1/30 (mono night), 0.0025 lux at 1/2 sec (mono night) Video Protocols RSTP/Real -time Transport Protocol (RTP), Real-Time Streaming Protocol (RTSP) Interleave, RTP Multicast Open Network Video Interface Forum (ONVIF) Profile S NTCIP 1205 Version 2 Dynamic Range ≥ 80 db Imager 1/2.8 -inch Complementary metal -oxide semiconductor (CMOS) sensor Camera ID Programmable text up to 25 characters long, up to 8 elements, American Standard Code for Information Interchange (ASCII) set. Messages – ID characters are white with black border, text height 4% image resolution minimum. Preset messages to include: camera title, preset title, position, compass, sector title, event title, date/time, and alarm/service message. Bitmap (BMP) f ormat logo display. Message/logo positioning can be placed at left, right, top or bottom. ID message capability shall be set, controlled, and edited by remote commands and text entries. Privacy Zones 8 programmable zones for video blanking Digital Vide o 2 simultaneous, independently configurable video output streams Internal H.264 and MJPEG encoding in accordance with ITU -T
H.264 standard and ISO/IEC MPEG -4AVC standard (formally ISO/IEC 14496- 10-MPEG -4 Part 10, Advanced Video Coding). UDP. video mult icasting. Resolution – 1080p, 720p, D1, CIF or 16:9 accepted equiv. Frame rate – 1 fps to 30 fps (National Television Standards Committee (NTSC)) Video bandwidth – 256 kbps to 8 Mbps Camera Housing Powder coated 6061 -T6 aluminum (no polymer -based housings allowed except window) Sunshield Dome distortion free clear polycarbonate Stainless steel hardware, anti -seizing non- hardening compound on threads Mounts rated to meet camera weight and wind loads For pressurized housings: Gas-tight connectors; wiring sealed to connector using silicon or potting compound Schrader valve for pressurizing Pressure relief valve
b.Fixed Camera. Fixed Camera shall be a Closed -Circuit Television (CCTV) camera unit with the following additional requirem ents (minimum): DESCRIPTION SPECIFICATION Camera Power 12 Vdc or PoE (IEEE 802.3) Automatic Gain Control managed, 0 to 36 dB Electronic Shutter Automatic exposure period with manual override by remote command, selection with a range of: 1/6 second to 1/8,000 second
893.05 Camera.
Connections 1 each 8P8C (a.k.a. type RJ45 “unkeyed”) modular jack (digital; NTSC or Phase Alternating Line (PAL))
c.Positioner Camera. Positioner Camera shall be a Closed -Circuit Television (CCTV) camera unit with the following additional requirements (minimum):
1.The camera shall include Pan -Tilt-Zoom (PTZ).
2.The camera shall pan within 1 second after the user’s execution of the GUI command.
3.The camera shall be panned between 0 and 360 degrees in a continuous motion while the command is being executed.
4.The camera shall be panned based on the user defined speeds for each on type of camera ranging from 0.1 to 40 degrees per second.
5.The camera shall be tilted within 1 second after the user’s execution of the GUI command.
6.The camera shall be tilted in a continuous motion while the user defined speed command is being executed within the parameters of Type A and Type B cameras, respectively: CAMERA TYPE VERTICAL RANGE Type A Positioner Camera +90 degrees to -90 degrees Type B Positioner Camera +36 degrees to -85 degrees
7.The camera shall zoom within 1 second after the user’s execution of the GUI command to zoom.
8.The camera shall have the following presets: pan, tilt, zoom, and focus.
9.The camera shall take motion within 1 s econd after the user’s execution of the GUI preset command.
10.Preset return at an accuracy of ± 0.36 degrees at 120 degrees/sec. The Positioner Camera shall meet the following additional minimum requirements: DESCRIPTION SPECIFICATION Camera Power 115 Vac (plus or minus 10 percent), 50/60 Hz at cabinet. Imaging unit and positioner operate at 24 Vac or 10- 28 Vdc; 128W maximum consumption Automatic Gain Control managed, 0 to 48 dB Electronic Shutter Automatic exposure period with manual override by remote command, selection with a range of: 1/2 second to 1/10,000 second Presets Positioner - 32 pan, tilt, zoom, and focus presets Control Addressable RS -422, compatible with device -controlling software Connections 8P8C (a.k.a. type RJ45 “unkeyed”) modular jack port (digital; NTSC or PAL), BNC (analog). EIA RS -232/422/485 (control) Pan, Tilt, Zoom (PTZ) Unit Weather proof Gold plated electrical pin connectors Corrosion resistant, maintenance free gears Drive motors: Instantaneous reversi ng Overload protected User defined (i.e., adjustable) pan/tilt (preset) speeds Braking pan/tilt, non -drifting Adjustable limit switches for pan/tilt
893.06 Ve hicle Detection Systems (VDS).
d.Dome Camera. Dome Camera shall be a Closed- Circuit Television (CCTV) camera unit with the following additional requirements (minimum):
1.The camera shall include Pan -Tilt-Zoom (PTZ).
2.The camera shall pan within 1 second after the user’s execution of the GUI command.
3.The camera shall be panned between 0 and 360 degrees in a continuous motion while the command is being executed.
4.The camera shall be panned based on the user defined speeds up to 240 degrees per second.
5.The camera shall be tilted within 1 second after the user’s execution of the GUI command.
6.The camera shall be tilted in a continuous motion while the user defined speed command is being executed from +5 degrees horizontal to - 90 degrees (straight down) at 0.1 degrees/sec to 45 degrees/sec.
7.The camera shall zoom within 1 second after the user’s execution of the GUI command to zoom.
8.The camera shall have the following presets: pan, tilt, zoom, and focus.
9.The camera shall take motion within 1 second after the user’s execution of the GUI preset command.
10.Preset return at an accuracy of ± 0.36 degre es at 120 degrees/sec. The Dome Camera shall meet the following additional minimum requirements: DESCRIPTION SPECIFICATION Camera Power 115 Vac (plus or minus 10 percent), 50/60 Hz at cabinet. Imaging unit & positioner operate at 24 Vac or 10 -28 Vdc; 128W maximum consumption Automatic Gain Control managed, 0 to 48 dB Electronic Shutter Automatic exposure period with manual override by remote command, selection with a range of: 1/2 second to 1/10,000 second Presets 32 pan, tilt, zoom, and focus presets Connections 8P8C (a.k.a. type RJ45 “unkeyed”) modular jack port (digital; NTSC or PAL), EIA RS -232/422/485 (control) Pan, Tilt, Zoom (PTZ) Unit Weatherproof Gold plated electrical pin connectors Corrosion resistant, maintenance free gears Drive m otors: Instantaneous reversing Overload protected User defined (i.e., adjustable) pan/tilt (preset) speeds Braking pan/tilt, non -drifting Adjustable limit switches or stops for pan/tilt
893.06 Vehicle Detection Systems (VDS).
a.General.
1.Detection Definitions. Provide a VDS that shall detect vehicle presence for the purpose of data collection to be used for signal actuation, volume counts, and/or travel time calculations. The Contractor shall provide a VDS utilizing one of the following t echnologies, as shown on the Plans:
a.Radar Vehicle Detection System (RVDS). A RVDS uses an FCC -certified, low -power microwave radar beam to detect vehicle presence and generate volume, occupancy, and speed data.
893.06 Vehicle Detection Systems (VDS).
b.Magnetometer Vehicle Detection System ( MVDS). A MVDS uses a magnetic detector probe as a transducer that detects vehicle presence by converting changes in the vertical component of the earth’s magnetic field to changes in inductance to generate volume, occupancy, and speed data.
c.Bluetooth Data Collection System (BDCS). A BDCS uses a Bluetooth detector probe to detect vehicle presence through Bluetooth devices to generate volume, travel time, and speed data.
2.Communications. The VDS shall generate and transmit traffic data either : (1) in serial format using an ALDOT traffic signal cabinet TS1 or TS2 rack card or through a standard EIA RS -232 communication port; or,
2.an Internet Protocol (IP) addressable Ethernet interface for ITS projects. The communication interface to be us ed for installation shall be as shown on the Plans. The VDS shall be IP addressable and be compatible with the network device requirements of this Specification. All device communication addresses shall be user programmable. The VDS shall support PPP, PM PP (i.e., polled protocols), and Ethernet protocols. The setup program shall assign an IP address to each detection unit. The VDS shall respond to a polling request from the TMC for traffic data. The vehicle detection unit shall respond with the accumul ated traffic parameter measurements from the period since the last request was issued. The VDS shall store all system configuration and traffic parameter data within internal, nonvolatile memory. The traffic data shall be capable of local and remote trans fer by issuing requests from a personal computer (PC) across the communication network connecting the detector and the TMC operator workstation or other computer.
3.Configuration Management. The VDS, with exception of Bluetooth, shall be provided with com puter software that allows an operator to program, operate, and read the current status of all system features and functions using a laptop computer or remote TMC workstation. The software application shall provide PC display of the detection zones and con trol of any vehicle detector connected to the network. The Contractor, using a locally connected laptop computer, shall conduct system setup, calibration, diagnosis, and data retrieval operations. The detection system shall allow its configuration data sa ved to a laptop computer, server, or TMC operator workstation, which can later transfer the data back to the detection system for reloading. The Contractor shall be able to use a laptop computer or TMC workstation to edit previously defined detection conf igurations to permit adjustments to the detection zone’s size, placement and sensitivity, and to reprogram the detector’s parameters. The laptop computer and the detection system shall communicate when connected directly by an EIA RS -232 cable or CAT 5E/6/6A cable via 8P8C (a.k.a. type RJ45 “unkeyed”) modular jack ports. The software shall allow communication between multiple users and multiple field devices concurrently across the same communication network. Once programmed, no periodic adjustments shall be required to the detection zones unless physical roadway conditions change, such as lane shifts or closures.
4.Electrical Requirements. The VDS field hardware shall meet the requirements in the FCC’s 2005 CFR, Title 47, Part 15. The detector shall not interfere with any existing equipment. The vehicle detection system’s cabinet components shall operate using a nominal input voltage of 120 volts of alternating current (Vac). For any device requiring a source input other than the standard 120 Vac, the Contractor shall supply the appropriate means of conversion. Equipment shall be furnished with the appropriate power and communication cables. Cables shall comply with NEC sizing requirements as presented in the NEC Article 210 -19(a), Fine Print Note (FP N) No. 4, and meet all other applicable standards, specifications and local code requirements. In the event that power to the VDS or any subcomponent is interrupted, the equipment shall automatically recover after power is restored. All programmable system settings shall return to their previous configurations when the system resumes proper operation.
5.Environmental Requirements. The Contractor shall provide VDS that meet all requirements during and after being subjected to an ambient operating temperatu re range of -30°F to 165°F { -34°C to 74°C} with a maximum
893.06 Vehicle Detection Systems (VDS).
noncondensing relative humidity as defined in the environmental requirements section of the NEMA TS2 standard. The VDS manufacturer shall certify that its device has successfully completed environme ntal testing as defined in the NEMA TS2 standard. Vibration and shock resistance shall meet the requirements of NEMA TS2 Sections 2.1.9 and 2.1.10, respectively. The system components shall comply with the environmental requirements detailed in the NEMA TS2 standard. The Contractor shall furnish and install an environmentally resistant and tamper- proof sensor enclosure for any detector assembly exposed to the elements. The enclosure shall be environmentally sealed upon installation.
b.Radar Vehicle De tection System (RVDS). Radar Vehicle Detection System (RVDS) shall meet the following functional requirements:
1.The RVDS shall be manufactured for side -fire detection.
2.The RVDS shall measure volume, average speed, classification, occupancy, density, headway , gap time, and vehicle presence.
3.The vehicle detection unit shall detect vehicles through all environmental conditions.
4.The RVDS shall provide detection data via RS -232 connection and Ethernet connection.
5.The RVDS shall configure manually for zones. The user shall configure zones by defining zone limits through the Graphical User Interface (GUI).
6.The RVDS shall back up detection zones data in non -volatile memory automatically and manually.
7.The detection zones shall restore automatically if the system is interrupted, manually through a GUI command, and without detection disruption.
8.RVDS shall provide a real -time traffic pattern display to the GUI.
9.The RVDS shall reset specified feature when commanded from the GUI for radar detector power supply.
893.06 Vehicle Detection Systems (VDS).
The RVD S equipment shall also meet the following minimum technical requirements: DESCRIPTION SPECIFICATION Type A Type B Single beam Dual or multi beam Radar Detector Power 115 Vac, 60 Hz Frequency 24.00 to 24.25 GHz Frequency Tuning No manual tuning to circuitry Detection Range 6 to 250 ft. {1.8 to 76.2 m} Lane Detection 12 lanes Type A Accuracy: Volume Speed Classification 97% typical 95% typical 90% typical Type B Accuracy: Volume Speed Classification 98% typical 97% typical at 70 mph; 95% typical at 40 mph 90% typical Communication Ports Full-Duplex RS -232 with RTS/CTS or Half -duplex RS -485 Firmware Upgrade Firmware Upgradability over any communication port Baud Rate User configurable. Supported Baud Rates: 9600, 19200, 38400, 57600, and 115200 bps. User Configurable Settings Baud rate, Response delay, Data push, RS -232 flow control Interval Data Collected for Each Lane Sensor ID, Timestamp, Volume, Average Speed, Occupancy, Classification Counts, S peed Bin Counts, Direction Counts, Average Headway, Average Gap, 85th Percentile Speed Event Data for Each Detection Sensor ID, Timestamp, Lane Assignment, Speed, Length, Class Presence Data for Each Lane Sensor ID, Per -Lane Presence Vertical Beam Width 50° Horizontal Beam Width 6° Maintenance No cleaning or adjustment necessary, no battery replacement necessary, no recalibration necessary, mean time between failures: 10 years minimum
c.Magnetometer Vehicle Detection System (MVDS). Magnetometer Vehicle Detection System (MVDS) shall meet the following functional requirements:
1.The MVDS shall operate with three (3) main parts: in -cabinet data processing unit, access point with antenna(s), and in -road magnetometer vehicle detection unit .
2.The MVDS shall measure volume, occupancy, density, headway, gap time, and presence.
3.The in- road detection unit shall wirelessly transmit vehicle data to the access point. All necessary equipment (e.g., transceivers, receivers, etc.) shall be included as part of the MVDS.
4.The in- road detection unit shall wirelessly receive configuration data from the access point.
5.The in- road detection unit shall communicate through snow, water, ice, concrete, asphalt, and epoxy used to fill in around in -road unit.
6.The MVDS shall provide an output compatible for use with NEMA TS2 controllers, Type 2070 controllers, and Type Advanced Transportation Controller (ATC).
893.06 Vehicle Detection Systems (VDS).
7.The MVDS shall provide detection data via wireless communication from in -road units to the access point and communication from the access point to the in -cabinet unit, wirelessly and wired through EIA RS -485 connection.
8.The in- road units shall sense vehicles within a 3 ft {0.9 m} radius of the in -road unit location.
9.The in- road unit shall recalibrate itself if environmental changes, roadway shifts, and roadway buckles.
10.The MVDS shall configure in- road units manually and into groups for phase designation.
11.The MVDS shall back up detector configurations in internal storage of the in -cabinet unit automatically and manually.
12.The detector configuration shall restore automatically if the system is interrupted, manually through the Graphical User Interface (GUI), and without detection disruption.
13.The MVDS shall provide a real -time traffic pattern display to the GUI.
14.The MVDS shall broadcast fault information on the GUI for power failure, communication errors, and in- road unit low battery.
15.The MVDS shall reset specified features when commanded from the GUI for in -cabinet unit, access point, and in -road unit. The MVDS equip ment shall also meet the following minimum technical requirements: DESCRIPTION SPECIFICATION Detection Area Each detector shall detect vehicles comparable to that of a 6 ft x 6 ft {1.8 m x 1.8 m} loop Detector Battery Life The average lifespan for detector batteries shall be ten (10) years minimum Detector Battery Type D cell lithium battery or equivalent Average Vehicle Count 95% accurate at 500 VPHPL Communication Ports 8P8C (a.k.a. type RJ45 “unkeyed”) modular jack port, EIA RS - 485, Ethernet Interval (bin) data packet protocol Shall support: Sensor ID; Timestamp which records year, month, day, hour, minute, and second; Total volumes; Average speed values in either mph or kph; Occupancy in 0.1% increments; Volume in up to eight lengt h-based user -defined vehicle classification bins; Volume in up to 15 user -defined speed bins (bin by speed); Average headway in seconds; Average gap in seconds; 85th percentile speed in either mph or kph Event (per vehicle) data packet protocol Shall supp ort: Sensor ID; Timestamp which records year, month, day, hour, minute, second, and millisecond of the time the vehicle left the detection zone; Lane assignment; Speed values in either mph or kph Real-time true presence data packet protocol Shall support: Sensor ID; True presence information for each magnetometer being monitored
d.Bluetooth Data Collection System (BDCS). Bluetooth Data Collection System (BDCS) shall meet the following functional requirements:
1.The BDCS shall receive media acces s control (MAC) addresses associated with Bluetooth - enabled devices utilizing either discoverable and/or non-discoverable methods.
2.The BDCS receiver shall identify unique MAC addresses associated with Bluetooth -enabled electronic devices.
3.The BDCS shall co mpare unique MAC addresses associated with Bluetooth -enabled electronic devices.
893.06 Vehicle Detection Systems (VDS).
4.The BDCS shall temporarily store identification information to use for matching for the purposes of travel time.
5.The BDCS shall be configured through the GUI for setting the duration of time to temporarily store identification formation for matching.
6.The BDCS shall transmit travel -time based on pairing of BDCS sensor locations.
7.The BDCS shall be configured through the GUI for setting pairings for travel time.
8.Travel time pairings shall be configurable for two detectors to be paired for beginning and end designations.
9.Travel time pairings shall be configurable for more than two detectors to be paired for beginning and end designations with the intermediate detectors having to be triggered as a logical parameter check for the match completion (i.e., not a sum of pairings)
10.The BDCS shall transmit average speed based on pairings of BDCS sensor locations.
11.The BDCS shall be configured through the GUI for setting pairings for average speed.
12.Average speed pairings shall be configurable for more than two detectors to be paired for beginning and end designations with the intermediate detectors having to be triggered as a logical parameter check for the match completion (i.e., not a su m of pairings).
13.The BDCS sensor shall maintain MAC addresses unlinked to a specific person.
14.The BDCS shall transfer data using an Ethernet based connection.
15.The BDCS shall detect within a minimum radius of 250 ft. without obstructions.
16.The BDCS detection r ange shall be adjusted by user configurable transmit power. The BDCS equipment shall also meet the following minimum technical requirements: DESCRIPTION SPECIFICATION Detector ID Each detector shall have a dedicated IP address Power Supply (Type to be as shown on the Plans) Detectors shall support power via: • 110-220 Vac (supports direct connection or power supply, PoE (IEEE 802.3)) • 10-48 Vdc (supports 85W solar powered unit with gel sealed battery, PoE (IEEE 802.3)) Updates The server shall be capable of receiving patches and updates Communications (Type to be as shown on the Plans) Ethernet 10/100 BaseT (static or DHCP IP address) LTE cellular connection Bluetooth Sensing Data shall be retrieved for both MAC addresses and/or Bluetooth unit heartbeats. Detection Information 12 characters of the MAC address shall be detected for discoverable Bluetooth signals 6 characters of the MAC address shall be detected for non - discoverable Bluetooth signals, if included Bluetooth 2.4 GHz Demodulator Antennae 2 dBi Omni (discoverable Bluetooth detector) 2 dBi Omni (non -discoverable Bluetooth detector, if included) LTE – MIMO Receive Diversity Detector Memory On board 4GB Micro -SD card up to 1 year of storage Processor Real time microcontroller Bluetooth v4.1
893.07 Dynamic Message Si gn (DMS).
893.07 Dynamic Message Sign (DMS).
a.General.
1.DMS Descriptions. The Contractor shall provide and install a Dynamic Message Sign (DMS) that shall display a user defined changeable message for the purpose of relaying traffic, hazard, emergency, or other information to the travelling public. ALDOT uses the following DMS styles:
a.Walk-In DMS. A Walk -In DMS uses a permanently mounted dynamic message board to display information and can be entered to perform routine maintenance and repair.
b.Front Access DMS. Front Access DMS uses a permanently mounted dynamic message board to display information and can be accessed for routine maintenance and repair through opening sections of the message board face.
c.Dedicated DMS. A Dedicated DMS uses a permanently mounted dynamic message board to display travel time information. The Dedicated DMS is mounted to a standard retroreflective s ign which explains the dynamic information shown on the Dedicated DMS.
2.Manufacturer Compliance. The DMS manufacturer is required to fully comply with this Specification. The Contractor shall provide a compliant first -draft submittal and DMS equipment that complies with this Specification. The Department reserves the right to independently verify the compliance of all delivered DMS products prior to acceptance and payment. The DMS Manufacturer shall be ISO 9001 Certified or ISO 9001 Compliant as determ ined by the Engineer.
3.Material and Process Standards. All materials furnished, assembled, fabricated or installed under this item shall be new, corrosion resistant and in strict accordance with the Specifications and as shown on the Plans. Aluminum for fabricated items shall conform to the requirements of Section 891 , unless otherwise stated herein. Aluminum DMS housings and control equipment cabinets shall be fabricated, welded or chemically bonded and inspected in accordance with the requirements of the ANSI/American Welding Society (AWS) D1.2 Structural Welding Code -Aluminum (latest version). [See Item 893.07(a)4, “Sign Housing” for special material submittal requirements regarding welders and welding inspectors.] DMS shall meet the requirements of NEMA TS4 “ Hardware Standards for Dynamic Message Signs (DMS), with NTCIP Requirements ”. DMSs are classified by the type of sign display and the type of mechanical construction. Provide full -color and full -matrix signs as shown on the Plans and required within the Specifications. DMS shall use only equipment and components which meet the minimum requirements specified within the Specifications. The front of the DMS housing shall have either a flat black matte finish or a semi- gloss black polyvinylidene fl uoride (PVDF) coating. This finish coating shall withstand extreme weather conditions and prevent chalking.
4.Sign Housing.
a.General. Structural mounting hardware (nuts, bolts, washers, etc.) shall be stainless steel and shall be appropriately sized for their application. The DMS housing shall be fabricated, welded and inspected in accordance with the requirements of ANSI/AWS D1.2 Structural Welding Code -Aluminum. Compliance with this requirement shall include, but is not limited to:
i.The DMS manuf acturer’s submittal shall contain a copy of the manufacturer’s certified welding procedures. ii. All manufacturing personnel who perform welding on the DMS housing shall be certified to AWS D1.2 for all weld types required for housing fabrication. The DMS manufacturer’s submittal shall contain a copy of each welder’s certification.
893.07 Dynamic Message Sign (DMS).
iii. All personnel who perform welding inspection on the DMS housing shall be certified to AWS D1.2. The DMS manufacturer’s submittal shall contain a copy of each Certified We lding Inspector’s certification, along with their phone number and address. iv. All DMS housing welding shall be inspected on a daily basis by a Certified Welding Inspector (CWI), who shall complete daily written reports on DMS welding progress, housing we ld integrity, and any corrective action taken. These reports shall be archived by the DMS manufacturer and shall be available for immediate review upon request by the Engineer.
b.DMS Housing Test. The DMS housing, including its front face panels, shall pass the NEMA hose -down test as described in the latest edition of NEMA Standards Publication 250. However, the spray angle need not be more than 75° from straight down.
c.Professional Engineer Certification of DMS Housing Structural Design. The DMS housing, structural framing, face covering, and mounting members shall be designed to comply with the requirements of AASHTO’s “ Standard Specifications for Structural Supports for Highway Signs, Luminaries and Traffic Signals, 2009 Edition ” regarding wind loa ds and gust factors. The DMS housing must also withstand a front face ice load as defined in same AASHTO document. The DMS housing design shall be certified and sealed by a Professional Engineer registered in the State of Alabama.
d.Ventilation and Hea ter. The DMS housing shall be provided with the necessary louvered vents positioned such that vehicle exhaust fume intrusion into the sign housing is minimized while the housing is provided with sufficient ventilation to maintain the thermostat temperature settings. Provide fans, thermostatically and parallel timer switch controlled, to pull warm air out of the sign housing to support the venting of the heat within the sign housing to the extent that an interior temperature of no more than 130°F {54°C} is reached with a 120°F {49°C} direct sunlight generated ambient temperature with the access door closed and locked. Documentation of the design calculations to support the performance of the ventilation and heating systems shall be included with the DMS material submittal and delivered to the Engineer. (Similarly, effective positive- pressure ventilation and heating system may be used but must be submitted via an exception letter to the Engineer for review and approval. If approved, this positive- pressure ventilation system must meet same heating and cooling levels and comparable features as those obtained with above ventilation and heating system.) Use replaceable waterproof washable dust filters across all vents and position them such that when in place a secure dust tight joint exists between the filter and the housing. Install fans in protected fan openings within the DMS housing such that moisture, dust, vehicle exhaust fumes, or insects or birds will not enter the fan opening. Control the ve ntilation fan and heater by thermostats adjustable to operate the fan between the range of 70°F to 130°F {20°C to 54°C} and a separate heater thermostat adjustable between the range 30°F to 80°F { -1°C to 27°C}. The on -off temperature delta of the thermost ats shall be nominally 3°F {1.7°C}. Verify that the current rating of the thermostats is no less than 200 percent of the respective controlled equipment. Provide a two (2) hour timed -on fan switch for operation of the fans by maintenance personnel that, when placed in the on position will turn on the fans for a period of two hours. Turning the switch into the off position then back on shall reset the timer to two more hours from the off -on cycle of the switch. Install device across the thermostat and sw itch contacts that will prevent electromagnetic interference being generated with the opening or closing of the thermostat contacts under electrical load. If required, provide a heating system and thermal insulation to keep condensation on critical element s to a minimum or to maintain performance on temperature sensitive items. The DMS environmental control system shall also provide the following:
i.The operational status of the fans shall be automatically tested once a day and tested on command from the c entral controller or laptop computer. The testing of the fan units shall be via solid state airflow sensors mounted within the duct system measuring air flow or the lack thereof. Any lack of flow alarms will cause an error message to be sent to the centr al controller or laptop computer when the sign controller is polled by the central controller or laptop computer. ii. All ductwork that impedes access to any sign components shall be easily removable, without tools, for servicing of these components.
893.07 Dynamic Message Sign (DMS).
iii. All ductwork shall be 0.040- inch minimum aluminum and shall be designed to be extremely efficient with minimal pressure drop throughout the system. iv. The temperature reading and humidity readings from the sensors shall be continuously measured and monito red by the sign controller. A temperature or humidity reading greater than a user selectable critical temperature shall cause the sign to take action such as the turning on of additional fan units, the turning on of the pixel board heat strips, an automat ed combination of the two functions or in extreme cases, the sign to go to blank and the sign controller shall report this error message to the central controller.
v.The LED modules and electronic equipment shall be protected by a fail -safe, back-up fan control system in the event of an electronic fan control failure or shutdown of the sign controller.
e.Outdoor Ambient Light and Temperature Sensor System. Sensors, which measure outdoor ambient light levels and the outdoor ambient temperatur e at the DMS site, shall be mounted to the DMS housing walls. The system shall consist of three (3) commercially available photo -electric sensors and one (1) temperature sensor. Photoelectric sensors shall each have a minimum photo- sensitive area of 0.25 square inches, and sensor output shall be reported to the DMS Field Controller. Temperature sensor output shall also be reported to the DMS Field Controller. Two of the photoelectric sensors shall be placed such that they measure ambient light levels st riking the front and rear of the DMS housing, and the third photoelectric sensor shall face the ground. The temperature sensor shall be placed such that it is never in direct contact with sunlight. Use photoelectric sensors capable of being continually ex posed to direct sunlight without impairment of performance of the sensors. The photoelectric sensor shall be internally read by the DMS dimming system. The dimming system shall read each of the 255 photoelectric sensor levels. The DMS dimming system shal l transmit the read value to the DMS ground mounted controller for distribution to the central system. When the DMS is operating in local mode control, the dimming of the DMS display shall be consistent with the ambient light sensed and the dimming system shall command the display into one (1) of three (3) configurable display intensity levels. Sense the ambient illumination level by orienting and optimizing the system of three photovoltaic sensors in the following manner to sense the ambient illumination level: • Photoelectric sensor 1 - Northern sky (or toward rear of sign) • Photoelectric sensor 2 - Facing towards oncoming traffic (upstream or front of sign) • Photoelectric sensor 3 - Facing down to the ground (or may face down from bottom of sign) The actual orientation of these minimum three photoelectric sensors should be as recommended by the manufacturer and as approved by the Engineer.
5.DMS Control Functional Requirements.
a.DMS Control. All project DMS shall operate from a remote sign control computer, referred to as a Field Controller, which receives instructions remotely via:
i.Remotely via wireless or fiber optic communications from the Central Software ii. Locally via direct laptop computer connection (RS -232) to the Field Controller (Laptop connection shall be possible at the Field Controller within the housing or at the electronics remote access cabinet mounted on the sign structure itself at ground level.) iii. Via other local con trol inputs as described within the Specification The DMS shall continue to display the current message in the event of communication errors and Field Controller lock -up. The DMS shall display the current message upon restoration of power.
b.Modes of Ope ration. All project DMS shall be able to display static messages, flashing messages, or multiple -frame messages, as described below: • Static Message – The selected message shall be displayed continuously on the sign face until the Field Controller blanks th e sign or affects the display of another message.
893.07 Dynamic Message Sign (DMS).
• Flashing Message – All or part of a message shall be displayed and blanked alternately at rates from as fast as three (3) flashes per second to as slow as one (1) flash per 10 seconds. Flash rate shall be programmable in increments of 0.1 seconds. In the flashing mode, message display time shall equal message off time. • Multiple -Frame Messages – The selected message shall consist of up to three different frames, with each frame containing up to three lines of information. The display time of each message frame shall be individually controllable in durations of 0.5 seconds or greater and shall be programmable in increments of 0.1 seconds.
6.Display Requirements.
a.Alphanumeric Characters. All project sig ns shall display a message composed of any combination of alphanumeric character fonts and punctuation. This shall minimally include the following character fonts and shapes:
i.“A” through “Z” – all as upper case letters, having a vertical height of seve n (7) pixels and higher ii. “0” through “9” as decimal digits, having a vertical height of seven (7) pixels and higher iii. A blank or space iv. Punctuation marks as follows . , ! ? - ‘ ’ “ ” ( )
v.Special characters as follows # & * + < >
b.Multiple Fo nt Styles. All project signs shall display alphanumeric character fonts having the following configurations. The LED DMS shall enable the display of text, consisting of a string of alphanumeric and other characters. The approximate size of the sign shall be as shown on the Plans. Each character shall be formed by a matrix of luminous pixels. The supported fonts shall also meet the latest MUTCD font and pixel requirements.
c.Line and Character Spacing. Signs shall display all the fonts listed here in with the following inter -character spacing:
i.Single -stroke fonts shall be displayable with two- pixel spacing, ii. Double -stroke fonts shall be displayable with two -pixel and three- pixel spacing, and iii. The inter -character pixel spacing for the downl oadable fonts is user -selected per NTCIP
7.Diagnostic and Status Features. The functional status of the DMS communications and major DMS components shall be reportable to the DMS Central Software and displayable on the Central Computer monitor. This sha ll include:
a.Field Controller Communications – as “normal” or “failed”.
b.DMS Site Power – including the name of power supply, status (e.g., no error, power fail, voltage out of spec, or current out of spec) and type.
c.DMS Display Status – as {name of message being displayed}, “off”, or “disabled due to overheating”.
d.DMS Display Status shall include: When the sign controller is polled or a message is downloaded from the central controller or laptop computer, each pixel in the sign shall be read and its current state (full on, half on, or off), for the current displayed message, shall b e returned to the central controller. This will allow the central controller or laptop computer to show the actual message that is visibly displayed on the sign on an individual pixel basis in a WYSIWYG
893.07 Dynamic Message Sign (DMS).
(What -You-See-Is-What -You-Get) format. This pixel s tatus read shall not affect the displayed message in any way.
e.LED Intensity Level – the percentage of the “ Maximum Pulse Width Modulation (PWM) Level” which is either automatically selected by the Field Controller or is manually selected by a Central S oftware operator.
f.LED Intensity Control Method – as “automatic” or “manual”.
g.LED Pixel Status – displayed upon operator request, in a bit -map graphic format – “OK”, “Stuck at full on”, “Stuck at full off”, “Stuck at half on”, “Stuck at half off”.
h.LED Pixel Failure – as type of test run, pixel location, error type (e.g., stuck on, color error, mechanical error, stuck off, or partial error).
i.Regulated DC Power Supply Output – as “normal”, “failed”, or “Low”.
j.Internal DMS Temperature – LED pixel board temperature as measured by two internal sensors – presentable in degrees F and C.
k.Ambient DMS Site Temperature – outdoor air temperature as measured by an external temperature sensor – presentable in degrees F and C.
l.DMS Environmental Control Fan Status – as “on”, “off”, or “failed”.
m.Additional status and diagnostic information as specified within this Section.
8.Response to Errors. In the event of communication errors or a Field Controller lock -up, the DMS shall continue to display the cu rrent message. In the event of a power failure, the DMS shall display the current message upon restoration of power. All communications and/or power failures shall be dealt with as defined within the parameters of Section 3.5.2.3.5 of NTCIP 1203 (v02.39) , “Configure Event -Based Message Activation ”.
9.Transient Protection . DMS and Field Controller signal and power inputs shall be protected from electrical spikes and transients, as described herein:
a.AC power for all equipment shall be protected at the load center inside the control equipment cabinet. A parallel -connection surge suppresser, rated for a minimum surge of 10kA, shall be connected to the load center in a manner which protects the load center and the equipment it feeds.
b.AC power for control equipment, such as the Field Controller and communication device (Comm Device), shall be further protected by the use of a series -connected surge suppresser capable of passing 15 amperes of current. This device shall conform to the fol lowing requirements:
i.withstand a peak 20,000 ampere surge current for an 8 x 20 microsecond wave form; ii. 20 minimum peak surge occurrences; iii. clamp at 20,000 amperes, 340 volts, maximum; iv. maximum continuous operating current of 15 amperes at 120 Vac, 60 Hz;
v.series inductance of 200 microhenrys ( µH), nominal; vi. temperature range of -40°F to 185°F { -40°C to 85°C}; vii. approximate dimensions of 3 inches wide x 5 inches long x 2 inches high; and, viii. this device shall be UL 1149 recognized .
893.07 Dynamic Message Sign (DMS).
c.RS-485 communication lines between the Field Controller and the LED driver circuits shall be protected by avalanche diodes rated for 11.5 Volts at 10 amps and 14 Volts at 70 amps.
d.RS-232 and RS -485 communication ports in the Field Controller shall be protected by avalanche diodes connected between each signal line and ground.
e.RS-485 photo and temperature sensor communication ports in the control equipment shall be protected by avalanche diodes connected between each signal line and ground.
f.Incoming wireless communication links shall be protected by a series/parallel two -stage suppression device that provides a 200 -volt clamp.
g.Digital input and output lines from the DMS to the control equipment shall be protected at the control equipment by o ptically -isolated input and output modules, or optically -isolated solid - state relays.
i.Inputs shall include but shall not be limited to: DMS regulated power supply diagnostics and the AC power failure alarm. ii. Outputs shall include but shall not be limited to: cooling fan and defog/defrost fan control.
10.Sign Display and Visibility.
a.DMS Housing Alignment. The angular alignment of the sign housing shall be static in the vertical direction.
b.Display Visibility. The sign display shall be clearly visible and legible from distances between 170 ft. and 900 ft. {52 m and 270 m} under normal freeway operating conditions. The luminous intensity of the pixel shall not decrease more than 50 percent when viewed at an angle of ± 7.5 degrees for freeway signs and ± 15 degrees for arterial signs when centered about the optical axis and perpendicular to the surface of the display. The luminance level (or luminous intensity level) for different elements cannot vary by more than 10 percent of the mean output of all the elements. The contrast ratio shall be within the following ranges: EXTERNAL ILLUMINANCE (LUX) CONTRAST RATIO 40,000 7 to 50 20,000 7 to 50 10,000 7 to 50 4,000 7 to 50 400 7 to 50 40 15 to 100 The contrast ratio is to be calculated as follows: Contrast Ratio = (LA - LB)/LB where: LA is measured intensity resulting from the Active Test Area Under Illumination; and, LB is measured intensity resulting from the Inactive Test Area Under Illumination.
c.Text Size. When the sign displays text, the DMS shall display text in appropriate sizes and proportions to allow for sufficient sight distance. In locations with speed limits of 45 mph or higher, letter heights of 18 inches minimum shall be used. In locations with speed limits of less than 45 mph, letter height of 12 inches minimum shall be used. Text characters on full -matrix signs shall conform to ALDOT’s current font library used with ALDOT’s Intelligent Transportation Systems software applications .
11.ITS Cabinet. DMS components not contained within the DMS housing shall be installed within an ITS Cabinet as specified within this Specification of the type and location as shown on the Plans.
893.07 Dynamic Message Sign (DMS).
12.DMS Field Controller. Each DMS shall i nclude an associated Field Controller, which shall be installed within the sign housing itself or in an ITS Cabinet mounted on the sign structure. DMS Field Controller shall be either a Type 2070L controller or a proprietary controller. Both controller ty pes shall be fully programmed with the proper NTCIP protocols. If a proprietary controller is to be utilized, the DMS sign manufacturer shall be required to enter into a firm price supply contract with ALDOT for no less than five years at an end cost to AL DOT of no more than 80% of the most current State Contract Pricing for a standard Model 2070L controller. The DMS Field Controller shall conform to the following requirements:
a.Characteristics.
i.Each Field Controller shall be a microprocessor- based int egral unit containing its own regulated DC power supply. ii. Field Controller shall be housed in its own environmentally -resistant, durable, non - corrosive enclosure. iii. Field Controller enclosure shall: easily fit inside the control equipment cabinet; not exceed volume of five cubic feet; and occupies no more than 1.5 feet of vertical rack space. iv. Maximum weight of 25 pounds, including its enclosure.
v.Field Controller shall operate successfully throughout a temperature range of - 22°F to 185°F { -30°C to 85°C}, and it shall otherwise conform to the environmental standards outlined in NEMA TS2, Section 2. vi. Within the housing shall reside a remote fiber optic transceiver or a wireless transceiver as shown on the Plans. vii. Only one sign controller shall be used in each sign. No intermediate control device shall be used. viii. Field Controller hardware and software shall support all DMS communication, control, and diagnostic features as listed herein, as well as those features listed in the DMS and Central Software requirements. ix. Field Controller hardware and software shall permit communication with the Central Computer in either of the following modes, which shall be user selectable: • Polled Multi -Drop Operation in which the Field Controller informs the Central Computer of its current status, in response to a periodic automatic query from the Central Computer; or, • Event -Driven Operation in which the Field Controller responds to operator- initiated queries from the Central Computer, and it also calls the Central Computer as required herein.
b.Memory. DMS Field Controller shall have both permanent and changeable memory. Permanent memory shall be in the form of flash -PROM integrated circuits, or latest technology being utilized as approved by the Engineer, and shall contain the executable Field Controller software. Changeable memory shall be in the form of non -volatile changeable solid- state memory integrated circuit, or utilize latest technology as approved by the En gineer, and shall retain the data in memory for a minimum of one year following a power failure. The changeable memory shall contain the library of messages, the message display schedule and programmable operating parameters. Message storage requirements and attributes shall be as detailed within this Specification. Each message shall have the capability to be defined and stored as a six -frame message.
c.NTCIP Conformance and Management Information Base (MIB). The DMS Field Controller shall implement an NTCIP protocol stack that is based on the NTCIP Object Definitions for Dynamic Message Signs and Class B profile (NTCIP 1201, NTCIP 1203, NTCIP 2001, NTCIP 2101, NTCIP 2104, NTCIP 2201, NTCIP 2202, and NTCIP 2301). All communication will be made using ei ther SNMP or Simple Mail Transfer Protocol (SMTP) to retrieve and/or update the configuration of the DMS controller. Furthermore, if the DMS Field Controller is required to generate a response to the SNMP/SMTP request, then it should send the response to the requestor within five
5.seconds of receiving the request. NTCIP Conformance and MIB Objects shall meet the following functional requirements:
893.07 Dynamic Message Sign (DMS).
i.The DMS Field Controller shall implement an NTCIP protocol stack based on the NTCIP Object Definitions fo r DMS and Class B profile. ii. The configuration of the DMS Field Controller shall update using communication via SNMP and SMTP. iii. When the DMS Field Controller is required to generate a response to the SNMP/SMTP request, the controller shall send the r esponse to the requestor within five (5) seconds of receiving the request.
d.Data Transmission Requirements. Each Field Controller shall contain two EIA/TIA RS -232E communication ports:
i.one for remote wireless or fiber optic communications; and, ii. one for local communication with a laptop computer (using 10/100 BaseT Ethernet port). Both ports shall be capable of operation at baud rates of 9,600 to 56,000 bits per second or greater. The exact baud rate used shall be user selectable. The Contractor shall install a communications Comm Device as shown on the Plans and shall connect the Comm Device/transceiver to the EIA/TIA RS -232E port and communications device.
e.Clock. Field Controller shall contain a computer -readable time- of-year clock that has a lithium battery backup. The battery shall keep the clock operating properly for at least ten (10) years without external power, and the clock shall automatically adjust for daylight savings time and leap year through hardware or software or a combination of both. The clock shall be set by the Field Controller’s microprocessor, and it shall be accurate to within one (1) minute per month.
f.Password. The user shall be prompted to enter a password which shall be stored and verified by the Field Controller. The password shall not be echoed on the operator interface when entered by the user. The Field Controller shall be able to store a minimum of three (3) user passwords. Initial access passwords shall be installed by the Contractor as required by the Eng ineer.
13.Field Controller Software . The Field Controller shall instruct the LED driver circuitry in a manner which causes the desired message to be displayed on the DMS. At a minimum, signs shall be able to display the alphanumeric character fonts described within the Specification. Software shall handle such details as centering text on a display line, right justification, left justification, and legible spacing of letters and words. Software shall include a mechanism to allow the selection of a particular font style (character width and single -stroke vs. double- stroke, etc.). The software shall support a flashing feature and the alternating between frames of a multiple - frame message as described within the Specification. Software shall be designed to provide a default value for each display parameter supported.
a.Message Selection. In the absence of instructions to the contrary from the Central Software, the Field Controller shall implement a message selected from those stored in its memory, based upon date and time as specified by a message schedule feature. Display of a scheduled message may be overridden by instructions sent from a Central Software operator. A Central Computer or laptop computer shall be able to cause the Field Controll er to implement a particular message selected from those stored in its memory, or a new message entered via the Central Software. The Central Software shall be able to edit or completely replace a message stored in the Field Controller’s memory or revise the message schedule. In addition, it shall be able to cause the Field Controller to report its schedule or the text of any message stored in its memory. Software shall incorporate fail -safe procedures to check messages received and shall not change a mes sage stored in memory, the message currently displayed on the sign, the schedule stored in memory, or the current time unless the new message is correctly received. Normally, a displayed message shall remain on the sign until either a command to change the current message or the schedule in the Field Controller’s memory indicates that it is time for a different message. However, it shall be possible to confer a “ priority ” status onto any message, and a command to display a priority message shall overwrite any non -priority message being displayed.
893.07 Dynamic Message Sign (DMS).
b.LED Intensity Control System. The sign controller shall monitor the photocell circuits in the sign and convert the measured light intensity into the desired pixel brightness. The photo circuit readings shall be correlated with a brightness table in the sign controller. The brightness table shall have a minimum of 255 brightness levels. Automatic adjustment of the LED driving waveform duty cycle shall occur in small enough increments so that brightness of the s ign changes smoothly, with no perceivable brightness change between adjacent levels. The brightness table in each individual sign controller shall be adjustable from the central controller and can be customized according to the requirements of the install ation site. Each sign shall have its own, independent brightness table. Brightness shall be manually settable from the front panel of the controller and remotely from the central computer in 1% increments. The LED intensity control system shall conform to the following requirements:
i.The DMS shall contain three (3) photoelectric sensors, which shall be provided and installed as described within the Specification. ii. Manual and automatic intensity control modes shall be provided in a manner which enables the user to select the desired mode of operation, although the typical control mode shall be “automatic ”. iii. Automatic intensity control shall select one of at least sixteen LED intensity levels based on the sensed ambient light. The threshold points f or each intensity levels shall be user programmable. LED intensity levels shall be available in 1% increments and in a range of 1% to 100% of maximum display intensity. iv. Central Software shall contain a feature which enables the user to set a maximum u sable intensity threshold, which is a percentage of the absolute maximum possible intensity. This shall be for the purpose of providing intensity headroom, for future years when the LED’s begin to degrade. Daily LED intensity levels, selected via both au tomatic and manual control, shall be selectable from a range of 1% to 100% of this maximum intensity value. At the time of DMS delivery, this maximum intensity value shall be set to 67%.
v.Manual intensity control shall be achievable both locally and rem otely. Local control shall be with a laptop computer connected to the RS -232 port furnished in the Field Controller. Remote control shall be achieved by calling the Field Controller with a Central (remote) Computer.
c.Interference. The DMS intensity con trol circuits and power system shall utilize electrical devices to minimize radio frequency interference (RFI) noise generated by the DMS on the power line, as well as noise radiated by the DMS circuitry.
d.Communications. The Field Controller shall be able to communicate with the Central Computer via the remote - control port in either of two ways: polled multi -drop operation or event -driven direct operation. In polled multi -drop operation, there is constant communication between each Field Controller and the Central Computer. Several Field Controllers may be on the same communication channel, with each controller assigned a unique identification (ID) number. ID numbers for controllers shall conform to the NTCIP requirements for address num bers as indicated in this Specification, and a Field Controller shall only respond to messages labeled with its ID or to the broadcast address ID. In the polled multi -drop mode, Field Controllers never initiate communication, but merely transmit their res ponses to commands or queries from the Central Computer. The Central Computer queries each Field Controller frequently about its current status information. Each sign shall have a unique ID number, which the Region/Area or Central TMC Computer selects when it wants to issue a command or check on the status of the sign. The Field Controller shall also be able to call the Central Computer whenever it detects restoration of AC power at its DMS site and/or the internal DMS temperature exceeds the programmed s afety limit. If the Central Computer’s line is busy, the Field Controller shall keep trying at intervals selectable by the operator until communication is established. Once it connects with the Central Computer, the Field Controller shall transmit a stat us message that includes its identifying number. The Field Controller shall automatically disconnect dial -up communications within five (5) minutes if communication from the Central Computer is not detected.
893.07 Dynamic Message Sign (DMS).
Upon any status changes initiated either remote ly or locally to the DMS Field Controller, the Field Controller shall automatically update the Central Computer. The Field Controller shall be configured such that if one communication mode is operational (multi -drop vs. wireless), then the functionality o f the other mode is disabled. With either communication mode, it shall be possible for a maintenance technician to connect a laptop computer to the Field Controller’s local RS -232 port and carry out all DMS control and diagnostic operations that could be c arried out by the Central Computer. However, local laptop control capability shall be limited to only the DMS which is directly connected to that Field Controller.
e.Controller ID. An 8-byte identification (ID) code shall be assignable to each Field Controller.
f.LED Diagnostic Test Capability. Upon command from either a remote Central Computer or a locally -connected laptop computer running Central Software, the Field Controller shall test the electrical operation of all LED pixels and determine whet her they are operating with: “ normal” current, “ over” current (short circuit), or “under ” current (open circuit). This shall be accomplished via A/D conversion of each pixel’s forward current. The alternate method of constant current monitoring may be u sed. The resulting data shall be communicated to the Central Software using an NTCIP compliant method that can be transmitted according to the NTCIP Class D profile. LED pixel diagnostic data shall be displayable to a system operator as described in ALDO T’s Regional Traffic Management Center (RTMC) Standard Operating Procedures Manual.
g.Power Interruptions. Contents of the Field Controller’s memory shall be preserved by battery backup during AC power interruptions and the Controller shall automatically resume operation once AC power is restored. Upon recovering from a power interruption, the Field Controller shall leave the current message on the sign until it receives a command to change it, or until a message change is called for by the sign schedule. The Field Controller shall report to the Central Computer that it has just recovered from a power interruption.
h.DMS Communications Devices.
i.Fiber Optic Data Transceivers . Fiber Optic Data Transceivers shall be in accordance with Article 893.04, “Network Devices” and shall be fully compatible with the existing fiber optic network devices and their control and diagnostic bays in Hub and TMC buildings. Network Devices shall be single -mode and RS -232. Fiber optic transceivers shall be mounted within t he DMS exterior equipment cabinet mounted on the sign structure itself. If shown on the Plans, the Contractor shall supply one (1) remote or field fiber optic transceiver and one (1) head- end fiber optic transceiver for each direct connect DMS. These Fibe r Optic Data Transceivers both field and head -end shall be paid under their respective pay item number. ii. Wireless Data Transceivers. The Wireless Data Transceiver units required on remote signs, those not direct -connected via fiber optic cable, shall be remote data units as supplied by the Department and as indicated on the Plans. These units shall be set up for data transmission, RS -232. ALDOT shall provide the Contractor with one (1) remote unit per remote sign and one (1) head end unit that has the c apability to communicate with a maximum of 30 multiple remote wireless units. The Contractor shall indicate which DMS will utilize wireless within the material submittal to the Engineer.
14.National Transportation Communications for ITS Protocol (NTCIP) for DMS. The DMS shall meet the National Transportation Communications for ITS Protocol (NTCIP) requirements as defined within ALDOT’s ITS Test Manual Document No. ITS-035 “Supplemental Dynamic Message Sign (DMS) NTCIP Requirements”. This Supplemental Spe cification document may be obtained by contacting ALDOT’s Design Bureau – Traffic Engineering Division or Construction Bureau. Please note that if a Conformance Group is mandatory, then all objects within that group listed as mandatory shall be supported. If the DMS does not support the functionality associated with a
893.07 Dynamic Message Sign (DMS).
specific object or group of objects, yet still meets ALDOT’s minimum requirements, then the device must respond with a noSuchName error response when requests are made for those objects. The NTCIP Protocol supplied shall be the most recent version/release implemented. The originally supplied version of the NTCIP software supplied with the DMS shall be fully capable of upgrade by the DMS supplier and with no cost to the State.
15.Laptop Computer. The Contractor shall have a laptop computer for testing that will run the field controller and NTCIP testing software as required within the Specifications. The laptop computer shall remain the property of the Contractor after the completion of all DMS testing.
16.Software Upgrades. The sign manufacturer shall supply to the Department a statewide license for the unrestricted utilization of internal control and remote sign software contained herein. Furthermore, the sign manufacturer shall supply t o the Department all future internal control software upgrades of the originally supplied software version at no cost to the Department.
17.Supporting Structure Supporting Structure used for mounting the equipment shall conform to the requirements given in Section 718. DMS shall be attached to their overhead support structures with aluminum support beams comprised of aluminum alloy 6061- T6. The number of support beams needed and the method of attaching the support beams to the sign housing and the overhead sign support structure shall be as required to conform to the current edition of AASHTO’s “ Standard Specifications for Structural Supports for Highway Signs, Lu minaries, and Traffic Signals” and all other structural requirements specified for this contract. The support beam attachment shall also be certified by a Professional Engineer in accordance with Section 718 . Where overhead support structures extend over both directions of a roadway, these structures shall be designed to accommodate future DMS for the other direction along with any necessary walkway, catwalk or access ladder additions. Also, overhead support structures with indicated future DMS on the Pla ns shall be designed to accommodate these future features along with any necessary walkway, catwalk or access ladder additions. These overhead support structures shall be supplied and installed with a vibration dampener (as approved by the Engineer) in pl ace of the future DMS. The Contractor’s design submittal shall include and indicate these items within their respective support structure design computations and drawings.
18.Concrete Foundation Concrete Foundation used for Supporting Structure shall conform to the requirements given in Section 718.
19.Electrical Power Service Electrical Power Service shall be in accordance with Article 893.13, “Electrical Power Service and Transformer” .
b.Walk-In DMS.
1.General .
a.Housing Service Access. The Contractor shall provide each Walk -In DMS with a suitable catwalk for service access to the DMS. Include with all Walk -In DMS housings a 4 ft {1.2 m} wide or greater catwalk that extends from the right or left shoulder support structure, as shown on the Plans, to flush with or extending underneath the sign enclosure. Safety rails shall be provided as a part of the catwalk. Provide a catwalk that will support at least 2,000 lbs. {907 kg} with no discer nible displacement. The Walk -In DMS housing and all of its equipment and materials shall be designed and constructed so that all maintenance and repair is performed from within the DMS housing, with the exception of structural members and components thereo f. All Walk -In DMS housings shall have a minimum of 2 ft. 10 in. {86 cm} wide pathway inside the sign housing to allow adequate room for maintenance personnel. There shall be 18 inches {46 cm} of clear area between all equipment along the entire length of the sign housing from the 24 inch {61 cm} walkway up to 6 feet {1.8 m} above the 24 inch {61 cm} walkway. The walkway shall conform to NEMA TS4 Section 3.2.8.2 “Work Area” unless otherwise specified within this Specification. Walk-In DMS housing doors shall be installed on each side of the DMS housing and shall open outward toward the housing’s rear wall. DMS housing doors shall be rain -tight/dust -tight and shall
893.07 Dynamic Message Sign (DMS).
have minimum 2.5 ft. by 6 ft. {0.76 m by 1.8 m} opening. The Walk -In DMS housing doors shal l be furnished with a door lock that is keyed to use a Corbin No. 3 key. The door lock shall be a swing cover, plated brass, tumbler type that is designed for outdoor “ no freeze up ” applications. The latching/locking mechanism shall include a handle on t he interior of the housing, so that a person with no key and no tools cannot become trapped inside the housing. The door latch system shall be capable of being locked, unlocked, opened, or closed from either the outside or inside of the housing. The Walk -In DMS housing doors shall contain hold -open braces and door stops that allow the door to be held in the full, 90, 45, and 30 degree open positions without the use of tools. The hold-open braces, doors, and hinges shall be designed to withstand a minimum wind speed as defined on the Plans (reference ALDOT Index Nos. 71001- 71002, Standard Dwg. No. IHS -710, “ Wind Velocity Chart for Roadside Signs”) while the door is held in any of these positions. One of the two Walk -In DMS housing doors will require remova ble rails to be mounted on the inside of the housing. Rails shall be installed horizontally and spaced vertically every twelve inches to a height of 42 inches {106 cm} above the internal walkway. Rail size shall be as required to prevent a 300 pound {136 kg} person from falling out of the DMS housing, if the doorway is open. Rails shall be attached to the sign housing with stainless steel hardware and designed for removal with simple hand tools. Rails shall meet OSHA 1910.36 paragraph 6 safety requiremen ts. Prior to DMS installation, the Engineer will advise the Contractor as to which doorway will require rails. In each Walk -In DMS housing, provide folding step or a similar mechanism to allow a technician to reach the upper interior of the sign during ma intenance without the need of a portable device such as a ladder or step stool and which does not interfere with the normal operation of the sign. External repair of the housing and sign face shall be the only items requiring access to the external portio ns of the housing.
b.Interior Ventilation. Walk-In DMS housing shall conform to the ventilation requirements of NEMA TS4 Section 3 “ DMS Mechanical Construction ”.
c.Interior Lighting and Duplex Receptacles. The DMS Walk -In housing shall contain interior l ighting which conforms to NEMA TS4 Section 3.2.8.3 “Nighttime Service Lighting ” utilizing UL Listed LED lighting fixtures rated for outdoor use and extreme temperatures. Comparable fluorescent lighting may be used but must be submitted via an exception l etter to the Engineer for review and approval. If approved, this fluorescent lighting must meet same luminance lighting levels as those obtained with above lighting system. Proposed fluorescent light ballasts shall be rated for operation at 0°F { -18°C}. The light circuit shall be controlled by a manual timer switch having either an adjustable on time of two (2) hours or a four hour timer with adjustable on time of 15 minute increments; and shall be located on the inside of the housing near the door. The light switch timer shall begin timing a “lights on ” condition of two hours minimum, but no more than four hours, upon activation of the switch. Turning the switch off and back on will reset the time out to another “ lights on ” cycle from the time of the of f-on cycle of the switch. Upon time out of this “ lights on ” period, the switch shall deactivate the interior lighting by disconnecting the 120 Vac ungrounded circuit from the light fixture. Use a circuit breaker to protect two separate duplex 120V Ground Fault Circuit Interrupter (GFCI) receptacles that are provided on each end of the sign case for the use of maintenance personnel. Use receptacles rated for 20 amperes. Each receptacle shall be fed from a 20 ampere nominal 120 Vac circuit.
2.Functional Requirements. The DMS shall display user defined text and images. The DMS shall display screens statically, flashing, and as a series of displays. The DMS shall display screens through user defined actions with the DMS user interface and remotel y. The DMS shall display a test screen when defined by the user for: full display (brightness configured), characters (configured alpha, numeric, and special characters), and patterns (configured flashing, corners). The DMS shall reset display after power interruption. The DMS shall operate without interruption with a primary power source.
893.07 Dynamic Message Sign (DMS).
The DMS shall reset automatically when requested by a user from the DMS user interface and remotely.
3.Technical Specifications. DMS shall include associated cont rol, diagnostic equipment, wireless or fiber optic communications, LED lights, and power source. The DMS must meet the requirements of NEMA TS4 “ Hardware Standards for Dynamic Message Signs (DMS), with NTCIP Requirements”. A DMS is classified by the type of sign display and the type of mechanical construction. The Walk -In DMS must meet the mechanical construction requirements of NEMA TS4 Section 3.2.8 “Walk-In Access DMS ” unless otherwise specified within this Specification. The Walk -In DMS shall meet the following weight, size, power, and display characteristics: DESCRIPTION SPECIFICATION Size W -1 Size W -2 Weight (maximum): 5000 lbs {2268 kg} 3,500 lbs {1,588 kg} Housing Dimensions (maximum): Width Height Depth 38 ft {11.6 m} 11 ft {3.4 m} 5 ft {1.5 m} 25 ft {7.6 m} 8 ft {2.5 m} 4 ft {1.3 m} Display Dimensions (minimum): Width Height 27 ft {8.2 m} 6.25 ft {1.91 m}
22.67 ft {6.91 m}
6.25 ft {1.91 m} Power (maximum): For signs ≤ 10 characters wide For signs > 10 characters wide 6,000 W 13,000 W 6,000 W 13,000 W Display Viewing Angle: 30 degrees 30 degrees Display Type: Full Color, Full Matrix Full Color, Full Matrix Pixel Spacing: 20 mm 20 mm
c.Front Access DMS.
1.Functional Requirements. The DMS shall display user defined text and images. The DMS shall display screens statically, flashing, and as a series of displays. The DMS shall display screens through user defined actions with the DMS user interface and remotely. The DMS shall display a test screen when defined by the user for: full display (brightness configured), characters (configured alpha, numeric, and special characters), and patterns (configured flashing, corners). The DMS shall reset display after power interruption. The DMS shall operate without interru ption with a primary power source. The DMS shall reset automatically when requested by a user from the DMS user interface and remotely.
2.Technical Specifications. DMS shall include associated control, diagnostic equipment, wireless or fiber optic communi cations, LED lights, and power source. The DMS must meet the requirements of NEMA TS4 “ Hardware Standards for Dynamic Message Signs (DMS), with NTCIP Requirements”. DMS are classified by the type of sign display and the type of mechanical construction. The Front Access DMS must meet the mechanical construction requirements of NEMA TS4 Sections 3.2.5 “Front and Rear Access” and 3.2.6 “Front Access DMS ” unless otherwise specified within this Specification.
893.07 Dynamic Message Sign (DMS).
The Front Access DMS shall meet the following weigh t, size, power, and display characteristics: DESCRIPTION SPECIFICATION Size FA -1 Size FA -2 Weight (maximum): 2,500 lbs {1,134 kg} 3,500 lbs {1,588 kg} Housing Dimensions (maximum): Width Height Depth 20 ft {6.1 m} 7.5 ft {2.3 m} 2.5 ft {0.8 m} 28 ft {8.5 m} 8.5 ft {2.6 m} 2.5 ft {0.8 m} Display Dimensions (minimum): Width Height
16.25 ft {5.04 m}
4.16 ft {1.27 m}
22.67 ft {6.91 m}
6.25 ft {1.91 m} Power (maximum): For signs ≤ 10 characters wide For signs > 10 characters wide 6,000 W 13,000 W 6,000 W 13,000 W Display Viewing Angle 30 degrees 30 degrees Display Type Full Color, Full Matrix Full Color, Full Matrix Pixel Spacing 20 mm 20 mm
d.Dedicated DMS.
1.Functional Specifications. The DMS shall display images (as applicable per DMS usage) and user defined text. The DMS shall display screens statically and flashing. The DMS shall display screens through user defined actions with the DMS user interface and remotely. The DMS shall display a test screen when defined by the user. The DMS shall reset display after power interruption. The DMS shall operate without interruption with a primary power source. The DMS shall reset automatically when requested by a user from the DMS user interface and remotely.
2.Technical Specifications. DMS shall include associated control, diagnostic equipment, wireless or fiber optic communications, LED lights, and power source. The DMS must meet the requirements of NEMA TS4 “ Hardware Standards for Dynamic Message Signs (DMS), with NTCIP Requirements”. DMS are classified by the type of sign display and the type of mechanical construction. The Dedicated DMS must meet the mechanical construction requirements of NEMA TS4 Sections 3.2.5 “Front and Rear Access” and 3.2.6 “Front Access D MS” unless otherwise specified within this Specification or shown on the Plans. The Dedicated DMS shall meet the following weight, size, power, and display characteristics:
893.08 Environmental Sensor.
DESCRIPTION SPECIFICATION Size D -1 (CSLS) Size D -2 (CTTS) Display Dimensions (maximum): Width Height Depth As shown on the Plans As shown on the Plans 6 in {15.2 cm} As shown on the Plans 2.0 ft {61.0 cm} 6 in {15.2 cm} Character Height: As shown on the Plans 18 in {45.7 cm} Power 120/240 Vac 120/240 Vac Communications Ethernet, RS -232 Ethernet, RS -232 Display Viewing Angle 30 degrees 30 degrees Viewing Distance 1,100 ft 1,100 ft Display Type Full Color, Full Matrix Full Color, Full Matrix where CSLS is Dedicated Changeable Speed Limit Sign and CTTS is Dedicated Changeable Travel Time Sign. DESCRIPTION SPECIFICATION Size D -3 (DLCS) Size D -4 (DLCS) Display Dimensions (maximum): Width Height Depth As shown on the Plans 1.5 ft {45.7 cm} 6 in {15.2 cm} As shown on the Plans 2.0 ft {61.0 cm} 6 in {15.2 cm} Character Height: 12 in {30.5 cm} 18 in {45.7 cm} Power 120/240 Vac 120/240 Vac Communications Ethernet, RS -232 Ethernet, RS -232 Display Viewing Angle 30 degrees 30 degrees Viewing Distance 1,100 ft 1,100 ft Display Type Full Color, Full Matrix Full Color, Full Matrix where DLCS is Dedicated Lane Control Sign.
893.08 Environmental Sensor.
a.General.
1.Data Processing Unit. The Data Processing Unit shall perform any data processing and storage required on the data received from the sensors. Each data record shall include sensor readings of a user -defined time interval of 5 to 60 minutes. The Data Processing Unit shall be capable of transmitting an alarm in the event of a low power supply, complete power loss, or return to normal operation. The Data Processing Unit shall be able to transmit alarms for user -defined thresholds for sensor parameters. The Data Processing Unit shall operate with a minimum of 20 sensors concurrently. The Data Processing Unit shall process with a minimum of 512 MB RAM. DESCRIPTION SPECIFICATION Temperature Operating Range -22°F to 140°F { -30°C to 60°C} minimum Housing Field Hardened Communications Ports RS-232, RS -485, Ethernet Power 24 Vdc, 4 A maximum
893.08 Environmental Sensor.
2.Communications. The environmental sensor, whether an individual sensor or working as a system, must be capable of transmitting all collected data. See above table for minimum communication port requirements.
3.Software. All manufacturer software required to configure and operate the Environmental Sensor system shall be provided.
4.Cabinet. Any equipment not rated for outdoor use shall be enclosed in a cabinet as specified within the Specifications.
b.Weather Sensors. Provide an environmental Weather Sensor that shall provide specified environmental information for the purpose of evaluating environmental conditions for hazards.
1.Air Temperature. An Air Temperature Sensor determines the temperature of the surrounding environment. The air temperature sensor shall provide temperature information of the surrounding environment in all weather conditions, without delay. DESCRIPTION SPECIFICATION Temperature Operating Range -40°F to 140°F { -40°C to 60°C} Accuracy ±0.4°F (±1.0°F if < -22°F) {±0.22°C} Housing Weatherproof International Protection (IP) 66 rated Humidity Operating Range 5 – 100%
2.Relative Humidity. A Relative Humidity Sensor uses an industry standard sensor to determine the current relative humidity. The relative humidi ty sensor shall provide information on relative humidity of the surrounding environment in all weather conditions and all humidity ranges, without delay. DESCRIPTION SPECIFICATION Temperature Operating Range -40°F to 140°F { -40°C to 60°C} Accuracy ± 2% Relative Humidity Housing Weatherproof IP 66 rated Power 12 Vdc Humidity Operating Range 5 - 100%
3.Visibility . A Visibility Sensor detects low visibility conditions, which might occur during fog or falling precipitation. The visibility sensor shall provide information on the visibility seen by drivers in all weather conditions, without delay. The visibility sensor shall measure a two (2) minute sample, providing the average over that interval. The visibility sensor shall operate with a heated hood to allow continuous operation in all weather conditions.
893.08 Environmental Sensor.
DESCRIPTION SPECIFICATION Temperature Operating Range -40°F t o 140°F { -40°C to 60°C} Accuracy ± 10% Range 6,560 ft {2000 m} minimum Housing Weatherproof IP 66 rated Power 12 or 24 Vdc Signal Output 4 - 20 mA Sensor Type Light
4.Precipitation Rate. A Precipitation Rate Sensor determines the current rate of precipitation. The precipitation rate sensor shall provide information on the rate of precipitation for all precipitation types, without delay. DESCRIPTION SPECIFICATION Temperature Operating Range -40°F to 122°F { -40°C to 50°C} Precipitation Type Rain, Snow Precipitation Quantity (Reproducibility) > 90% or ± 5% Housing Weatherproof IP 66 rated Power 12 Vdc Humidity Operating Range 5 - 100%
5.Barometric Pressure. A Barometric Pressure Sensor uses an industry standard sensor to determine the current barometric pressure. The barometric pressure sensor shall provide barometric pressure information in all weather conditions, without delay. DESCRIPTION SPECIFICATION Temperature Operating Range -40°F to 140°F { -40°C to 60°C} Range 850 - 1050 mbar minimum Accuracy ± 0.5 mbar at 32°F to 140°F {0°C to 40°C} Housing Weatherproof IP 66 rated Power 12 Vdc Humidity Operating Range 5 - 100%
6.Wind Speed and Direction. A Wind Speed and Direction Sensor uses an industry standard sensor to determine the current wind speed and direction. The wind speed and direction sensor shall provide information on the speed and direction of the wind in all weather conditions , without delay.
893.08 Environmental Sensor.
DESCRIPTION SPECIFICATION Temperature Operating Range -40°F to 140°F { -40°C to 60°C} Range: Direction Speed 0 - 359.9 degrees 0 - 75 m/s minimum Accuracy: Direction Speed ±3° ± 0.3 m/s Housing Weatherproof IP 66 rated Power 12 Vdc Humidity Operating Range 5 - 100%
c.Road Sensors.
1.In Road Pavement Temperature. An In Road Pavement Temperature Sensor uses an in road unit to determine the temperature of the roadway. The in road pavement temperature sensor shall provide temperature information of the pavement surrounding the sensor in all weather conditions, without delay. DESCRIPTION SPECIFICATION Temperature Operating Range -40°F to 158°F { -40°C to 70°C} Temperature Observation Range -40°F to 158°F { -40°C to 70°C} Accuracy ±2°F {±1.11°C}
2.Remote Road Pavement Temperature. A Remote Road Pavement Temperature Sensor uses a non -intrusive remote sensor to determine the temperature of the roadway. The remote pavement temperature sensor shall provide temperature information of the pavement at which the sensor is directed, without delay. DESCRIPTION SPECIFICATION Temperature Operating Range -40°F to 158°F { -40°C to 70°C} Temperature Observation Range -40°F to 158°F { -40°C to 70°C} Accuracy ±2°F {±1.11°C}
3.Pavement Precipitation Depth. A Pavement Precipitation Depth Sensor determines the thickness of ice, water, or snow currently on the roadway. The pavement precipitation depth sensor shall provide information on the depth of precipitation on the roadway in all weather conditions, witho ut delay. DESCRIPTION SPECIFICATION Temperature Operating Range -40°F to 158°F { -40°C to 70°C} Water Depth Observation Range 0.01 - 0.50 in {0.3 - 12.7 mm} Water Depth Accuracy ± 0.1 mm Surface Conditions Dry, Damp, Wet, Snow, Ice
893.09 Highway Advisory Radio (HAR).
893.09 Highway Advisory Radio (HAR).
a.General.
1.HAR Descriptions. The Contractor shall provide and install a Highway Advisory Radio (HAR) system that shall transmit a user defined changeable message for the purpose of relaying traffic, hazard, emergency, or other information to the public. ALDOT uses the following HAR systems:
a.Permanent HAR. A Permanent HAR uses a permanently mounted HAR system that transmits a user defined changeable message on AM or FM radio frequencies.
b.Portable HAR. A Portable HAR uses a portable, trailer mounted, HAR system that transmits a user defined changeable message on low -power AM radio.
c.Configuration and Management. The HAR shall be configured and managed both locally and remotely.
2.Radio Transmitter. The Radio Transmitter subsystem shall meet the following requirements:
a.Capability for adjustment of radio frequency (RF) output power and audio input levels through easily accessible controls.
b.A provision for automatic station identification (Automatic ID) shall be included.
3.Digital Recorder/Player. A Digital Recording Unit shall be provided with the following minimum functional requirements:
a.Digitally record and store messages or audio files.
b.Store a minimum of 250 di stinct digital messages or audio files, with variable length messages, which can be recorded, stored, or deleted independently.
c.Provide a minimum of 80 minutes of total recording time.
d.Allow the recording of a message while another message is being played (simultaneous record/playback).
e.Provide capability for message retention (indefinitely) without the use of a battery, in the event main site power is lost.
f.The Digital Recorder/Player shall provide Standard DTMF (dual tone multi frequency) tones as applicable.
g.Audio Frequency Input Impedance: 600 ohm (Ω) and Hi “Z” (The Contractor shall provide a compatible microphone).
h.Modulation Limiter: Built -in 100% peak modulation limiter.
4.Simulcast Synchronization.
a.Each synchronized HAR sys tem shall be equipped with a GPS synchronizer, which shall provide the capability to phase -lock the transmitters to a common reference carrier to minimize heterodyne.
b.The GPS Synchronizer subsystem shall have been successfully tested in conjunction with the transmitter and certified by the FCC in accordance with the provisions of FCC Section No. 90.242.
5.HAR Cabinet. The cabinet used to contain HAR equipment shall be in accordance with the requirements as specified within the Specifications and as sho wn on the Plans.
6.Antenna Subsystem.
a.Omni -directional, vertically polarized antenna providing high efficiency with low radiation angle performance.
b.Provide an Effective Isotropic Radiated Pattern (EIRP) of 2.0 mV/m @ 1.5Km (0.93 miles) per FCC reg ulations.
c.Provide an overall VSWR of 1:4 or better with direct feed (without antenna tuner).
d.Antenna shall be constructed from anodized aluminum with adjustable tip to minimize the standing waves.
893.09 Highway Advisory Radio (HAR).
7.Grounding .
a.The antenna/grounding design shall be provided for each proposed HAR site taking into account local site conditions, soil conditions, antenna type and exact location, along with the ground plane designed.
b.8 AWG grounding wire shall be installed.
c.The HAR antenna grounding design and design submittal shall be either conducted by or signed off by the HAR equipment manufacturer. The HAR antenna grounding design and submittal package shall include the requirements as specified within this Article and as defined in Sub-Article 729.03(i)1.c, “ HAR Antenna Grounding ”.
d.The HAR antenna subsystem shall be provided with an efficient ground plane properly tuned to the operational frequency and ground/soil type and conditions.
e.The grounding subsystem shall consist of a set of horizontal radials of heavy gauge wire or radial loops extending outward from the base of the antenna to ensure proper grounding and performance requirements.
f.An alternate ground system method and configuration may be designed and submitted as part the HAR grounding subsystem design submittal depending on site conditions to the Department for review and approval prior to construction.
g.Regardless of the grounding type, the Contractor shall be responsible for providing a complete grounding subsystem that supports the minimum 4 -mile transmission radius system performance as described herein.
h.Antenna mast, or tower sections shall be bonded and grounded through HAR electrode system.
i.Communications cables with metalli c sheath and armored cables if used shall be grounded by using appropriate cable grounding kits as recommended by the cable manufacturer.
8.HAR System Software. In areas where HAR systems exist the Contractor shall integrate new HAR stations with existin g HAR server software and hardware. The HAR software application shall provide centralized operator control and monitoring of dispersed HAR and flashing beacon subsystems with the following minimum features and capabilities:
a.Shall allow the HAR system o perator to select, display, schedule, and modify messages, transmit messages, list diagnostic information, and control of HAR field stations via the network.
b.Shall provide for multiple modes of operation as follows: transmitter control, record and moni toring of messages, playing of pre- recorded messages, emergency broadcast mode (live), and National Oceanic and Atmospheric Administration (NOAA) weather radio broadcast when alert is activated.
c.Shall import audio files created externally and log updates.
d.Shall convert typed text into voice that can be used for a clear understandable message.
b.Permanent HAR. The Permanent HAR shall also meet the following minimum requirements:
1.broadcast user defined audio;
2.transmit a test broadcast when defined by the user;
3.reset radio transmission after power interruption and when requested by the user;
4.operate without interruption from: hardwired 120 Vac power source, solar panel power source, and battery backup power source; and,
5.operate without inte rruption from battery backup power source for a duration of three (3) days without charging. The Permanent HAR shall also meet the following minimum requirements:
893.09 Highway Advisory Radio (HAR).
DESCRIPTION SPECIFICATION Power 120 Vac 12 Vdc Solar 180 Amp Battery Backup providing 3 days of continuous use Audio Recoding Limit 80 minutes minimum Transmit Radius 3 - 5 miles {6 - 10 km} Transmitter FCC Approved Part 90.242 GPS synchronization Antenna Height 50 ft maximum Enclosure NEMA Type 3R Weatherproof Broadcast Power Adjustable up to 10 W Broadcast Frequency Range 530 - 1700 kHz Frequency Stability ± 20 Hz Audio Distortion < 1.5%, 200 Hz to 3 kHz Audio Frequency Response ± 3 dB Noise Level 70 dB maximum below 95% modulation level, 100 Hz to 3 kHz Modulation 99%, -40 dB to 20 dB Operating Temperature -40°F to 85°F { -40°C to 29°C} Operating Humidity 95% (non -condensing) Communication Ports Ethernet, RS 232 Serial, USB Flash Drive
c.Portable HAR. The Portable HAR shall also meet the following minimum requirements:
1.broadcast user defined audio;
2.transmit a test broadcast when defined by the user;
3.reset radio transmission after power interruption and when requested by the user;
4.operate without interruption from: solar panel power source and battery backup power source; and,
5.operate without interruption from battery backup power source for a duration of 10 days without charging. The Portable HAR shall be mounted on a single axle trailer, supporting the antenna, radio, power supply, and other equipment during operation. The Portable HAR shall be towed with a standard ball hitch. The trailer shall be in compliance with federal and local regulations and be roadworthy. The Portable HAR shall also meet/provide the followi ng requirements: DESCRIPTION SPECIFICATION Power Primary Solar 12 Vdc, 2 A maximum 200 A Battery providing up to 10 days of continuous use Audio Recoding Limit 80 minutes minimum Transmit Radius 3-5 miles {6 -10 km} Transmitter FCC Approved part 90.242 GPS synchronization Antenna Height 25 ft maximum Enclosure NEMA Type 3R Weatherproof Broadcast Power Adjustable up to 10 W Broadcast Frequency Range 530 - 1700 kHz Frequency Stability ± 20 Hz Audio Distortion < 1.5%, 200 Hz to 3 kHz
893.10 Conduit, Conductor, Locate Tone Wire, Messenger, and Warning Tape.
Audio Frequency Response ± 3 dB Noise Level 70 dB maximum below 95% modulation level, 100 Hz to 3 kHz Modulation 99%, -40 dB to 20 dB Operating Temperature -40°F to 85°F { -40°C to 29°C} Operating Humidity 95% (non -condensing) Communication Digital modem, RS 232 Serial, USB Flash Drive
893.10 Conduit, Conductor, Locate Tone Wire, Messenger , and Warning Tape .
a.Non-Metallic Conduit.
1.General Non -Metallic Conduit. Non-Metallic Conduit for ITS and related applications shall be Rigid Non -metallic Conduit (RNC) [i.e. Rigid Polyvinyl Chloride (PVC) conduit, Liquid -tight Flexible Non -metallic Conduit (LFNC), or High Density Polyethylene (HDPE) conduit] as indicated within this Section . All conduits shall be homogeneous and shall have no visible cracks or holes. Non -metallic conduit shall be of the size and type as shown on the Plans. Non-metallic conduit shall be colored for intended usage as defined by the American Public Works Association (APWA) Uniform Color Codes unless ot herwise shown on the Plans or directed by the Engineer. The color codes for underground utilities as adopted by the Department from APWA are as follows: COLOR USAGE Red Electrical power and lighting Orange Telecommunications, alarm or signal lines (ALDOT uses this color for ITS and fiber optics.) Yellow Gas, oil, steam, petroleum, or other gaseous or flammable material Green Sewers and drain lines Blue Drinking water Purple Reclaimed water, irrigation and slurry lines All non -metallic conduits shall be watertight sealed using solid or split ring compression type duct plugs. Duct seal shall not be allowed. Couplings for HDPE conduits shall be compression type fittings that provide a watertight seal and full pullout res istance meeting ASTM D- 3350. LFNC shall be Underwriters Laboratories (UL) Listed (UL 1660 “ Liquid -Tight Flexible Nonmetallic Conduit ”) category code DXOQ and used in accordance with NEC Article 356. Fittings for LFNC shall be mechanical connections manufa ctured to work specifically with LFNC. PVC cement shall not be used on LFNC. Flex shall be rated for 1000 Volts maximum. When being installed for power applications, conduit and fittings shall be Underwriters Laboratories (UL) Listed for use as electrica l conduit and carry the UL label. This UL label shall be marked as follows: (a) at 10 feet {3 m} length intervals for conduit; and, (b) stamped or molded on each fitting.
2.Exposed Non -Metallic Conduit. Non-Metallic conduit installed exposed (above gra de) shall be Rigid Polyvinyl Chloride Conduit (Type PVC) or Liquidtight Flexible Nonmetallic Conduit (Type LFNC) . The exposed conduit shall be ultra-violet (UV) stable (sunlight resistant) per UL 651. Exposed conduit shall be Schedule 80 PVC and shall comply with the following conduit and fitting standards:
a.NEMA Standards Publication No. TC -2 “Electrical Polyvinyl Chloride (PVC) Conduit”,
b.ASTM D4396, “Standard Specifications for Rigid Poly (Vinyl Chloride) (PVC) and Chlorinated Poly (Vinyl Chloride) (CPVC) Compounds for Plastic Pipe and Fittings Used in Non-Pressure Applications ”,
c.UL Standards No. 651 “ Standard for Schedule 40, 80, Type EB and A Rigid PVC Conduit and Fittings ”, and
893.10 Cond uit, Conductor, Locate Tone Wire, Messenger, and Warning Tape.
d.NEMA TC -3 “Polyvinyl Chloride (PVC) Fittings for Use with Rigid PVC Conduit and Tubing ”.
3.Underground Non -Metallic Conduit. Non-Metallic Conduit installed underground (below grade) shall be High Density Polyethylene Conduit (Type HDPE). Underground HDPE conduit shall be Schedule 80 or SDR -11 (depending upon UL Listing requirements for non -fiber installations and as shown on the Plans). If rocky soil conditions are encountered during precision directional bore installations, SDR -9 HDPE may be required. Undergroun d HDPE conduit shall comply with the following conduit and fitting standards:
a.NEMA Standards Publication No. TC -7, "Smooth -Wall Coilable Electrical Polyethylene Conduit ",
b.ASTM D2239, " Standard Specification for Polyethylene (PE) Plastic Pipe (SIDR -PR) Based on Controlled Inside Diameter ",
c.ASTM D3035, " Standard Specification for Polyethylene (PE) Plastic Pipe (DR -PR) Based on Controlled Outside Diameter ",
d.ASTM F2160, " Standard Specification for Solid Wall High Density Polyethylene (HDPE) Conduit Based on Controlled Outside Diameter (OD) ",
e.ASTM D3350, " Standard Specification for Polyethylene Plastics Pipe and Fittings Materials " for a minimum cell classification of PE334480E/C,
f.ASTM F2176, " Standard Specification for Mechanical Couplings Used on Polyethylene Conduit, Duct and Innerduct ", and
g.UL Standards No. 651A “Standard for Schedule 40 and 80 High Density Polyethylene Conduit ”.
b.Metallic Conduit. Metallic Conduit for ITS and related applications shall be Rigid Metal Conduit ( Type RMC) of Galvanized Steel, thick wall, unless otherwise shown on the Plans. Metallic conduit shall be of the size shown on the Plans. All metallic conduits shall conform to applicable Underwriters Laboratories (UL), NEC, ANSI, and National Electrical Contrac tors Association Standard (NECA) conduit and fitting standards. Galvanized Steel RMC shall also conform to: UL Standards No. 6 " Electrical Rigid Metallic Conduit - Steel"; ANSI Standard Publication No. C80.1 “ American National Standard For Electrical Ri gid Steel Conduit (ERSC) ” with the applicable zinc protection coating requirements; and, ANSI Standard Publication No. NECA 101 “Standard for Installing Steel Conduits (Rigid, IMC, EMT) ”. All conduits shall be homogeneous and shall have no visible cracks or holes. All metal accessories and fitting used with the conduit shall be compatible and shall also meet the galvanization requirements as specified within the Specification. Conduit and fittings shall be Underwriters Laboratories (UL) Listed for use as electrical conduit and carry the UL label. This UL label shall be marked as follows: (a) at 10 feet {3 m} length intervals for conduit; and (b) stamped or molded on each fitting. Use of RMC for electrical cable shall be installed in accordance with the N EC including bond grounds. When installed on a bridge or similar surface, the couplings shall be designed and factory certified to handle expected expansion and contractions on a bridge application.
c.Reinforced Thermosetting Resin Conduit (RTRC). Reinf orced Thermosetting Resin Conduit (RTRC) shall be of reinforced thermosetting resin material with outer diameter size as shown on the Plans meeting or exceeding the latest requirements of NEMA Standards Publication No. TC -14 “Reinforced Thermosetting Resin Conduit (RTRC) and Fittings ” and UL 2515 “Standard for Supplemental Requirements for Extra Heavy Wall Reinforced Thermosetting Resin Conduit (RTRC) and Fittings ”. The conduit design shall be rated for above ground installations such as on a bridge structure. The outer conduit, joints, and any spare used internally, shall be all -dielectric. The conduit shall be ultra -violet (UV) stable (sunlight resistant) per UL 2515. The joint assembly shall be tested in accordance with ASTM D2105 “ Standard Test Method for Longitudinal Tensile Properties of Fiberglass (Glass- Fiber- Reinforced Thermosetting -Resin) Pipe and Tube”. There shall be no water leakage through the jo int when tested in accordance to UL Standard No. UL 2515 and CSA Standard C22.2 No. 2515, “Aboveground Reinforced Thermosetting Resin Conduit (RTRC) and Fittings ”.
893.10 Conduit, Conductor, Locate Tone Wire, Messenger, and Warning Tape.
Conduit joints shall consist of an integral bell and spigot. The spigot end shall have a b uttress type, male thread for easy installation. The belled end shall contain the mating female threads. The conduit joint shall be made in such a manner as to form a watertight seal. The couplings shall be manufactured from a high impact thermoplastic m aterial and shall be supplied with lead -ins to facilitate assembly. The couplings shall be designed and factory certified to handle expected expansion and contractions on a bridge application. Appropriate termination kits shall be provided by the conduit m anufacturer for terminating the conduit in manholes and junction boxes.
d.Pull Tape and Pulling Grip . Pull Tape shall be manufactured of aramid yarn and rated at 2500 lbs minimum for the purpose of attaching to, and the pulling of fiber optic and electr ical cables into a conduit system. Pull Tape shall have low elasticity to minimize surge -induced fluctuation in pull tape tension. Pull Tape shall not damage the conduit or cut the innerduct when under tension. Pull Tape shall be factory or field instal led within conduit. Pulling grips shall be used in accordance with the cable manufacturer’s recommendations and Standard Operating Procedures. Pulling grips shall be factory or field installed along with a breakaway swivel; and shall be designed and rated for pulling fiber optic and electrical cables. Pulling grips shall provide effective coupling of pulling loads to the jacket, aramid yarn, and central member of the fiber optic cable per the cable manufacturer’s requirements. The use of a swivel be tween the pull tape and pulling grip is required to prevent twist to the cable during the pulling operation and to limit exceeding the cable’s maximum pulling tension.
e.Friction Reduction Multiduct Sleeves. Friction reduction multiduct sleeves are requi red for installing new fiber where indicated on the Plans and with cell quantity specified. When size and quantity are not indicated on the Plans, a minimum of 3 -cells shall be provided. Size shall be based on conduit size. Each cell shall contain a Pull Tape, as specified within the Specifications. Friction reduction multiduct sleeves shall be manufactured of flexible polyester and nylon resin polymer textile material rated for the installed environment.
f.Conductor. All conductors shall be Type XHHW -2 stranded copper with 1000 Vac rated cross -linked polyethylene insulation, high heat, and moisture resistance conforming to ANSI/NEMA Standard No. WC 70 and ICEA Standard No. S -95-658, “Power Cables Rated 2000 Volts or Less for the Distribution of Electrical Energy ”. Conductors shall be rated for conduit, direct burial, and sunlight resistance. Conductors shall be suitable for wet or dry conditions at temperatures not to exceed 194°F {90°C}. Conductor size shall be such to exceed the amperage rating of the upstream breaker. Conductors shall be soft drawn annealed copper having a conductivity of at least 98 percent of pure copper. Wires shall be single conductor type for sizes smaller tha n 8 AWG. Wires shall be stranded for sizes 8 AWG and larger. Insulation marking and color coding of conductors shall meet NEC standards.
g.Locate Tone Wire. Locate Tone Wire shall be a 12 AWG, solid copper wire with an orange jacket (a.k.a. trace wire or locate wire) and also meet the CONDUCTOR requirements as specif ied within this Specification. Locate Tone Wire shall be suited for direct burial and shall be continuous.
h.Messenger and Guy Wire. Messenger Wire (a.k.a. span wire) and Guy Wire (a.k.a. guy strand or down guy) for ITS and related applications shall b e steel, seven (7) wire strand, Class A (double galvanized) and conform to the requirements of ASTM Standards Publication No. A 475, “ Standard Specifications for Zinc -Coated Wire Strand ”. The cable shall be extra high -strength grade steel (EHS) with a mi nimum nominal diameter of 1/4 inch {6 mm} and a minimum breaking strength of 3,136 pounds {14.0 kN}. All cable attachment hardware and fittings shall be new and stainless steel or non -corrosive material and shall be provided with tensile strength adequate for the application. Cable attachment hardware and fittings shall include, but not limited to: pole attachment hardware, cable ties and straps, lashing, extension arms, and pole extensions. Fiberglass insulators are to be provided in accordance with app licable NESC, NEC and local Utility standards.
893.12 Intelligent Transportation System (ITS) Cabinet.
Down guy shall have a guy marker (a.k.a. guy guard) with materials as specified in accordance with applicable NESC, NEMA and local Utility standards.
i.Warning Tape. Warning Tape shall consist of an undergro und/buried tape marking the locations of conduits containing fiber optic cables and/or electrical conductors as indicated on the Plans. Warning tape shall be 3 inch {7.6 cm} wide, elastic PVC, tear resistant, corrosion resistant and durable to extreme weat her conditions. The color of the tape shall be orange with “ALDOT FIBER OPTIC CABLE - CALL ALDOT [insert phone number to be provided by the TSMO Engineer]” printed every 3 feet {0.9 meter} in black letters, unless otherwise noted on the Plans. The physica l test methods along with typical properties and values are specified below: TEST METHOD TEST SPECIFICATION TEST VALUE/UNITS Standard Weight ASTM- D2103 20 lbs/100 feet Thickness -overall ASTM -D2103 4 mil 3 in. Tensile Break -MD ASTM -D882 35 lbs/ft 3 in. Tensile Strength -MD ASTM -D882 4 kpsi 3 in. Tensile Break -TD ASTM -D882 38 lbs/ft 3 in. Tensile Strength -TD ASTM -882 5 kpsi Elongation -MD ASTM -882 530% Elongation -TD ASTM- 882 660% Tear Strength ASTM- D2261 1.5 lbs/ft
893.11 Grounding.
All grounding conductors shall be either bare or insulated with green jacket in accordance with the NEC. Ground ing electrodes (rods) installed for ITS equipment installations shall be copper clad rods of minimum size 5/8 inch {16 mm} in diameter and 10 f t {3.0 m} long. All non -current carrying conductive material shall be bonded together and grounded to earth through the grounding electrode. Grounding electrodes shall be bonded by seven (7) strand copper wire or strap of the same cross -sectional area as a 6 AWG {4.25mm} wire. Ground ing electrodes shall conform to the NEC requirements and be approved by the Underwriter’s Laboratory (UL). [See Sub-Article 729.03(k), “Grounding, Lightning Protection, Insulation, and Circuit Continuity” for grounding syst em installation and testing requirements.]
893.12 Intelligent Transportation System (ITS) Cabinet.
a.General. All Intelligent Transportation System (ITS) Cabinets shall be of the same manufacturer per cabinet type, identical in size and shape, and of the same quality throughout the entire project. The ITS Cabinet shall be equipped internally as specified herein, and as required to suit the specific complement of equipment as shown on the Plans. ITS Cabinets shall meet the following general requirements:
1.Material . ITS Cabinet housing shall be Aluminum alloy 5052 -H32 at 0.125 inch thick (minimum) with a natural aluminum finish and continuously welded seams. ITS Cabinet housing shall be UL listed and meet below NEMA environmental rating requirements. ITS Cabinet exteriors shall be free of any sharp edges and spurs. For pole mounted applications, mount -side cabinet walls shall be designed to minimize deflection and cabinet movement. Some cabinet wall reinforcement may be necessary.
2.Cabinet Dimensions. ITS Cabinet dimensions are to be as indicated within each cabinet type and are approximate. A tolerance of - 0% to +15% shall be allowed on each cabinet dimension indicated within their respective cabinet type table.
893.12 Intelligent Transportation System (ITS) Cabinet.
3.Environment . ITS Cabinet shall meet or exceed NEMA Type 3R standard requirements and NEMA TS2 standard requirements for shock and vibration. ITS Cabinet shall withstand ambient operating temperatures from - 40°F to 185°F { -40°C to 85°C}. Louvered vents shall be instal led on doors of the cabinet for ventilation. The bottom of the vents shall be within 3 to 6 inches from the bottom of the door. Vents shall be framed in to allow installation of air filter. The air filter shall be held in place securely against the door by a bottom bracket and a spring loaded upper clamp. No incoming air shall bypass the air filter. The bottom filter bracket shall be formed into a waterproof sump with drain holes to the outside housing. An UL listed thermostatically controlled power vent and dual fans shall be provided. The thermostat shall activate the fans at 110°F {43°C} and de -activate the fans at 90°F {32°C} with an accuracy of ±5°F {±3°C}. Fans shall be rated at 100 cfm. Fans shall also be rated for three (3) year continuous se rvice life and have ball bearings.
4.Cabinet Lighting. ITS Cabinets shall utilize high efficiency Light -Emitting -Diode (LED) lighting fixtures. These light fixtures shall be 120 Vac or have a power supply conversion. Each light fixture shall have a lu men output of 600 to 1200 lumens at 4000°K to 5000°K (with a tolerance of ±300°K). The initial light fixture output level is to be set at 1,000 lumens minimum per door, unless otherwise directed by the Engineer. The light fixture shall be covered by a pr otective shield that prevents glare. These LED light fixtures shall be operated by a UL listed Class 2 power supply. These LED lighting fixtures shall be provided and mounted inside the top portion of the ITS Cabinet for each door opening and under the cabinet drawer(s) so that it remains stationary when drawer is extended. LED light fixtures shall be mounted such that they can be easily removed and replaced without interference from other devices mounted in the ITS Cabinet. All light fixtures shall b e activated upon any door opening. Door switches along with necessary connections to the respective light fixture shall be provided. Door switches shall be made of durable materials and mounted in a manner that will withstand repeated use.
5.Doors. Doors shall be weather -resistant and dust -tight with a closed cell gasket. Mating surface of the doors shall be covered with a silicone lubricant to prevent sticking. Top gasket shall be the width of the door, side gaskets shall begin below top gasket and bottom gasket shall be within the side gaskets. Doors shall include a retaining ring installed on the inside of the gasket for protection. Three -point latching system is required with each point controlled by the door handle for each door. The three - point latch points shall be at center, top, and bottom of each door. No plastic parts other than nylon rollers for top/bottom door secure is allowed. Door hinges, bolts, three -point latch system and pins shall be stainless steel or equivalent corrosion resistant material. When doors are open, a manufactured doorstop shall be included to hold the door open at a minimum of two positions, 90 degrees and 120 degrees. ITS Cabinet doors shall be equipped with a brass or stainless -steel lock. Lock shall be ALDOT’s standard Corbin #3 lock and key set. The Contractor shall coordinate with the Engineer to obtain cylinder code and key code. Two keys shall be provided for each lock. Locks will be permanently lubricated and be covered with a weatherproof tab. Door handle shall turn away from the lock to open the door. The keys shall be removable in the locked position only. A plastic documentation pouch to store the ITS Cabinet and equipment documentation shall be provided. Pouch shall be side- opening, reseal -able, opaque, and of a heavy -duty plastic material. The pouch shall have metal or hard plastic reinforced holes for hanging from hooks included on the cabinet door. The pouch shall be of the size and strength to easily hold all wiring diagrams, equipmen t documentation and the maintenance logbook.
6.Rack Assembly. ITS Cabinets shall be equipped with a 19 -inch industrial rack frame assembly with a four -post design for mounting components in accordance with EIA/ECA -310 standard. Rack shall span the entir e height of the ITS Cabinet. Depth of rack shall be adjustable for differing field conditions. Rack mounting panel(s) and mounting tray(s) shall be provided for installing the surface mount and standalone equipment, respectively. All cage nuts and screw s required for mounting equipment to the rack shall also be provided. Additional cage nuts and screws, for mounting future equipment, shall be provided and placed in a plastic sealable bag attached to the rack.
893.12 Inte lligent Transportation System (ITS) Cabinet.
7.Shelves . All ITS Cabinets shall have a d rawer that opens or is capable of sliding in and out for placing a notebook or laptop computer. Adjustable shelves shall be vented and provided in quantities as indicated in Dimension and General Requirements Table for each cabinet type. A hinged, alumin um shelf and integrated storage compartment shall be installed inside the front door for two -door cabinets. The shelf shall have a smooth, non- slip surface sufficient for use for a writing platform and laptop workspace. The shelf shall have rounded or in sulated edges that do not have the potential to physically harm the user. The shelf and storage compartment shall have the ability to lock into place when folded for storage; locking, unlocking, and use of the components shall not require tools. Storage component shall be at least 1.5 inch {38 mm} deep and capable of holding letter -size (8.5 inch x 11 inch) documents/manuals, at minimum.
8.Electrical . The following ITS Cabinet electrical requirements are minimum requirements and shall be adapted to field conditions as shown on the Plans. Each ITS device type (e.g. camera, VDS, DMS, etc.) shall have a separate dedicated circuit (i.e. branch circuit with circuit breaker). Stranded copper wire shall be used with exception of earth ground conductor which s hall be solid wire. Wiring shall be UL listed and 1000 Volts rated per NEC. Wiring shall be neatly arranged, labeled/tagged, and managed using wire management system and ties; wire to be appropriate lengths before assembly (i.e., no double backs to take up slack). Color of wires shall be in accordance with the NEC. Wiring within ITS Cabinet shall be continuous (i.e., no splices) landing on busbars, terminal strips, device clamp, or lug. Minimu m 12 AWG (American Wire Gage) wire for all conductors on 120 Vac circuits unless otherwise shown on the Plans. Terminal blocks shall be provided for incoming power with a rating greater than wire being terminated on the block and shielded for contact protection. Grounding bus shall be provided for both earth grou nd and AC neutral/common (each isolated from the other). Electrical terminations shall be shielded (i.e., touch safe) to protect from accidental shock. The ITS Cabinet shall contain minimum two (2) 15-amp rated convenience receptacles (NEMA Type 5 -15R) w ith GFCI protection and be on an isolated circuit protected by a 20 -amp breaker. These GFCI protected receptacles are to be designated for “Technician Service Use Only”. Mounted power distribution unit(s) or power strip outlet(s) shall be provided near th e top of each ITS Cabinet for providing power to the ITS equipment. The power strip shall incorporate eight (8) NEMA Type 5 -15R receptacles and be on an isolated circuit protected by a 20 -amp breaker unless otherwise shown on the Plans. The power strip r eceptacle shall face the back of the cabinet and shall be recessed within the cabinet rack to provide a minimum spacing of 3 inches {76 mm} between the outlet’s face and the cabinet door when the door is closed. Only circuit breakers that are Underwriter s Laboratories (UL) approved and plainly marked with trip and frame sizes and ampere rating shall be used. All circuit breakers shall be quick -make, quick - break on either automatic or manual operations. Contacts shall be silver alloy and enclosed in an arc-quenching chamber. Circuit breakers shall be standard panel -mount or channel -mount. Overload tripping shall not be influenced by an ambient air temperature range from - 0.5°F to 122°F { -18°C to 50°C}. Minimum interrupting capacity shall be 5,000 amper es RMS. Busbars shall be fabricated from a copper alloy material compatible with copper wire. Busbars shall be used for termination of ground or neutral conductors. The earth ground busbar shall have at least two positions capable of terminating a 6 AWG conductor. With multiple busbars, each busbar shall be interconnected via a 10 AWG conductor. Terminal blocks and strips with voltage and current ratings greater than the voltage and current ratings of the wires that are terminated on the blocks or strips shall be used. The terminal block for the 120 Vac cabinet service entrance (SE) shall be a tubular clamp compression device that is fully insulated (Marathon 1103P or approved equivalent). Terminal blocks for 120 Vac power wiring (TB1, TB2) shall be on dual -screen barrier type terminal blocks with 9/16 in {14.3 mm} spacing using nickel - plated brass 8 -32 Philips slot screw and fork terminal lugs (Cinch 142 or approved equivalent). TB1 and TB2 shall have at least eight (8) terminal positions. Compr ession -type and tubular clamp terminal blocks shall be used only for service entrance block. Spade lug terminals shall not be used for any terminal block. A 30-amp generator male receptacle, in a NEMA Type 3R rated enclosure shall be provided external to cabinet for quick generator connection.
893.12 Intelligent Transportation System (ITS) Cabinet.
9.Surge Protection. Surge -Protective Device(s) are required in accordance with Item 729.03(q)7, “ Installation of Surge -Protective Devices” and shall be as specified in Sub -Article 893.17(i), “ Surge Protection ”.
10.Foundation (Mounting Pad). Where the ITS Cabinet is pad mounted, the mounting pad foundation shall be concrete and as shown on the Plans. The concrete mix used for mounting pads shall comply with the requirements of Section 501 for Class A concrete and Section 620, unless otherwise shown on the Plans. Mounting pad shall be formed separately from any ITS concrete pole or structure foundations; and, the concrete shall include wire mesh. Reinforcing steel shall meet the requirements of Section 502 and as shown on the Plans.
11.Concrete Pad (Service Platform). Where the ITS Cabinet is pole or structure mounted, the service platform pad shall be concrete and as shown on the Plans. The concrete mix used for this service platform shall comply with the requirements of Section 501 for Class A concrete and Section 620 , unless otherwise shown on the Plans. Concrete pad shall be formed separately from any ITS concrete pole or structure foundations; and, the concrete shall include wire mesh. Reinforcing steel shall meet the requirements of Section 502 and as shown on the Plans.
12.Uninterruptible Power Supply. The Uninterruptible Power Supply (UPS) unit for the ITS Cabinet shall be rack mounted and as shown on the Plans. The UPS unit shall also meet the minimum r equirements of Sub-Article 893.17(j) “Uninterruptible Power Supply (UPS)” . The UPS unit shall include all battery packs, power cables, mounting brackets and all appurtenances necessary for a complete operational backup power system; adequately sized to support the ITS cabinet equipment and operations. The UPS unit shall typically support the ITS cabinet equipment as follows (unless otherwise shown on the Plans): Managed Ethernet Switch and ITS Cabinet equipment (e.g. cabinet lighting, fans, ITS equipment r eceptacles, and convenience receptacle).
b.Type 337. ITS Cabinet Type 337 shall also meet the following requirements: DESCRIPTION SPECIFICATION Height 35.25 in. Width 20.50 in. Depth 18.125 in. Mounting POLE/PEDESTAL Number of Doors 2 Door Location(s) FRONT/REAR Number of Adjustable Shelves 1 Rack Assembly Yes Louvered Vent Size (length x vent depth) 3.00 in. x 0.25 in. (24 each front door only) Air Filter Size 12 in. x 16 in. GFCI Receptacles 1-Duplex Equipment Receptacles 1-Duplex Breakers DIN rail mounted breakers. One 30 -amp main breaker; one 20 -amp breaker for cabinet lights, fans, and convenience receptacle; one 20-amp breaker for device receptacle; and additional 20-amp breakers required for any and each additional convenience receptacle as required on the Plans
893.12 Intelligent Transportation System (ITS) Cabinet.
c.Type 332S. ITS Cabinet Type 332S shall also meet the following requirements: DESCRIPTION SPECIFICATION Height 66.75 in. Width 24.25 in. Depth 30.25 in. Mounting BASE Number of Doors 2 Door Location(s) FRONT/REAR Number of Adjustable Shelves 2 Rack Assembly Yes Louvered Vent Size (length x vent depth) 3.00 in. x 0.25 in. (24 each per door) Air Filter Size 12 in. x 16 in. GFCI Receptacles One Duplex Equipment Receptacles One Duplex Breakers DIN rail mounted breakers. One 30 -amp main breaker; one 20 -amp breaker for cabinet lights, fans, and convenience receptacle; one 20-amp breaker for device receptacle; and additional 20-amp breakers required for any and each additional convenience receptacle as required on the Plans
d.Type 332D (Quad). ITS Cabinet Type 332D (QUAD) shall also meet the following requirements: DESCRIPTION SPECIFICATION Height 66.00 in. Width 44.25 in. Depth 28.50 in. Mounting BASE Number of Doors 4 Door Location(s) (2 each) FRONT, (2 each) REAR Number of Adjustable Shelves 4 Rack Assembly Yes, Qty. (2) Louvered Vent Size (length x vent depth) 3.00 in. x 0.25 in. (24 each per door) Air Filter Size 12 in. x 16in. GFCI Receptacles One Quadruplex per side Equipment Receptacles One Quadruplex per side Breakers Panelboard shall be 100 -amp rated with 30 -amp main breaker and 6 bolt -on type breakers unless specified otherwise on the Plans; one 20 -amp breaker for cabinet lights, fans, and co nvenience receptacle; one 20-amp breaker for device receptacle; and additional 20-amp breakers required for any and each additional convenience receptacle as required on the Plans
e.Type 336S. ITS Cabinet Type 336S shall also meet the following requirements:
893.12 Intelligent Transportation System (ITS) Cabinet.
DESCRIPTION SPECIFICATION Height 46.25 in. Width 24.25 in. Depth 22.25 in. Mounting BASE/POLE Number of Doors 2 Door Location(s) FRONT/REAR Number of Adjustable Shelves 2 Rack Assembly Yes Louvered Vent Size (length x vent depth) 3.00 in. x 0.25 in. (12 each per door) Air Filter Size 12 in. x 16 in. GFCI Receptacles One Duplex Equipment Receptacles One Duplex Breakers DIN rail mounted breakers. One 30 -amp main breaker; one 20 -amp breaker for cabinet lights, fans, and convenience receptacle; one 20-amp breaker for device receptacle; and additional 20-amp breakers required for any and each additional convenience receptacle as required on the Plans
f.Type 334. ITS Cabinet Type 334 shall also meet the following requirements: DESCRIPTION SPECIFICATION Height 67 in. Width 24.3 in. Depth 30 in. Mounting BASE/POLE Number of Doors 2 Door Location(s) FRONT/REAR Number of Adjustable Shelves 2 (minimum) Rack Assembly Yes Louvered Vent Size (length x vent depth) 3.00 in. x 0.25 in. (12 each per door) Air Filter Size 12 in. x 16 in. Technician Receptacles One Duplex (non -GFCI) Equipment Receptacles One Duplex and One Quadruplex Breakers DIN rail mounted breakers. One 30 -amp main breaker; one 20 -amp breaker for cabinet lighting, fans, and (non- GFCI) convenience receptacle; one 15 -amp breaker for device receptacle, powered from UPS if available; and additional 15 -amp br eakers required for any and each additional convenience receptacle as required on the Plans.
893.12 Intelligent Transportation System (ITS) Cabinet.
Relays When an Uninterruptible Power Supply (UPS) is present, both equipment receptacles shall be powered through the UPS. The Duplex receptacle shall be powered through a relay that is switched on/off by dry contacts on the UPS. Cabinet UPS Status LEDs When a UPS is present, cabinet LEDs shall be provided which indicate the UPS status. These cabinet LEDs shall be installed on the door with the best visib ility from the road unless otherwise specified. These cabinet LEDs shall be connected through relays such that a green LED is ON under normal circumstances and an amber LED is ON when the relay is activated via dry contact from the UPS. Fiber Distributio n Unit Secondary Fiber Distribution Unit (SFDU) shall be a slidable 1U rack -mounted unit for terminating the optical fiber drop cable. SFDU shall be a 2 -connector panel design. Cable management shall be accessible from the top of the SFDU when the drawer is in an open position. There shall be sufficient cable slack to allow the drawer to be fully functional. This SFDU shall also meet all other requirements as specified in Article 893.03 and as shown on the Plans.
g.Hub (Quad). ITS Cabinet, Hub (Quad) shall also meet the following requirements: DESCRIPTION SPECIFICATION Height 72 in. Width 60 in. Depth 48 in. Mounting BASE Number of Doors 4 Door Location(s) (2 each) FRONT, (2 each) REAR Number of Adjustable Shelves 4 (minimum) Rack Assembly Yes, Qty. (4) Louvered Vent Size (length x vent depth) 3.00 in. x 0.25 in. (24 each per door) Air Filter Size 12 in. x 16 in. Technician Receptacles One Duplex (non -GFCI) per side Equipment Receptacles One Duplex and One Quadruplex per side Breakers DIN rail mounted breakers. One 30 -amp main breaker; one 20 -amp breaker for cabinet lighting, fans, and (non- GFCI) convenience receptacle; one 15 -amp breaker for device receptacle, powered from UPS if available; and additional 15 -amp breakers required for any and each additional convenience receptacle as required on the Plans.
893.13 Electrical Power Service and Transformer.
Relays When an Uninterruptible Power Supply (UPS) is present, both equipment receptacles shall be powered through the UPS. The Duplex receptacle shall be powered throu gh a relay that is switched on/off by dry contacts on the UPS. Cabinet UPS Status LEDs When a UPS is present, cabinet LEDs shall be provided which indicate the UPS status. These cabinet LEDs shall be installed on the door with the best visibility from the road unless otherwise specified. These cabinet LEDs shall be connected through relays such that a green LED is ON under normal circumstances and an amber LED is ON when the relay is activated via dry contact from the UPS. Fiber Distri bution Unit Primary Fiber Distribution Unit (SFDU) shall be used for terminating the optical fiber drop cable. This PFDU shall also meet all other requirements as specified in Article 893.03 and as shown on the Plans.
893.13 Electrical Power Service and Transformer.
Electrical Power Service assembly shall consist of equipment to provide a pole attached raceway and disconnect switch for use with power cable routed from the service entrance to the ITS Cabinet. The electrical power service assembly shal l include (at a minimum): service pole, weatherhead, conduit and fittings, electrical cable/conductors (from utility power source to service pole), riser, disconnect switch(es) with enclosure, grounding, and attachment clamps. Lateral/horizontal conducto rs, after the service disconnect/meter base and to the ITS cabinets/equipment, are not part of the Electrical Power Service assembly. Electrical power service shall be in accordance with these Specifications, Plans, NEC requirements, and local utility code s. Electrical power shall be provided by a Utility Company transformer that does not provide power to any other equipment or clients unless otherwise noted on Plans or approved by the Engineer. Electrical service power runs will typically be a 120/240 V ac system unless otherwise supplied by the Utility Company and/or shown on the Plans. For 480 volt systems or greater, a meter disconnect switch shall be installed on the supply side of the meter and meter base in accordance with NEC Article 230 (especial ly Sub -Article 230.82) and as directed by the Utility Company. Depending upon the electrical service provided, step -up and step -down transformers may be required (e.g. for DMS or long -runs) as shown on the Plans. Typically, these transformers shall be provided by the contractor and installed at the service pole location with another corresponding transformer at the ITS Cabinet/equipment site as indicated on the Plans. Materials shall be tested and approved by a nationally recognized testing laboratory a nd shall meet the following requirements:
a.Service Pole (Wood Pole). Service Pole shall be southern yellow pine treated in accordance with the latest American Wood- Preserver’s Association (AWPA) standards and shall conform with requirements given in Section 833 . Unless otherwise shown on the Plans, service pole used for service lateral drop shall be a 35 foot {10.7 m} Class 3 wood pole and shall conform to the requirements of ANSI Standards Publication No. O5.1, “American National Standard for Wood Utili ty Products – Wood Poles: Specifications and Dimensions” as published by American Wood Protection Association (AWPA), Birmingham, Alabama. The poles shall not have more than 180 degrees of twist in grain over the full length and the sweep shall be no more than 4 inches {100 mm}.
b.Electrical Cable and Conductors. Phase or current carrying conductors shall be of the type RHH, RHW, USE, or XHHW. Size shall be of the size shown on the Plans and in accordance with the NEC. Conductors shall be stranded annea led copper with not less than 98 percent conductivity and shall be insulated for 1000 Volts or more with rubber insulation and a neoprene jacket, or with cross -linked polyethylene insulation.
893.14 Intelligent Transportation System (ITS) Pole.
Electrical Power Service Cable and Conductors shall also meet th e requirements of Sub -Article 893.10(f), “Conductor” .
c.Conduit. Conduit shall conform to the requirements specified in these Specifications and as shown on the Plans. Only UL Listed conduit shall be used for electrical power service installations.
d.Weatherhead. Weatherhead shall be made of a copper -free aluminum alloy or galvanized ferrous material.
e.Attachment Hardware. Attachment hardware shall meet the requirements of this Section and as shown on the details in the Special and Standard Highway Drawings, unless otherwise shown on the Plans.
f.Guy Wire. Guy Wire (a.k.a. down guy) shall meet the requirements of this Section and as shown on the details in the Special and Standard Highway Drawings, unless otherwise shown on the Plans.
g.Meter Bas e and Meter Disconnect. When a meter base is required, the meter base shall be a meter base approved by the local Utility Company. When a meter disconnect is required, the meter disconnect switch shall be a meter disconnect meeting below service disconnec t requirements (without key option unless otherwise specified by the Utility Company), NEMA rated enclosure for intended outdoor use, rated for the service supply voltage, and approved by the local Utility Company.
h.Service Disconnect.
1.Enclosure Cabinet: The Enclosure Cabinet shall conform to NEMA standards, made of galvanized steel, aluminum, stainless steel or other material approved by the Engineer. The enclosure shall have a hinged door with a padlock. Padlock No. 3210 keyed for a No. 3 key shall be provided. One key for the enclosure cabinet shall be hung within the corresponding ITS Cabinet.
2.Circuit Breaker : A manually re -settable circuit breaker shall be installed, which has a current rating of the circuit to which electrica l power is provided.
3.Transient Protective Device: A surge lightning arrestor rated for a maximum permissible line to ground voltage of 175 Vac shall be installed; and meeting the requirements of NEMA standards for surge arrestors and also as specified in Sub-Article 893.17(i), “Surge Protection ”.
i.Grounding. Grounding and grounding electrodes shall be as specified in this Specification unless otherwise shown on the Plans.
j.Transformer (Step -Up/Step -Down). If required, Step -Up/Step -Down Transformer(s) shall be provided for each Dynamic Message Sign (DMS) installation site where power is not available in close proximity to the DMS equipment and voltage drops will require a higher distribution voltage than the Utility Company supplied power (typically 120/240 volt service). If required, a step -down tran sformer may also be provided for each ITS Cabinet installation site as indicated on the Plans. The step -up/step -down transformer shall be a dry type transformer as recommended by the local Utility Company and approved by the Engineer. The transformer KV A size and primary/ secondary voltages shall be as indicated on the Plans and approved by the Engineer. The transformer shall be mounted in a NEMA 3R enclosure and have all the appurtenances necessary for a complete electrical power service installation a nd to accommodate the required ITS equipment and ITS Cabinet . Disconnecting means (disconnect switch) shall be required for all transformers in accordance with NEC
Article 450 — 14 and shall be located in close proximity to each transformer as allowed by NE C.
893.14 Intelligent Transportation System (ITS) Pole.
a.General. Intelligent Transportation System (ITS) Poles shall primarily be a concrete pole for ITS applications (e.g. cameras with or without other ITS devices). Metal poles with either auger bas e or concrete foundations are typically used for vehicle detection equipment (i.e. radar or magnetometers) only. ITS
893.15 Hub Building.
Pole shall be in accordance with the Plans and these Specifications. ITS Poles shall also conform to the requirements of Section 718 and Section 891 . Unless otherwise shown on the Plans, the ITS Pole shall have the following minimum accessories: • a 4 inch x 8 inch {10 cm x 20 cm} conduit entrance opening, centered 18 inches {46 cm} below grade; and, • a 4 inch x 8 inch {10 cm x 20 cm} reinfor ced hand hole frame with cover, located 24 inches {61 cm} above grade and centered on same side as the below grade conduit entrance. In addition to the requirements of Section 718 , deflection shall not exceed 1 inch {25 mm} in 30 mph {45 km/h} wind for pol es 70 ft. {21.3 m} or less.
b.Concrete Foundations. Concrete Foundations for metal ITS Poles shall be in accordance with the Plans and these Specifications. Concrete Foundations shall also conform to the requirements of Section 718 and Section 891.
c.Auger Base Foundations. Auger Base Foundations (screw -in helix type) shall be for vehicle detection installations only (i.e. radar and magnetometer) as shown on the Plans and in accordance with these Specifications. Auger Base Foundations shall also conform to the requirements of Section 718 and Section 891 . Materials used for auger base foundations must meet the requirements of ICC Evaluation Service (ICC-ES) AC358, “Acceptance Criteria for Helical Foundation Systems and Devices” and Earth Contact Product s (ECP) “ Utility Industry Anchor Design and Maintenance Manual”, Second Edition (2013). The design of the auger base foundations (screw -in helix type) must be done by a licensed design professional specialized in the engineering and design of auger base fo undations and helical piles. The designer shall be a licensed Professional Engineer in the State of Alabama and must have designed at least five projects utilizing helical piles. Supporting documentation for license and minimum design experience shall be provided upon request of the Engineer. Design calculations shall be in accordance with the requirements of Section 718. The selected auger base size shall be a standard manufacturer size based upon the Professional Engineer’s pole and foundation calculations at each ITS pole location. Pre-drilled bolt patterns for the auger base foundation base plate and corresponding metal pole base plate shall match. No drilling or modifications to the base plates will be allowed in the field. All welds shall be made in accordance with the American Welding Society Standard ANSI/AWS D1.1, “Structural Welding Code - Steel”, latest edition. Welders shall be certified in accordance with the ANSI/AWS Code. The completed foundation shall be hot dipped ga lvanized for underground use.
893.15 Hub Building.
a.General. Hub Building shall consist of a reinforced concrete or concrete composite building with concrete foundation, generator, automatic transfer switch and an uninterruptible power supply. This Hub Building is to be manufactured for the explicit use of housing the electronic communication equipment, power supplies, fiber optic equipment and cabling, measuring devices, and other related components necessary for the proper operation of an ITS deployment.
b.Hub Building and Equipment. Hub Building shall be reinforced concrete or concrete composite precast design in a size as shown on the Plans. Hub building shall be produced in its entirety at the manufacturer’s facility and delivered and set -up complete at the Engineer’s designated location as shown on the Plans. Each building shall have minimum 6.5 inch {165 mm} thick walls and minimum 4 inch {102 mm} thick ceiling and floor. The wall thickness should consist of, at a minimum, 4 inch {102 mm} concrete plus insulation and paneling for a total thickness of 6.5 inches {165 mm}. Hub Building shall be capable of withstanding minimum loads in accordance with local wind loads and environmental conditions where building is to be installed. Design must also consider stresses induced during handling, shipping and installation in order to avoid product cracking or other handling damage. Hub building shall maintain an interior building height of 9 ft. 6 in. {2.9 m} minimum from finished floor to finished ceiling. Hub Building’s exterior shall have a bullet -resistant surface in accordance with UL 752 “ Standard for Bullet -Resisting Equipment ”. Hub building’s exterior shall also be a concrete aggregate finish where color is earth tone to blend with it s surroundings, unless otherwise shown on the Plans. Alternative exterior finishes or colors must have prior Engineer approval before hub building is manufactured.
893.15 Hub Building.
Hub Building’s interior floor covering shall be an industrial -grade vinyl flooring fastened to the building’s floor with waterproof glue. Hub Building shall be supplied with vapor shield in walls and ceiling to prevent moisture penetration. Hub building shall also have an air gap between the building floor and the slab, or alternatively, cons truct the slab with a vapor barrier as recommended by the hub building manufacturer to prevent moisture penetration. Hub Building shall be insulated as follows: ceiling/roof with a minimum Type R -21 insulation factor; walls with a minimum Type R -14 insul ation factor; and floor with a minimum Type R -11 insulation factor. Roof is to be constructed with a 1/8 inch per foot minimum pitch for drainage. Hub Building shall be furnished complete with the following installed equipment, at a minimum:
1.Electric al and Rack Equipment:
a.200- Amp load center;
b.(11 each) 20- amp 120 volt duplex receptacle [divided into a minimum of 4 circuit groups];
c.copper grounding electrode system;
d.(55 feet) 2 AWG copper ground wire Halo ground, green insulation;
e.(24 each) Clic Strap or equivalent for 2 AWG ground Halo support or equivalent;
f.(6 each) compression fitting for 2 AWG by two wire;
g.(30 feet) 6 AWG copper ground wire, green insulation;
h.(9 each) compression fitting for 6 AWG by two wire;
i.(25 each) two hole crimp fitting for 6 AWG wire;
j.(11 each) one hole ring terminal for 6 AWG wire;
k.two hole copper lug for 2 AWG wire;
l.(26 each) ceramic insulators for 2 AWG wire;
m.12 inch by 12 inch NEMA enclosure;
n.50 point reliable terminal s trip;
o.65.5 feet of 61 inch cable rack central steel painted;
p.(2) pieces 2 inch by 3 feet mounting channel;
q.(16 each) cable rack wall mounting bracket;
r.(4 each) plastics end caps;
2.Surge Protection : MOV type with peak surge rating of 50,000 amps (8x20 uS) with a response time of <5 nanoseconds with a maximum clamp voltage of 420 volts at 1 mA and 700 amps at 700 volts;
3.Door and Entrance :
a.approximate 3 ft by 7 ft {0.91 m by 2.1 m} by 1- 3/4 in { 45 mm} thick armor shield bullet resistant door with standard door drip cap;
b.door is to be a minimum of 18 gauge galvanized steel with stainless steel ball bearing hinges;
c.door to be primed, painted brown and cast into the wall panel;
d.56 inch wid e by 24 inch deep {142 cm wide by 61 cm deep} door awning;
e.best Mortise lockset with deadbolt;
f.hydraulic door closure with thumb turn;
g.weather -stripping;
h.magnetic door contact;
i.concrete or concrete composite steps with hand rail installed so the distance from the grade to the hub building floor does not exceed 8 inches {20 cm};
4.Lighting:
a.Exterior: outdoor security LED floodlight with adjustable dual -heads (minimum), switched photocell, motion sensor (minimum 180° up to 50 feet, selectable duration), weatherproof NEMA 3R rated, and UL Listed; die -cast aluminum housing with powder coated paint finish; outside/exterior mount by door for security of entry area; and Warm White (3000K), 2000 lumens (minimum) LED lights unless otherwise in dicated on the Plans;
b.Interior: (6 each) 4 feet LED light fixture with two 50- Watt equivalent, 5000 lumens, 5000K color temperature, LED tubes along with diffuser lens for inside hub building unless otherwise indicated on the Plans ;
c.(2 each) 20 -amp 120 volt light switch;
5.Heating/Air -Conditioning:
a.(2 each; one for operation and one for backup) 24,000 BTU 50- amp @ 240 Volt HVAC with 8kW Heat and 30 -amp Dehumidifier;
893.16 Gas Utility Service.
b.high/low temperature thermostat (for dual backup system);
c.HVAC thermostat (for dual backup system);
d.Humidistat (for dual backup system);
6.Fire Protection :
a.(2 each) 120 volt smoke detector with remote contact;
b.fire extinguisher, 110 lbs. AB C dry chemical, wall mounted (rated for electrical equipment);
7.Fence:
a.10 feet high fence chain link encircling the hub with the fence set off from the building by minimum of 10 feet, with 18 in. diameter of razor wire strung around the top of the fence and gate [this item shall be paid separately and as shown on the Plans];
b.with (2 each) 6 feet drive gates [this item shall be paid separately and as shown on the Plans];
c.and a lock with two (2) sets of keys shall be provided at each gate. The locks shall be approved by the Engineer.
d.Fencing materials shall also meet the requirements of Section 871 and as shown on the Plans. [PLEASE NOTE : Quantities and items listed are minimum. Latest codes and building manufacturer may require additional quantities and items not listed above nor shown on the Plans.] Hub Building and equipment racks shall also be furnished with a Halo Grounding Ring System which meets the applicable grounding requirements of ANSI/TIA -607-B “Generic Telecommunications Bonding and Grounding (Earthing) for Customer Premises”.
c.Hub Building Foundation. Hub Building Foundation shall be reinforced concrete as shown on the Plans. The concrete mix used for the foundation shall comply with the requirements of Section 501 for Class A concrete, unless otherwise shown on the Plans. Reinforcing steel shall meet the requirements of Section 502 and as shown on the Plans.
d.Generator. The Generator shall be fully compatible and interoperable with the Automatic Transfer Switch. The Generator’s electrical characteristics (i.e. size, power inputs and load outputs, line conditioning, etc.) shall be as shown on the Plans. The Generator shall include the manufacturer’s recommended concrete pad installed as shown on the Plans. The G enerator shall include the gas utility service and connections in accordance with the gas Utility Company requirements, these Specifications (see Sub -
Article 729 — 03(p) and Article 893.16, “Gas Utility Service” ), and as shown on the Plans.
e.Automatic Tra nsfer Switch. The Automatic Transfer Switch shall be fully compatible and interoperable with the Generator. The Automatic Transfer Switch shall be in accordance with the NEC and Utility Company requirements and as shown on the Plans.
f.Uninterruptible P ower Supply. The Uninterruptible Power Supply (UPS) units for the Hub Building shall be two (2) each, rack mounted (or as indicated on the Plans) , and as shown on the Plans. The UPS units shall also meet the minimum requirements of Sub -Article 893.17(j) “ Uninterruptible Power Supply (UPS)” . The UPS units shall include all battery packs, power cables, mounting brackets and all appurtenances necessary for a complete operational backup power system; adequately sized to support the hub building equipment and o perations. The UPS units shall typically support the hub building equipment as follows (unless otherwise shown on the Plans): each UPS will be plugged directly into one dedicated NEMA L5 -30 two -pole twist -lock plug, while one UPS will feed the power suppl y in the Managed Ethernet Switch (MES) and the other UPS will feed the redundant power supply side of this Managed Ethernet Switch. The remaining hub building equipment will be distributed evenly between these two UPS units, allowing both a circuit and/or UPS failure on one side while still allowing the Hub Building’s Managed Ethernet Switch to continue working.
893.16 Gas Utility Service.
Gas Utility Service shall consist of equipment to provide a natural gas feed to the Hub Building Generator, unless ot herwise indicated on the Plans. The gas utility service components shall include (at a minimum): a gas meter, gas line pressure regulator (if required), piping and fittings, along with any
893.17 Miscellaneous Infrastructure.
appurtenances as required by the local gas Utility Company. All gas utility service components shall meet applicable material requirements of the American Gas Association (AGA), National Fuel Gas Code (NFGC), and the local gas Utility Company. Gas Utility Service shall also meet the requirements of Section 646 and Section 861.
893.17 Miscellaneous Infrastructure.
a.Fusion Splicing. All fiber optic cable splices shall be Fusion Splices. Mechanical splices are prohibited. Maximum core alignment shall be verified prior to splicing and splice estimated loss measured after the fusion process by the use of local injection and detection (LID) devices and/or profile alignment algorithms. Not only shall the fusion splicer automatically align fibers, determine cleave quality and fuse the fibers, but they shall als o provide the operator with reference estimated splice loss measurements. Splice loss attenuation for fusion splicing for single -mode shall be 0.15 dB maximum.
1.Fusion Heat Shrink Sleeves. The Contractor shall use heat -shrink sleeves to protect the fusi on splice of 250 µm coated fibers while offering individual access to each fusion splice. The heat -shrink sleeves shall be compatible with the splice trays (whether existing or provided on this project). The heat -shrink sleeve protector parameters shall meet the following:
a.Dimensions (length) Single -Fiber Sleeve: 2.36 inches {60 mm} lengths;
b.Bare Fiber Length not more than 1.18 inches {30 mm} or 2 inches {51 mm} (based on length of sleeve)
c.Shrink Temperature Single -Fiber Sleeve: 248°F {120°C};
d.Heating Time Single -Fiber Sleeve as recommended by the manufacturers.
2.Fusion Splice Protection. When splicing all fiber optic cables outdoors, the Contractor shall provide and utilize an industry acceptable, lighted, and clean fiber optic splicing t railer/lab or comparable facility. Prior to the Contractor performing any fiber optic work, the Engineer shall approve the fiber optic splicing trailer/lab or comparable facility to be used on this project.
3.Cleave Tool. Cleave tool’s minimum end angl e average shall be < 0.7 degree angle with none of the 150 cleaves sampled exceeding a 1.5 degree angle. If requested by the Engineer, the Contractor shall submit the part number and manufacturer of the cleave tool along with an “end angle” distribution ch art which demonstrates the actual 150 cut end angles.
b.Splice Closure. The following material specifications covers Splice Closure equipment requirements for housing and managing outside plant fusion splices, whether installed in underground or aerial a pplications.
1.General . For outside plant installations, the Contractor shall provide inline or dome- type sealed splice closures that meet the requirements herein for use in the most severe conditions such as moisture, vibration, impact, cable stress and flex temperature extremes. Splice closures shall pass the factory test procedures per accepted industry standards: i.e. Telcordia/Bellsouth GR -771-CORE, ASTM G -26 (UV resistance), ASTM G -21 (fungus resistance), water immersion, freeze/thaw, salt fog, acidified saltwater, chemical immersion, compression, impact/drop, torsion/bending, current surge, bond clamp retention, and cable pullout among others. If requested by the Engineer, the Contractor shall submit copies of these manufacturer’s factory test results. The splice closure housing shall be a thermoplastic body design and suitable for butt, inline and branch splices. The splice closure shall have corrosion resistant aluminum or stainless- steel hardware. Splice closure shall be resistant to solven ts, stress cracking, and creep. The housing materials shall also be resistant to chemicals and other materials to which they might be exposed in normal applications. The installation of the splice closure shall not require specialized tools or equipment, other than those normally carried by installation and maintenance crews. Splice closures shall be totally re -enterable without damage to fiber optics, their jackets and closure seal(s). The splice closure end cap shall be capable of accepting additional c ables without removal of the sheath retention or strength member clamping hardware on previously installed cables
893.17 Miscellaneous Infrastructure.
or disturbing existing splices. The optical fiber splice closure shall provide a clamping mechanism to prevent piston movement of the central member or strength members and to prevent cable sheath slip or pullout. The Contractor shall use splice closures that seal around cables with mechanical processes. Splice closure shall provide adequate strain relief to meet fiber cable manufacturer recom mendations. The splice closure shall have flexible thermoplastic rubber end seals with pre - template cable ports. The splice closure shall have a single clamping mechanism for accessing splice trays and cable management. A single rubber gasket shall be u sed to seal the closure using the single clamping mechanism. The rubber gasket shall be continuous without any holes and shall not require replacement for re -entry. Aerial splice closure shall be of an inline housing design, unless otherwise indicated on the Plans or approved by the Engineer. Aerial splice closure shall be designed to eliminate the need for drip collars and sealing collars.
2.Mounting Hardware . The Contractor shall supply splice closures with manufacturer recommended mounting hardware, whether installed aerially or underground. This mounting hardware shall be non - corrosive metallic material (hot dipped galvanized steel, stainless steel or alumin um) unless otherwise specified by the splice closure manufacturer and approved by the Engineer. The splice closure shall have appropriate hardware and installation procedures to facilitate the bonding and grounding of metal components in the closure and the armored cable sheath. The cable bonding hardware shall be able to accommodate a copper grounding conductor equal to or larger than 6 AWG .
3.Optical Fiber Organizer . Fiber organization shall be handled within the splice closure in such a way to protect and support the fiber optic cable and splices in a secure environment. The organizer shall store fiber splices, splice trays, slack buffer tubes and readily accept these cable configurations (trunk/butt, in -line and branch (up to four drop cables)). T he organizer should be of a stackable splice tray design where tray assembly swings out to allow individual tray access without disassembly of trays above and below. The splice closure organizer shall accept a minimum of four splice trays, one -piece cable strapping system, bonding and grounding hardware as required for the project.
4.Splice Tray . Fiber splices shall be housed in Splice Trays inside the splice closure. The proper splice tray shall be selected based on the type of protection required by t he single -mode fiber splice, quantity of splices, and manufacturer of closure. Splice trays shall provide adequate strain relief tie down points for the buffer tubes (using channel snaps) and fiber as well as provide a snug fit for heat shrink sleeves. S plice trays shall be of stackable design. Splice trays shall provide adequate area for bare fiber slack storage and management. Spliced fiber shall not be subjected to a bend radius smaller than 1.2 inches {30mm}. Buffer tubes shall not be subjected to a bend radius smaller than 1.5 inches {38 mm}. The Contractor shall supply splice trays compatible and of the same manufacturer as the supplied splice closure. When identified on the Plans that new splice trays are required for existing closure, the Contractor shall provide splice trays that shall work within the existing closure using the same methodology, connections, firmness, and supports as existing splice trays.
c.Hangers. Conduits required on structures shall be installed using a conduit hanger f or conduit with spacing and support as detailed on the Plans. The conduit hangers shall utilize anchors, brackets, or clamps to provide attachment to a bridge structure. Mechanical anchors for connection required when attachment to bridge will be in tensi on. Otherwise, epoxy type anchors may be allowed. Drilling into bridge steel structure or concrete girders is not allowed except with written approval by the Engineer. Bridge attachment shall be submitted to committee for review and approval prior to in stallation. Conduit hanger system used shall be recommended by the conduit manufacturer for the application. The conduit hanger shall be capable of supporting a load equal to the weights of the conduits, cables, the weight of the hanger itself, plus 200 po unds.
893.17 Miscellaneous Infrastructure.
Metal brackets, supports, and hardware components of the conduit hangers shall be manufactured galvanized steel.
d.Riser Assembly. The Contractor shall furnish and install Riser Assembly in accordance with the Plans. The Riser Assembly shall consi st of a metallic riser, mounting brackets, straps, supports, any accessories, and required hardware. All attachment hardware shall be made of galvanized steel. For electrical service installations, the riser shall be 2 inch {53 mm} galvanized steel Rigid Metal Conduit (RMC), unless otherwise shown on the Plans. For fiber optic installations, the riser shall be a minimum 2 inch {53 mm} galvanized rigid steel U - Guard with backplate, unless otherwise shown on the Plans.
e.Communication Box (CommBox).
1.Materials and Load Requirements. Communication Box (CommBox) shall have the following properties: high strength, resistance to sunlight, resistant to petrochemicals, unaffected by freeze/thaw cycles, straight sided, flush fit with sidewalk or grass, and b e capable of anchor inserts to allow for mounting Cable Rack. CommBox shall be manufactured of a composite mixture of polymer and concrete; and, be reinforced by a heavy - weave fiberglass. All CommBoxes shall be open bottomed one -piece box construction wi th cover and Cable Rack. No stacking of box sections allowed. CommBox sizes shall be in accordance with the Standard Drawings. CommBox (both box and cover) shall conform to all test provisions of ANSI/Society of Cable Telecommunication Engineers (SCTE) National Standard No. ANSI/SCTE 77 “ Specifications for Underground Enclosure Integrity ” for Application Tier 22. CommBoxes shall meet or exceed the Tier 22 structural load test requirements which has the following defined test values: Vertical Design Load = 22,500 lbs. {100.1 kN} Test Load = 33,750 lbs. {150.1 kN} Lateral Design Load = 800 lbs./sq. ft. {38.3 kPa} Test Load = 1,200 lbs./sq. ft. {57.5 kPa} CommBox shall be reinforced by a heavy -weave fiberglass creating a material compressive strength of no less than 110 psi. Each CommBox shall be designed and tested to temperatures of -50°F { -46°C}.
2.Cable Rack. CommBox shall include manufacturer recommended Cable Rack for storage of cable slack and splice closure(s). The Cable Rack shall be designed so it supports both the cable maintenance coils (while maintaining cable bend radius) and the splice closure such that they are not stressed while hanging on the rack. The Cable Rack shall also hold the cable and splice closure up off the bottom of the CommBox. The Cable Rack shall be non -corrosive metallic material (hot dipped galvanized steel, stainless steel or aluminum) with no sharp edges. The Contractor shall submit, for Engineer approval, the Cable Rack shop drawings/cut -sheets of the materials and installation.
3.CommBox Cover . All CommBoxes shall be supplied with a heavy -duty cover that meets the ANSI/SCTE 77 application Tier rating requirements as d efined in above “ Materials and Load Requirements”. All covers shall be supplied with a minimum of two (2) stainless steel hex head bolts with stainless steel washers used to secure the cover to the CommBox. CommBox covers shall be embossed on the outside of the Cover with “ FIBER OPTICS ” when used for fiber optic installations and “ ELECTRIC ” when used for electrical power service installations. CommBox covers shall have “ J” hook slots (reference ALDOT Index No. 72920, Standard Dwg. No. ITS-729-020, “CommB ox Installation For Fiber Optic Cable And Conductors” ).
4.Grounding . Where required per NEC for conductive optical fiber cables or electrical service conductors, CommBox shall require a ground ing electrode (ground rod) installed within the CommBox and me et the Grounding requirements of this Specification.
5.Concrete Collar . Each CommBox shall be surrounded by a minimum 12 in. wide x 6 in. deep concrete collar and shall include wire mesh.
893.17 Miscellaneous Infrastructure.
The concrete mix used for concrete collar shall comply with the requirements of Section 501 for Class A concrete and Section 620, unless otherwise shown on the Plans. Reinforcing steel shall meet the requirements of Section 502 and as shown on the Plans.
f.Pull Box.
1.Materials . Pull Box shall be manufactured of a minimum of 0.12 5 inch {3 mm} thick aluminum and be supplied with a screw -on cover (hinge optional). Exposed surfaces shall be treated with rust resistant material. Pull Box shall mee t the requirements of NEMA Type 3R. Pull boxes shall have fixed external mounting brackets for structure mounting (4 total, 2 per side on opposite sides). Conduit penetrations shall be watertight through rigid hubs for the size conduit required on the Pl ans.
2.Cable Rack. Pull Box shall include manufacturer recommended Cable Rack for storage of cable slack. The Cable Rack shall be designed so it supports the cable maintenance coils (while maintaining cable bend radius) such that they are not stressed while hanging on the rack. The Cable Rack shall also hold the cable up off the bottom of the Pull Box. The Cable Rack shall be non -corrosive metallic material (hot dipped galvanized steel, stainless steel or aluminum) with no sharp edges. The Contracto r shall submit, for Engineer approval, the Cable Rack shop drawings/cut -sheets of the materials and installation.
3.Grounding . Where required per NEC for conductive optical fiber cables or electrical service conductors, Pull Box shall require a grounding electrode (ground rod) installed and meeting the Grounding requirements of this Specification.
g.Fiber Marker Post. The Marker Post for fiber optic cable shall be of composite material and weigh less than 4 lbs. {1.8 kg}. All Fiber Marker Posts shall be dome designed for a minimum of twenty (20) year service life and shall include the manufacturer’s tubular anchor system. Fiber marker post dimensions and installation shall be in accordance with the Standard Drawings. The fiber marker post shall be w hite, UV resistant and durable to extreme weather conditions. The dome area of the polyethylene post containing graphics shall be black text on orange background and as shown on the Standard Drawings. The graphics shall not fade, peel or chip and last th e lifetime of the fiber marker post. The dome cover graphic system shall be Engineer approved prior to being printed; and, shall be printed on opposite sides of dome cover while maximizing the print space. See corresponding Construction Section for fibe r marker post label “ proof check ” sample and approval requirements.
h.Frequency Locate Marker. An electronic marker for detecting the CommBox shall be included. The electronic marker shall use the Telephone dedicated frequency (101.4 kHz). It shall be a passive device, requiring no batteries, with an RF field detectable with any standard marker locator. Working with a locator, the frequency locate marker shall indicate the marker’s exact position within a five (5) feet diameter area.
i.Surge Protection.
1.Coaxial Video Surge Protection. Each video Surge -Protective Device shall provide inline overvoltage/overcurrent protection for a single coaxial cable. The video surge- protective device shall employ a hybrid technology of gas discharge tubes, silicon avalanche diode and current limiting components. Video surge- protective devices shall have the following features:
a.UL Listed UL 497B
b.Maximum voltage: 8 volts (16 volts peak -to-peak)
c.Frequency range: 0 to 10 MHz
d.10kA nominal discharge (surge) current
e.50/75 ohm (Ω) BNC connection
f.EMI attenuation: < 0.5 dB at 10 Hz
g.Designed for mounting on standard 35mm German Institute for Standardization (DIN) rail.
h.NEMA TS2 temperature rated
893.17 Miscellaneous Infrastructure.
2.Ethernet Surge Protection. Each Ethernet Surge -Protective Device shall provide inline overvoltage/overcurrent protection for an outdoor rated CAT5/5E/6/6A data/control cable. The data surge -protective device shall employ a hybrid technology of gas discharge tubes, silicon avalanche diode and current limiting components. Data surge -protective devices shall have the following features:
a.UL Listed UL 497B
b.Frequency range: 0 to 100 MHz
c.100 A nominal discharge (surge) current
d.< 8V clamping voltage
e.8P8C (a.k.a. type RJ45 “unkey ed”) modular jack connectors – 8 wire
f.Designed for mounting on standard 35mm DIN rail
g.NEMA TS2 temperature rated
3.Power over Ethernet (PoE) Surge Protection. Each Power over Ethernet (PoE) Surge -Protective Device shall provide inline overvoltage/o vercurrent protection for an outdoor rated CAT5/5E/6/6A data/control cable. The data surge -protective device shall employ a hybrid technology of gas discharge tubes, silicon avalanche diode and current limiting components. Data surge- protective devices s hall have the following features:
a.UL Listed UL 497B
b.Frequency range: 0 to 100 MHz
c.2kA nominal discharge (surge) current
d.68 Vdc maximum continuous operating voltage
e.< 0.1db loss for 8P8C (a.k.a. type RJ45 “unkeyed”) modular jack connectors – 8 wire
f.Designed for mounting on standard 35 mm DIN rail
g.NEMA TS2 temperature rated
4.Data Surge Protection ( Serial ). Each Data Surge -Protective Device shall provide inline overvoltage/overcurrent protection for a two-pair (4 -wire + shield) serial data/control cable. The data surge -protective device shall employ a hybrid technology of gas discharge tubes, silicon avalanche diode and current limiting components. Data surge -protective devices shall have the following features:
a.UL Listed UL 497B
b.10kA nominal discharge current
c.< 27V clamping voltage OR < 46V as required by the device being protected
d.5 position cage clamp terminals for 24 AWG to 12 AWG conductor
e.Designed for mounting on standard 35 mm DIN rail
f.NEMA TS2 temperature rated
5.Power Surge Protection . Each Power Surge- Protective Device shall provide inline overvoltage/overcurrent protection for a three conductor 120- volt AC power feed within an ITS Cabinet. The power surge- protective device shall employ a hybrid technology Metal Oxide Varistors (MOV) and thermal sensitive device for disconnecting power from the load after an MOV failure. Power surge -protective devices shall have the following features:
a.UL Listed UL 1449
b.700 voltage protectio n rating
c.≥ 40kA nominal discharge current per phase
d.Maximum load current: ≥ 50kA
e.Visual indicated for every MOV including neutral and ground
f.5 position cage clamp terminals for 24 AWG to 12 AWG conductor
g.Designed for mounting on standard 3 5 mm DIN rail
h.NEMA TS2 temperature rated
6.Electrical Surge Protection. A surge -protective device consisting of directly connected MOV shall be installed at the incoming electrical service lines and shall be located such that the connection leads are of minimum length. Conductor leads shall be cut to length to ensure quick reaction time. The Contractor shall connect the surge protector to the load side of the main disconnect in the controller cabinet. The surge- protective devices shall have the foll owing features:
a.UL Listed UL 1449
893.17 Miscellaneous Infrastructure.
b.20kA I -nominal rating
c.Line -neutral, line -ground, and neutral -ground modes of protection
d.Directly connected MOVs exceeding 32mm in diameter from line -neutral, line -ground, and neutral -ground
e.Surge current ra ting shall equal or exceed 50kA per mode, 100kA per phase
f.Voltage Protection Rating shall not exceed 700V on any mode.
g.Each MOV shall include a thermal safety disconnector(s).
h.Gas Tubes or Spark Gaps shall not be accepted due to high initial clam p overshoot.
i.MOV’s operational status shall be monitored via visual indicator, including neutral -ground.
j.One set of normally open, normally closed form C contacts for remote monitoring.
k.Unit shall be NEMA Type 4 rated for outdoor installation.
7.Field Management Unit Surge Protection. A surge -protective device consisting of directly connected MOV shall be installed at cabinet locations at the incoming electrical service lines. The surge -protective device shall have the following features:
a.UL Listed UL 1449;
b.20kA I -nominal rating;
c.Line -neutral, line -ground, neutral -ground, and line -line modes of protection;
d.Surge current rating shall equal or exceed 50kA per mode, 100kA per phase;
e.Voltage Protection Rating shall not exceed 600V for 208Y/120V or 1,000V for 480Y/277V;
f.Less than 1 ns response time;
g.Individually fused and thermally protected MOVs;
h.MOV shall be 34 mm square minimum;
i.Shall have diagnostic monitoring on every MOV;
j.MOV operational status shall be monitored via visual indicator, including neutral ground; and,
k.Unit shall be enclosed in a NEMA Type 4X enclosure.
j.Uninterruptible Power Supply (UPS). The Uninterruptible Power Supply/battery backup system (UPS system) shall be used for the management of po wer supplies to ITS devices. The UPS shall provide output power with user option to function as single, dual, or line interactive conversion. The UPS unit shall be field hardened. The UPS shall have trickle charge capabilities. The UPS shall provide ba ckup power for a minimum of three days for permanent and ten days for portable highway advisory radios. If providing backup power for other ITS equipment as shown on the Plans, it shall be provided for a minimum of one hour. Batteries used for a power su pply shall be sealed gel type in the quantity and location (separate enclosure from the ITS equipment) as shown on the Plans. The UPS shall be monitored through a Graphical User Interface (GUI) capable of monitoring performance and alarms as well as provi de system management. The UPS shall display battery status, input and output voltage, Amp hours, load, and run time.
893.17 Miscellaneous Infrastructure.
DESCRIPTION SPECIFICATION Input Voltage: AC DC 90 - 150 Vac 48 Vdc Output Voltage: AC DC 120 Vac, true sine wave 12, 24, 48 Vdc Power Regulation ± 4% Response Time < 5 ms Output Power Rated for intended load Connection Type Dry Contacts, Type B receptacle Temperature Operating Range -40°F to 165°F { -40°C to 74°C} Humidity Operating Range 0 - 95% non -condensing Housing Free standing or rack mountable (as shown on the Plans) Communication Ports Ethernet SNMP, RS -232 Audible Alarm Utility power interruption, inverter failure, low battery INDEX A abbreviations, 1 abutment and bulkhead anchors, 340 acceptance acceptance inspection, 34 final acceptance, 35 for maintenance, 35 accidents, reporting, 55 adhesives, 792 advertisement for bids, 11 aggregate bases and subbases, 150 coarse, 702 fine, 707 slope protection, 477 aggregate foundations, 456 air entraining additives, 716 asphalt pavement asphalt binders, emul sions, 710 pay factors, 47 quality assurance, 45 quality control, 42 quality control, quality assurance, 42 referee testing, 47 sampling of lots and sublots, 46 smoothness, 212 test strips, 48 testing lots, 46 assignment of contract, 62 authority of inspectors, 32 of the engineer, 27 award of contract, 19 B backfill at bridge structures, 123 at culvert pipes, 399 cement mortar flowable, 147 foundation, 119 barricade permanent, 605 barricades and signs, 52 base, soil and aggregate cement treatment, 153 classification, 150 lime treatment, 152 maintenance of work, 157 mixing, 151 placing, 155 sampling and testing, 156 shoulder, 156 bidders qualifications, 12 bituminous base, 170 surface treatment, triple layer, 194 surface treatments, 174 bonds, 20 bridge deck overlay, 274 bridges, 353 construction requirements, 354 detour, 142 elastomeric bearings, 363 materials for construction, 354 precast non- prestressed concrete members, 363 prestressed concrete members , 369 reinforced concrete decks, 355 seals for joints, 388 Buy America, 36 C cable guiderail, 502 cancelled work, 84 cement masonry, 721 Portland Cement, 721 changed conditions, 22 claims appeal board, 88 auditing, 91 committee, 88 compensation, 89 documentation, 90 notice of intent, 87 record keeping, 87 cleaning drainage structures, 407 clearing and grubbing, 99 coatings. See paint cofferdam and pumping, 303 cofferdams or sheeting and shoring, 123 collusion, 15 combination bids, 16 compaction density requirements, 164 of embankment, 115 of foundation backfill, 120 of lime stabalized roadbed, 141 of soil and aggregate base layers, 155 computer bidding, 15 concrete acceptance, 298 chemical admixtures, 716 classification, 279 construction joints, 287 curing, 292 curing materials, 730 finishing, 295 forms, 288 handling and placing, 285 materials, 278 minor structure, 494 prequalification requirements for mixture design, 279 sampling and inspection, 282 seal, 304 INDEX weather limitations for placement, 284 concrete pavement cleaning and sealing joints and cracks, 270 construction requirements, 248 grinding pavement surface, 272 materials, 243 pressure grouting, 264 slabjacking, 260 smoothness, 256 conduits electrical conduits under roadways, 694 construction fuel , 576 contaminated soil, 145 contract documents furnished by the Department, 31 contract time assignment of contract time, 73 beginning and end of contract time, 73 days work not permitted, 73 extension of contract time, 73 failure to complete work within contract time, 75 contractor's personnel superintendent, 31 cooperation between contractors, 31 culverts concrete box culverts, 390 corrugated metal, 401 pipe, 396 pipe end treatments, 493 curb concrete curb and gutter, 499 D default of contract, 75 definitions, 1 –11 deline ators, 591 density embankment layers, 165 materials subject to compaction requirements, 164 modified and improved roadbed, 166 non- destructive testing devices, 164 roadbed or lime stabilization, 166 subbase and base layers, 166 disadvantaged business enter prise (DBE), 92 disqualification (from bidding), 12 drainage plane layer, 170 drains grouted rubble, 487 slotted, 402 structures for (inlets, junction boxes), 495 trench, 413 drilled shaft construction casing, 324 concrete placement requirements, 332 construction methods, 324 drilling equipment, 327 encased excavations, 329 materials, 323 slurry, 324 testing, 335 tolerances, 337 drilled shaft excavation exploratory shaft excavation, 328 obstruction removal, 328 slurry, 330 dynamic mes sage sign. See ITS E embankment, 110, 114 encasement pipe for utilities, 535 epoxy adhesive, 793 erosion control excavation, 116 hydraulic erosion control products, 545 rolled erosion control products, 545, 786 temporary erosion control, 554 temporary seed ing, 554 errors plan and specifications errors, 30 excavation benching, 114 borrow, 110, 114 channel, 110 disposal of surplus material, 116 finishing and dressing, 116 for bridges, 122 for structures other than bridges, 119 measurement, 117 muck, 110, 113 roadway, 112 roadway and drainage, 110 rock, 113 unclassified, 110 undercutting, 112 extra work, 81 F fence barbed wire, 514 chain link, 511 construction safety, 574 materials for fence, 793 reset, 515 woven wire, 512 field office, 463 final estimate documentation, 86 final inspection, 76 flowable backfill, 147 flumes bituminous treated glass fiber, 489 soil cement flumes, 488 force account work, 81 fuel. See construction fuel full depth reclamation, 159 INDEX G gas line, 531 pipe, and appurtenances, 788 geometric controls, 575 geosynthetics reinforcement for slopes and soft soil, 143 geotextiles for paving, 474 for permeable asphalt treated base, 468 for separation of soil and aggregate, 476 for underdrain, 469 material requirements, 71 7 graves, 108 guardrail, 505 guardrail materials, 791 relocate, 508 H handrail for bridges and sidewalks, 379 hazard markers, 591 materials for hazard markers, 808 headlight glare screen, 510 herbicide post -emergent, 569 pre-emergent, 566 highway advisory radio. See ITS I Immigration Law, Alabama, 19 impact attenuator permanent, 613 portable, 614 truck mounted, 615 improved roadbed, 110 index asphalt index, 80 construction fuel, 576 inertial profiler asphalt pavement, 212 concrete pavement, 256 inlets for drainage structures, 495 inspection by the engineer, 33 ITS burn- in, 646 cabinet, 638 cameras, 626 description, 616 dynamic message sign, 628 fiber optic cable, 619 highway advisory radio, 632 hub building, 641 license and certifications, 619 network devices, 625 pole, 640 power, 640 removal and relocation , 670 testing, 644 training, 648 vehicle detection, 627 warranty, 648 J joint filler materials, 731 L laboratories asphalt plant, 40 base, soil and structure, 40 concrete p lant, 40 field, 461 landslide corrections, 129 laws ordinances and regulations bidders knowledge of, 18 compliance with, 49 lighting nightime operations, 23 rehabilitation of roadway lighting, 692 roadway, 685 roadway lighting materials, 811 structures for , 608 lime sinks, 134 stabilized roadbed, 139 lines and grades, 32 liquidated damages, 75 load restrictions for hauling, 33 lumber, 352 M machine graded shoulders, 118 mailbox, 23, 109 maintenance of the work, 34 markers land survey, 463 right -of-way, 463 masonry brick and concrete block, 485 mortar, 483 rubble, 483 stone, 719 materials department furnished, 41 found on right -of-way, 41 guarantee, 18 pits and waste areas, 37 requirement for new, 36 special acceptance requirements, 38 unacceptable, 41 median concrete median barrier, 504 concrete median strip, 503 micropiles, 415 microsurfacing, 182 mineral admixtures, 715 INDEX mineral filler, 714 mobilization, 460 MSDSAR , 38 N nightime operations, 23 notice to contractors, 11 O object markers, 591 P paint, 769 partial payments, 84 patents, 49 pavement markers, 589 payments final, 86 to subcontractors, 85 permeable asphalt treated base, 170 pest control, 564 piling cut off lengths, 319 lengths of piles, 317 load testing methods, 315 materials, 308 pile points, 319 piling materials, concrete and steel, 735 splicing piles, 318 piling encasement, 306 pipe relaid, 410 roadway pipe culverts, 396 roadway pipe rehabilitation, 411 side drain , 408 planing (milling) pavement, 192 police officer, 684 polymer additives for asphalt materials, 717 precast concrete products, 731 price adjustments bituminous materials, 80 Q quantities, 11 altered, 84 approximate quantities in contract, 13, 79 asphalt, 79 basis of payment, 80 final, 86 measurement, 77 R reinforcement. See steel reinforcement removal and relocation of structures, 102 removal of miscellaneous facilities, 104 repair of bridges, 380 repair of defective work, 80 retaining wall, 393 soil nail, 423 soldier pile, 445 riprap construction requirements, 479 materials, 719 roadbed lime stabilized, 139 processing, 135 stabilized, 138 rock slopes, 126 S safety barrier, portable concrete, 614 safety markings, 591 sand and gravel for miscellaneous u se, 729 sanitary sewer, 524 scoring pavement surface , 237 scrub seal, 239 application, 242 surface preparation, 241 seeds. See Vegetation Establishment sequence of construction, 23 sewer sanitary, 524 storm, 404 sheet piling, 319 shotcrete, 440 sidewalks a nd driveways, 491 signs portable changeable message, 683 relocation and renovation, 603 sequential arrow and chevron, 681 sheeting type and class type, 597 sign materials, 798 structure renovation and relocation, 606 structures, 605 site conditions, 13 site conditions, differing, 22 slope protection aggregate slope protection, 477 concrete slope protection, 486 slurry seal coat, 180 soil or aggregate surface, 238 special provisions, specifications and plans coordination, 30 Specialty Items Items Specialty, 62 steel bridge coating, 381 steel reinforcement fabrication and installation, 299 reinforcement materials, 736 steel required to be USA product, 36 structural steel, 341, 737 bolting, 748 structures for traffic signals, 608 INDEX Suspension of Work, 72 T tack coat, 188 taxes, 49 thin polymer overlay, 274 timber, 352 topsoil, 537 removal, 112 traffic control devices for construction work zones, 675 maintenance, 23 markings and legends, 587 traffic signals, 655, 820 portable, 697 traffic stripe, 578 materials for traffic stripe, 771 U unbalanced bidding, 16 underdrain pavement underdrain, 469 pipe underdrain, 472 underground storage tanks, 145 underwater embankment, 111 utilities cooperation with, 30 minor utility adjustments, 516 utility encasement pipe, 788 V value engineering, 25 vegetation establishment, 539 acceptance, 541 mulching, 544, 780 seeding in stubble, 541 seeds, 776 sequence, 539 soil preparation, 539 solid sodding, 543 tree wells, 552 vines, shrubs and tree planting, 547 vines, shrubs and trees, 782 vehicle permit, oversize, overweight, 33 W water for general use, 715 water line, 517 water pipe and appurtenances, 789 water wells, 101 waterproofing and dampproofing, 375
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 860–934 of 934.