725 LIGHTING AND ELECTRICAL MATERIALS

725.00 General. Furnish lighting and electrical materials conforming to the following inspection and certification requirements:

A. Inspection. Perform inspection of lighting and electrical materials at the project site. The inspection includes, but is not limited to the identification of the item, type, size, manufacturer’s markings, and documentation of these data. When required by the Laboratory, select random samples from the material delivered or at the place of manufacture or warehouse before delivery.

B. Certification. When required by the Laboratory, furnish certified test data.

In the case of light poles and light towers, furnish the certified test data in triplicate covering the specified requirements for all materials incorporated in the poles, towers, accessories, and the results obtained from the deflection tests to the Laboratory.

A. Scope. These Specifications cover materials and manufacturing methods used in the fabrication of light poles that support luminaires at heights of less than 70 feet (20 m) above the foundation. Furnish aluminum or steel material acceptable to the AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals. Furnish pole designs that conform to minimum requirements of the AASHTO specifications cited, except base the design wind load on a wind speed of 90 miles per hour (145 km/h).

1. Ensure that there is not more than one longitudinal, automatically electrically welded seam and no transverse seams or welds, except as permitted hereinafter. Ensure that the longitudinal welded seam is neat and uniform in appearance, the weld is not less than the thickness of the base material, and the bead height does not exceed 1/16 inch (2 mm). Ensure that the wall is of uniform thickness throughout, except at the weld bead. Ensure that the cross-section of the shaft is circular, or multisided with no less than eight sides, and the diameters or cross-sectional dimensions, measured at any point along the longitudinal axis, do not vary from each other more than 3/16 inch (5 mm). Poles may consist of not more than two vertical shafts joined by overlapping the sections at least 1 1/2 diameters of the bottom of top section, and by use of a 5/8-inch minimum stainless steel hex head through bolt. Ensure that the minimum length for the shorter section of a two piece shaft is 10 feet (3 m) with the shortest section being the top section.

3. Ensure that the shafts for aluminum poles are tapered tubes either spun or cold rolled. Ensure that the shaft has a true continuous taper except for the top and bottom sections, which may be straight. Ensure that no more than 40 percent of the total shaft length is straight.

4. Ensure that the average rate of shaft taper including straight portions of the shaft is between 0.06 and 0.16 inches per foot (5.0 and 13.3 mm/m).

5. Ensure that the deflection of the unloaded shaft from the vertical position when placed under load by attachment of the bracket arm, luminaire weighing 75 pounds (34 kg) and lamp does not exceed an angle of 1 degree and 10 minutes when tested according to Supplement 1025.

6. On poles equipped with tubular sleeve supports for bracket arms, ensure that the sleeve passes through a hole in the shaft and is made an integral part of the shaft by means of circumferential welds where sleeve and shaft join. Ensure that the sleeve extends from the shaft sufficiently to insure stability of the connection.

7. Furnish fittings as detailed on the plans and the approved shop drawings. Furnish stainless steel fasteners, washers, shims, nuts, and bolts, unless otherwise specified, conforming to ASTM A 320/A 320M (AISI 300 series), galvanized steel conforming to 711.02, or silicon bronze conforming to ASTM B 98 (B 98M). Furnish non-structural castings for aluminum poles, including the shaft cap and transformer base door, conforming to ASTM B 26/B 26M or B 108, Alloy S 5 A, Condition F.

1. Furnish one-piece cast steel anchor bases for steel poles conforming to 711.07 or steel plate conforming to 711.01. Weld the anchor bases to the pole shaft both inside and outside with fillet welds equal to the wall thickness, or by AWS pre-qualified welding joints TC U4a-S or TC U4c-GF.

2. Furnish one-piece cast aluminum anchor bases for aluminum poles conforming to ASTM B 26/B 26M or B 108, Alloy 356.0, Temper T6. Secure the anchor bases to the lower end of the shaft and ensure that the base telescopes over the shaft. When a welded connection is used, two continuous welds are required with one weld at the lower end of the shaft and the other weld at the top of the base. Ensure that the two welds are at least 1 1/2 inches (38 mm) apart. Ensure that the base connection develops the full design strength of the adjacent shaft section in bending.

D. Transformer Type Bases. Fabricate transformer type bases from steel or aluminum according to the following:

1. Ensure that steel transformer bases designated on the plans by Styles ST-A, ST-B, and ST-C, meet the dimensional requirements of plans and approved shop drawings. Fabricate the steel transformer bases from steel conforming to ASTM A36/A 36M. Fabricate the doors so that they will fit flush with the face of the base and are permanently attached by means of a top-mounted continuous stainless steel hinge. One-pass weld the pole bases onto the median barrier, unless otherwise noted.

2. Furnish aluminum transformer bases designated on the plans by Styles AT-A, and AT-C that meet the dimensional requirements of the plans and approved shop drawings. Furnish a base capable of transmitting the design dead, live, ice, and wind loads of the light pole mounted on it to the foundation without failure or permanent deformation. Furnish aluminum transformer bases that comply with the frangibility requirements specified in the AASHTO Standard Specifications for Structural Support for Highway Signs, Luminaires and Traffic Signals.

Permanently mark the aluminum transformer bases for exterior identification. Fabricate the doors so that they will fit flush with the face of the base, and shall be permanently attached by means of a top-mounted, continuous, stainless steel hinge. Latch the door by means of a tamperproof, quarter-turn latch.

3. Fasten the transformer base to the shaft anchor base by means of four heavy hex head bolts and nuts conforming to ASTM A 307 that are galvanized according to 711.02. When aluminum transformer bases are used with non-galvanized steel anchor base poles, coat or paint both the bottom of the steel anchor base and the top of the aluminum transformer base with a heavy film of zinc rich paint.

E. Steel Anchor Bolts and Nuts. Furnish steel anchor bolts with 55,000 pounds per square inch (380 MPa) (minimum) yield strength. Furnish threaded ends of the bolts and nuts that are galvanized according to 711.02. Ensure that the galvanizing extends at least 2 inches (50 mm) beyond the threads. Furnish anchor bolts with nuts capable of developing the full strength of the anchor bolt.

1. Dimension and detail the bracket plates and other fittings as shown on the plans, the standard construction drawings, and the approved shop drawings. Ensure that the arms meet the following requirements:

a.      The arms are not less than 2-inch (50 mm) nominal pipe size material.
b.      The longitudinal axis of the luminaire end is canted at least 1 degree but not more than 4 degrees above the horizontal.
c.      The internal raceway of 1 3/32 inches (28 mm) minimum I.D. is free of projections and obstructions, which, when assembled to the shaft, will permit installation of luminaire supply conductors without insulation damage and with a minimum radius bend of conductors of 3 inches (75 mm).
d.      A 2-inch (50 mm) nominal pipe size slipfitter has an end with a minimum length of 8 inches (200 mm) to receive a slipfitter-mounted luminaire.

Furnish bracket arm members formed of straight or tapered stock made from a round or ovaliptic cross-section. Except for poles equipped with tubular sleeve supports, ensure that the bracket arm assembly for arms 8 feet (2.4 m) or longer consist of an upper and lower member securely joined by means of a vertical strut or struts.

2. Furnish steel bracket arms supported on a circular, tapered stud, integral with the pole shaft, from a one or two-piece round tapered sleeve. Ensure that the bracket arm is securely held within the sleeve by means of a 5/8-inch (16 mm) machine bolt extending diametrically through both bracket arm and sleeve. Use a hex head nut and lock type washer to secure the bolt.

3. Ensure that the shaft end of each aluminum bracket arm member has a cast, wrought, or extruded aluminum fitting welded to it for attaching to the shaft.

1. Weld steel as required by 513.21.
2. Ensure that the fabrication and welding of aluminum poles and bracket arms conform to the requirements of AWS D1.2 Structural Welding Code - Aluminum.

H. Finishing. Furnish steel poles, except stainless, that are hot dipped galvanized after fabrication in according to 711.02.

Furnish aluminum poles in matching natural aluminum color. Furnish pole shafts with a polished or satin-brushed surface. Wrap shaft and bracket arm assembly with a heavy water-resistant paper or otherwise ensure they are suitably protected during shipment and installation. Do not remove the wrapping until after complete installation.

I. Tests. The Director may base the approval of poles on complete testing, including destructive testing at the factory before delivery. Ensure that the tests are supervised by a representative of the Department and are performed on poles selected at random from a lot produced for the Department. Approval of subsequently produced poles is generally based on Departmental evaluation of mill tests and factory certified test results on the materials and fabricated components.

A. This specification consists of insulated conductor cables used for four classes of service; namely, 300-volt, 600-volt, 5000-volt, and 15,000-volt. Furnish cable that meets the requirements of ICEA S-66-524. Coding to identify a neutral conductor is acceptable.

B. Furnish cable used for 300-volt, 600-volt, or 5000-volt (secondary class) service in the size specified, non-jacketed, single conductor, stranded copper having an unshielded chemically cross-linked polyethylene insulation and that meet the following requirements.

The cable meets the requirements of UL Type RHH-RHW-USE. However, UL Type XHHW may be used for cable No. 10 AWG and smaller.

C. Furnish 5000-volt cable used for 600-volt (secondary class) service in the size specified, single conductor, stranded copper having an unshielded, chemically cross-linked polyethylene insulation, and that meets the requirements of UL Type MV-90 dry.

D. Furnish cable used for 5000-volt and 15,000-volt (primary class) service in the size specified, stranded copper or aluminum, and, as shown on the plans, in either of the following types:

1. Furnish primary underground residential distribution cable with concentric neutral and complying with ICEAS-66-524, Part 7.1.

2. Furnish separate primary and neutral standard shielded cables. Ensure that the separate neutral conductor has the same characteristics, composition, and conductivity as its companion power conductor, except for possible color-coding.

A. Scope. This specification consists of a factory pre-assembled cable in a coilable, high density polyethylene pipe type duct providing the number and size of insulated conductors, which are specified. Ensure that the number of conductors used in the duct and the duct fill conform to the requirements of the National Electrical Code, but in no case provide ducts with the inside diameter of less than 1 1/2 inches (38 mm).

B. Conductors and Neutrals. Furnish cables used as conductors and neutrals that conform to 725.02.

C. Polyethylene Duct. Furnish duct that conforms to NEMA TC-7. Include the manufacturer’s name and the year of manufacture in the marking. Furnish a duct made of high density polyethylene, Type III, Class C, Category 5, Grade 34.

725.04 Rigid Ferrous Metal Electrical Conduit and Fittings. Furnish galvanized steel conduit that complies with the requirements of ANSI C 80.1 and UL 6 Type I. Ensure that each length of conduit bears the UL label. Furnish fittings furnished conforming to ANSI/NEMA FB1 and ANSI/UL 514B.

725.05 Polyvinyl Chloride Conduit and Fittings. This specification covers PVC conduit, Type DB for direct burial without concrete encasement, and the Type EB for encased burial in concrete. Furnish PVC conduit and fittings, of the size and type specified, that conforms to NEMA Standards Publication No. TC-2 or TC-6.

725.07 Plastic Pull Box. Furnish plastic pull boxes and covers made of high density ultraviolet stabilized polyethylene or polycarbonate, or fiber reinforced resin or foamed moldings, adequately reinforced and with a box wall thickness of at least 1/4 inch (6 mm). Openings may be round or square; or oval or rectangular if the ratio of major to minor axis does not exceed 2.0. Achieve box depth by extensions or stacking. Furnish covers that are slip resistant and that bear the word “ELECTRIC,” “TRAFFIC,” or the initial letter of the word. Ensure that the covers fit tightly and are secured by stainless steel hardware. Ensure the box and cover conform to the structural requirements of Western Underground Committee Guide 3.6.

A. Pull Box. Construct and install concrete pull boxes as shown on the plans.
B. Covers. Construct and install pull box covers as shown on the plans, and ensure that the word “ELECTRIC,” “TRAFFIC,” or “TELEPHONE,” is formed on the surface or displayed on an attached metal plate according to 725.09.

A. Pull Box. Fabricate circular corrugated metal pull boxes from 0.059-inch (1.5 mm) minimum galvanized steel with a 20-mil (0.5 mm) minimum coating of asphalt on each side, 18 or 24 inches (450 or 600 mm) in diameter and 30 inches (0.75 m) long, helically corrugated pipe sections. Ensure that the bottom end has three 4 ´ 10-inch (100 ´ 250 mm) slots with the 10-inch (250 mm) dimensions parallel to the long axis of the box and space the centerlines of the slots 90 degrees apart. Field cutting of slots is allowed, subject to project requirements, and provided restoration or protection of damaged coatings acceptable to the Engineer is made.

B. Covers. Furnish metal pull box covers that conform to following requirements:

1. Furnish 1/4-inch (6 mm) thick steel plate conforming to 711.01 with 1/2-inch (13 mm) minimum flange around the edge and galvanized to conform to 711.02.

Ensure that each steel plate cover has a brass or stainless steel plate approximately 1/32 inch (1 mm) thick and not less than 2 inches (50 mm) wide by 10 inches (250 mm) long with the word “ELECTRIC,” “TRAFFIC,” or “TELEPHONE” etched, engraved, or die-stamped thereon in letters approximately 5/8 inches (16 mm) wide by 1 1/4 inches (32 mm) high, riveted, or otherwise permanently attached to the steel plate cover.

2. Furnish gray iron or ductile iron with a minimum thickness of 3/8 inch (9 mm) conforming to ASTM A 48 or ASTM 536. Certification is required. Ensure that the word “ELECTRIC,” “TRAFFIC,” or “TELEPHONE” is cast in the top surface of the cover forming letters 1 to 2 inches (25 to 50 mm) in height.

C. Grade Adjustment Extensions. If specified on the plans, furnish and install grade adjustment extensions, made from corrugated and coated metal of the same material as specified in 725.09.A. Furnish an extension section that has an inside diameter of such size as to allow the corrugation to mesh with those of the outside diameter of the pull box, thereby forming a screw type vertical adjustment between the two pipe sections. Ensure that the extension and pull box sections overlap each other a minimum of 4 inches (100 mm).

A. Scope. This specification covers junction boxes of the size and types shown on the plans.

B. Composition. Furnish iron casting junction boxes that are hot-dip galvanized according to 711.02.

1. Furnish NEMA ICS-6 Type 4 junction boxes of the size specified and that meet UL 50 requirements.
2. Furnish conduit entrances as shown on the plans.

A. Scope. This specification covers pole-bracket-arm mounted luminaires for high intensity discharge lamps. Ensure that the luminaire is a complete lighting device, consisting of a housing, lamp, support clamp, reflector, refractor, socket, integral ballast or separate ballast when specified and terminal block. Furnish a luminaire that is capable of operating the lamp in a completely sealed optical assembly at the line voltage specified. Ensure that the luminaire provides the ANSI-IES Type distribution and cut-off specified.

Supply the luminaire with a label or decal indicating the type of source and wattage rating. With the luminaire installed in its normal operating position, ensure that the label or decal is clearly legible in daylight at a distance of 50 feet (15 m). Furnish labeling according to the provisions of NEMA Publication No. OD-150 or EEI Publication No. TDJ-150.

Determine the use of the small, medium, or large size luminaire by the initial lamp lumen rating of the specified lamp type as follows:

1.      Do not use the small horizontal Style A luminaire for lamps rated over 16,000 lumens.
2.      Do not use the medium horizontal Style B luminaire for lamps rated over 37,000 lumens.
3.      Do not use the large horizontal Style C luminaire for lamps rated over 55,000 lumens.

1. Housing. Furnish an housing of cast aluminum with natural finish or a painted finish using aluminum or a light gray color paint. Ensure that the housing contains and supports the reflector, refractor, socket, ballast, terminal block, and support clamp. Make provision for leveling to adjust the luminaire to the specified transverse and longitudinal position with respect to the roadway.

Equip the luminaire with a device indicating the direction and amount of tilt over a range of 0 to 5 degrees in any direction. Furnish a level indicator containing three major calibrations, which are accurate within 1/2 degree. Ensure that the calibrations are approximately as follows:

Furnish an indicating device that is clearly discernible in daylight from a distance of 50 feet (15 m) and that in no way alters or reduces the amount of light from the luminaire. Construct the indicating device from a transparent container having one horizontal surface that is curvilinear in any vertical cross-section for supporting an indicator and a damping fluid. Furnish a liquid damping fluid that is suitable for operation at -40 °F (-40 °C). Fabricate the transparent container from clear ultraviolet-inhibited acrylic or similar material.

2. Refractor Retaining Ring. Securely latch and hinge the refractor retaining ring with non-corrodible material that is operable and removable without the use of tools. Ensure that the assembly provides a weatherproof enclosure for the optical system.

3. Support Clamp. Furnish a slip-fitter type support clamp that is adaptable to 1 1/4 or 2-inch (32 or 50 mm) mounting bracket. Furnish a stop to allow an engagement of at least 4 1/2 inches (115 mm) of the bracket arm. Make provisions to adjust and hold the luminaire in its specified vertical and horizontal position.

4. Reflector. Fabricate the reflector of an approved specular polished aluminum reflective surface. Ensure that the reflector is held firmly in the housing, but is easily removed without the use of special tools. Use Silicone rubber, ethylene propylene terpolymer, or dacron felt gaskets or approved equal to seal the optical assembly at the socket entry and between the refractor and reflector to make a dust tight optical system. Ensure that the reflector is clean and free from scratches.

5. Refractor-Glass. Furnish a refractor made from heat resistant borosilicate glass that has prisms on the inside and on the outside to provide the ANSI-IES type distribution and cutoff as specified and is free of striations and imperfections. Ensure that the refractor is embossed to clearly indicate the street side and curb side prisms. Securely fasten the refractor to the holder, but ensure that it is easily removed. Ensure that the refractor, reflector assembly meets the specified ANSI-IES distribution and cutoff. Furnish complete photometric data for every combination of each assembly.

6. Socket. Furnish sockets with a mogul screw shell with large center contact spring providing a firm contact with the lamp base. Ensure that the socket shell has lamp grips to prevent the lamp from loosening. The shell may be of the skeleton type or shrouded in porcelain. Ensure that the contacts are identifiable. Furnish socket extension adaptors for special applications. Ensure that the luminaires providing various ANSI-IES types of distribution by socket adjustment also include a means of identification to associate each lamp position with each distribution type. Ensure that the socket adjustment provides positive positionings by means of index holes, lugs, or notches. The Department will not accept slots with infinite settings.

a. Furnish mercury ballasts that have a high power factor, constant wattage type, and is rated to the circuit voltage and size of lamp specified. Furnish a ballast that starts the lamp at temperatures as low as -20 °F (-29 °C) and delivers rated lamp current at circuit voltage variation of ±10 percent. Ensure that the regulation output of lamp wattage does not exceed a total range of ±5 percent.

b. Furnish metal halide ballasts that have a high power factor, peak load auto-regulator type rated to the circuit voltage and size of lamp specified. Furnish a ballast that starts the lamp at temperatures as low as -20 °F (-29 °C) and delivers rated lamp watts within ±10 percent with ±10 percent variation in applied voltage.

c. Furnish high pressure sodium ballasts for lamps through 400 watts that have a high power factor, regulator type with isolated primary and secondary windings and is rated to the circuit voltage and size of lamp specified. Furnish ballasts for 1000-watt high pressure sodium lamps that have a high power factor, auto-regulator type rated to the circuit voltage specified. Ensure that the ballast starts the lamp at temperatures as low as -20 °F (-29 °C) and delivers rated lamp current at circuit voltage variations of ±10 percent. Complete all ballasts with starter components.

Furnish starter components comprised of solid state devices capable of withstanding ambient temperatures of 212 °F (100 °C). Ensure that the starter provides timed pulsing with sufficient follow through current to completely ionize and start all lamps that meet published ANSI standards. Furnish a field replaceable and completely interchangeable starter component with no adjustment necessary for proper operation. Ensure that it has push-on type electrical terminations to provide good electrical and mechanical integrity and ease of replacement. Treat the starter circuit board in an approved manner to provide a water and contaminant resistant coating.

Design the starting circuit-ballast combination to consistently provide the following parameters:

(1) Maintain lamp wattage within the trapezoid recommended by lamp manufacturers within the full rated input voltage range.

(2) Ensure that the amplitude of the pulse is 2500 volts minimum and 4000 volts maximum. Operation of the pulse at spike voltage levels near minimum is desirable.

(3) Ensure that the minimum pulse width is 1 microsecond at 2250 volts, and is applied within 20 electrical degrees of the peak of the open circuit voltage wave, and has a minimum repetition rate of one pulse per cycle of the 60 cycle wave.

(4) Ensure that pulses are present when ballast is correctly wired and nominal voltage less 15 percent is applied to the ballast windings.

(5) Furnish high pressure sodium ballast, including starting aids, that protects itself against normal lamp failure modes. Ensure that the ballast is capable of operation with the lamp in an open or short circuit condition for 6 months without significant loss of ballast life.

Ensure that the luminaire manufacturer supplies ballast electrical data and lamp operating volt-watt traces for nominal and ±10 percent rated line voltage to verify ballast performance and compliance with ANSI lamp specifications, for the rated life of the lamp.

d. Furnish low pressure sodium ballast that has a high power factor corrected (90 percent minimum) reactor type rated to the circuit voltage and size of lamp specified. Ensure that the ballast starts the lamp at temperatures as low as -20 °F (-29 °C) and delivers rated lamp current at circuit voltage variations of ±10 percent. Ensure that the wattage regulation does not exceed a range of -5 to +3 percent for lamps rated at 90 watts or more.

8. Glare Shields. Furnish glare shields of aluminum or opaque plastic material when specified. Obtain a shield from the manufacturer of the luminaire. Ensure that the glare shield cuts off the upward component of light, but does not reduce the total output of the luminaire more than 3 percent.

A. Scope. This specification covers luminaires for mounting in underpasses. Furnish luminaires consisting of a complete lighting device, with a housing, reflector, lamp, shrouded porcelain socket, refractor, door, integral ballast conforming to the requirements of 725.11, and fuse holder with fuse. Furnish a pre-wired assembly that is weatherproof and sealed against dust.

1. Furnish a high pressure sodium fixture that consists of a cast aluminum housing and door frame assembly containing a thermal shock resistant glass refractor attached to the frame with stainless steel latch and hinges. Protect the glass refractor by an approved guard or shield.

2. Furnish a low pressure sodium fixture that consists of a cast aluminum rear mounting plate with a one-piece luminaire housing and refractor molded of a polycarbonate material with integral prismatic design for proper beam control. Furnish a one-piece housing that is hinged and secured to the rear mounting plate.

A. Scope. This specification covers mercury, metal halide, high pressure sodium, low pressure sodium, incandescent, and fluorescent lamps for use in luminaires. Furnish lamps that are the type and wattage specified. Ensure that each lamp is provided with a date recording feature.

1. Furnish mercury lamps for use in the luminaire specified that are first line, high quality lamps having heat resistant clear glass envelopes with a quartz arc tube interior. Ensure that the horizontal initial lumens and approximate hours of life are not less than those values shown in Table 725.14-1.

Table 725.14-1
ANSI	Watts	Horizontal Initial Lumens	Economic Life Hours
H38HT	100	3,900	16,000
H39KB	175	6,950	16,000
H37KB	250	10,500	16,000
H33CD	400	19,200	16,000
H35NA	700	34,600	16,000
H36GV	1,000	53,000	16,000

2. Ensure that the lumen output of the mercury lamps after 12,000 hours use produce a minimum of 78 percent of its initial lumen rating.

1. Furnish high pressure sodium lamps for use in the luminaire specified that are first line, high quality lamps having heat resistant clear glass envelopes with a ceramic arc tube interior. Ensure that the horizontal initial lumens and approximate hours of life are not less than the values shown in Table 725.14-2.

Table 725.14-2
ANSI	Watts	Horizontal Initial Lumens	Economic Life Hours
S62	70	5,800	14,000
S54	100	9,500	14,000
S56	150	16,000	16,000
S66	200	22,000	16,000
S50	250	27,500	16,000
S67	310	37,000	16,000
S51	400	50,000	16,000
S52	1,000	130,000	16,000

2. Ensure that the lumen output at the end of economic life is not less than 80 percent of the initial lumen rating.

1. Furnish metal halide lamps for use in the luminaire specified that are first line, high quality lamps having heat resistant clear glass envelopes with a quartz arc tube interior. Ensure that the horizontal initial lumens and approximate hours of life are not less than those values shown in Table 725.14-3.

Table 725.14-3
ANSI	Watts	Horizontal Initial Lumens	Economic Life Hours
M57	175	14,000	4,000
M58	250	18,000	4,000
M59	400	32,000	10,000
M47	1,000	95,000	7,500

2. Ensure that the lumen output at the end of economic life is not less than 65 percent of the initial lumen rating.

E. Low Pressure Sodium Lamps. Furnish low pressure sodium lamps for use in the luminaire specified that are first line, high quality lamps, with a sodium resistant discharge tube contained in a clear glass envelope. Ensure that the initial lumens and approximate hours of life are not less than those values shown in Table 725.14-4:

Table 725.14-4
Watts	Initial Lumens	Economic Life Hours
35	4,000	16,000
55	8,000	16,000
90	13,500	16,000
135	22,500	16,000
180	33,000	16,000

F. Incandescent Lamps. Furnish incandescent lamps of the size, type, and wattage specified conforming to Federal Specification W-L-101.

G. Fluorescent Lamps. Furnish fluorescent lamps of the size, type, and wattage specified conforming to Federal Specification W-L-116.

A. Scope. This specification covers cable connecting devices, including connectors, connector kits, cable splicing kits, and in-the-line type fuse holder kits. Ensure that all devices are rated for minimum 600-volt service.

B. Cable Connectors. Furnish cable connector types that are applied to the conductor by means of a compression tool and are capable of fully enclosing the conductors upon which they are compressed according to the manufacturer’s instructions. Furnish connectors that are fabricated from high-strength copper alloy. The Department will not accept plated connectors fabricated from metals other than copper.

Furnish style “C” cable connectors that are the splicing sleeve type that consists of a crimpable plated copper sleeve with a thin metal wall or “stop” in the barrel centered between each sleeve end so the sleeve encloses equal lengths of the two conductors being spliced end-to-end. The barrel of the sleeve is manufactured to fit specific ranges of conductor size. Follow the manufacturer’s instructions.

C. Cable Connector Kits. Furnish each cable connector kit with all component parts described under the various listed types and ensure that each kit contains the following:

1. Sufficient silicone compound to lubricate metal parts and the housing for each assembly.
2. Complete installation instructions.

3.      Furnish housings made of water-resistant synthetic rubber suitable for burial in the ground or exposure to sunlight. Ensure that each housing forms a water-seal around the cable, between each other housing at the point of disconnection and between an insert body and enveloping “Y” housing.
4.      Furnish copper pins, sockets, and fuse contacts that have a minimum conductivity of 90 percent. Ensure that they are made of at least half hard material and the crimpable portion is fully annealed while the rest of the device is maintained in its original state of hardness.
5.      Maintain contact pressure between a pin and a socket by the use of an approved socket spring.
6.      Where a mounting hole is provided for fastening terminal lugs to a ring-tongue terminal fasten them with a bolt and self-locking nut.
7.      Furnish plastic sleeves that are rigid, molded insulating plastic material of sufficient outside diameter to form a water-tight fit with its related housing. Ensure that the wall thickness is 0.10 inch (2.5 mm) maximum and sleeve lengths are as required.
8.      Ensure that all fuses are for rated 600-volts, 100,000 amperes RMS interrupting capacity.

1. Type II. Fused, Quick Disconnect Y Connector Kit. Furnish each Type II kit containing:

a.      A pair of spring loaded copper fuse contacts suitable for gripping the specified cartridge fuse. One contact is crimpable on a conductor and after insertion into its proper position within the load-side plug housing is capable of being securely retained therein. The other contact is pre-assembled for retention within a Y insert body.
b.      A line-side Y housing with two cable ports.
c.      Two terminal lugs, each having a mounting hole.
d.      A bolt and self-locking nut.
e.      A Y insert body with pre-assembled line side fuse contact and a ring tongue terminal.
f.       A load-side plug housing permanently marked “load-side.”
g.      A fuse of specified ampere rating.

2. Type III. Unfused, Quick Disconnect Y Connector Kit. Furnish each Type III kit containing:

a.      A copper pin crimpable to a conductor and suitable for retention in the load-side receptacle housing.
b.      A Y insert body with pre-assembled load-side copper socket and ring-tongue terminal.
c.      A line-side Y housing with two cable ports.
d.      Two terminal lugs, each having a mounting hole.
e.      A bolt and self-locking nut.
f.       A load-side receptacle housing.

3. Type IV. Semi-permanent Y Cable Connector Kit. Furnish each Type IV kit containing:

a.      A ring-tongue terminal crimpable to a conductor.
b.      Two terminal lugs, each having a mounting hole.
c.      A bolt and self-locking nut.
d.      A line-side Y housing with two cable ports.
e.      A load-side insert body with one cable port.

4. Type V. Unfused In-line Connector Kit for Junction Box Installation. Furnish each Type V kit containing:

a.      A copper pin crimpable to a conductor and suitable for retention in the receptacle housing.
b.      A copper socket crimpable to a conductor and suitable for retention in the plug housing.
c.      A receptacle housing.
d.      A plug housing.

5. Type VI. Fused In-Line Connector Kit for Junction Box Installation. Furnish each Type VI kit containing:

a.      A pair of spring loaded copper fuse contacts, both crimpable to conductors and suitable for gripping the specified cartridge fuse. Both contacts are capable of being securely retained in their housings.
b.      A plug housing.
c.      A receptacle housing.

6. Type VII. Splice Insulating Kit. Type VII kits are classified as follows:

a.      Type VII A kit consisting of: two identical housings, each having single cable port, one plastic sleeve, one Style “C” cable connector.
b.      Type VII B kit consisting of: one housing having a single cable port, one housing having a twin cable port, one plastic sleeve, two Style “C” cable connectors.
c.      Type VII C kit consisting of: two identical housings, each having a twin cable port, one plastic sleeve, three Style “C” cable connectors.

D. In-the-Line Type Fuseholder Kits. Furnish each in-the-line type fuseholder kit with a breakaway receptacle to physically interrupt the circuit under impact. Mount the breakaway unit on the line side and consist of a wire connector for the external circuit and an insulating sleeve housing a deeply recessed female terminal. Complete the assembly by a conventional in-the-line fuseholder with its line terminal being a solid copper rod. When assembled, ensure that the male terminal of the fuseholder telescopes into the insulating sleeve of the receptacle and makes a sliding contact with the female receptacle terminal. Ensure that there are four similar styles of breakaway receptacles differing only in the type of connector for the line side conductors as follows:

1.      Type VIII.) Ensure that the AL Kits provide an in-the-line mounting for the fuseholder. It contains a setscrew-type connector for aluminum conductor.
2.      Type VIII.)) Ensure that the CU Kits provide an in-the-line mounting for the fuseholder. It contains a crimp type terminal that will accept a single copper conductor.
3.      Type IX.)) Ensure that the AL Kits provide a tee tap to the fuseholder. Furnish a setscrew connector made of aluminum to accept aluminum conductors.
4.      Type IX.)) Ensure that the CU Kits provide a tee tap to the fuseholder. Furnish a setscrew connector made of copper to accept copper conductors.

Furnish insulating boots of water-resistant, synthetic rubber, suitable for burial in the ground or exposure to sunlight, for both the line and load side of all fuseholder kits with breakaway receptacles.

E. Cable Splicing Kits. Ensure that each cable splicing kit contains all items necessary to complete a permanent, direct buried, water resistant, inline, wye, or tap splice as required by the plans. Furnish cable splicing kits that are either a transparent rigid mold, resin-filled type, or a heat-shrinkable sleeve, or a wraparound pad coated with a heat-activated self-encapsulating adhesive. Furnish each kit with the following:

1.      A sleeve or tee cable connector conforming to the general requirements of Style “C” or other connecting device approved by the Engineer.
2.      A means of containing the sealing material around the cable connector.
3.      Sufficient self-hardening compound to assure a watertight splice.
4.      Heat shrinkable tubing or pre-molded boots for sealing ends of duct-cable.
5.      Complete installation instructions.

B. Detail Requirements. Furnish ground rods that have either a circular cross-section with a diameter of 1-inch (25 mm) or more or, if other than circular in cross-section and that have a periphery of 3.2 inches (80 mm) or more. Furnish 10 feet (3 m) long, solid rods that have a driving point on one end. Furnish ground grid rods that are 3/8-inch (10 mm) minimum diameter (approximately 30 feet (9 m) in length) solid rods with blunt ends. Furnish rod material that is stainless steel jacketed steel bearing UL label or hot-dip galvanized steel according to ASTM A 153, Class B-1.

Instead of solid metal rods, provide ground grids composed of 3/8-inch (10 mm) diameter preformed seven-strand, utilities grade, Class B, messenger wire conforming to ASTM A 475.

A. Scope. This specification covers the cable used for electrical grounding of structures.

B. Detail Requirements. Furnish stranded, soft-drawn, insulated, copper cable of the size shown, bearing a UL label or conforming to 725.02.B.

A. Scope. This specification covers the materials used as identifying markings on cables and light poles.

B. Detail Requirements. Furnish circular shaped tags as specified, or with 1 3/8-inch (35 mm) minimum diameter, 1/32-inch (0.8 mm) minimum thickness copper, brass or plastic except that tags within switch and device cabinets are of nonmetallic material. Furnish identifying bands that are approximately 1/32 inch (0.8 mm) thick, 3/16 inch (5 mm) wide, and at least 4 inches (100 mm) long nylon, self-clinching type with adequate sized tab for labeling. Permanently fasten the tags to cables by means of tying straps of the same material and dimensions as identifying bands without tabs. Mark each tag or band tab using 1/4-inch (6 mm) minimum lettering dies or by the use of embossing or engraving devices. Markings shall indicate “GRD” for all ground and grounded neutral conductors. Mark companion circuit conductors “CKT” followed by the designated letter, numeral or symbol as shown on the plans.

Apply pole identification by using adhesive labels with silver white reflective characters on a reflective green background meeting the requirements of 730.18.

A. Scope. These Specifications cover materials and equipment normally comprising a service pole and including service equipment.

B. Detail Requirements. Furnish poles and pole keys that are Southern Pine or Western Red Cedar, full length, pressure treated according to AWPA using either creosote or pentachlorophenol. Ensure that the retention of preservative in Southern Pine is 7.5 pounds (120 kg) of creosote by assay or 0.38 pounds (6 kg) of pentachlorophenol by lime-ignition assay per cubic foot (cubic meter) of wood. Ensure that the retention of preservative in Western Red Cedar is 16 pounds (256 kg) of creosote by assay or 0.8 pounds (13 kg) of pentachlorophenol by lime-ignition assay per cubic foot (cubic meter) of wood. Ensure that poles that are 35 feet (10.5 m) minimum length and Class 4 or heavier conforming to the applicable requirements specified by ANSI Pole Dimensions. Furnish poles that are reasonably straight without pronounced sweep or short crooks.

Furnish wood crossarms that are treated and of the specified dimensions. Ensure that the treatment is as specified above.

Furnish pole hardware, including bolts, nuts, washers, clamps, screws, braces, racks, etc., of specified size, and galvanized according to 711.02.

Attach ground wire to the pole with copper clad, rolled point staples of adequate size to accommodate the ground wire supported.

Ensure that the ground wire molding is either wood or plastic, in sections not less than 8 feet (2.4 m) long and of sufficient width and groove depth to completely enclose the ground wire. Attach molding to pole by means of galvanized steel pipe straps and galvanized nails.

Furnish malleable iron anchors that have a 6-inch (150 mm) minimum diameter, and that are the two-way or four-way expanding type. Furnish anchor rods that have a 5/8-inch (16 mm) minimum diameter, 8 feet (2.4 m) minimum length and that are galvanized steel with twin thimbleye.

Furnish guy strands that have a 3/8-inch (10 mm) minimum diameter, conforming to ASTM A 475, galvanized steel.

Furnish riser conduit as specified in 725.04 with a rain-tight galvanized steel service entrance head (weatherhead) threaded to fit the specified size of conduit and provided with a composition cover for two- or three-wire service.

Furnish a service disconnecting device with a fused safety switch or circuit breaker rated 600 volts AC minimum for 480-volt service or 240 volts AC minimum for 240 volts or less service. Ensure that the current rating of the device is as specified but not less than 60 amperes. Ensure that the circuit breaker is a service equipment type. Furnish single throw devices with the specified number of poles and solid neutral not interruptible with operation of the device, but provide other means for disconnecting the grounded neutral at the neutral terminal block. Furnish fuse clips for cartridge type fuses at the load side terminals of the switch. If the disconnecting device is a circuit breaker type and separate load side protection is required for two circuits, use a single-pole, single throw circuit breaker type device of the specified ampere rating mounted in series with the main breaker.

Size the line and loadside cable terminal lugs of the device to accommodate the specified wire size. If lugs of adequate size to enclose the total outside diameter of the cables are not furnished, furnish and install insulated buses of specified ampere rating and dimensions and provide acceptable cable terminations as directed by the Engineer.

Furnish dry type contactor circuit transformers having the specified wattage rating to step down the lighting circuit voltage of 480 volts to 120 volts, single-phase, 60 hertz. Furnish a fuse in series with the 480-volt winding.

Furnish open type lighting contactor rated 600 volts AC and provided with an electromagnetically held 120-volt, 60 hertz coil. Furnish a contactor rated at 60 amperes minimum that has a minimum of three poles. Furnish a “HAND-OFF-AUTO” selector switch in the photoelectric cell circuit and located within the enclosure.

Furnish a utility grade, solid state, cadmium sulfide photoelectric control with hermetically sealed silicon rectifier rated 120 or 480 volts, 60 hertz and 1000 watts maximum load. Furnish built-in surge protection and include a fail-safe operating feature so that the lighting circuits will remain energized in the event the photo control components become inoperative. Ensure that the nominal operating levels of this control are “turn on” at a minimum illumination value of 1 vertical foot-candle (10 lx) and that are “turn off” at a maximum illumination value of 6 vertical foot-candles (65 lx). Set these limitations using the manufacturer’s recommendations and maximum tolerances of ±20 percent for the specified values will be acceptable.

Furnish twist-lock photoelectric controllers. Furnish a suitable mounting bracket with EEI-NEMA locking-type receptacle and all other necessary mounting hardware.

Furnish a secondary type lightning arrester having the specified number of poles. Furnish arresters with suitable mounting brackets and all other necessary mounting hardware.

Furnish NEMA ICS-1-110.15, Type 4 enclosures that are adequate to house the designated equipment for outdoor locations. Fabricate enclosures from No. 16 gage or heavier AISI Type 302 or 303 annealed stainless steel with a brush finish. Fully weld all seams. Ensure that all fastenings used in assembly or mounting of the enclosures conform to ASTM A 320/A 320M (AISI 300 series).

Furnish each enclosure with a door so constructed that it cannot be opened when the principal electrical disconnecting device mounted therein is in the “ON” position. However, make provision by means of a lockable double-defeater opening handle to permit intentional opening of the door with a screwdriver when the disconnecting device is in the “ON” position.

1. Furnish a door with a mechanism interlocking the door latch and the operating handle, and include a provision for padlocking. Ensure that the mechanism is defeatable in the following sequence when the operating handle of the disconnecting device is in the “ON” position. (1) Release door latch with one hand on door latch handle while simultaneously operating door latch defeater screw with a screwdriver in the other hand. (2) Open door with one hand on door latch handle while simultaneously operating disconnect handle defeater screw with a screwdriver in the other hand.

Sufficiently recess the door latch defeater screw within its housing so as it cannot be turned with a coin or flat washer.

Furnish a door latching mechanism that must be turned to fully engage its latch before the disconnect handle can be moved to the “ON” position.

2. Furnish an insulated solid copper common neutral bus of adequate ampere rating and capable of terminating the specified size of wire.

3. Furnish a schematic wiring decal of the entire control center installed on the inside of the door.

4. Furnish an equipment warning sign reading “DANGER-HIGH VOLTAGE” stenciled on the outside of the door in red weather-resistant paint or the same wording etched on a brass plate riveted to the outside of the door. See 625.16 for other markings.

5. Furnish a 14 gage or heavier enameled steel panel, securely fastened to the inside of the back of the enclosure and of adequate size to accommodate all devices and integral wiring on all sides and to the rear.

A. Scope. These Specifications cover materials and manufacturing methods used in the fabrication of light towers, tower components, and anchors used to support luminaires at heights of 70 feet (20 m), and greater, above the foundation. Ensure that the design of light towers conform to the AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals. Base the light tower design using a wind speed of 90 miles per hour (145 km/h), with a maximum load of six luminaires, each weighing 75 pounds (34 kg) with a projected area of 3.5 square feet (0.3 m²), mounted on a head frame assembly with top latched device having a projected area of 5.3 square feet (0.5 m²) and weighing 340 pounds (154 kg).

B. General. Furnish an integral luminaire lowering device that is compatible with the tower design and consists of a head frame assembly, a luminaire ring assembly, and winch assembly. Furnish a system that permits luminaire maintenance at ground level, provides a permanently attached plug and cord for energizing the lighting assembly when it is at ground level, supports two to six 75-pound (34 kg) luminaires in a symmetrical arrangement, and includes power cables and all miscellaneous electrical and mechanical equipment in the tower necessary to provide a complete and workable device. Ensure that outlets, inlets, and plugs for connecting electrical power to the luminaire mounting assembly have pin arrangements conforming to NEMA Configurations for Locking Devices as follows: for three-wire, 240-volt systems, use NEMA Configuration G-33; and for two-wire, 480-volt systems, use NEMA Configuration G-17. Ensure that the disconnection of the electrical service at each tower is accomplished by means of a two-pole, 30-ampere, 480-volt breaker with a minimum symmetrical RMS interrupting capacity of 14,000 amperes, complete with NEMA 4 enclosure with grounded neutral bar. Furnish breakers that are internally mounted and readily accessible through the tower handhole.

Furnish a complete service manual including instructions on installation, operation, and maintenance for each lowering device, winch assembly, and power drive system furnished on the project.

C. Shafts. Furnish tower shafts that consist of not more than four round or multisided tapered steel sections for shafts up to and including 100 feet (30 m) in length, five sections between 101 and 120 feet (31 and 37 m), and six sections over 120 feet (37 m). Ensure that the steel used in fabricating the shaft has a minimum yield strength of 55,000 pounds per square inch (379 MPa) after fabrication or meet the requirements of an approved alternate design. Submit shop drawings of alternate proposed designs with sufficient calculations to demonstrate to the satisfaction of the Engineer that the design proposed meets the minimum requirements of the AASHTO specifications cited.

Furnish sections that either telescope with each other or are shop butt welded by electric arc welding. Ensure that the lap joint produced by telescoping has a length that is the larger of 2 feet (0.6 m) or 1.5 diameters of the shaft at the joint, measured at the minimum diameter of the inner telescoping section. Ensure that the sections are pre-fitted and match-marked at the factory. Ensure that the inside surface of the shaft is relatively smooth to provide a cable raceway.

Ensure that there are no more than two longitudinal welds in the tapered sections of the shaft that are made by automatic electric arc welding. Transverse butt welds may be used, but only under closely controlled shop conditions. Ensure that all shaft welds except on longitudinal seams, have complete penetration, have uniform density, and are no thinner than the shaft material nor more than 20 percent thicker than the shaft material. Ensure that shaft welds on longitudinal seams have at least 60 percent penetration except in areas where the shaft section telescopes over another section. In the overlapping areas, use complete penetration longitudinal seam welds for a distance of the nominal splice length plus 6 inches (150 mm).

Join the shaft to the base plate using the American Welding Society prequalified joint TC-U4a-S or TC-U4c-GF. Furnish handholes or openings in the shaft that are properly reinforced to avoid stress risers and are welded to the shaft using a joint and techniques designed to insure total penetration plus an outside fillet equal to the thickness of the shaft material. Ensure that the handhole is gasketed to make it weatherproof. Fabricate the door from the same type steel as the shaft and attached with continuous stainless steel hinges having non-removable stainless steel hinge pins. Furnish a door that includes provisions for padlocking. Furnish at least one padlock with each tower. Furnish a padlock that has a bronze or brass lock body and a corrosion-protected steel shackle. Key all padlocks for a project alike and obtain the master key number from the maintaining agency. Furnish a tapped hole at the base of the tower for a 1/2-inch (13 mm) galvanized bolt and washer connection for the grounding cable.

Ensure that shafts are hot dipped galvanized after fabrication according to 711.02.

D. Luminaire Ring Assembly. Fabricate the luminaire ring assembly from steel conforming to ASTM A 36/A 36M or material that has the same strength characteristics as the tower. Fit the ring with the appropriate number of 2-inch (50 mm) nominal steel pipe mounting arms. Pre-wire the luminaire ring with copper conductor of adequate size and insulation to facilitate wiring the required number of luminaires. Terminate all power cables in a NEMA 4 corrosion resistant junction box with weather-tight cable connections. Ensure that the main electrical supply cable and its cable clamp terminator support one and one-half times the full cable weight without cutting the conductors or insulation and without stretching the outer jacket of the cable. Ensure that the similar connection of the electrical cable to the cable termination within the tower meets the same requirements, but is capable of supporting the weight of the cable plus a wind load on the cable length due to 30 miles per hour (48 km/h) winds. Ensure that the junction box includes a secondary line lightning arrestor and 600-volt terminal block, completely prewired. Furnish a weather-tight twist lock power inlet on the luminaire ring to allow testing of the luminaire ring while in the lowered position.

Support the luminaire ring by three galvanized or stainless steel aircraft cables of seven strands, 19 wires each, with a minimum diameter of 3/16 inch (5 mm). Secure each of the three cables to the ring and to the cable terminating device within the tower by means of compatible corrosion resistant devices. Ensure that the connection of the three cables to the terminator is by shop applied, swage-type fittings designed to develop a holding strength equal to the breaking strength of the cable.

Incorporate positive latching devices into the ring assembly. Furnish devices that are designed to prevent any movement of the ring assembly when it is latched to the top of the pole and tension is removed from the ring support cables. Ensure that all moving parts of the latching devices are part of the luminaire ring assembly. Furnish reflectors or flags to indicate when the luminaire ring assembly is completely and securely latched to the head assembly. Ensure that the indicating flags or reflectors are clearly discernible from the ground when the luminaire ring is in the latched position. To prevent unnecessary stress on luminaires and lamps, ensure that the latching sequence does not exert a horizontal force sufficient to cause an excess of 4 g’s acceleration upon the luminaires.

Furnish the ring assemblies that have a minimum of three roller-contact spring located centering arms in continuous contact with the pole shaft during raising and lowering of the ring. Ensure that the guide arm rollers are made of a nonabrasive, water-resistant material.

E. Head Frame Assembly. Fabricate the head frame assembly from steel that conforms to the requirements of ASTM A 36/A 36M, or steel having the same strength characteristics as the tower. Furnish all necessary pulleys and rollers to guide the hoisting cables and electrical cable. Ensure that the minimum tread diameter for the hoisting cable sheaves is 20 times the cable diameter for galvanized cable and 25 times the cable diameter for stainless steel cable. Ensure that the hoisting cable sheave groove cross-section is semi-circular with a radius of one-half the cable diameter plus 1/64 inch (0.4 mm). Suspend all hoisting cable sheaves on stainless steel shafts fitted with oil-impregnated bronze bushings.

Furnish a power cord roller assembly that consists of rollers mounted between two cold-rolled steel plates. Ensure that the power cord rides on rollers mounted on AISI 304 stainless steel shafts. Locate rollers on a radius on either end of the plates to support the power cord in a minimum 7-inch (175 mm) bending radius. At either end of the plates, provide a keeper bar over the power cord between the plates to keep the cord in its track during pole erection and during normal operation.

Furnish a guide to separate the individual cables so that twisted or tangled cables cannot reach a pulley.

Protect the headframe assembly from the weather by a dome cover made of either copperfree spun aluminum or fiberglass.

F. Winch Assembly. Furnish winch drums that have a diameter of not less than 4 inches (100 mm), and are supported by rigidly mounted bearings of the proper load capacity. Furnish drum flanges that have a diameter at least 3 inches (75 mm) greater than the drum. Furnish a set of guides or a cable follower to prevent cable buildup at the ends of the winch drum. Furnish keepers to prevent the cable from fouling after the tension has been relieved.

Furnish a winch that is driven by a worm gear reducer equipped with a self-locking device. Ensure that the gear reducer is permanently lubricated and is enclosed in a housing of cast aluminum, cast iron, or other approved material. The gear reducer shall have an ultimate output torque capacity five times greater than that required to lift the nominal load.

G. Winch Drive System. Furnish a winch assembly that is externally powered by a heavy duty reversing drill motor, or NEMA frame motor, minimum 3/4 horsepower (560 W) rating, 120-volt. Incorporate a torque limiter of size and rating recommended by the manufacturer into the system to prevent overloading the hoisting system. Ensure that the system includes a transformer to step down the existing system voltage to 120 volts. Ensure that the hoisting rate is between 15 and 25 feet per minute (4 and 8 m/min). Furnish a remote hand control unit with not less than 20 feet (6 m) of cord to allow operation of the unit while positioned away from the pole.

H. Base Plates. Fabricate base plates from steel that conforms to the requirements of ASTM A 36/A 36M.

I. Anchor Bolts and Nuts. Furnish steel anchor bolts with 55,000 pounds per square inch (379 MPa) (minimum) of yield strength and that are galvanized according to 711.02. Ensure that the galvanizing extends at least 2 inches (50 mm) beyond the threads. In lieu of a bent end, use a drilled and tapped steel plate of approved size and thickness. Furnish anchor bolts with nuts capable of developing the full strength of the anchor bolt.

J. Fittings. Furnish fittings conforming to 725.01.B.7, except that galvanized steel fittings are not permitted.

K. Welding. Weld according to 513.21. Test all welds in the shaft by ultrasonic or approved alternate method, and furnish certification of this requirement to the Laboratory. Ensure that the acceptance level satisfies AWS D 1.1 Structural Welding Code Article 9.25.3 for tensile stress.

L. Luminaires. Furnish luminaires that consist of an optical assembly, lamp, ballast, and aluminum housing with side entry mounting for a 2-inch (50 mm) pipe that provides adjustment for leveling. Furnish mounting attachments that prevent twisting of the luminaire about the bracket. Ensure that the entire unit is of substantial design adequate to operate at 70 to 150-foot (20 to 46 m) mounting heights when subjected to wind velocities of 90 miles per hour (145 km/h). When specified for use with 1000-watt lamps, provide the unit with a lamp support around the neck of the lamp and independent of the socket.

Furnish a heavy duty mogul, multiple prewired, porcelain enclosed heavy duty mogul, with integral lamp grip, and large center contact spring providing a firm contact with the lamp base. Ensure that the socket assembly is present to provide the ANSI-IES distribution shown on the plans, but have provisions for adjustment to provide vertical control of the angle of maximum light intensity. Ensure that the actual projected area of the ballasted luminaire not exceed 3.5 square feet (0.3 m²). Furnish ballast that complies with the applicable sections of 725.11 and is rated to the circuit voltage, type, and size of lamp shown on the plans.

Ensure that the maximum beam intensity for the symmetric distribution does not exceed 325 candela per 1000 lamp lumens at angles between 55 and 65 degrees from nadir (downward). Ensure that the nadir initial intensity does not exceed 100 candela per 1000 lamp lumens. Ensure that the maximum beam intensity for the Forward Throw asymmetric distributions do not exceed 425 candela per 1000 lamp lumens at angles between 66 degrees and 73 degrees from nadir. Ensure that the nadir initial intensity does not exceed 175 candela per 1000 lamp lumens.

Ensure that the maximum beam intensity for the Long and Narrow asymmetric distribution does not exceed 425 candela per 1000 lamp lumens at angles between 66 degrees and 73 degrees from nadir. Ensure that the nadir initial intensity does not exceed 175 candela per 1000 lamp lumens.

Ensure that the output efficiency of all high mast luminaires are not less than 65 percent of the bare lamp lumens, with 25 to 35 percent of the bare lamp lumens contained in the 60 to 90 degree vertical zone.

Ensure that the design of the high mast luminaires is such that the entire arc tube of the lamp is optically shielded at angles above 70 degrees from nadir.