774
The backup plates for the hazard markers shall be at least 0.064 inch {1.6 mm} thick aluminum sheets. The surface of the marker facing traffic shall be treated with a coating of baked on yellow enamel (Highway yellow). Attachment of the reflectors to the backup plate and of the backup plate to the post or mounting surface shall be in accordance with the details shown on the plans or an approved substitute.
Posts used for mounting hazard markers shall be in accordance with the details shown on the plans and the requirements of Subarticle 881.01(c).
Mountings other than on posts shall be in accordance with plan details.
Sampling and Testing of the reflector units shall be as prescribed in Subarticle 881.02(b).
The panel shall comply with the requirements of Section 880 for signs with the legend or marking as required by plan details. Sign panels shall be sampled and tested as prescribed in Section 880. PAVEMENT MARKERS
882.01General
The Department has established LIST V-2, PERMANENT PAVEMENT MARKERS, TEMPORARY PAVEMENT MARKERS, MARKER ADHESIVE, DELINEATORS AND HAZARD MARKERS, of the Department's manual, "Materials, Sources, and Devices With Special Acceptance Requirements", for permanent pavement markers. Only markers on this list shall be furnished for use. Refer to Subarticle
106.01(f) and ALDOT-355 concerning this list
All markers on LIST V-2 may be used as temporary markers. Only markers on this list shall be furnished for use. Refer to Subarticle 106.01(f) and ALDOT-355 concerning these lists.
The markers shall be supplied in suitable containers which will protect the units from damage during shipment and storage. Containers shall be legibly marked with the name and type, etc. of the contents.
882.02Reflective Markers
Class "A" pavement markers shall meet the requirements of ASTM D 4280 with Surface Characteristics: No Designation - Marker with plastic lens surface.
Class "A-H" pavement markers shall meet the requirements of ASTM D 4280 with Surface Characteristics: Designated "H" - Marker with hard, abrasion-resistant lens surface.
882.03Non-Reflective Markers
Class B pavement markers shall be formed of heat fixed ceramic base material constructed in such a manner as to form a solid, watertight unit. The markers shall be of the general size and shape shown on the plans with smooth rounded corners. Any change in the curvature shall be gradual. The top and sides of the marker shall be smooth and free from mold marks, pits, indentations, air bubbles, or other objectionable marks or discolorations. The base of the marker shall be flat (deviation from a flat surface shall not exceed 0.05 inch {1.27 mm}) rough textures (comparable to at least that of a fine grade sand paper) and free from gloss or substances which may reduce the markers bond to the adhesive. ROADWAY LIGHTING MATERIALS 775
Ceramic - Heat fired, vitreous, ceramic base and a heat fired, opaque, glazed top surface. The bottom surface shall be unglazed, suitable for cementing to the road surface. The marker may be produced from any suitable combination of intimately mixed clays, shales, talcs, or other inorganic material. The marker shall be thoroughly and evenly matured and free from defects which will affect the appearance and serviceability.
White - Brightness relative to Magnesium Oxide - 80% Minimum. Yellow - Brightness relative to Magnesium Oxide - 40% Minimum and match the standard shade within the red and green balances when compared with Color Chip 33538 of Federal Standard No. 595.
kPa} - ASTM C 424.
A marker shall be centered over the open end of a vertically positioned hollow metal cylinder. The cylinder shall be at least 1 inch {25 mm} high, with an internal diameter of approximately 3 inches {75 mm}, and with a minimum thickness of 1/4 inch {6 mm}. Loading shall be slowly applied to the top of the marker through a 1 inch {25 mm} diameter by 1 inch {25 mm} high metal plug centered on the top of the marker. An average compressive strength of three markers shall be obtained; however, any individual marker which fails under a compressive load of less than 1200 pounds {500 kg} shall be cause for rejection of the marker lot being tested.
The adhesive tensile bond strength to the bottom of the marker accepted for use on the project and the epoxy adhesive accepted for use on the project shall be not less than 1500 psi {10 MPa}.
882.04Adhesives For Pavement Markers
Bituminous adhesive used to affix permanent pavement markers to the pavement shall be one of those listed in List V-2 of the Department's manual "Materials, Sources, and Devices with Special Acceptance Requirements." The adhesive used to affix the temporary markers to the pavement shall be any suitable type of adhesive for the intended purpose, except that in those locations where the markers will be required to be removed, the adhesive shall be a type that will allow for the complete removal of the marker without scarring or disfiguring the pavement. ROADWAY LIGHTING MATERIALS
889.01General
Electrical materials shall conform to the requirements given in the current edition of the NFPA 70, "National Electrical Code" (NEC). Electrical materials shall also conform to the standards of the American National Standards Institute (ANSI), the National Electrical Manufacturers Association (NEMA), and the Underwriters Laboratories, Inc. (UL), in every case where a standard has been established. All materials shall be "listed" by one or more of these organizations. The mark of the listing organization shall appear on electrical material and equipment. Units of any one item (such as poles, luminaires, lamps, control devices, enclosures, circuit breakers, etc.) shall be made by the same manufacturer.
889.02Conduit
Rigid metal conduit, couplings, and fittings shall be galvanized steel, meeting the requirements given in UL 6. Couplings and fittings shall be threaded. ROADWAY LIGHTING MATERIALS 776
Liquidtight flexible metal conduit shall meet the requirements given in UL 360. The thermoplastic covering shall be oil resistant.
Liquidtight flexible non-metallic conduit shall meet the requirements given in UL 1660.
Rigid nonmetallic conduit shall be Schedule 40 PVC and shall meet the requirements given in UL 651.
Nonmetallic Underground Conduit with Conductors (NUCC) shall meet the requirements given in UL 1990.
889.03Lighting Circuit Conductors
All conductors in the lighting circuits shall be stranded copper with 600 Volt-AC insulation rating. Insulated conductors shall be Type RHW, RHW-2, XHHW or XHHW-2 meeting the requirements given in UL 44. The size of the conductor, voltage rating, and insulation type shall all be clearly marked on the conductor in a color that contrasts with the insulation color.
Unless designated otherwise by the requirements given in the NEC, conductors shall be identified as follows. Equipment grounding conductors shall be bare or shall be identified by a continuous green color insulation. Grounded conductors (neutrals) shall be identified by continuous white or gray color insulation. Current carrying conductors may be identified by any color insulation other than white, gray or green and shall have a consistent color for each conductor.
Splices and terminations shall be made with materials which are listed for that purpose. Grounding conductors shall be connected to structures using materials specifically listed for grounding.
The Contractor shall furnish and install the conductors, connectors and fittings in the luminaire poles for supplying power to the luminaries. The required details of the conductors, connectors and fittings are shown on the plans.
889.04Fuses and Fuse Holders At Breakaway Luminaire Supports
Fuses for installation within fuse holders for the protection of lighting branch circuits shall be small-dimension cylindrical fuses designed for fast acting current limiting. The fuses shall be rated for 600 volts AC and shall have a UL listed interrupting rating of not less than 10,000 rms symmetrical amperes at rated voltage. Fuses for luminaires shall be rated at 300% of the starting or operating current, whichever is greater, but in no case greater than the branch circuit conductor ampacity.
The fuse holder shall be capable of disconnecting upon sufficient tension in the connected wires, as in a pole knockdown. The fuse shall remain enclosed in the de-energized portion of the fuse holder upon disconnection. The fuse shall not be utilized as the disconnection means; a separate plug and receptacle shall be utilized for the disconnection means. The fuse holder assembly shall connect to the load-side quick disconnect receptacle.
889.05Junction Boxes
Non-metallic junction boxes shall be made from polymer concrete. With approval of the Engineer, slight deviations to a larger size box may be allowed to conform to a standard manufacturer's production size. The cover shall be attached with stainless steel hex-head bolts factory coated with anti-seize compound. A box installed at grade shall be capable of withstanding an A16 loading in accordance with the requirements given in ASTM C 857. The box and lid shall be a light gray color to match the surrounding ROADWAY LIGHTING MATERIALS 777
concrete. The box shall be constructed with an open bottom. The cover shall fit flush with the surface shown on the plans. A box installed in a structure (such as concrete barrier rail) shall have the exposed face of the box flush with the surface of the structure. If the size of the box is not shown on the plans, the minimum size shall be 12 inches {300 mm} long by 10 inches {250 mm} wide by 5 inches {125 mm} deep. Conduit openings may be factory cut.
Metallic junction boxes shall be aluminum or stainless steel NEMA Type 4 unless shown otherwise on the plans. A grounding lug shall be provided for the connection of the equipment grounding conductors. Metallic boxes shall be installed only above ground and shall be suitable for surface mounting.
889.06Service Pole
Service poles shall be treated in accordance with the requirements given in Section 833.
889.07Lighting Control Center
An aluminum identification plate shall be permanently affixed to the outside of the cabinet door. The identification plate shall be sized to provide the message "Alabama Department of Transportation Lighting Control Center *" either etched or embossed in 1 inch {25 mm} high letters. The identification (A, B, C, etc.) of the lighting control center shown on the plans shall be placed on the identification plate where * is shown in the description of the wording required on the identification plate. The letters shall be delineated in black enamel. The control cabinet shall be constructed of 0.125 inch {3.175 mm} thick Aluminum unless shown otherwise on the plans and shall be rated NEMA Type 3R. Each cabinet shall be provided with a 12 gauge steel interior panel for mounting of components. The cabinet shall not be smaller than the minimum dimensions shown on the plans. The cabinet shall be large enough to adequately house all required components with room for arrangement and termination of wiring and room for the inclusion of space for two future lighting circuits. The cabinet door shall be mounted to the cabinet with a continuous hinge, located on either side of the cabinet (right-hand or left-hand door opening). The cabinet door shall also have a handle- operated three-point latching system located on the opposite side of the continuous door hinge. The door handle shall contain a “Corbin”, or an approved equal, lock with two keys (keys shall match state keying system). The Contractor shall give the keys to the Engineer when the project has been completed, tested, and accepted.
The photocell shall consist of an electronic control based on a side-mounted solid-state photo sensor and relay switch circuit. The photo cell shall be highly corrosion resistant without "plastic dipping". In addition, the photocell shall meet the requirements of UL 773. The "On-Off" switching operations shall be accomplished by a normally closed contact which will be operated by means of an electro-magnetic relay. The response time shall be less than a one second delay to turn on. The photocell shall be calibrated from the manufacturer to turn on at a value of 1.5 footcandle +/- 0.2 fc. The photocell shall not incorporate a screen or shield over the sensor. Turn-off response time shall incorporate a delay of at least three seconds, but not more than 30 seconds, calibrated to operate at 2.25 footcandle with a maximum off-on ratio of 1.5:1. If the photocell fails, the luminaires shall remain on as a notification of needed maintenance. Over voltage protection shall be provided for the control components and the load circuit by the means of an expulsion type surge arrester rated for 510 Joules and capable of passing surges as outlined in ANSI C136.10-2010. The base of the unit shall be manufactured on a solid thermoset phenolic base a minimum of 3 inches {75 mm} wide. The bottom of the base shall have an integral, locking type, brass 3 prong plug according to NEMA specification SH16-1962. The gasket shall be of a cross-linked polyethylene to assure moisture proof seal to the luminaire socket. The control must be able to operate over the range of 105-130V, 60 Hz. AC (120 V Nominal). Its direct load rating shall be 1000 watts tungsten load and 1800 VA. . The control shall be stable and reliable over an operating temperature range of -40 °F {-40 °C} to 158 °F {70 °C}. The photocell shall be provided with a minimum of a 6-year manufacturer’s warranty. ROADWAY LIGHTING MATERIALS 778
The surge arrestor shall be weatherproof. It shall be capable of withstanding a surge current of 50,000 Amps and a surge voltage of 550 Volts.
All feeders, branch circuits, and auxiliary and control circuits shall have overcurrent protection. The overcurrent protection shall be by means of circuit breakers. Circuit breakers shall be standard UL- listed, molded case, thermal-magnetic, bolt-on type, with trip-free indicating handles. Circuit breakers shall have a UL-listed interrupting rating of not less than 22,000 rms symmetrical amperes at rated circuit voltage for which the breaker is applied (unless otherwise noted on the drawings). Multi-pole circuit breakers larger than 100 ampere size shall have adjustable magnetic trip settings. The number of branch circuit breakers shall be as indicated on the Control Cabinet detail drawing or as indicated in the lighting system wiring diagram, whichever is greater, plus space for 2 spare circuit breakers. Circuit breakers shall be installed so that they will be in sequential order from left to right, top to bottom when the circuit breakers are viewed in the open cabinet. The sequential order shall be based on the identifying designation shown on the plans for each lighting circuit.
Contactors shall be electrically operated, mechanically held, as specified, with the number of poles required for the service and with operating coil voltage as indicated. Ampere rating of contactors shall be not less than required for the duty shown and shall otherwise be rated as indicated. Contactors shall be complete with a non-conducting inorganic, non-asbestos subpanel for mounting. Contactors shall be mechanically held and shall be complete with coil-clearing contacts to interrupt current through the coil once the contactor is held in position. The main contactor contacts shall be the double break, silver to silver type. They shall be spring-loaded and provide a wiping action when opening and closing. The contacts shall be renewable from the front panel, self-aligning, and protected by auxiliary arcing contacts. The line and load terminals shall be pressure type terminals of copper construction and of the proper size for the ampere rating of the contactor. A lever for manual operation shall be incorporated in the contactor. Protection from accidental contact with current-carrying parts when operating the contactor manually shall be provided. The contactor operating coil shall operate at 120 V AC, single phase. The number of lighting contactors shall be as indicated on the Control Cabinet detail drawing or as indicated in the lighting system wiring diagram, whichever is greater, plus space for 2 spare contactors. All contactors shall be connected to the conductors with the line side on top of the contactor and the load side on bottom.
Separate ground and neutral bus bars shall be provided. The ground bus bar shall be copper, mounted on the equipment panel, fitted with 22 connectors, minimum, of the type shown on the plans. The neutral bar shall be similar. The heads of connector screws shall be painted white for neutral bar connectors and green for ground bar connectors.
The cabinet shall have an auxiliary device circuit at 120 V AC, single phase, to supply a ground fault interrupting, duplex convenience receptacle, a cabinet light and photocell for the lighting system. The 120 V, single phase AC power shall be provided by a NEMA 3R rated dry type, 480:240/120 Volt-AC step-down transformer, not less than 2 kVA, which shall be mounted on the 12-gauge steel interior panel in the cabinet. The auxiliary device circuit, including transformer primary and secondary, shall have overcurrent protection according to NEC requirements. The cabinet light shall be a surface mounted fixture with protected lamp cover directly connected to a door actuated switch. The receptacle shall be a 20 A, ground fault interrupting, duplex receptacle, in a weatherproof box with appropriate cover. The light shall be either fluorescent or LED with a minimum width of 15 inches and minimum output of 900 lumens at a color temperature of 4000K +/- 300K.
Power wiring within the cabinet shall be of the size specified for the corresponding service conductors and branch circuits and shall be rated RHH/RHW, 600 Volts-AC. Control and auxiliary circuit wiring shall be rated RHH/RHW or MTW with jacket, 600 Volts-AC. All power and control wiring shall be stranded copper. When the contract drawings do not specifically indicate assigned wire designations, the manufacturer shall assign wire designations and indicate them on the shop drawings. All switches, ROADWAY LIGHTING MATERIALS 779
controls and the like shall be identified both as to function and position (as applicable) by means of engraved 2-color nameplates attached with screws, or where nameplates are not possible in the judgment of the Engineer, by the use of cloth-backed adhesive labels as approved by the Engineer. The cabinet with all of its electrical components and parts shall be assembled in a neat orderly fashion. All of the electrical conductors shall be installed in a trim, neat, professional manner. The conductors shall be trained in straight horizontal and vertical directions and be parallel, and adjacent to other conductors. Conductors in common paths shall be tied together in a bundle to reduce the number of loose conductors.
The test switch (selector switch) shall be a standard duty maintained contact control station and shall have double break contacts rated for use on 120-volt AC. The switch shall be labeled “Manual”, “Off”, and “Auto”. Suitable accessories shall be provided for mounting the test switch in the lighting control cabinet.
The Contractor shall furnish and install a schematic diagram of the control center wiring for each lighting control cabinet. The schematic shall be overlaid with a 10-mil clear laminate and attached to the inside of the control cabinet door using double stick tape or other approved method. The maximum size of the schematic diagram shall be 11 inches by 17 inches.
889.08Roadway Luminaire Assembly
Luminaires shall be selected from the MSDSAR manual, List IV-6, ROADWAY LIGHTING. Luminaires shall produce a minimum lumen output at a maximum wattage as specified in the Lighting Performance Criteria schedule. Plans including a Lighting Design Criteria schedule showing luminaire models pre-approved for use in this project. Luminaires other than those shown on the plans may be proposed for use on this project so long as they are listed on the MSDSAR manual. These luminaires shall produce the lighting levels and ratios shown on the Lighting Design Criteria table in the plans. Luminaire light distribution classifications are as described in the AASHTO Lighting Design Guide publication.
The bottom outside of each luminaire shall be marked as shown on the plans or as directed by the Engineer with a permanent marking to provide an identification of the wattage of the luminaire. This designation shall be large enough so that it can easily be seen from the ground after the luminaire is installed. All luminaires shall have a die cast aluminum housing; a weather resistant gray finish coat applied to the housing unless otherwise stated; a precision formed aluminum reflector coated to prevent tarnish and corrosion; and a pressed borosilicate glass refractor to provide the IES lighting pattern indicated. All hinges, bolts, nuts, washers, screws and miscellaneous hardware shall be stainless steel. All luminaires shall have labels indicating it is suitable for use in wet locations, suitable for 40 C ambient temperatures, and suitable for -40 C starting.
The luminaire shall be an offset type roadway fixture specifically designed for roadway lighting. Support shall be by means of a nominal 2-inch {50.8 mm} knuckle fitter or trunnion yoke that allows the luminaire to be easily aimed in both a vertical and horizontal direction. The lamp socket shall be provided with a quick disconnect for removal of the reflector/socket assembly. All electrical control components shall be completely removable without tools. A terminal block shall be provided for connection to the power source. The luminaire shall be sunlight resistant, shall be provided with 600 V AC rated conductors, and shall be provided with seals and gaskets to prevent entry of contaminants.
The general requirements for a luminaire shall be modified as indicated herein for a segmented reflector luminaire only. The housing shall be square or round heavy gauge aluminum with a vinyl coating or equal means of corrosion protection. The tempered clear glass lens shall be gasketed and securely fastened. A gasketed cast aluminum slip fitter shall accept a 2.375 inch {60.33 mm} ROADWAY LIGHTING MATERIALS 780
O.D. pipe for mounting. The housing and slip fitter shall be substantially made to withstand the anticipated wind loads. The entire unit shall be UL listed as suitable for wet locations and sealed sufficiently to prevent the entrance of insects especially into the lens area. The luminaire optical assembly shall produce an asymmetrical, square, or rectangular pattern as required by its location. The pattern shall be field adjustable to provide maximum utilization. The HPS lamp shall mount in a vertical base position and produce a cutoff lighting pattern. The maximum candlepower at nadir for a 400 Watt HPS lamp shall be less than 1250. The angle of peak candlepower shall be between 63 and 68 degrees in the vertical plane. The ballast shall be easily removable for maintenance and all wiring shall terminate on a terminal strip. The luminaire shall be mounted as shown on the plans. The luminaire shall be designed for a high pressure sodium, clear lamp of the wattage specified in the plans. (c)Light Emitting Diode Luminaire. The housing shall be die cast aluminum with a weather resistant gray finish coat applied to the housing. The luminaire shall be provided with a hinged door assembly underneath the fixture. The door shall contain all of the electronic components with quick disconnect connectors. The luminaire shall be marked with a permanent indicator noting the luminaire model number, voltage requirement and wattage. Input supply wires should not need to be bent or re-routed around components to make the electrical terminations. Only copper wire shall be used to connect electronics within the fixture. No wire nuts shall be used within the luminaire assembly. The luminaire shall utilize heat sink fins that are integrally cast with the housing to maximize heat transfer and minimize thermal impacts of environmental conditions such as debris clogged fins. Thermal management must be passive with no fans or other mechanical devices. The luminaire shall have a minimum heat sink surface such that the LED manufacturer’s maximum junction temperature is not exceeded at maximum rated ambient temperature. All exposed hinges, bolts, nuts, washers, screws and miscellaneous hardware shall be stainless steel. All luminaires shall have labels indicating it is suitable for use in wet locations, suitable for 40 C ambient temperatures, and suitable for -40 C starting. The luminaire shall be designed for light-emitting diodes to be mounted on removable modular boards with quick disconnect connectors and mounted to heat sinks using screws. Thermal grease shall not be used. Each LED module shall be fitted with a non-removable lens or individual lenses may be used on each LED die. No additional lens shall be used for the luminaire. All LEDs shall provide the same optical pattern such that catastrophic failures of individual LEDs will not constitute a loss in the distribution pattern. The luminaire shall be protected by an integral surge protection device tested in accordance with ANSI/IEEE standard C62.4 for standard and optional waveforms defined in ANSI/IEEE C62.41.2 location category C (High) for 10 KV Basic Impulse Level (BIL). Both common and differential mode protection shall be provided. The failure mode of the surge protector shall be to turn the luminaire off. The protector shall be field replaceable in the event of failure and shall automatically reset after operation with no manual intervention required. Luminaires shall be provided with a 5-year manufacturer’s warranty covering replacement and repair of LEDs, drivers and paint finish. The warranty shall not be affected by opening the power door and accessing the electrical cavity. The manufacturer must have tested the luminaire model in a suitable testing program incorporating high heat, high humidity, thermal shock and vibration testing to ensure reliability and substantiate lifetime claims. Luminaire compliance and performance claims shall be independently certified by an approved U.S. Department of Energy National Voluntary Laboratory Accreditation Program (NVLAP) accredited laboratory in accordance with Illuminating Engineering Society of North America
according to the most current version of Illuminating Engineering Society of North America (IESNA) TM-21.
The ballast shall be capable of starting and operating one lamp of the indicated size from a 60Hz source at the proper voltage. The ballast shall be in full compliance with the lamp/ballast specifications from the lamp manufacturer. The igniter shall be a “Protected Starter” designed to remove the ballast from the circuit three to ten minutes after lamp fails to ignite; or, the igniter may be a type which ROADWAY LIGHTING MATERIALS 781
directs the voltage spike to the lamp without being circuited through the ballast windings. A cycling or extinguished lamp shall not adversely affect the igniter or ballast which shall have an expected life exceeding five years in normal use. The ballast design center shall not vary more than 5% from rated lamp watts for nominal line voltage and nominal lamp voltage. The lamp wattage regulation spread at any lamp voltage, from nominal through end of rated life, shall not exceed 35% for 10% line voltage variation. The ballast must reliably start and operate the lamp in ambient temperatures down to -40 C for the rated life of the lamp. The ballast primary current during starting must not exceed normal operating current. The ballast shall be capable of sustaining lamp operation with a line voltage dip or sag of 35% for up to 4 seconds when operating a nominal voltage lamp with nominal line voltage applied to the ballast primary. The line power factor of the lamp/ballast system shall not drop below 70% for 10% line voltage variations at any point in the lamp life.
The driver shall be capable of starting and operating the LED modules of the indicated size from a 60Hz ±3 Hz source at the designed voltage ±5%. The driver output shall not vary more than 5% from rated output watts for nominal line voltage and nominal lamp voltage. Driver shall have a minimum power factor of 90% and a maximum Total Harmonic Distortion (THD) of 20% at full power output. The operating frequency should be high enough to avoid visible flicker in the light output. The driver shall be UL certified for use in dry or damp locations. Driver life expectancy shall be 50,000 hours at 80 C and 100,000 hours at 70 C. The driver will not be adversely affected by the cycling or failure of one or more LED modules during the life of the driver. The driver must reliably start and operate the lamp in ambient temperatures from -40 C to 40 C for the rated life of the lamp. The driver shall be capable of sustaining LED operation with a line voltage dip or sag of 35% for up to 4 seconds.
Each luminaire shall have a clear high pressure sodium (HPS) lamp of the required wattage installed. Average lamp life shall be 24,000 hours. Initial lumen output shall be: 70 Watts - 5,800 lumens 400 Watts - 50,000 lumens 100 Watts - 9,500 lumens 600 Watts - 92,000 lumens 150 Watts - 16,000 lumens 250 Watts - 28,000 lumens
Each LED should be rated for a minimum operational life of 100,000 hours at 25 C and comply with IESNA L-85 standards after 50,000 hours of operation at 25 C ambient temperature. Photometry must be in compliance with IESNA LM-79 when operating at an ambient temperature of 25 C. The LED module shall lose no more than % optical intensity when operating at 40 C than its initial delivered lumens at 25 C. All LED modules shall be constructed so that the failure of one LED will not result in the loss of the entire luminaire and so that modules can be replaced without replacing the entire luminaire. Each LED die or the LED module should be enclosed in a non-removable transparent lens of either glass or acrylic. The LED module shall produce a nominal correlated color temperature of 4000K ±275K with a color rendering index of at least 70 and a minimum output of 100 lumens per watt efficacy.
The details of the luminaire poles and foundations are shown on the plans. Additional requirements are given in Sections 718 and 891.
A frangible base that meets the requirements given in NCHRP 350 shall be installed on each luminaire assembly when shown on the plans. Breakaway Couplings will be allowed if shown on the plans. The Contractor shall assure the compatibility of the pole base, breakaway support, and foundation. ROADWAY LIGHTING MATERIALS 782
889.09High Mast Luminaire Assembly
High Mast luminaires shall be selected from the MSDSAR manual, List IV-6, ROADWAY LIGHTING. Luminaires shall produce a minimum lumen output at a maximum wattage as specified in the Lighting Performance Criteria schedule. Plans including a Lighting Design Criteria schedule show luminaire models pre-approved for use in this project. Luminaires other than those shown on the plans may be proposed for use on this project so long as they are listed on the MSDSAR manual list. These luminaires shall produce the lighting levels and ratios shown on the Lighting Design Criteria table in the plans. Luminaire light distribution classifications are as described in the AASHTO Lighting Design Guide publication.
The lighting distribution requirements for a high mast luminaire shall be the same as those given for a roadway luminaire. Each high mast luminaire shall consist of cast aluminum housing, built in ballast and a one piece reflector assembly. The housing shall contain a slip fitter for a 2-inch {50.8 mm} horizontal pipe tenon which allows adjustment for leveling. All ballast components shall be accessible from the top with the luminaire mounted and aimed. The ballast shall be pre-wired to a terminal block using quick disconnect fittings. The luminaire and ballast shall be from the same manufacturer. The optical assembly reflector shall be borosilicate glass encased within a spun on, sealed aluminum cover or a formed aluminum reflector with a chemically bonded lightweight non-breakable 95% silica glass finish. The reflector shall be designed to direct light away from the lamp arc tube. The lamp shall operate in the vertical base up position. If an enclosed and filtered optical assembly is shown to be required on the plans it shall include a hinged lens ring and a heat/impact-resistant flat glass lens held in place by four spring clamps. The luminaire shall provide the ANSI/IES type distribution as required by the plans and have a minimum efficiency of 69% of base lamp lumens in the 0-90 degree zone. Lamps shall be the same as those required for a Roadway Luminaire Assembly. The performance requirements for ballast shall be those given for a Roadway Luminaire Assembly.
The requirements for a light emitting diode high mast luminaire shall be the same as those for a light emitting diode roadway luminaires. The housing shall contain a slip fitter for a 2-inch {50.8 mm} horizontal pipe tenon which allows adjustment for leveling. All drivers and internal components shall be accessible from the top with the luminaire mounted and aimed. The driver shall be pre-wired to a terminal block using quick disconnect fittings. The requirements for high mast light emitting diodes shall be the same as those required for roadway light emitting diodes. The requirements for light emitting diode high mast drivers shall be the same as those given for a light emitting diode driver.
Any lowering device proposed for use shall have been proven reliable by satisfactorily performing its function. Failure to operate properly or undue maintenance costs history in previous installations shall be grounds for disqualification of a particular product. Upon request, a list of up to ten installations, locations, and telephone numbers of persons to contact to verify this shall be provided. Any delays in the project schedule due to meeting these requirements shall be the responsibility of the Contractor.
Each high mast luminaire assembly shall be furnished with a lowering device, suitable for lowering a luminaire mounting ring, which will allow the complete luminaire and associated electrical and mechanical apparatus to be serviced from not more than 5 feet {1.52 m} above the base plate. The luminaire mounting ring shall be raised and lowered by multiple stainless steel wire rope cables each of which shall be capable of supporting the entire mounting ring assembly under design wind loading conditions. The wire rope cables shall be stainless steel with each cable having at least 7 strands of 19 wires. The power feed conductors shall be terminated in an aluminum or stainless steel NEMA 4 junction box using strain relief conductor clamps. "Kellums" type grips are not acceptable. The luminaire ring shall provide a totally enclosed wireway in which to route the conductors to each
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