732TRAFFIC SIGNAL MATERIAL

731.08 Flexible Conduit. Furnish galvanized steel flextube conduit with a

waterproof PVC jacket according to UL 360 for wiring of lighted signs. Conduit must be labelled clearly as Sunlight Resistant, meeting the requirements of NEC Art. 300 and 350. Furnish materials according to the Department’s QPL.

731.10 Timer with Enclosure. Furnish a timer that allows automatic sign

operation for a minimum of 8 times per day an d for selected days of the week. Furnish a solid state timer with a back -up battery to maintain timekeeping and program memory for at least 48 hours. Furnish a battery with a design life of 10 years under field conditions when power failures over the 10 -year period would accumulate to 100 days. If installed outdoors, house the timer within a lockable, weatherproof, corrosion -resistant enclosure. Furnish each enclosure with at least one padlock complying with 631.06. Furnish materials according to the De partment’s TAP List . 732 TRAFFIC SIGNAL MATERIAL

732.01 Vehicular Signal Heads, Conventional. Ensure that vehicular traffic

signal heads conform to the ITE “Vehicle Traffic Control Signal Heads” standard. In conformance with the above standard, provide signal heads that are of cast nonferrous corrosion resistant metal. Traffic signals consist of specified assemblies of optical sections containing 12 - inch (300 mm) diameter lens opening, a housing, a door frame with stainless steel hinge pins and latching device, visor, wiring, and includes LED lamp in accordance with 732.04. Retention hardware for LED lamps, if sharing threaded hole with visor hardware, shall consist of minimum 1/2 -inch (13 mm) long, set screw with retaining tab and captive wingnut or hex nut. All hardware shall be stainless steel and set screw shall be inserted into signal section door using visible, semi -permanent threadlocking compound. All hardware used to join optical sections together shall be stainless steel. Furnish signal heads with required mounting hardware. Furnish signal face orientation to traffic by serrated rings or other devices on housing sections and mounting hardware. Permit adjustment in increments not greater than 5 degrees of rotation and not affected by wind gusts when locked. Furnish galvanized steel or aluminum spacers and drop pipes 1 1/2 inches (38 mm) nominal pipe size (1.90 inch (48 mm) actual diameter). Ensure that disconnect hangers have at least twelve terminals unless a greater number is required Tethered heads shall use ¾ -inch unpainted cast aluminum span wire clamps and cable entrance adapters w ith integral tri-studs (no tri -stud inserts), stainless steel hardware, and a single steel -reinforced mounting hole. Free -swinging heads shall use cast iron span wire clamps and cable entrance adapters with tri -studs. Tri -studs shall be secured to the head using stainless steel nylon -insert or distorted thread locknuts. A neoprene gasket placed under the 732.02 863 clamp washer in the top signal section shall effectively seal the entrance adapter on the signal to make a waterproof connection and shall have a minimum t hickness of 3/32 inch. The inside surface of the visors shall have a finish of flat black. All other exterior surfaces of the signal head and hardware shall have a finish of Federal Yellow or Gloss Black to closely agree with Federal Standard 595, Color 1 3655 or Color 17038, as specified in the plans. The coating system used shall be durable, uniform, and weather resistant. For polycarbonate signal heads, obtain proper exterior colors by use of colored plastic rather than painting. Furnish materials accord ing to the Department’s QPL .

732.02 Vehicular Signal Heads, Optically Programmed, 12-inch (300 mm)

Lens. Ensure that the signal sections conform to applicable portions of the ITE standard and 732.01. Furnish and mount optical sections with a 12 -inch (30 0 mm) lens size alone or in combination with additional sections of optically programmed or conventional optics types to form signal faces and heads. Furnish an optically programmed signal section that includes an LED lamp. Balance adjusters, used only if specified, shall have a splined eyebolt design and splined external clamping body. All assembly hardware shall be stainless steel. Furnish a visor with each signal section. Cable entrance adapters shall be of the tri -stud type with stainless steel hardwa re. A neoprene gasket placed under the clamp washer in the top signal section shall effectively seal the entrance adapter on the signal to make a weatherproof connection and shall have a minimum thickness of 3/32 inch (2.5 mm ).. Furnish materials acco rding to the Department’s QPL .

732.04 Signal Lamps.

732.05 Pedestrian Signal Heads . Furnish pedestrian signal heads that conform

to the ITE specifications . Ensure that the signal heads alternately display the symbol of an upraised hand in Portland orange and the symbol of a walking person in white light. Do n ot furnish outline style symbols . Furnish material for housings that consist of cast or sheet, corrosion resistant, non -ferrous metal or polycarbonate plastic, as specified in the plans. Adequately reinforce the housings . Ensure that the lens frames are non-ferrous metal or polycarbonate material. Ensure that the lenses are glass or ultraviolet and impact -resistant plastic and display the legend with translucent symbols within an opaque black background. Seal the lens to the door frame by the use of a we atherproof seal. Furnish an elastomeric gasket between the door frame and housing to ensure a dust and weatherproof seal. Use a signal head design that provides adequate dissipation of heat. Furnish pedestrian signal heads with required mounting brackets. Furnish either pipe type brackets or, when compatible with the mounting position required by the plans, two -piece hinged type brackets that support the signal head close to the pole. Furnish 1 1/2 -inch (38 mm) galvanized steel pipe brackets with necessar y fittings and adapters, and that are one -way or two -way as required. Orient the signal face to crosswalks by selective meshing of serration rings or other devices provided on housings and mounting brackets. Make adjustment in increments not greater than 5 degrees of rotation and that is not affected by wind gusts when locked. Furnish two -piece hinged brackets of cast aluminum with stainless steel hinge pins, and when closed will be secured by a tamperproof bolt. Ensure that the 732.05 868 mounting incorporates a t erminal block for quick disconnect of field wiring. Ensure that the mounting design permits attachment to the pole by banding, bolting or by lag screws in the case of wood poles. Finish signal exterior surfaces black with enamel coating. Finish interior s urfaces of visors flat black. For polycarbonate signals, proper exterior colors shall be obtained by use of colored plastic material rather than painting. Also for polycarbonate signals; pipes, spacers and fittings constructed of polycarbonate plastic may be used in lieu of galvanized steel or aluminum. Furnish pedestrian signal head types according to Table 732.05 -1. TABLE 732.05 -1 Signal Head Type Symbol Height, Inches, (mm) Light Source A1 A2 6 (152) 9 (229) LED D2 9 (229) LED If specified, furnish the types listed below:

732.06 Pedestrian Pushbuttons. Furnish pushbutton s of sturdy construction

that consist of a base housing and a removable cover. Furnish components that provide a pushbutton with normally open contacts and that include all electrical and mechanical parts required for operation. Ensure that the design of the pushbutton and its associated contacts and housing are sturdy and resistant to mechanical shocks and abuse. Ensure that a concentrated force of 50 pounds (225 N) applied to the button or any exposed portion does not damage the unit or misadjusts the c ontacts. Furnish a housing with a curved back surface for mounting on poles of various diameters. Integrate the curved surface with the housing or supply an adapter with a flat back type housing. Attach the cover assembly to the housing by stainless ste el machine screws, resulting in a weatherproof and shockproof assembly. Furnish a hole threaded for a 1/2 -inch (13 mm) pipe in the housing for conduit attachment purposes. Furnish housing with manufacturers applied external surfaces yellow Color 13655, Federal Standard 595, unless specified otherwise in the Plans. Ensure that the maximum force required to operate the pushbutton is 5 pounds (22.5 N). Furnish a raised or flush pushbutton with a minimum of 2 inches at its smallest dimension. Furnish materials according to the Department’s TAP List .

732.07 Loop Detector Units.

732.08 Loop Detector Units, Delay and Extension Type. Ensure that the loop

detector units of this type comply with the requirements of NEMA TS -1, section 15. Furnish shelf -mounted loop detector units that are powered from 120 volts. Use solid state isolated o utput units for all controller application where directly connected to a solid state digital controller unit. When specified, apply the provisions of 732.07 for possible replacement of multi -channel units with single channel units. Furnish loop detector u nit with an LED or LCD display indication of call strength (∆L/L or equivalent). This display shall be a bar graph or numerical display with at least eight (8) discrete levels indicated. Furnish materials according to the Department’s TAP List . 732.11 871 732.11 Signal Supports . Furnish signal poles and mast arms that are tapered tubes of a true continuous taper. Furnish tubes that are circular or regular polygons with six or more sides. Ensure that any measurements of circular tube diameter at a specific point along the longitudinal axis do not vary by more than 3/16 -inch (5 mm). Ensure that the taper is between 0.54 and 1.3 percent. A rectangular, rounded - corner aluminum Pole Identification Tag with minimum dimensions of 1 x 3 x 0.040 inches shall be attach ed to the pole at a height of 6 inches above the base plate. The Pole Identification Tag shall be clearly and deeply stamped with the ODOT Standard Construction Drawing Number, Design Number, and the fabrication date of the pole (e.g., TC -81.21, DES. 12, 05-12) in characters with a minimum height of 3/8 in. Attach to the pole with four stainless steel 3/16 inch rivets. Fabricate mast arms of the true continuous taper type in two portions joined by overlapping of sections with the overlap being at least 1 1/2 diameters as determined by the largest diameter of the outer portion. Assemble the sections with a 5/8 -inch (16 mm) minimum stainless steel or galvanized steel hex head through -bolt. Ensure that there is not more than one longitudinal, automatically e lectrically welded seam on circular poles. Ensure that the welded seams are neat and uniform in appearance and have a thickness not less than the base material and a bead height not exceeding 1/16 -inch (2 mm). Ensure that the wall thickness at each pole or arm cross -section is of uniform thickness, except at weld beads. Do not place transverse seams or welds on true continuous taper type poles or arms. Weld according to 513.21. After fabrication, hot -dip galvanize poles and arms according to 711.02. Do not use guy rods or truss -type arms. Furnish poles and mast arms with attachment plates and gussets. Assemble using high -strength bolts with the connection developing the full moment -resisting capability of the arm. Do not allow the butt diameter of mas t arms to exceed the nominal diameter of the pole at the point of attachment. Fit poles with a welded -on cast or plate steel base designed to mount on an anchor bolt foundation and ensure that each pole includes the furnishing of anchor bolts and conduit e lls for installation in the foundation. Furnish at least one 2 -inch (50 mm) diameter conduit ell for installation in each foundation. Furnish conduit ells made from steel complying with 725.04; however, if they connect to non -metallic conduit, ensure tha t they are of the same non -metallic material. Use steel anchor bolts conforming to ASTM F1554, Grade 105 and galvanized according to 711.02. Ensure that ends have a steel plate as shown on the plans. Ensure that the poles include a handhole near the base oriented as required. Reinforce the handhole with a welded -on steel frame with a grounding lug and fit it with a cover plate fastene d by stainless steel screws. Ensure that the poles also include a cable and wire support J -hook welded near the top and a removable pole cap. Design poles and arms so their interiors conceal wiring and their mast arms include grommeted wire outlets for t he signal heads. Furnish hanger clamps with clevises on the mast arms for the signal heads as required. Ensure that arm caps are made of steel and cover at least 50 percent of the end area. 732.12 872 Ensure that signal poles combining provisions for roadway lighti ng include an additional handhole located opposite the mast arm flange with the poles’ J -hook located above. Furnish pedestrian pushbutton access holes and blind half couplings for controllers and pedestrian signal heads as required. Plug any unused holes . Furnish certified materials according to Supplement 1094.

732.12 Strain Poles. Furnish signal strain poles for the attachment of span wire

that are steel tapered tubes according to the requirements of 732.11. Ensure that all poles include a removable p ole cap, and messenger wire clamps with clevis and shackle unless otherwise specified. A rectangular, rounded -corner aluminum Pole Identification Tag with minimum dimensions of 1 x 3 x 0.040 inches shall be attached to the pole at a height of 6 inches abov e the base plate. The Pole Identification Tag shall be clearly and deeply stamped with the ODOT Standard Construction Drawing Number, Design Number, and the fabrication date of the pole (e.g., TC -81.21, DES. 12, 05 -12) in characters with a minimum height of 3/8 in. Attach to the pole with four stainless steel 3/16 inch rivets. Furnish anchor bolt foundation type strain poles that include a welded -on cast or plate steel base, bolt covers, a handhole, and a J -hook, as required by 732.11, and that also inclu de at least one 2 -inch (50 mm) cable entrance with a weatherhead and a welded blind half -coupling. Ensure that the poles include the furnishing of anchor bolts and conduit ells for installation in the foundation. Furnish at least one 2 -inch (50 mm) diame ter conduit ell for installation in each foundation. Furnish steel conduit ells that comply with 725.04; however, if they connect to non -metallic conduit, ensure that they are of the same non -metallic material. Furnish certified materials according to Sup plement 1094.

732.13 Wood Poles. Furnish wood poles that conform to ANSI 05.1

“Specifications and Dimensions for Wood Poles”, that are made of Southern Pine or Western Red Cedar, and that are full -length pressure treated according to 725.19.

732.14 Dow n Guy Assemblies. Furnish expanding or screw type anchors

capable of withstanding a guy tension of 8000 pounds (35 kN) when installed in firm moist soil. Ensure that each anchor rod is 5/8 -inch (16 mm) minimum diameter, 8 feet (2.4 m) minimum length galva nized steel with thimble eye. Ensure that all pole and attachment hardware is hot dip galvanized in accordance with 711.02. Furnish 3/8 -inch (10 mm) minimum diameter guy wire that conforms to 732.18 and ensure that all accessories have a rated loading stre ngth equal to or greater than the messenger wire minimum breaking strength. Furnish porcelain strain insulators of the wet process type. Furnish an 8 feet (2.4 m) minimum length guy guard made of impact and ultraviolet light resistant yellow plastic that i s fastened to the guy wire. Furnish materials according to the Department’s QPL .

732.15 Pedestals. Fabricate pedestals for the support of traffic control

equipment of 4 -inch (100 mm) schedule 40 steel or aluminum pipe. Fit the steel 732.16 873 pipe with a welded -on base of plate or cast steel, or when specified thread the steel pipe into a gray cast iron transformer type base. Furnish galvanized steel pedestals according to 711.02. Thread aluminum pipe into an aluminum cast transformer type base. Design pedestal s to mount on an anchor bolt foundation and include the furnishing of anchor bolts and conduit ells for installation in the foundation. Furnish materials according to the Department’s QPL .

732.16 Conduit Risers. Ensure that risers have conduit and fittings according

to 725.04 and the weatherhead is made of aluminum or galvanized ferrous metal and threaded.

732.17 Cable Support Assemblies. Ensure that the cable grip used with cable

support assemblies is of the proper size and strength for the cables and is of the flexible “closed” or “split with rod” type, of stainless steel or tin coated bronze, and equipped with a single “U” eye bale. E nsure that the smallest cable grip permitted has a minimum rated breaking strength of 250 pounds (1.1 kN). Ensure that the slings for cable supports are made from copper clad or galvanized multi -strand steel wire with an overall diameter of not less than 1 /8-inch (3 mm) and a breaking strength of at least 400 pounds (1.7 N). Use thimbles to form eyes at each end of the sling with grooves to match the wire. Adjust the sling to the proper length with the wire at each thimble lapped and secured with split bo lt clamps. Furnish materials according to the Department’s QPL .

732.18 Messenger Wire

732.19 Cable and Wire. Furnish cable and wire meeting the requirements of Table

732.19 1 and rated at 600 volts with conductors of copper unless otherwise

specified. Ensure that the cable or wire jacket is indelibly marked at intervals of not 732.20 874 more than 6 feet (2 m) with nomenclature stating the size, the type, the organization specifying the type, and the manufacturer’s name or trademark. Furnish materials according to the Department’s QPL . TABLE 732.19 -1 CABLE AND WIRE Cable or Wire Number of Conductors Wire Gage Specification or type Conductor Type Notes Signal Cable As specified As specified IMSA 19 -1 IMSA 20 -1 Copper, color coded, stranded Loop detector wire Single conductor 14 AWG IMSA 51 -5 Copper, stranded Loop detector lead-in cable Two conductor 14 AWG IMSA 50 -2 Copper, twisted pair, stranded, shielded Power cable Two conductor As specified UL: RHH/RHW/ USE or HHW, cross linked polyethylene with an insulation thickness of 0.045 inch (1.14 mm) (min.) Copper, stranded [3] Service cable Two conductor (duplex) As specified Aluminum,[1] twisted, stranded Ground Wire Single conductor UL: RHH/RHW/U SE or XHHW, cross linked polyethylene Copper, stranded [4] Loop detector lead-in cable, direct burial As specified 12 or 14 AWG, or as specified IMSA 19 -6 IMSA 20 -6 Copper, stranded Loop detector lead-in cable, Integral messenger type As specified 12 or 14 AWG, or as specified IMSA 19 -4 IMSA 20 -4 Copper, stranded Notes [1] Copper conductors may be substituted [2] ANSI/ICEA Cable shall have: Solid insulations, Full count color coding, 8 -mil shield, and 772 kHz attenuation compliance. All other specifications are manufacturer’s option unless specified. [3] Three -conductor cable may be specified. P ermitted substitution: 2 (or 3) single conductor cable. [4] Minimum size is equal to the power or service cable, whichever is larger.

732.20 Power Service. Furnish risers for power service that are 1 to 1 1/2 -inch

(25 to 38 mm) diameter conduit and fittings according to 725 Furnish weatherheads that are threaded and made of aluminum or galvanized ferrous metal. Include a disconnect switch with enclosure.