725 HIGHWAY LIGHTING MATERIALS
725.01
General
725.02 Wire and
Cable
725.03 unit Type Duct-Cable Systems
725.04 Rigid Galvanized Steel Conduit and
Fittings
725.05 Polyvinyl Chloride Conduits and Fittings
725.06 Polymer Concrete Pull
Boxes
725.07 Plastic
Pull Boxes
725.08
725.10 Junction
Boxes.
725.11 Luminaires
725.12 Polyethylene, Fiberglas reinforced, Pull Box
with Polymer concrete cover and support ring
725.15 Circuit Cable Connections and
Terminations
725.16 Ground Rods
725.19 Power Service Components
725.20 Multiple Cell Polyvinyl Chloride Conduit and
Fittings.
725.21 Luminaire Supports
725.01 General. Furnish luminaires, conduits, wire, switch
gear and other electrical hardware that are listed with Underwriters
Laboratories.
Ensure that each item of manufactured electrical apparatus as a unit has a durable nameplate identifying the manufacturer and manufacturer=s product identification.
The Engineer will inspect all lighting materials at the project site.
Only provide samples when required by the Laboratory.
725.02 Wire and Cable. Ensure that each nonshielded wire or cable rated 0-2kV is single conductor, stranded copper with cross‑linked thermosetting polyethylene insulation, nonjacketed, meets the requirements of ICEA S-95-658/NEMA WC70 and is of UL Type RHH‑RHW‑USE except for conductors # 10 AWG and smaller for which those with insulation meeting the requirements of UL Type XHHW may also be used.
Ensure that each nonshielded wire or cable rated 2001-5kV is single conductor, stranded copper with chemically cross‑linked polyethylene insulation, nonjacketed, meets the requirements of ICEA S-96-659/NEMA WC71 and of UL Type MV‑90 dry.
Ensure that each cable’s identification device defining it’s use is either a tag tied onto the cable or a band applied around the cable. Ensure that cable tags are of copper, brass or plastic (except for tags within switch and device cabinets which shall be nonconducting) 1/32 inch (0.8 mm) minimum in thickness permanently fastened to the cables by means of cable tying straps. Ensure that cable identifying bands are approximately 1/32‑inch (0.8 mm) thick wrap completely around the cable and closed securely. Ensure that each tag or band is marked using 1/4 inch (6 mm) minimum height embossed or engraved letters.
Ensure that conductors shall be marked "CKT" followed by the circuit designation shown on the plans and that grounding conductors are marked "GRD" and that neutral conductors are marked ANEU@ and that hot conductors are marked ALine@ followed by A1" or @2" for single phase power or APhase@ followed by AA@ or AB@ or AC@ for three phase power.
Furnish materials according to the Department’s Qualified Products List (QPL).
725.03 unit Type Duct-Cable Systems Ensure that factory made cable-in-duct has conductors as specified, that the duct is high density polyethylene Type III, Class C, Category 5, Grade 34 conforming to NEMA TC‑7 and that the duct has the manufacturer's name and the year of manufacture included in the marking.
Conductors and neutrals will conform to 725.02
Furnish materials according to the Department’s Qualified Products List (QPL).
725.04 Rigid Galvanized Steel Conduit and Fittings Ensure that rigid galvanized steel conduit complies with the requirements of ANSI C 80.1 and UL 6 Type I and that each length of conduit bears the UL label. Furnish fittings that comply with the requirements of ANSI/NEMA FB 1 AND ANSI/UL 514B.
Furnish materials according to the Department’s Qualified Products List (QPL).
725.05 Polyvinyl Chloride Conduits and Fittings Furnish polyvinyl chloride conduit and fittings conforming with NEMA Standard TC‑2.
Furnish materials according to the Department’s Qualified Products List (QPL).
725.06 Polymer Concrete Pull Boxes Ensure that the polymer concrete pull box and cover is of aggregate bound with a polymer resin. Ensure that the body of the box is of one piece construction. Ensure that all surfaces of the box and cover are smooth and that the cover has a molded slip resistant surface. Ensure that the cover is labeled in clearly legible block letters 1 inch to 2 inches (25 mm - 50 mm) in height integral to the cover with the word "TRAFFIC", ALIGHTING@, "ELECTRIC" or "TELEPHONE@ to designate the circuit(s) contained. Ensure that the cover closely fits the opening and is secured by stainless steel bolts and hardware and that the threaded holes into which the cover bolts fasten are of open bottom design. Ensure that the box and cover meet the structural requirements of Society of Cable Telecommunications Engineers Tier 15.
Furnish materials according to the Department’s Qualified Products List (QPL).
725.07 Plastic Pull Boxes Ensure that the plastic pull box and cover is of high density ultraviolet stabilized molded polyethylene with a box wall thickness of at least 1/4 inch (6 mm). The box depth may be obtained through the use of extensions or stacking. Ensure that the cover is slip resistant and has in clearly legible block letters 1 inch to 2 inches (25 mm - 50 mm) in height integral to the cover the word "TRAFFIC”, “LIGHTING”, "ELECTRIC” or "TELEPHONE@ to designate the circuit(s) contained. Ensure that the cover closely fits the opening and is secured by stainless steel bolts and hardware and that the threaded holes into which the cover bolts fasten are of open bottom design. The box shall meet the structural requirements of Western Underground Committee Guide 3.6.
Furnish materials according to the Department’s Qualified Products List (QPL).
725.08
725.10 Junction Boxes. Ensure that the junction boxes are iron castings hot‑dip galvanized in accordance with 711.02. Ensure that the junction boxes meet the requirements of NEMA ICS‑6‑Type 3. When a drilled and tapped conduit entry is stipulated, ensure that the junction box has adequate wall thickness and that a boss has been cast into the box if such is necessary.
Furnish materials according to the Department’s Qualified Products List (QPL).
A. Optical System. Furnish a luminaire set to the photometric distribution stipulated in the plan and that the distribution along with the settings required to produce it are clearly indicated on a durable label affixed to the interior of the housing in a position readily apparent and easily read by a worker lamping the luminaire.
Furnish a luminaire with a borosilicate glass refractor free of striations and imperfections and embossed to clearly indicate the street side when the refractor may be installed in more than one position. Ensure the refractor is held firmly in the housing, but is easily removed without the use of special tools.
Furnish a luminaire with an aluminum reflector with a specular polished reflective surface free from scratches. Ensure the reflector is held firmly in the housing, but is easily removed without the use of special tools.
Furnish a luminaire with a socket for mogul base lamps where there is a choice of size for the application at hand.
Furnish a lamp socket with a large center contact spring providing a firm contact with the lamp base and lamp grips to prevent the lamp from loosening. Ensure that the shell is shrouded in porcelain and that the wiring terminals and contacts are identified.
Ensure that socket positions adjustments have positive indexing such as holes, lugs or notches and are not slots with infinite settings.
Ensure that socket adaptors are not necessary nor used.
B. Lamps. Furnish a luminaire that has been provided with a lamp of the type and wattage specified and that each lamp has a clear glass envelope, a date recording feature and does not have any ballasting or starting components.
Furnish high pressure sodium lamps that are first line, high quality lamps having heat resistant clear glass envelopes with a quartz arc tube interior with horizontal initial lumens and approximate hours of life not be less than the values shown in Table 725.11-1.
|
ANSI |
|
Horizontal Lumens Initial |
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 |
Furnish high pressure sodium lamps that produce a minimum of 80 percent of the initial lumen output at the end of economic life.
Furnish mercury lamps that are first line, high quality lamps having heat resistant clear glass envelopes with a quartz arc tube interior with horizontal initial lumens and approximate hours of life not less than the values shown in Table 725.11-2.
|
ANSI |
|
Horizontal Lumens Initial |
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 |
Furnish mercury lamps that produce a minimum of 78 percent of the initial lumen output after 12,000 hours use.
Furnish metal halide lamps that are first line, high quality lamps having heat resistant clear glass envelopes with a quartz arc tube interior with horizontal initial lumens and approximate hours of life not less than the values shown in Table 725.11-3.
|
ANSI |
|
Horizontal Lumens Initial |
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 |
Furnish metal halide lamps that produce a minimum of 65 percent of the initial lumen output at the end of economic life.
Furnish low pressure sodium lamps that are first line, high quality lamps having heat resistant clear glass envelopes with a quartz arc tube interior with horizontal initial lumens and approximate hours of life not less than the values shown in Table 725.11-4.
|
|
Lumens Initial |
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 |
Furnish lamp materials according to the Department’s Qualified Products List (QPL).
C.
Ballast. Ensure that
the ballast is of an integral design contained within the luminaire housing.
If the
ballast is to be wired line to line or phase to phase, ensure that the ballast
has an isolated primary winding. If the
ballast is to be wired line to grounded neutral or phase to grounded neutral,
the ballast may be either the isolated primary winding design or the auto
transformer design.
Furnish a
ballast (in conjunction with the starter in the case of high pressure sodium
lamps)capable of starting and operating the lamp at ambient temperatures as low
as ‑20°F (‑30°C).
At circuit
voltage of nominal plus or minus 10 percent or the ballast manufacture=s stated range if greater, ensure that the
ballast can start (in conjunction with the starter in the case of high pressure
sodium lamps) and operate the lamp within the lamp=s ANSI
operating parameters for the full design life of the lamp.
When
required by the Engineer, furnish original copies of the luminaire
manufacturer=s ballast electrical data and lamp operating
volt‑watt traces for nominal and plus or minus ten percent rated line
voltage to verify ballast performance and compliance with ANSI
lamp specifications, for the rated life of the lamp.
Furnish a
ballast capable of operation with the lamp in an open or short circuit
condition for six months without significant loss of ballast life.
Furnish a
starter of encapsulated solid state design capable of withstanding the
temperatures encountered in the ballast compartment of the luminaire.
Ensure that
the starter provides a timed pulsing with sufficient follow through current to
completely ionize and start all lamps that meet published ANSI
standards.
Ensure that
the starter ceases operation after the lamp has started and that the starter
protects itself, the ballast, the capacitor, and the lamp socket against cycling,
burned out, broken or missing lamps by ceasing the starting operation after the
power has been applied to the luminaire for a period of not less than 3 minutes
and no more than ten minutes and not beginning the starting operation again
until power has been shut off and reapplied to the luminaire.
Ensure that
the starter has push‑on type electrical terminations and is field
replaceable and completely interchangeable with no adjustment necessary for
proper operation.
Ensure that
there is a barrier type terminal block for connection of the incoming
electrical circuit.
D. Housing. Furnish a housing of cast aluminum.
Ensure that
the housing has a flat area on the top side on which a level may be placed and
read by a worker leveling a mounted luminaire on an erected support.
Ensure that
the door(s) providing access to the optical and electrical components have
hinges and latches of corrosion resistant materials that remain securely closed
during operation.
Ensure that
the silicone rubber, ethylene propylene terpolymer, dacron felt or other
durable gaskets and seals supplied by the manufacturer either as part of the
basic luminaire or as options are in good condition and properly installed at
the socket entry, between the refractor and reflector and any other location
where such gaskets or shields are part of the luminaire and options.
Ensure that
the exterior finish of the luminaire is a light gray color unless otherwise
specified.
Furnish a
glare shield of aluminum or opaque plastic material when specified. Furnish a
shield supplied by the manufacturer of the luminaire.
E. Conventional Luminaries. Ensure that the luminaire housing doors may
be opened, closed, removed or installed without the use of tools.
Ensure that
the clamp for the slip‑fit mounting accommodates both 1 1/4" (32 mm)
and 2" (50 mm) nominal pipe mounting bracket. Ensure that a stop is provided as part of the
housing to prevent over insertion of the bracket into the housing. Ensure that the clamp engages at least 4
1/2"(115 mm) longitudinally along the arm of the bracket arm between the
extremes of a minimum of two clamping points.
Ensure that the mounting clamp provides for leveling of the luminaire to
the specified transverse and longitudinal position with respect to the roadway.
Ensure that
the luminaire is equipped with a device indicating the direction and amount of
tilt over a range of zero to five degrees in any direction with indications at
level, three degree tilt and five degree tilt all accurate to one half degree. Ensure that the indicating device is clearly
readable in daylight from a distance of 50 feet (15 m) and in no way alters or
reduces the amount of light from the luminaire.
Ensure that the indicating device is constructed of a transparent
container having one horizontal surface which is curvilinear in any vertical
cross section for supporting an indicator and a damping fluid. Ensure that the damping fluid is a liquid
which shall be suitable for operation at ‑40° F (‑40° C)and that
the transparent container is fabricated from clear ultraviolet‑inhibited
acrylic or similar material.
Ensure that
the glare shield will cut off the upward component of light and that it does
not reduce the total output of the luminaire more than 3 percent.
Ensure that
the luminaire has a label or decal indicating the type of source and wattage
rating. Ensure that, with the luminaire
installed in its normal operating position, the label or decal is clearly
legible in daylight at a distance of 50 feet (15 m). Ensure that the labeling is in accordance
with the provisions of NEMA
Publication OD‑150 or EEI
Publication TDJ‑150.
Ensure that
the complete conventional luminaire assembly including the lamp and all options
including, when required, the glare shield does not weigh more than 75
pounds(34 kg).
Furnish conventional luminaire materials according to the Department’s Qualified Products List (QPL).
F. Wall Mounted Underpass Luminaires. Ensure that the assembly is weatherproof and
sealed against dust.
Ensure that
a wire entry for the incoming power is provided on both of the vertical side
surfaces of the housing, that each entry is drilled and tapped for 3/4 inch (19
mm) conduit and that the unused entry is properly closed with the screw type
plug supplied by the manufacturer.
Ensure that
the luminaire housing doors may be opened, closed, removed or installed without
the use of special tools.
Ensure that
the housing can be mounted onto a vertical flat surface by means of cap screws
or bolts through the wall side of the housing.
Ensure that
the luminaire has the option for protecting the glass refractor with a guard or
shield that is integral to the luminaire and does not have to be removed to
gain access to the lamp or ballast.
Furnish wall mounted underpass luminaire materials according to the Department’s Qualified Products List (QPL).
G. High Mast / Low Mast Luminaires. Ensure that luminaires with a symmetric
distribution shall have an initial intensity of no more than 100 candela per
1000 lamp lumens at nadir and no more than 325 candela per 1000 lamp lumens at
angles between 55 and 65 degrees above nadir.
Ensure that
luminaires with an asymmetric distribution or a long and narrow distribution
shall have an initial intensity of no more than 175 candela per 1000 lamp
lumens at nadir and no more than 425 candela per 1000 lamp lumens at angles
from 66 through 73 degrees above nadir.
Ensure that
the output efficiency of the luminaire shall be not less than 65 percent of the
bare lamp lumens. The luminaire shall
emit at least 25 percent but no more than 35 percent of the bare lamp lumens at
vertical angles of at least 60 degrees above nadir but no more than 90 degrees
above nadir.
Ensure that
no portion of the arc tube of the lamp shall be viewable at angles of 70
degrees or more above nadir.
Ensure that
the photometric distribution is produced by an optical assembly consisting of a
reflector alone or in combination with a refractor which redirects the output
of a lamp mounted in a socket therein and that the reflector and refractor (if
used) are each of a one piece design.
Ensure that
the optical assembly is field rotatable to align the light distribution
horizontally independent of the orientation of the arm supporting the
luminaire.
Ensure that
a luminaire for use with a 1000 watt lamp has an auxiliary lamp support that
engages the outer end of the lamp envelope.
Ensure that
the luminaire is of substantial design adequate to operate at mounting heights
up to and including 150‑feet(45 m) and wind velocities up to and
including 90 mph (145 km/h).
Ensure that
the luminaire mounts by means of a slip fit onto a horizontal 2 inch (50 mm)
pipe and that the luminaire=s
integral mounting provides adjustment for leveling but remains secure and does
not twist about the mounting pipe of the bracket when subjected to the
vibration and wind loads of the installation.
Ensure that
the maximum weight of the complete luminaire does not exceed 75 pounds (34 kg)
and the maximum projected area does not exceed 3.5 square feet (0.3 m2).
Furnish
high mast/low mast luminaire materials according to the Department’s
Qualified Products List (QPL).
725.12 Polyethylene,
Fiberglas reinforced, Pull Box with
Polymer concrete cover and support ring Ensure that the pull box body is of fiberglass
reinforced high density ultraviolet stabilized molded polyethylene with a
polymer concrete cover support ring and polymer concrete cover. Ensure that the body of the box is of one
piece construction. Ensure that the body
of the box has a wall thickness of at least 1/4 inch (6 mm). Ensure that the cover support ring is permanently
integrated into the box. Ensure that the
cover is slip resistant and has in clearly legible block letters 1 inch to 2
inches (25 mm - 50 mm) in height integral to the cover the word "TRAFFIC”,
“LIGHTING”, "ELECTRIC” or "TELEPHONE” to designate the circuit(s)
contained. Ensure that the cover closely
fits the opening and is secured by stainless steel bolts and hardware and that
the threaded holes into which the cover bolts fasten are of open bottom design. Ensure that the box and cover meet the
structural requirements of Society of Cable Telecommunications Engineers Tier 5.
Furnish materials according to the Department’s Qualified Products List (QPL).
725.15 Circuit Cable Connections and Terminations. Ensure
that each connector or terminator is of the same voltage rating as the wire
being connected or terminated except that 600 volt connectors may be used with
5000 volt (secondary service) cable used in 600 volt service for the highway
lighting circuits.
Ensure that
each connector or terminator is a compression style which fully encloses the
conductor(s) and is of high strength copper alloy not a metal other than copper
which has been plated. Ensure that each connector used for a Abutt@
splice is a sleeve type with a "stop" in the center.
A. Termination of Oversize Wire. Ensure that each cable terminal of each device
can properly accommodate the size of the wire being terminated. If a terminal
of adequate size cannot be furnished, ensure that a short length of smaller
wire is connected to the oversize conductor through the use of a proper butt
style crimp connector or a terminal block, that no strands have been cut back
in the oversize conductor to make the connection and that the smaller wire is
rated to carry the full ampacity of the circuit protection device.
B. Fused Pull-Apart Connection (Type II). Ensure that each fused pull-apart cable
connector kit is a molded synthetic rubber housing consisting of a female line
side with two ports and a male load side with one port containing a socket type
fuse holder wherein the fuse also acts as the pin for the load connection which
is designed to break the circuit when the two halves of the connector body are
separated. Ensure that the assembled kit
is rated for direct burial and exposure to sunlight. Ensure that the metal parts of connector are
of copper with a conductivity of 90 percent, have individual compression
connections for each wire on the line side, have a crimp connection for the
wire on the load side and have annular spring on the socket for each end of the
fuse. Ensure that the fuse holder is for
a standard midget [13/32" x 1-1/2" (10 mm x 38 mm)]fuse. Ensure that the fuse is rated 600 VAC,
100,000 AIC and does not have a glass body.
Ensure that each cable port is sized for the wire or cable entering the
entering the port and that there is a closure for the second line port if it is
not to be used.
C. Unfused Pull-Apart Connection (Type III). Ensure that each unfused pull-apart cable connector kit is a
molded synthetic rubber housing consisting of a female line side with two ports
and a male load side with one port containing a line side socket and load side
pin making a connection which is designed to break the circuit when the two
halves of the connector body are separated.
Ensure that the assembled kit is rated for direct burial and exposure to
sunlight. Ensure that the metal parts of
connector are of copper with a conductivity of 90 percent, have an individual
compression connection for each wire on the line side, have a crimp connection
for the wire on the load side, and have an annular spring on the socket for the
pin. Ensure that each cable port is
sized for the wire or cable entering the port and that there is a closure for
the second line port if it is not to be used.
D. Unfused Bolted Connection (Type VII). Ensure that each unfused re-enterable cable connector
kit is a rigid molded plastic sleeve closed on each end by a molded synthetic
rubber female end housing having one or two ports as needed containing space in
which the connection is made by crimping a lug onto each wire and then bolting
all of the lugs together. Ensure that
the assembled kit is rated for direct burial and exposure to sunlight. Ensure
that the metal parts of connector are of copper with a conductivity of 90
percent and that each connecting bolt has a self locking nut. Ensure that each wire enters through a
port sized for the wire and that there
is a closure for the port if it is not to be used.
E. Unfused Permanent Connection. Ensure that each cable splicing kit is a rigid
transparent molded body having as many as two ports on each which allows the
completed splice to be completely encapsulated by filling the mold with a resin
compound. Ensure that the actual conductor connections are made using one time
use compression connectors and that each wire or cable enters the mold through
its own port.
Furnish materials according to the Department’s Qualified Products List (QPL).
725.16 Ground Rods. Ensure that each ground rod is 1 inch (25 mm)
in diameter and 10 feet(3 m) in length with a driving point on the lower
end. If of other than circular cross
section, ensure that the periphery of the rod is 3.2 inches (80 mm) or
more. Ensure that the rod is of solid
construction and is either stainless steel jacketed steel bearing a UL
label or hot dipped galvanized steel in accordance with ASTM A
153, Class B-1.
Furnish materials according to the Department’s Qualified Products List (QPL).
725.19 Power Service Components. Furnish the materials and equipment comprising a service pole, including
service equipment, that meets the following requirements.
A. Service Entrance Conduit. Ensure that the service entrance or riser
conduit is rigid galvanized steel with a rain tight galvanized steel service
entrance head (weatherhead) threaded to fit the conduit containing a
composition insert for 3 conductors.
B. Service Disconnect. Ensure that the service disconnect is a
properly rated fused switch of the ampacity specified and solid neutral. Ensure
that the service fuses are cartridge fuses on the load side of the switch.
C. Lighting Contactor. Ensure that the lighting contactor is of the open type
electromagnetically held.
Ensure that
control of the contactor is through a photocell connected through a "HAND‑OFF‑AUTOMATIC"
selector switch accessible only with the contactor enclosure open. Ensure that the control circuit is a separate
circuit with its own protection.
D. Lighting Circuit Protection. Ensure that separate protection is provided
on the load side of the lighting contactor for each lighting circuit and that
such protection will open all line or phase conductors of the respective
circuit should a fault occur on any one line or phase conductors.
E. Photo Electric Cell. Ensure that the photoelectric control is a
twist‑lock plug-in, utility grade, solid state, cadmium sulfide type of
the proper voltage, rated for 1000 watts maximum load, with integral surge
protection, a fail‑safe mode in which the lighting circuits will remain
energized, and a hermetically sealed case. Ensure that the nominal "turn
on" level is 1 footcandle (10 lux) vertical and that the nominal
"turn‑off" level is 6 footcandles (65 lux) vertical with
tolerances of 20 percent for the specified values. Ensure that the photoelectric control
mounting bracket has a EEI‑NEMA
locking‑type receptacle.
F. Secondary Lightning Arrestor. Ensure that there is a pole top secondary
type lightning arrester when the incoming service is an overhead drop.
G. Switchgear Enclosure. Ensure that components are mounted on a
removable back panel of 14 gage or heavier enameled steel rather than directly
on the back wall of the enclosure and that the back panel mountings do not
penetrate the walls of the enclosure.
Ensure that
a neutral terminal bar of adequate ampere rating and with holes in number and of
size to terminate each conductor separately is provided in each enclosure where
neutral conductors are to be terminated.
Ensure that an equipment grounding conductor terminal bar of adequate
ampere rating and with holes in number and of size to terminate each conductor
separately is provided in each enclosure where grounding conductors are to be
terminated. When there is no code or
utility company prohibition, a combination neutral and equipment grounding
conductor bar may be furnished.
Ensure that
an enclosure containing a disconnect switch with an external operating handle
allows that handle to be padlocked in either the AOFF@ or the AON@ position.
Ensure that
the enclosure containing the service disconnect switch has an interlock to
prevent the door from being opened when the switch is in the "ON"
position
Ensure that
the enclosure provides for padlocking the door.
Ensure that
each switchgear enclosure is a NEMA
ICS‑1‑110.15 Type 4 fabricated from No. 16 gage or heavier AISI Type 302 or 303 annealed
stainless steel with fully welded seams and a brushed finish.
All fasteners
used in assembly of the enclosures shall conform to ASTM A
320/A 320M (AISI‑300
series).
H. Wiring Schematic, Wiring Diagram, Placards.
Furnish both a schematic
diagram and a wiring diagram of the entire power service from the power company
service transformer secondary connection through the lighting branch circuit
connections in triplicate with two copies delivered to the project and the
third copy placed in the service disconnect enclosure. The Engineer will
ensure that one of the two copies delivered to the project is filed with the
project records and the other is delivered to the maintaining agency contact
person.
Ensure that
each placard to be attached to an apparatus enclosure is of multiple layers of
plastic thermally bonded together to provide a plate of at least 1/8" (3
mm) in thickness with engraved plain block letters at least 1/2" (12 mm)
in height. Ensure that placards
designating the function of the apparatus contained in an enclosure or other
such information are of white letters on a black placard. Ensure that placards warning of high voltage
possibly present in an enclosure or other such warning are of white letters on
a red placard.
I. Customer Service Pole. Furnish a wood pole that complies with
Supplement 1072. Ensure that the pole and any cross arms or
pole key is Southern Pine or Western Red Cedar, full length, pressure treated
in compliance with specifications of the American Wood Preservers Association 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 the pole is 35 feet (10.5 m)
minimum in length and Class 4 or heavier and conforming to ANSI
05.1 Specifications and
Dimensions for wood poles. Ensure that the pole is reasonably straight without
pronounced sweep or short crooks.
Ensure that
all pole hardware, including racks, braces, straps, guy anchors, guy wire,
clamps, bolts, nuts, washers, screws, nails, etc. is hot dip galvanized in
accordance with 711.02.
Ensure that
the ground wire is fastened to the pole with copper clad, rolled point staples
of adequate size.
Ensure that
the ground wire molding is either wood or plastic, in sections not less than 8
feet (2.4 m) long, of sufficient width and groove depth to completely enclose
the ground wire.
Ensure that
each pole anchor is of malleable iron or galvanized steel, 6 inch (150 mm)
minimum diameter, two‑way or four‑way expanding type. Ensure that
each anchor rod is 5/8 inch (16 mm) minimum diameter, 8 feet (2.4 m) minimum
length galvanized steel with thimble eye. Ensure that each guy wire is 3/8 inch
(10 mm) minimum diameter, conforming to ASTM A
475, galvanized steel.
725.20 Multiple
Cell Polyvinyl Chloride Conduit and Fittings. Ensure that the multiple cell conduit consists
of inner ducts conforming to NEMA
TC-8 type DB in an outer conduit conforming to NEMA
TC-2 (type EPC-40 or EPC-80 as specified except that size shall be the true
inside diameter) in a factory preassembled unit. Ensure that fittings are factory made
couplings that couple inner ducts and the outer conduit simultaneously,
maintain the continuity and indexing of the inner ducts and are of a push fit
design mechanically locked in place.
Furnish materials according to the Department’s Qualified Products List (QPL).
725.21 Luminaire Supports. Ensure that the complete
luminaire support from the luminaire(s)
down through the connection to the foundation or other structure to which the
luminaire support is attached conforms to the requirements of AASHTO’s
"Standard Specifications for
Structural Supports for Highway Signs, Luminaires and
Traffic Signals".
The design
wind speed for all areas of the State shall be 90 mph (145 km/h).
The
Director may require various tests including destructive tests at either the
factory or on site prior to acceptance of a support in which case the
Department=s representative will supervise the Contractor and/or
manufacturer as the appropriate entity perform the tests on supports selected
at random by the Department from the lot produced for the project. Ensure that any support damaged by the
testing is replaced at no additional cost to the Department.
Ensure that
the support identification labels are adhesive labels with silver white
reflective characters on a reflective green background meeting the requirements
of 730.18.
Furnish certified
luminaire supports according to Supplement 1091
A. Light Poles. Ensure that the deflection of the pole from
vertical when placed under the load of the bracket arm, and a weight of 75
pounds (35 kg) in place of each luminaire does not exceed an angle of 1 degree
10 minutes when tested in accordance with Supplement 1025
and that certified copies of the results obtained from the deflection tests are
furnished the Laboratory.
A pole and
arm constructed from either aluminum or steel but not a combination of the two
may be furnished.
Ensure that
each bracket arm is made from straight or tapered stock round or ovaliptic in
cross section not less in size than 2 inch (50 mm) nominal pipe.
Ensure that
the luminaire end of each bracket arm has an outside diameter equal to 2 inch
(50 mm) pipe, is straight for a distance of 18 inches (460 mm), with the
longitudinal axis canted not less than 1 degree nor more than 4 degrees above
horizontal.
Ensure that
the bracket has an internal raceway with a minimum internal diameter of 1-3/32
inches (28 mm) free of projections and obstructions, which, when assembled to
the shaft, will permit installation of luminaire supply conductors without
insulation damage and which will not require bending the conductors to a radius
less than 3 inches (75 mm).
Ensure that
the pole does not have more than two sections, that the shorter section of a
sectional is at the top and that the shorter section of a sectional pole is not
less than 10 feet (3 m) in length.
Ensure that the pole sections are joined by telescoping the bottom of the upper section
over the top of the lower section for a minimum length of 1 1/2 times the
external diameter of the bottom of the upper section, driving the joint tight,
and securing by through bolting with a stainless steel hex head bolt of a
minimum diameter of 5/8 inch (16 mm).
Ensure that
a pole section does not have more than one longitudinal, automatically
electrically welded seam and no transverse seams. Ensure that the longitudinal welded seam is
neat and uniform in appearance, that the weld is not be less than the thickness
of the base material and that the bead height does not exceed 1/16 inch (2
mm). Ensure that the wall thickness is
uniform throughout, except at the weld bead. Ensure that the cross section of
the pole is circular, or multi-sided with no less than eight sides and that the
difference between the major and minor diameters of poles of circular cross
section or the difference between the maximum and minimum distances across
corners for poles of multi-sided cross section, measured at any point along the
longitudinal axis, does not exceed 3/16 inch (5 mm).
Ensure that
steel poles are tapered tubes with a true continuous taper not less than 0.06
inches per foot(1.5 mm per 300 mm)nor more than 0.16 inches per foot(4.0 mm per
300 mm).
Ensure that
aluminum poles, either spun or cold rolled, are a true continuous taper except
for the top and bottom sections which may be straight, that no more than 40
percent of the total shaft length is straight, and that the average rate of
shaft taper including straight portions of the shaft is not less than 0.06
inches per foot(1.5 mm per 300 mm)nor more than 0.16 inches per foot(4.0 mm per
300 mm).
Ensure that
the full design strength of the pole shaft section in bending can be
transmitted through the base plate into the transformer base or the anchor
bolts without permanent bending of the base plate or failure of the pole shaft
to base plate connection.
Ensure that
there is a AJ@
hook inside the pole just below the top on which to hang the pole and bracket
cable support assembly.
Ensure that
nonstructural castings for aluminum poles, including the pole cap are of ASTM B
26/B 26M or B
108, Alloy S 5 A, Condition F.
Ensure that
steel poles and bracket arms are hot dipped galvanized after fabrication in
accordance with the requirements of 711.02.
Furnish
aluminum poles and bracket arms in natural aluminum with a satin brushed
surface.
Ensure that
each light pole is identified by a raised or engraved marking applied to the
edge of the base plate which identifies the manufacturer and the year that the pole
was manufactured and that such marking remains legible after the pole has been
galvanized.
Ensure that
bolts, nuts, washers and other fasteners used to assemble the light pole are of
galvanized steel conforming to 711.02,
stainless steel conforming to ASTM A
320/A 320M (AISI‑300
series) or silicon bronze conforming to ASTM B
98M (B 98).
Ensure that
each non-frangible steel transformer base is capable of transmitting the design
dead, live, ice and wind loads of the light pole to be mounted on it to the
foundation without failure or permanent deformation, has a flush door
permanently attached by means of a top‑mounted continuous stainless steel
hinge, and is made from steel conforming to ASTM A36/A
36M hot dip galvanized after fabrication.
Ensure that each frangible aluminum transformer base is capable of
transmitting the design dead, live, ice and wind loads of the light pole to be
mounted on it to the foundation without failure or permanent deformation, has a
flush aluminum door permanently attached by means of a top‑mounted
continuous stainless steel hinge, and bears easily found and read durable
labeling as to which AASHTO
frangibility criteria the base meets. Ensure that the base has been tested and
accepted by the FHWA as
complying with the 1985 AASHTO
frangibility requirements
Ensure that
the bolts and nuts used to fasten the base plate of the pole to the transformer
base are heavy hex conforming to ASTM A
307 and galvanized in accordance with 711.02. When either the top or the bottom of an
aluminum transformer bases is to be fastened against non‑galvanized
steel, ensure that both the steel and the aluminum mating surfaces have been
coated with a heavy film of zinc rich paint.
Ensure that
the anchor bolts are steel with 55,000 psi (380 Mpa) minimum yield strength,
that the threaded ends of the bolts and nuts are galvanized in accordance with 711.02 for at least 2 inches (50
mm) beyond the threads and that the nuts are capable of developing the full
strength of the anchor bolt and are galvanized in accordance with 711.02.
B.
Ensure that
the luminaire lowering device (consisting of the luminaire ring, the head
frame, the winch, the power cables and all miscellaneous mechanical and
electrical equipment mounted in or on the pole) and the pole are compatible
with each other.
1. Luminaire Ring. Ensure that the luminaire ring assembly is fabricated from steel which
conforms to ASTM A
36/A 36M and that the ring is fitted with a separate 2 inch (50 mm) nominal
steel pipe mounting arm directly attached to the ring for each luminaire.
Ensure that
the luminaire ring is supported by three wire ropes equally spaced around the
ring. Ensure that the three wire ropes
are of the same material and construction.
Ensure that the wire rope for this purposed is 3/16 inch (5 mm) minimum
diameter and either galvanized steel hoisting cable or aircraft grade stainless
steel control cable composed of 7 strands of 19 wires each. Ensure that each
wire rope support cable is connected to the ring by a corrosion resistant
device that will allow the connection to develop the full breaking strength of
the wire rope while permitting ready adjustment of the length of the wire rope
to level the ring. Ensure that the ring
is equipped with a minimum of three spring loaded roller tipped centering arms
equally spaced around the ring that are in continuous contact with the pole
shaft and that the guide arm rollers are of a nonabrasive, water resistant
material.
Ensure that
the luminaire ring is equipped with three positive latching devices equally
spaced around the ring that latch to the head frame supporting the ring in the
raised position allowing tension to be removed from the lifting cables. Ensure
that all moving parts of each latching device are part of the ring portion of
the latch assembly and that each latch assembly incorporates a reflectorized
flag that is clearly discernible from the ground when the ring is latched to
the head frame. Ensure that the latching
sequence shall not exert a horizontal force sufficient to cause an excess of 4
g's acceleration upon the luminaires.
Ensure that
the luminaire ring is equipped with a NEMA
4 corrosion resistant junction box for the connections between the main power
cord bringing power to the ring and the separate power cords for each
luminaire. Ensure that each power cord
has copper conductors of adequate size and insulation, that each power cord is
of suitable construction, and that each power cord enters the junction box
through a weather tight cord connector. Ensure that there is a cord support
capable of withstanding a load of 1-1/2 time the weight of the main power cord
without damage to the cord transmitting the weight of the main power cord
directly to the ring. Ensure that there
is a weather tight power inlet on the luminaire ring which allows the main
power cord in the base of the tower to connect to the ring when the ring is in
the lowered position. Ensure that the
junction box is equipped with a 600 volt class terminal block for the
connections between the main power cord, the luminaire power cords and the power
inlet cord. Ensure that each luminaire
ring is identified by a raised or engraved marking applied in a prominent
location which identifies the manufacturer and the year that the ring was
manufactured and that such marking remains legible after the ring has been
galvanized
2. Head Frame Assembly. Ensure that the head frame is fabricated from
steel which conforms to the requirements of ASTM A
36/A 36M. Ensure that the head frame assembly is equipped with pulleys for
the wire ropes hoisting cables and rollers for the main power cord to the
luminaire ring. Ensure that each
hoisting cable sheave has a tread diameter of at least 20 times the cable
diameter for galvanized cable and 25 times the cable diameter for stainless
steel cable, that the groove for the hoisting cable has a semi‑circular
in cross section with a radius of one‑half the cable diameter plus 1/64
inch(0.4 mm), that the sheave has an oil‑impregnated bronze bushing and
that the shaft on which the sheave turns is of stainless steel. Ensure that the rollers for power cord run on
AISI 304 stainless steel
shafts between cold‑rolled steel plates. Ensure that bending radius of
the power cord is not less than 7 inches (180 mm). Ensure that keeper bars have been provided
over the power cord and ring support cables to keep them in their respective
tracks. Ensure that a guide is provided
to separate the individual cables as they pass between the head frame and the
top of the pole. Ensure that the head
frame mechanism is protected from the weather by a domed cover of either copper
free spun aluminum or fiberglass. Ensure
that each head frame is identified by a raised or engraved marking applied in a
prominent location which identifies the manufacturer and the year that the head
frame was manufactured and that such marking remains legible after the head
frame has been galvanized.
3. Transition Plate. Ensure that there is a transition plate
between the ring support cables and the main hoisting cable. Ensure that the luminaire ring support cables
are secured to the transition plate by shop applied, swage‑type fittings
designed to develop a connection strength equal to the breaking strength of the
cable and prevent abrasion of the cable by the transition plate. Ensure that there is a cord support capable
of withstanding a load of the weight of the main power cord plus a wind load on
the cord equal that of a 30 mph (48 km/h) wind perpendicular to the full length
of the cord without damage to the cord connecting the main power cord to the
transition plate.
4. Hoisting Winch. Ensure that the winch is of cast iron and
steel construction with an integral enclosed lubricant bathed worm and gear
drive having a reduction great enough to be self‑locking. Ensure that the winch has a pulling capacity
at least five times greater than that required to lift the load. Ensure that the winch drum diameter is not
less than 4 inches (100 mm), that the drum flange diameter is at least 3 inches
(75 mm) greater than the diameter of the drum.
Ensure that there is a cable guide or follower to prevent cable buildup
at the ends of the winch drum. Ensure that the support plate for the winch
bears a durable tag which identifies the manufacturer, manufacturer=s model and year of manufacture for the
lowering device.
6. Connection of Tower to Lighting Circuit. Ensure that there is a separate terminal block for each conductor of the
supply circuit in the base of the tower, and that there are enough spaces on
the blocks to allow the incoming circuit to split into three outgoing
directions in addition to the feed to the tower itself. Ensure that the terminal block has set screw
style terminations, sized for #4 AWG
- #1/0 AWG
for the incoming and out going lighting circuit and #12 AWG
- # 10 AWG
for the tower wiring. Ensure that there
is a circuit breaker in a NEMA
4 enclosure located electrically after the terminal blocks for the lighting
circuit and before the power cord leading up the tower to the luminaires. Ensure that the breaker enclosure is
internally mounted and that the breaker is readily accessible through the tower
hand hole. Ensure that the circuit
breaker is a bolt on design, sized at 15 amperes with a minimum interrupting capacity
of 14,000 amperes for 480 volt circuits or sized at 20 amperes with a minimum
interrupting capacity of 10,000 amperes for 240 volt circuits and is of a
single handle rather than a tied handle design with one pole for each line or
phase conductor. Ensure that cord connector, plug and inlet on the ring for
electrical power to the luminaires are NEMA
L8-20 devices for 480 volt systems or are NEMA
L6-30 devices for 240 volt systems. devices
7. Operating Manual. Furnish a complete manual including
instructions on installation, operation and maintenance for each lowering
device, winch assembly and portable power winch drive unit.
8. Shaft. Ensure that shaft of the tower is of not more than four round or
multi-sided tapered steel sections for towers up to and including 100 feet (30
m), five sections for towers over 100 feet (30 m) up to and including 120 feet
(37 m), and six sections for towers over 120 feet (37 m). Ensure that the shaft is of steel having a
minimum yield strength of 55,000 psi (379 MPa).
Ensure that the shaft sections are joined by telescoping the bottom of
the upper section over the top of the lower section for a minimum length of 1
1/2 times the external diameter of the bottom of the upper section or two feet
(0.6 m) whichever is greater and driving the joint tight. Ensure that the sections have been pre‑fitted
and match‑marked at the factory. Ensure that the inside surface of the
shaft is relatively smooth and that there are no more than two longitudinal
welds which shall be made by automatic electric arc welding. Ensure that the longitudinal seam welds have
complete penetration, are of uniform density, are no thinner than the shaft
material nor no more than 20 percent thicker than the shaft material. Ensure that the base plate is fabricated from
steel which conforms to the requirements of ASTM A
36/A 36M and that the shaft is joined to the base plate using the American
Welding Society
prequalified joint TC‑U4a‑S or TC‑U4c‑GF. Ensure that the hand hole in the shaft is
properly reinforced to avoid stress risers and that the reinforcements 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 all welds in the
shaft satisfy AWS
D 1.1 Structural Welding
Code Article 9.25.3 for tensile stress when tested either by the ultrasonic
method or by an approved alternate method, and that certified results are
furnished to the Laboratory. Ensure that
the door is fabricated from the same type steel as the shaft, is attached with
a continuous stainless steel hinge having non-removable stainless steel hinge
pins, fits the opening closely, and is securely held shut. Ensure that there are provisions for
padlocking the handhole door closed and that each tower has been furnished with
a vandal resistant padlock having a bronze or brass lock body and a corrosion‑protected
steel shackle keyed to the key number specified by the maintaining agency. Ensure that there are two holes, tapped
1/2-13, 180 degrees apart provided at the base of the tower for the grounding
cables. Ensure that the shaft shall be
hot dipped galvanized after fabrication in accordance with the requirements of 711.02. Ensure that each shaft is identified by a
raised or engraved marking applied to the edge of the base plate which
identifies the manufacturer and the year that the shaft was manufactured and
that such marking remains legible after the pole has been galvanized.
9. Anchor
Bolts and
Nuts. Ensure that each anchor bolt is steel conforming to ASTM F1554,
Grade 55, and galvanized in accordance with 711.02. at least 2 inches (50 mm)
beyond the threads. In lieu of a bent
end, an anchor bolt with the lower end threaded and inserted into a steel plate
of approved size and thickness which has been drilled and tapped to receive the
anchor bolt may be furnished. Ensure
that the nuts used with each anchor bolt are capable of developing the full
strength of the anchor bolt.