722Materials for Traffic Signal Installation

721.07.1 2--Acceptance Procedure . Flexible posts for delineators must be one from the

Department's APL. Prior to use, the Contractor shall furnish the Engineer three copies of the manufacturer's certification for each shipment stating that the material furnished is of the same composition as that originally approved by the Department and that the material has not been changed or altered in any way.

721.08 Blank .

721.09 Timber Sign Posts . The posts shall conform to the requirements set forth in

Subsection 712.05.1.3, except that the preservative shall conform to Subsections 718.04.3 or 718.04.4.

721.10 Direct Applied Copy. Direct applied copy to be provided on guide directional

signs, ground mounted or overhead shall be directly applied to the sign face. Direct applied copy shall include letters, numerals, symbols and borders. The designs for capital and lower case shall be as required by the plans. All type of copy other than caps and lower case shall be as required by the plans. All type faces/fonts shall conform to the recommendations contained in standards published by the FHWA. All direct applied copy shall be attached to the sign face by means of pressure sensitive adhesive meeting the requirements of Subsection 721.06.5--Adhesive. Direct applied copy shall consist of retroreflective sheeting of the color shown in the plans meeting the requirements of Subsection 721.06--Reflective Sheeting. All signs shall be delivered to the site of th eir erection in one piece with all bolts, rivets, moldings, extrusions, copy, and other required appurtenances thereto attached, complete and ready to be mounted to the sign support structure. Any required supplemental or temporary supports required for stability during transport shall be firmly attached but easily removed prior to erection. SECTION 722 - MATERIALS FOR TRAFFIC SIGNAL INSTALLATION

722.01 General . Acceptance of all material in this Section is subject to Subsections

106.01 and 106.04.

722.02 Poles . These specifications are for steel, concrete and wood poles for use as signal

equipment supports, and other support structures as required.

722.02.1 Taper. All steel and concrete poles shall have a constant taper from bottom to

top and may be round or polyhedral.

722.02.2 Type Mountings. The type mounting shall be steel, concrete, or wood as

indicated on the plans. Steel or concrete poles shall have either precast butts for direct mounting in the earth or attached base mounts for mounting on concrete foundations or on break-away bases. Wood poles shall be mounted directly in the earth.

722.02.3 Design Strength Requirements. Unless specified otherwise in the plans, poles

shall meet the requirements of the AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals, current edition with all interim supplements. All components of the assemblies shall be designed to the following:  Importance Factor: 1.0; 50 ye ar mean recurrence interval  Basic Wind Speed (3 second gust): As shown for project county in the following table  Minimum Gust Effect Factor: 1.14  Fatigue Category: II  Ice Loading: As shown for project county in the following table  Natural Wind Gust Pressure Loads: Included  Truck Induced Gust Pressure Loads: Not included  Galloping: Not included County No. County Basic Wind Speed (MPH) Ice Loading Required (3 psf) 1 Adams 100 No 2 Alcorn 90 Yes 3 Amite 100 No 4 Attala 90 Yes 5 Benton 90 Yes 6 Bolivar 90 Yes 7 Calhoun 90 Yes 8 Carroll 90 Yes 9 Chickasaw 90 Yes 10 Choctaw 90 Yes 11 Claiborne 90 No 12 Clarke 100 No 13 Clay 90 Yes 14 Coahoma 90 Yes 15 Copiah 90 No 16 Covington 110 No 17 DeSoto 90 Yes 18 Forrest 120 No 19 Franklin 100 No 20 George 130 No 21 Greene 120 No 22 Grenada 90 Yes 23 Hancock 140 No 24 Harrison 140 No 25 Hinds 90 No 26 Holmes 90 Yes 27 Humphreys 90 Yes 28 Issaquena 90 No 29 Itawamba 90 Yes 30 Jackson 140 No 31 Jasper 100 No 32 Jefferson 90 No 33 Jefferson Davis 110 No 34 Jones 110 No 35 Kemper 90 No 36 Lafayette 90 Yes 37 Lamar 120 No 38 Lauderdale 90 No 39 Lawrence 100 No 40 Leake 90 No 41 Lee 90 Yes 42 Leflore 90 Yes 43 Lincoln 100 No 44 Lowndes 90 Yes 45 Madison 90 No 46 Marion 110 No 47 Marshall 90 Yes 48 Monroe 90 Yes 49 Montgomery 90 Yes 50 Neshoba 90 No 51 Newton 90 No 52 Noxubee 90 Yes 53 Oktibbeha 90 Yes 54 Panola 90 Yes 55 Pearl River 130 No 56 Perry 120 No 57 Pike 110 No 58 Pontotoc 90 Yes 59 Prentiss 90 Yes 60 Quitman 90 Yes 61 Rankin 90 No 62 Scott 90 No 63 Sharkey 90 No 64 Simpson 100 No 65 Smith 100 No 66 Stone 130 No 67 Sunflower 90 Yes 68 Tallahatchie 90 Yes 69 Tate 90 Yes 70 Tippah 90 Yes 71 Tishomingo 90 Yes 72 Tunica 90 Yes 73 Union 90 Yes 74 Walthall 110 No 75 Warren 90 No 76 Washington 90 Yes 77 Wayne 110 No 78 Webster 90 Yes 79 Wilkinson 100 No 80 Winston 90 Yes 81 Yalobusha 90 Yes 82 Yazoo 90 No

722.02.3 1--Design Submittal Data. The Contractor shall submit for approval by the

Engineer, the complete design calculations and design data used that verifies the support structure is designed to meet the minimum re quirements of the plan s and specifications. The design submittal data shall also incl ude drawing details th at identify each support structure component and associated ASTM standard. Fabrication specifications and installation specifications shall also be provided. The Contractor shall provide five (5) printed copies of the submittal data to the Engineer. The Contractor may alternately provide electronic submittal data if preapproved by the Engineer.

722.02.3 2--Anchor Bolts. The foundation anchor bolts shall have the strength

requirements as specified in Subsections 722.02.3 and Section 634. Foundation anchor bolts shall be galvanized through hot-dip processing in accordance with ASTM A153 for the full length of the threaded section plus an additional six inches of the foundation anchor bolts beyond the threaded section.

722.02.4 Traffic Signal and Equipment Support Poles. Type V, VI, and VII shall be

welded or seamless 4-inch inner diameter steel pipe conforming to ASTM A53 with 36 ksi minimum yield strength and shall be galvanized in accordance with ASTM A123.

722.02.5 Mast Arms for Traffic Signal and Equipment Poles. Pole and arm shafts

shall be fabricated from coil or one (1) piece of single ply plate steel. Pole and arm shafts that are round in cross section shall conform to ASTM A595 Grade A (55 ksi yield). Pole and arm shafts that are multi-sided tubular sh aped shall conform to ASTM A570 or ASTM A572 Grade 55. Structural steel shapes shall comply with ASTM A572 Grade 55. Pole and arm shafts shall be made without ci rcumferential weld splices and shall have a linear taper of 0.14 inches per foot of shaft height. Circumferential welds will only be allowed joining the shaft to the pole and ar m base. The submerged arc process shall be used to continuously weld pole shafts and arm shafts along their entire length. Anchor base plates must meet the minimum requirements of ASTM A36 or ASTM A709 Grade 36 or ASTM A572 Grade 50. Flange pl ate shall telescope the large end of the arm and be welded by two (2) continuous arc welds, one (1) being on the outside pf the plate, adjacent to the shaft, and the other one (1) on the inside at the end of the tubular cross section. A tapped flange plate supporting the ma st arm shall be welded to the pole near the top and supported side plate tangent to the pole and gusset plates both top and bottom. The tapped flange plate must be sufficient to develop the full capacity of the connecting bolts. Arm and shaft flange plates must be at least as thick as the arm connecting bolts are in diameter. All steel components shall be galvanized in accordance with ASTM A123. All provided hardware shall be galvanized steel or stainless steel and conform to requirements of Subsection 722.11. Approved removable bolt covers and caps shall be provided and attached to the shaft with self-threa ding stainless steel hex head screws.

722.02.6 Concrete Poles.

722.02.6 1--General. Concrete poles shall be spun cast, prestressed and of the sizes

specified on the plans. These poles shall be of the type intended for direct burial, with the hole backfilled with concrete as shown on the plans. Poles shall be precast, machine made in steel forms by the centrifugal process to produce dense concrete members of the dimensions and design shown on the plans, and in accordance with these specifications. The shaft sh all be tapered or circular in cross section with a smooth outer finish.

722.02.6 2--Aggregate. All aggregate shall be graded from 3/8-inch to No. 100 sieve, with

not more than ten percent (10%) passing the No. 100 sieve. Characteristics of aggregates, other than gradation, shall comply with the requirements of Section 703.

722.02.6 3--Cement. Hydraulic cement used in the manufacture of poles shall conform to

the requirements of Section 701.

722.02.6 4--Water-Cement Ratio. Water used shall conform to the requirements of

Subsection 714.01.2. The water-cement ratio shall be in the proportion required to produce concrete with a minimum compressive strength of 3,500 psi, in 24 hours after curing. Test data shall be furnished to the Engineer, when requested.

722.02.6 5--Reinforcement. Prestressed concrete poles shall meet the requirements of

Sections 602, 711 and 804. Poles shall be reinforced with high tensile prestressing steel having an ultimate strength of at least 240,000 psi, prestressed to at least 60 percent and not more than 70 percent of ultimate strength.

722.02.6 6--Method of Manufacture. Poles shall be cast in metal forms true to design,

including integral butts when specified. Concrete shall be mixed not less than five (5) minutes, and shall be placed in one (1) continuous operation. When filled, the mold shall be rotated at high speed to insure a dense concrete by centrifugal force and provide a cable raceway of not less than 1¾ inches in diameter, extending throughout the length of the pole. The finished poles shall have smooth surfaces. Following the casting operation, the concrete shall be cured with low temperature steam.

722.02.6 7--Precast Butt. When specified on plans, an integral butt foundation shall be

cast with the pole in the spinning process. The pole shall be provided with a minimum of 2½-inch x 6-inch handhole with approved cover, located 18 inches above ground line. A minimum of 9-inch x 2½-inch cable entrance shall be provided 18 inches below ground line.

722.02.7 Wood Poles. Each pole provided shall be Southern Yellow Pine that is cut,

stored, seasoned, and manufactured in ac cordance with specifi cation ANSI 05, for Southern Yellow Pine poles having a fiber stress of 8,000 psi. The poles shall be inspected and treated in accordance with the requirements of Section 718. Each pole shall be Class II or Class III with the length of each pole as shown on the plans. The circumference dimensions of each pole shall be as determined by the ANSI classification. Each pole shall be marked at a point approximately twelve (12) feet above the butt-end with manufacturer name and location, wood species treatment type and date of treatment, pole class and length. Pole class and length shall be stamped or tagged on both the top and butt end or each pole.

722.03 Electric Cable . Electric cables shall be high-grade insulated conductors of

premium quality material and workmanship manufactured in accordance with the accepted industry standards, suitable for use in trays, duct s, conduit, aerial installs, and direct burial applications. It shall be accessible to the Engi neer for inspection at all reasonable times. In lieu of such inspection, the Engineer may requi re that three (3) certified copies of factory tests be furnished. The materials used for electrical conductors, in sulation, jacket armoring and covering shall meet the requirements herein an d as indicated on the plans. Material for backfilling cable trenches shall be as shown on the plans. Cable shall be of the following types with number of conductors and conductor size as indicated on the plans. Signal Cable. Signal cable shall be polyethylene insulated, polyethylene jacketed cable, rated at 600 volts meeting the requirements of IMSA Specification No. 20-1, and with integral messenger cable meeting the requirements of IMSA Specification No. 20-3. Power Cable. Power cables shall be three (3)-Conductor cables or as noted in the plans, rated at 600 volts meeting the requirements of IMSA Specification No. 20-1. Engineer may approve alternate cable at their discretion. Luminaire Power Cable. Luminaire power cables shall be two (2) or three (3)-Conductor cables, as indicated on the plans, rated at 600 volts meeting the requirements of IMSA Specification No. 20-1. Engin eer may approve alternate cable at their discretion. Tracer Cable and Warning Tape. Tracer cable shall be Type THWN, annealed copper, insulated with high-heat and moisture resistant PVC, jacketed with abrasion, moisture, gasoline, and oil resistant Nylon, or UL-listed equivalent. The cable shall be AWG #10 with 19 strands and a 20-mil insulation thickness. It shall be suitable for operations at 600 volts as specified in the Na tional Electric Code (NEC). The warning tape shall be a non-detectable commercial warning tape approved by the Engineer. Loop Detector Wire. Loop detector cable shall meet Subsection 640.02.2.1 specifications. Loop Detector Lead-In Cable. Loop detector lead-in cab le shall meet Subsection

640.02.2 2 specifications.

Category 6 Cable. Category 6 (Cat6) cable shall be outdoor and industrial rated, shielded, and shall be suitable for underground use. Cable shall have a AWG 24 integrated electrostatic discharge drain wire. Cable sh all conform to the global cabling, ISO/IEC 11801 standards. The cable standard provides performance of up to 250 MHz and is suitable for 10BASE-T, 100BASE-TX (Fas t Ethernet), 1000BASE-T/1000BASE-TX (Gigabit Ethernet), and 10GBASE-T (10-Gigabit Ethernet). Cable shall be UL Copper pairs and shall be AWG 24 solid copper and ha ve solid polyolefin insulation. Cable shall have an inner jacket of linear low density. Cable shielding shall be aluminum foil bonded to polyester film to provide 100% shield coverage. The cable shall have a linear low density polyethylene outer jacket rated for sunlight resistance, oil resistance, and a maximum operating voltage of 300 V RMS. Communication Cable. Communication cables shall be paired polyethylene insulated, polyethylene jacketed cable with electrical shielding rated at 300 volts. Communication cables installed underground in conduit shall meet the requirements of IMSA Specification No. 40-2. Communication cables that are aerial cables with messenger support strands shall meet the requirements of IMSA Specification No. 40-4.

722.04 Galvanized St randed Steel Cable. Galvanized steel strand cable used as

messenger, tether and guy cable shall be Utilitie s Grade manufactured with seven (7) wires per strand. All cables shall meet the requirements of ASTM A475, Class B, Standard Specification for Zinc-Coated Steel Wire Strand. The base metal used in manufacturing cables shall be steel of such quality and purity that, when drawn and coated, the finished strand and the individual wires shall be of uniform quality. Strands shall have a left lay with uniform tension and the finished wire shall be capable of being wrapped in a close helix without cracking or delaminating the zinc coating. Joints shall be either the brazed or electric butt welded. The following cable sizes shall be used as indicated:  Messenger Cable - 3/8-inch diameter  Tether Cable - 3/8-inch diameter  Guy Cable - 3/16-inch diameter Brackets and/or other devices for aerial suppo rt shall be in accordance with details shown on the plans or approved by the Engineer. 722.05--Traffic Signal Conduit .

722.05.1 General. The Traffic Conduit shall be of the following types and indicated in

the plans.

722.05.2 Type I Rigid Galvanized Steel. Type I conduit shall be made of rigid

galvanized steel meeting the requirements of American Standards Association (ASA) Specifications C 80.1 and Underwriters Laboratory (UL) UL6. The weight of zinc coating shall be no less than 0.5 ounce per square f oot of coated surface in accordance with AASHTO T65.

722.05.3 Type II Rigid Copper Nickel, Steel Alloy, Hot Dip

Galvanized . Type II conduit shall be made of rigid copper nickel, steel alloy, hot dip galvanized containing 1.6 to 2.2 percent nickel and 0.75 to 1.25 percent copper conforming to American Standard Association (ASA) Specification C 80.1 and Federal Specification WW-C-581E. The weight of zinc coating shall be no less than 0.5 ounce per square foot of coated surface in accordance with AASHTO T65.

722.05.4 Type III or Type IV Rigid Non-Metallic Conduit. Type III and IV conduits

shall be made of rigid polyvinyl-chloride (PVC) meeting ASTM D 1785, as well as National Electric Manufacturers Associatio n (NEMA) Publication and Underwriters Laboratory UL 651.

722.05.5 Flexible Conduit. Flexible conduit shall be a smooth wall, high density

polyethylene (HDPE) conduit designed to be used for cable. Unless otherwise approved by the Engineer, the conduit shall meet the requirements of ASTM Designations: D 2447, D 3035, D 3485, D 2239 and NEMA TC7.

722.05.6 Poly Vinyl Chloride (PVC) Coated Conduit. In addition to the above

requirements for Type I condu it, PVC coated conduit shall meet the requirements of UL 6 and NEMA RN1. The conduit shall be coated on the exterior by a 40-mil thick coating of PVC and on the interior by a 2-mil thick coating of urethane. All fittings for PVC coated conduit shall meet th e requirements of UL 514B and NEMA RN1 and have the same coating type and thickness.

722.05.7 Roll Pipe Conduit.

722.05.7 1--General. Roll pipe conduit, or duct, shall be manufactured from virgin high

density polyethylene (HDPE) materials. Th e ducts shall be supplied with smooth walls and available in a variety of colors. The duct shall be capable of being coiled or reeled in continuous lengths, transported, stored outdoors and subsequently uncoiled for installation without affecting its properties or performance.

722.05.7 2--Environ mental Performance. The duct shall perform in underground and

above-ground installations in an ambient temperature range of -30°F to +130°F without degradation of material properties. The du ct specified for aerial installation shall be ultraviolet light-resistant. The duct shall be capable of being bent to a minimum supported radius of 10 diameters.

722.05.7 3--Workmanship. The duct shall be free of visible cracks, holes or other

physical defects that would degrade its performan ce. It shall be as uniform as practicable in respect to overall dimensions, color, density, thickness, etc.

722.05.7 4--Color. The duct for exposed areas shall be carbon black. All other colors

shall have a UV light stabilizer that will protect the duct for a minimum of 12 months in direct sunlight.

722.05.7 5--Markings. The duct shall have a durable identification showing the name or

trademark of the manufacturer, duct size, date and reference code; i.e. 2-inch IPS SCH-80. Length intervals of one foot shall be marked along the duct. Duct specifically intended for electrical cable should have “CAUTION – HIGH VOLTAGE” printed at regular intervals.

722.05.7 6--Plugging Ends. The open ends of each length of reeled duct shall be sealed

by plastic caps or with duct seal compound to prevent the entrance of dirt and moisture. 722.05.7.7--Dimensions. The dimensions of the duct shall be as per ASTM D 3035. Wall thickness shall be identified by Standard Diameter Ratio (SDR) designation. The manufacturer should advise the wall thickness re quired for a particular installation and/or conditions.

722.05.7 8--Pre-lubricated Duct and Pull Rope. The duct shall be factory pre-lubricated

to provide a permanent low friction surface. Factory installed low- friction surface or pre- lubricated rope or tape should be provided to lower pulling tensions.

722.05.7 9--Couplings. Couplings should be available to quickly connect the duct and

should be air and liquid-tight.

722.05.7 10--Reels. The duct should be provided on lightweight metal reels in maximum

lengths possible with no joints or splices allo wed. Reel configurations may be paralleled or compartmentalized to meet specific duct bank installation needs. Lift forks shall never be allowed to contact duct during loading or unloading from trucks.

722.05.7 11--Corrosion. The duct shall be resistant to most harsh chemicals and/or

protected against degradation due to oxidation or general corrosion.

722.05.7 12--Installation. The duct shall be capable of being direct buried by plowing or

trenching with no special consideration to usin g selective backfill. The duct shall also be capable of being encased in concrete and pulled through a drilled hole.

722.05.7 13--Tests on Finished Duct. Lab tests certifications required for finished

products shall include, but are not limited to, the following:  ASTM D 3035, Polyethylene Plastic Pipe Based on Controlled Outside Diameter  ASTM D 1238, Melt Flow Rates of Thermoplastics by Extrusion Plastometer  ASTM D 1599, Resistance to Short-Time Hydraulic Failure Pressure of Plastic Pipe

722.06 Pull Boxes .

722.06.1 Pull Box Enclosures, Grade-Level. Pull box enclosures and covers shall be

made of either precast Class “B” concrete or composite material using matched surface tooling and shall conform to all test provisions of the latest version of ANSI/SCTE 77 - Specification for Enclosure Integrity.

722.06.2 Surface Mounted Pull Box. Surface mounted junction boxes shall be cast iron,

inside flanged and gasket for a NEMA 4 rating. Boxes shall be of size and characteristics as indicated on the plans.

722.07 Circuit Breakers . Circuit breakers shall be a fixed mount, instantaneous

magnetic trip-only type, fully enclosed in a molded case of insulating material rated according to the UL 489 Standard. The current carrying parts, mechanisms and trip devices shall be completely contained within the molded case of insulating material. Each AC circuit breaker used shall interrupt the specified amperage at various voltages. Each circuit breaker shall be independently removable from the enclosure for inspection or replacement. The ON and OFF positions on each circuit breaker shall be clearly labeled. The operating handle shall be trip-free so that contact cannot be prevented from tripping by holding the operating handle in the ON position. The circuit breakers maximum rating should always be in excess of the utilization equipment rating to provide for a short-time overload capability. The short circuit current shall be rated at the breaker's maximum volta ge (ANSI) or voltage class (IEC). The continuous current rating shall be at the rate d voltage for ANSI breakers or the normal current on IEC breakers. Circuit breakers shall be such that their current rating and the instantaneous trip point and the continuous current rating are unaffected by ambient temperature variations. The instantaneous trip point shall be no greater than eight (8) times the continuous current unit rating. Circuit breakers shall have bu ilt in arc flash boundary protection and quick break when tripping automatically.

722.08 Terminal Blocks . Each field wiring terminal block shall be a heavy-duty or

industrial rated UL and NEMA Class 600 volt, direct mount barrier type device. Terminal blocks shall be constructed of a single piece molded phenolic base with a twelve (12) double point, corrosion resistant, strap scre w configuration. Terminal screws shall be binding head type, no smaller than size 10-32 with no less than 9/16 inch center to center spacing. Terminal block slots shall fit spade lug type terminating devices. Waterproof labeling strips shall be provided on all terminal blocks. All current carrying parts of the terminal blocks shall be insulated from the fixture with integral plugs or strips to provide an insulating value in excess of the line-to-ground flashover voltage. If the Contractor elects to use sectionalized terminal blocks, each section shall be provided with an integral barrier on each side.

722.09 Grounding and Ground Rods . Ground rods used shall be copper clad, steel

rods of the diameter and length shown on the plans. Ground rods shall conform to the requirements of UL-467. Grounding rod couplers shall be UL approved, made from bronze, stainless steel or copper clad with a solid center providing 100 percent conductivity. Single ground rods shall be driven vertically until the top of the rod is at least 12 inches below the finished ground. Bare solid conductor copper wire, AWG 6 shall be used for grounding conductor and bonding jumpers unless otherwise stated in the plans. Bare solid conductor copper wire shall meet the requirements of ASTM B2. The grounding conductor shall be continuous and shall be connected to a common ground system between all supporting poles and structures, to each transformer, to each sign support assembly, to each gate, and to each grounding conductor in a multi-conductor cable assembly. Additional grounding rods electrodes (up to four (4) rods) shall be installed to obtain a maximum value of five (5) ohms to ground. Bolted grounding connections of solder-less type made of the high strength electrical bronze with silicon bronze clamping bolts and hardware may be used; designed such that, bolts, nuts, lock washers and similar hardware that might nick or otherwise damage the ground wire will not directly contact the ground wire. Grounding splices shall not be insulated. Exothermic welded ground connections shall be use where specified.

722.10 Expansion Fittings. Expansion fitting shall be made from exterior and interior

zinc galvanized, ductile iron, fixed and expansion jointed by rigid steel conduit sleeves. The fitting may be constructed such that disasse mbly is not required for installation. The fixed head may be integral with the sleeve , forming a one (1) piece body of galvanized malleable iron. Tin copper braid jumpers shall be provided. 722.11--Miscellaneous Hardware . All bolts, nuts, washers and other hardware shall be galvanized steel, stainless steel, or aluminum unless otherwise specified on the plans. Steel hardware that is galvanized shall be coated through hot-dip proces s in accordance with ASTM A153.

722.12 Surge Suppressors. This section describes the minimum requirements for surge

suppressors including surge suppressors for electrical power and data cabling. Transient Voltage Surge Suppressor (TVSS). The Contractor shall provide TVSS on all electrical service points and the input side of all transformers. The Contractor shall install TVSS as follows:

722.13 Electrical Service Equipment.

722.13.1 Meter Base. Meter bases shall be NEMA Type 3R with a minimum rating of

100 amps and shall meet the requirements of the local utility. The meter base shall be provided with ampere rating of meter sockets based on sockets being wired with insulated wire rated at least 167°F. Meter bases shall be four (4) terminal, 600 volt, single phase, three (3) wire furnished with the following:

722.13.2 Disconnect. External electrical service disconn ects shall be furnished with a

single pole 50-amp inverse time circuit brea ker with at least 10,000 RMS symmetrical amperes short circuit current rating in a lock able NEMA 3R enclosure. Disconnects shall be listed as meeting UL Standard UL-489 and marked as being suitabl e for use as service equipment. The disconnect enclosure shall be fabricated from galvanized steel and electrostatically apply dry powder paint finish, light gray in color, to yield a minimum thickness of 2.4 mils. Ground bus and neutral bus shall be provided with at least four (4) terminals with minimum wire capacity range of number 14 through number 4.

722.13.3 Ground Mounted – Pedestal – Service Panel. The pedestal shall be of NEMA

Type 3R rainproof construction and shall be UL Listed as “Enclosed Industrial Control Equipment” (UL 508A). External construction shall comply with UL50 requirements and shall be of G90 galvanized steel with light green #14672 Federal Specification 595 polyurethane industrial grade powder paint. Hinges shall be stainless steel and of the continuous piano hinge type. The pedestal mounting bolts shall not be extern ally accessible. The pedestal shall be able to be embedded in concrete or use anchor bolts for mounting on concrete base. Either pedestal mounting base or anchor bolt kit shall be required for installation. The service pedestal shall have three separate isolated sections for metering equipment, utility termination and customer equipment. The metering section shall be pad-lockable and sealable and have a hinged swing hood with an integral hinged polycarbonate seal able window for access to demand meters. Meter socket type shall meet the requirements of the serving utility. The utility termination section shall be pad-lockable and sealable and shall have a stainless steel handle provided on a lift-off cover. Sufficient clearance shall be provided for a 4- inch diameter conduit for utility cables entrance. Utility landing lugs shall be UL listed and shall accommodate #6 – 350 kcmil conductors. The customer compartment door shall be hinged on the left hand side. A stainless pad-lockable hasp shall be provided to secure cu stomer compartment. A door keeper shall be provided to keep the door in an open position. A print pocket shall be provided on the inside of the door in a weatherproof sleeve. Required UL labeling shall be located on the inside of the customer door. Distribution and control equipment shall be behind an internal dead-front door with a quarter-turn securing latch and shall be hinged to open more than 90 degrees. The dead-front door shall be hinged on the same side as the customer section door. All distribution and control equipment shall be factory wired using 600 volt wire sized to NEC and UL requirements. The service pedestal shall be rated for operation at 10K minimum (AIC) amps interrupting capacity. The provided documentation shall list circuit breaker combinations and those to be used for de-rated operation for series rati ngs. Circuit breakers shall be permanently labeled with engraved name plates. The serving utility shall be consulted for requirements before ordering or installing equipment.

722.14 Signal Heads .

722.14.1 Traffic Signal Heads. Traffic signal heads shall consist of all component materials necessary to form heads as specifi ed on the plans and shall be complete with

attachments for pole mounting, span wire mounting or mast arm mounting, as indicated, and for tie-ins to the feeder cable. These signal heads shall meet the requirements of the latest ITE standards for Adjustable Face Vehicle Traffic Control Signal Heads, th e National Electrical Code and the MUTCD, where applicable. No splicing of electric cables will be allowed ex terior to the signal head. Quick disconnect hangers will be required where electric cables are too large to enter and leave the normal wire entrance fitting. However, in any signal in stallation, if one (1) signal head requires quick disconnect hangers, then all heads on th at installation shall be furnished with quick disconnect hangers.

722.14.1 1--Housing .

722.14.1 1.1--Materials . Each housing shall be made of one of the following materials:

722.14.1 1.2--Features . Each housing shall be furnished with provisions for mounting of

a back plate. The top and botto m of the housing shall have an opening two inches (2”) in diameter to accommodate standard 1½-inch pipe, with no other opening in the top or bottom of the housing. Individual signal sections shall be fastened together, one above the other into a complete signal face, by means of plated nuts, bolts and washers in such a manner that any section may be rotated about a vertical axis and positioned at an angle with respect to any adjacent section. The opening hub shall have 72 circumferential serrations to secure each section in its orientation, adjustable in five (5) degree increments, and prevent its inadvertent rotation. A minimum 6-position labeled barrier terminal block shall be provided in each signal face for the purpose of field connections. The barrier terminal shall be installed in the circular yellow or yellow arrow section of each signal face. If the face has both of these sections, the terminal block shall be installed in the circular yellow section. There shall be provisi ons for the attachment of a 3/16-inch tether line to the bottom of each span wire mounted signal head. A pinnacle shall be provided to close all 1½-inch holes in each housing that will not otherwise be sealed from the weather when installed with the specified mounting hardware.

722.14.1 2--Door . Each door shall be made of a materi al that is one of the above materials

and that is compatible with the material of the housing, except that doors for plastic housings shall be plastic. The outer face of the door shall have four (4) holes equally spaced about the circumference of the lens opening to accommodate the secure mounting of the signal head tunnel visor. The visor shall fit flush against the door and no light shall leak between the door and the visor. Two (2) stainless steel hinge pins shall attach the door to the housing, one (1) in the upper left corner and one (1) in the lower left corner of the door. Two (2) stainless steel wing screws, one (1) in the upper right corner and one (1) in the lower right corner of the door, shall be used for opening the door and closing it tight against the housing. The wing screws shall be installed through the door with keepers to prevent their accidental removal or falling out. The removal of the hinge pins and the operation of the wing screws shall not require the use of tools.

722.14.1 3--Optical System . The optical system shall consist of LED signal modules that

shall be sealed units comprised of an outer lens, an optical lens, a printed circuit board for LEDs and entirely enclosed power su pply, a back cover and a gasket. The assembly and manufacturing process for the LED signal modules shall be designed to assure all internal LED and electronic components are adequately supported to withstand mechanical shock and vibration from high winds and other sources as per MIL-STD-883. The LED signal module shall be rated for use in the ambient operating temperature range of -40°F to +165°F. The LED signal module lens shall be UV stabilized and shall have a uniform incandescent, non-pixilated appearance. The light distribution of each LED shall be maximized by an internal beam controlling optical faceted lens designed and patented to meet the 44 points measurement of the VTCSH standard, Part 2. The outer cover made of ultraviolet stabilized polycarbonate shall be convex with a smooth outer surface and be an integral part of the module. The chip in the ultra-bright 1/5-inch LEDs shall be made using AlInGaP for red and amber, and InGaN technology for the green, and be rated for 100,000 hours of continuous operation by the LED manufacturer. Enclosures containing either the power supply or electronic components of the signal module shall be made of UL94VO flame retardant materials. The measured chromaticity coordinates of LED signal modules shall conform to the chromaticity requirements of Section 8.04 and Figure 1 of the VTCSH standard. The LED manufacturers indicate the following X-Y coordinates for their respective LEDs. The X value for red LEDs varies from 0.690 to 0.708 and the Y value varies from 0.292 to 0.306. The value X for amber LEDs varies from 0.554 to 0.575 and the Y value varies from 0.424 to 0.445. The X value for the green LEDs varies from 0.1090 to 0.1138 and the Y value varies from 0.5673 to 0.5830. All wiring and terminal blocks shall meet th e requirements of Section 13.02 of the VTCSH standard. Two (2) secured, color-coded, three feet (3’) long, 600 V, 20 AWG minimum, jacketed wires, conforming to the National El ectrical Code, rated for service at +221°F, shall be provided for electrical connection. The module shall operate on a 60 Hz AC line voltage ranging from 80 volts rms to 135 volts rms with less than ten percent (10%) light intensity variation. Nominal rated voltage for all measurements shall be 120±3 volts rms. The circuitry shall prevent flickering over this voltage range. The individual LEDs shall be wired so that a catastrophic failure of one (1) LED will result in the loss of only that one (1) LED, and not the entire string of LEDs or the entire module. The power supply must permit the regulation of the current supplied to the LEDs to maintain a constant current. The LED signal and associated on-board ci rcuitry must meet Federal Communications Commission (FCC) Title 47, Sub-Part B, Section 15 regulations concerning the emission of electronic noise. The LED signal module shall provide a power factor of 0.90 or greater at 77°F and at the nominal operating voltage. Total harmonic distortion (THD), current and voltage, induced into an AC power line by a signal module shall not exceed twenty percent (20%), over the operating voltage range specified in Section 14 and w ithin the ambient temperature ra nge specified in Section 4. The signal module on-board circuitry shall include voltage surge protection to withstand high-repetition noise transients and low-repe tition high-energy transients as stated in Section 2.1.6, NEMA Standard TS-2, 1992. The LED signal module shall operate from a 60±3 Hz ac line power over a voltage range from 80 VAC rms to 135 VAC rms. The current draw shall be sufficient to ensure compatibility and proper triggering and opera tion of load current switches and conflict monitors in signal controller units the procuring traffic authority customer has in use. Load switches shall be compatible with NEMA TS-1 or later, or Model 170-1989 or later. All LED signal modules shall be energized for a minimum of 24 hours, at 100 percent on-time duty cycle, in an ambi ent temperature of 140°F. Each socket shall be provided with one (1) black lead from the sock et and one (1) white lead from the shell. Terminal blocks shall be a 6-position, 12-block, terminal barrier strip placed in the top or red section of all traffic si gnal heads. Terminal blocks shall be secured on both ends The manufacturer shall warrant y the LED module for a minimum of five (5) years. The LED modules shall be replaced if the module fails to function as intended due to workmanship or material def ects or if the module exhibits luminous intensities less than the minimum specified values within the first five (5) years from the date of delivery.

722.14.1 4--Visors . Each signal door shall be fitted with a tunnel visor. Eight-inch signals

shall have visors a minimum of seven (7) inches long, 12-inch signals shall have visors a minimum of nine and one half (9 ½) inches long. The outside of the visor shall be black or federal yellow as directed by Engineer. The inside of the visor shall be flat black. The visors shall be attached to th e door at four (4) equally spaced locations with four (4) placed screws or four (4) bayonet type self-locking tabs integrally formed with the visor. Visors for polycarbonate signal heads shall be made of a corrosion resistant polycarbonate resin at least 0.100 inch thick. Visors for metal signal heads shall be made from 0.064-inch minimum thickness aluminum alloy sheet.

722.14.1 5--Back Plate . Each signal head assembly shall be equipped with a back plate

with a minimum width of five (5) inches with radius corners. Steel rivets shall be provided for mounting to the signal housing. All back pl ates shall be fabricated from a one (1) piece vacuum formed corrosion resistant, flat poly carbonate resin material at least 0.125 inch thick or 0.064-inch minimum thickness aluminum alloy sheet. Where specified in the plans, a 2-inch retror eflective yellow tape shall border the back plates.

722.14.1 6--Lenses . Traffic signal lenses shall be circul ar, red, yellow, or green in color,

and 8-inch or 12-inch nominal diameter, as shown on the plans. No legend shall be permitted. Arrow lenses shall be circular, 12 inches in diameter, green or yellow in color, and be opaque except for the arrow legend. Th e lenses shall conform to all the applicable sections of the latest edition of ITE's Standard on Adjustable Face Vehicular Traffic Control Signal Heads.

722.14.1 7--Mounting Hardware . Span wire suspension fitting with cable entrance shall

be a one-piece malleable iron casting, minimu m wall thickness of 3/16 inch, and free of flash and voids. The cable entrance shall have a plastic bushing with a minimum inside diameter of one and one-quarter inches (1¼”). The suspension fitting shall provide six (6) separate, clevis pin positions for balancing the signal assembly. The thickness of the solid casting in this suspension area shall be a minimum of 5/8 inch. A hex head threaded malleable iron lock nipple shall be provided for attaching the signal head to the bottom of the suspension fitting fo r one face signals or to the top br acket of multiface signal brackets. The mounting hardware for each signal face sh all include a nylon, serrated, 72-tooth lock ring with full locking pins and a circular neoprene gasket for weather sealing. Span wire suspension clamp assembly, consisting of a galvanized, malleable iron span wire clevis saddle, 5/8-inch diamet er plated steel clevis pin with cotter key, two (2) ½-inch plated steel "U" bolts with nuts and washers, no "J" bolts are permitted, and a galvanized malleable iron cable locking bar, all fitted for 3/8-inch guy span. Galvanizing is to meet ASTM A 153. Brackets shall consist of a malleable iron ce nter outlet body, schedule 40 pipe, elbows, serrated fittings, and other hardware as re quired to provide a multi-face signal head assembly with internal wiring race ways to each face as specified. Mounting brackets for mast arms shall conform to Subsection 722.11.

722.14.1 8--Color, Finish and Painting. Polycarbonate resin hardware shall have color

impregnated throughout the material. The finish shall be smooth and unflawed. All metal hardware, except those specified as galvanized , plated, or stainless steel shall be painted with a primer coat and a finish coat of th e best quality oven baked enamel. Lenses, reflectors, gaskets and polycarbonate parts shall not be painted. The following signal head parts shall be colored either black or federal yellow as directed by Engineer: Vehicle Head: Housing; Door; Tunnel Visor; B ack Plate; and Pole Bracket.

722.14.2 Traffic Signal Heads - Optically Programmed . Optically programmed traffic

signal heads shall, in addition to the requiremen ts prescribed in Subsection 722.14.1, be so constructed, programmed, and operable, as to limit the visibility of the indication exclusively to the area where it is desirable that the indication be seen. This is to be accomplished with a built-in High Resolution Optical System designed for the purpose and can be accomplished by an arrangement of ho ods, louver, or other external means as directed by the plans or Engineer.

722.14.3 Pedestrian Signal Heads . Pedestrian signal heads shall consist of all

component materials necessary to form head s as specified in the plans and shall be complete with attachments for pole or post mounting. Heads shall conform to the applicable parts of the MUTCD. Single section pedestrian heads shall be constructed of die cast aluminum. The housing shall be painted black or federal yellow as directed by the plans or Engineer. The housing and door shall be designed such that when properly assembled, they shall provide a waterproof and dustproof enclosure. All sc rews, bolts, hinge pins and other necessary fasteners shall be stainless steel. Prior to assembly, the housing and door frame shall be painted with one (1) coat of primer and two (2) coats of enamel. Color shall be black or federal yellow as directed by the plans or Engineer. An "egg crate" or "Z" crate type visor constructed of 0.030-inch minimum thickness and 100% impregnated black polycarbonate strips shall be provided with the signal head. The visor assembly shall be at least 1½ inches deep and shall be bordered by a 0.040-inch minimum aluminum frame. The design, manufacture and testing of lens es shall conform to the parts concerning "Traffic Signal Lenses" as set forth in "A Standard for Adjustable Face Traffic Control Signal Heads" as published by the Institute of Transportation Engineers. Individual letters of the legend shall be 4½ inches high. The LED signal module lens shall be UV stabilized and shall have a uniform incandescent, non-pixilated appearance All pedestrian signal heads shall be “Countdown Type” and meet the requirements of the MUTCD. All pedestrian signal heads shall be LED modules fully compliant to the latest adopted version as listed, at time of bid, IT E PTCSI Part-2: LED Pedestrian Traffic Signal Modules. Additionally, prior to bid award, the manufacturer shall submit to purchaser, reports from ETL/Intertek that certify full compliance of LED signal modules, to these specifications. Evidence of full compliance to all required testing methods, procedures and sections as outlined in the above ITE document Attachment 2, “Design Qualification Testing Flow Chart” shall be included without any exceptions, changes or omissions. The manufacturer shall also submit a data sheet sh owing the exact catalog number of the items submitted on the bid and the Independent Lab re port must show full qualification of this catalog number. Combination hand/person pedestrian signal modules shall incorporate separate power supplies for the hand and the person icons. The manufacturer shall warrant y the LED module for a minimum of five (5) years. The LED modules shall be replaced if the module fails to function as intended due to workmanship or material def ects or if the module exhibits luminous intensities less than the minimum specified values within the first five (5) years from the date of delivery.

722.14.4 Pedestrian Signal Heads - Optically Programmed . Optically programmed

pedestrian signal heads shall, in addition to the requirements prescribed in Subsection

722.14 3, be constructed, programmed, and operable as to limit the visibility of the

indication exclusively to the area where it is desirable that the indication be seen. This shall be accomplished with a built-in High Resolution Optical System designed for the purpose and is not to be accomplished by an arrangement of hood s, louvers or other external means.

722.14.5 Turn-Signal Sign . The turn-signal signs, as indicated on the plans, shall

conform to the applicable requirements of Section 631.

722.14.6 Tether Cable . Tether cable attached to the bottom of the signal head shall

conform to the requirements of Subsection 722.04 and shall be the size shown on the plans. Tether cable clamps shall be designed such that the clamp will break away without damage to the signal head when the teth er cable is hit by a vehicle.

722.14.7 Back Plate . Back plates shall be required on all new traffic signal heads. Back

plates shall be one-piece vacuum formed construction and meet the requirements of Subsection 722.14.1.5.

722.14.8 Audible Pedestrian Signals. All pedestrian signals shall provide audible

pedestrian indications. Audible pedestrian signals shall provide a “Cuckoo” output (north/south) with a duration 0.6 seconds ±20%, Frequency 1,100 Hz ±20%, and Frequency Deviation +120 Hz ±20% and “Peep-Peep” output (east/west) with a duration 0.2 seconds ±20%, Frequency 2,800 Hz ±20%, Frequency Deviation -800 Hz ±20%. The audible pedestrian signal shall operate at 115 Volts AC (±22%) at 60Hz, 3 Watts. The output shall be 90dB @ 1 watt/1 meter. The audible pedestrian signal shall operate within a humidity range of 5% to 95% relative humidity within a temperature range of -35°F to +165°F. Prior to assembly, the audible pedestrian signal shall be painted with one (1) coat of primer and two (2) coats of enamel. Color shall be bl ack or federal yellow as directed by the plans or the Engineer. SECTION 723 - MATERIALS FOR ROADWAY LIGHTING INSTALLATION

723.01 General . Acceptance of all material in this Section is subject to Subsections

106.01 and 106.04 entitled "Source of Supply and Quality Requirements" and

"Certification of Compliance," respectively.

723.02 Secondary Distribution.