Wisconsin WisDOT Standard Specifications (within FDM) — Section 660

Effective with the December 2018 Letting 493 2019 Standard Spec ifications Section 660 High Mast Lighting

660.1Description

(1)This section describes constru cting a caisson or pile foundati on for a high mast light tower, and

providing a high mast lighting tower.

660.2Materials

660.2.1 General

(1)Furnish materials conforming to the following:

(2)If not furnished as part of an as sembly, use stainless steel t hreaded fasteners.

(3)Use grade A, A-FA, A-S, A-T, A-I S, A-IP, or A-IT concrete conf orming to 501 as modified in 716.

Provide QMP for class II ancilla ry concrete as specified in 716. 660.2.2 Pole Shafts

(1)Furnish pole shafts constructed of structural steel conforming to ASTM A709 grade 50 or engineer-

approved equivalent and zi nc coated conforming to ASTM A123. Furnish pole shafts with a consistent taper from bottom to top, excep t the lower section may be expan ded to accommodate the required apparatus. Furnish poles constructed in 40- foot to 50-foot sections using single thi ckness steel plate, except the length of the top section may be shorter to provide the required pole height. Provide the engineer with 3 copies of mill tes t reports that show the material used in pole shafts, anchor bases, and anchor rods conforms to this specification.

(2)Provide a reinforced access door opening in the base of the po le shaft that secures with a cover.

Furnish a cover made with stainless steel hinges that bolts shu t with stainless steel hex bolts and is weather tight. Fit the cover with a stainless steel padlock has p and install a de partment-furnished padlock.

(3)Secure the opening below the base plate with a stainless steel or galvanized steel rodent screen.

(4)Design the base plate so water does not accumulate on the top surface of the base plate inside the

pole.

(5)Before zinc coating of the pole or base plate, number each anc hor rod hole in sequence on the base

plate or around the bottom of t he pole. Locate the numbers so they are not obscured by the zinc coating or covered by installed nuts. 660.2.3 Anchor Rods, Templates, Washers, and Nuts

(1)Attach the pole to the concrete base with at least 8 anchor ro ds. For each rod, furnish 2 nuts for

securing the bottom anchor plate- template, a leveling nut, bott om washer, top washer, and 2 top nuts. Do not use lock washers.

(2)Furnish anchor rods conforming to ASTM F1554 grade 55 and Supplementary Specification S4, ASTM

A563 heavy hex nuts, and ASTM F436 washers.

(3)Furnish anchor rods with the top 12 inches and bottom 6 inches having a Unified National Radius roll

thread.

(4)Furnish anchor rods, washers , leveling nut, and 2 top nuts hot -dip zinc coated conforming to ASTM

A153, class C, supplemented by ASTM F2329. As a minimum, zinc coat the top threaded portion of the rod plus one inch.

(5)Furnish a steel top template and a steel bottom anchor plate-t emplate as part of each anchor

assembly. Provide a top template of sufficient gauge to hold th e anchor rods securely in position at the top, and resist racking or twisting during the pour. Remove the top template after the concrete has set. Use a 1/2-inch-thick bottom ancho r-plate template and secure it to each anchor rod. Do not weld templates to anchor rods. Insta ll anchor rods and templates conforming to plan details. 660.2.4 Lowering Device

(1)Equip the poles with a mechanica l lowering system that allows servicing the luminai res and associated

electrical and mechanical appara tus from the ground. Furnish lo wering devices from a department- approved series and manufacturer a nd with a 10-year warranty ag ainst failure of its components.

Effective with the December 2018 Letting 494 2019 Standard Spec ifications (2) When fully raised, provide a me thod of securing the luminaire ring to the fixed head assembly. Show either a bottom latch or a top latch system for securing the lu minaire ring on the drawings submitted for the engineer's review.

(3)Design top latch systems to pro vide the operator with a way to determine whether the raising

operation is complete and the lu minaire ring is secure. The ope rator observing clutch slippage does not meet this requirement.

(4)If securing the luminaire ri ng to the fixed head assembly, pro vide a means to relieve tension from the

lowering cables onto the winch assembly. Provide strain relief devices that allow removing the winch assembly for servicing while the luminaire ring is fully lowere d and blocked up.

(5)Ensure that the lowering devic e operates off one leg of the li ne feeding the pole and uses a portable

drive motor that plugs into the line.

(6)Provide adjustable torque limiters in the winch system or driv e motor to prevent excessive stress on

the lowering cables, and to allow for proper tensioning against the fixed head assembly.

(7)For systems where the lifting cables meet on a transition plat e, provide access to t he top of the plate

from the hand-hole, whe n the ring is fully raised, to allow cable tension adjustment. Furnish 7x9 stainless steel lifting cables. D o not use antirotational cables. 660.2.5 Fixed Head Assembly

(1)The fixed head assembly shall in clude no moving parts, except for the necessary pulleys, rollers, and

sheaves that guide the lowering ring, lowering cables and electrical conductors during the lowering operation. For the fixed head assembly, use chromated or stainless steel. Use pulleys, rollers, sheaves, and associated bearin gs, bushings, and shafts made of corrosion-resistant materials. Use permanently lubricated and s ealed bearings and bushings.

(2)For systems that use a roller assembly to support the power ch ord at the head frame, use an

assembly made of rollers mounted between highly corrosion resis tant steel plates. Ensure the power chord rides on at least 6 rollers made from acetate resin mounted on stainless steel pins. Furnish a roller assembly with a minimu m bending radius of 7 inches. If u sing a pulley, use a minimum radius of 8 inches.

(3)Furnish stainless steel lifting cable sheaves with a minimum r adius of 3 inches. Use sheaves with

permanently lubricated bronze bearings and a stainless steel pi n. For the depth of the vee on the pulley, use at least the diameter of the cable. Provide guards to prevent the cable from lifting off the pulley.

(4)Protect all of the head assembly with covers, screens, or shields, to prevent entranc e of dirt, moisture,

ice accumulation, nesting of ins ects or birds or other contamin ants that may harm the head assembly and operation of the lowering device. 660.2.6 Luminaire Ring

(1)If the plans show unused luminai re tenons, install a counterweight equal in weight to a luminaire, and

close the unused tenon o ff with a threaded cap.

(2)Furnish either a stainless steel , or a structural steel zinc c oated ring. Zinc coat conforming to ASTM

A123.

(3)Furnish a luminaire ring centering system designed to protect both the pole shaft and the luminaire

ring assemble and with a 10-ye ar warranty against failure of it s components. Ensure that the system operates successfully in winds up to 30 mph. Also ensure that t he ring can travel smoothly and unimpeded over the entire length of the pole shaft. 660.2.7 Aviation Lights

(1)Furnish aviation lights, associa ted electrical circuits, and d etailing the plans show.

660.2.8 Lightning Rod

(1)Furnish silver tipped lightning rod of engineer-approved desig n mechanically attached to the pole shaft

or head assembly, and electrica lly connected to the pole shaft. 660.2.9 Miscellaneous Fittings

(1)Use stainless steel miscellaneo us fittings, fasteners, and har dware.

660.2.10 Drive Motor Set

(1)Furnish a universal portable motor system compatible with the particular lowering system used and

capable of powering that system for any combination of the pole height and luminaire load configuration. Ensure that the dr ive motor set consists of a 12 0 volt AC motor, a mat ching transformer, power connection cables, and a motor control switch.

Effective with the December 2018 Letting 495 2019 Standard Spec ifications 660.3 Construction 660.3.1 Design Calculations and Shop Drawings

(1)Design high mast lighting support structures conforming to AAS HTO Standard Specifications for

Structural Supports for Highway Si gns, Luminaires and TrafficS ignals, 6th Edition, and Interim Revisions. Design the completed unit to withstand static and dy namic loads the unit will be subjected to in service. Use a design loading that provides for installation of the full complement of 6 luminaires and the operation of the lowering device.

(2)Design the high mast light tower and foundation using a design life of 50 years with a wind importance

factor of 1.00. Design to withsta nd a 3 second gust wind speed of 90 mph. Do not use the alternative method for wind pres sures described in appendix C of the AASHTO standard specifications.

(3)Design the pole and its connections, including but not limited to the welds and an chor rods, to the

AASHTO fatigue category I criteri a. Use the fatigue importance factors for categor y I tabulated in the AASHTO standards.

(4)Use poles that are round or pol ygonal in section, and designed so that the horizontal pole deflection in

any direction at the design wind velocity with a gust effect fa ctor does not exceed 5 percent of the pole height. Measure the horizontal deflection from the vertical pla ne passing through the centerline of the pole at its base. The pole height is the distance from the bottom of the base plate to the top of the shaft, excluding the fixed head assembly.

(5)Submit for review, 2 sets of structural design calculations fo r each type of pole and anchor assembly

showing that the design conforms to the specifications. Submit to the engineer for review, 5 complete sets of shop drawings and component lists, showing the pole, it s alloy identification, plate thickness, weld details, weld procedures, a nd tolerances; the anchor assembly; the fixed head assembly; the lowering device; luminaire ring; other required apparatus; and tightening procedures for bolted connections other than the mast-to-anchor assembly connection. Ensure that design calculations and shop drawings are signed, sealed, and dated by a professional e ngineer registered in the state of Wisconsin.

(6)If any substantial changes from p reviously submitted calculations and drawings are made, submit the

revisions to the engineer for review. 660.3.2 High Mast Foundations 660.3.2.1 General

(1)If any twisting, racking, or other movement of the anchor rods out of plumb, projection, or pattern, or

any damage to the threads exists the engineer will reject the e ntire base.

(2)Maintain the clear distance between the soil and the reinforci ng steel cage using the means the plan

detail shows. Do not weld the an chor rods to each other, the re inforcing steel cage, and the templates or to any other component of the foundation. Protect anchor rod threads above the top of the foundation level from concrete splash.

(3)Place the concrete in one conti nuous pour without construction joints. Cure exposed portions of

concrete foundations as specified in 502.3.8.1 . Wait until the concrete has attained 3500 psi compressive strength or 7 equivalent days as specified in 502.3.10 before erecting the tower. 660.3.2.2 Augured Foundations

(1)Construct as specified for concrete bridges in 502.3 .

(2)Produce the holes for foundations by auguring. The contractor may install a suitable casing at the

same time as the auguring. Make the augured hole vertical and uniform in section. Fill irregularities in the cylindrical surface of uncased holes outside the nominal di ameter with concrete. If the top of the hole caves in, the engineer may require the contractor to auger the hole deeper to obtain the required depth and section. 660.3.2.3 Pile Type Foundations

(1)Drive piles as specified in for steel piling in 550.

660.3.3 Pole Shafts 660.3.3.1 General

(1)Weld or telescope pole sections together so that the splicele ngth is equal in strength and rigidity to

the remainder o f the pole shaft.

(2)Before and during erection, exa mine the pole sections for scra tches and mars, and tr eat them by first

removing rust and then coating the damaged area with an enginee r-approved cold zinc coating compound. Remove markings placed on the pole for purposes of fa brication, shipping, or erection.

Effective with the December 2018 Letting 496 2019 Standard Spec ifications (3) After erecting and plumbing, ensure the completed pole, with a ttachments, appears straight and vertical throughout its height, e xcept if distorted by the effe cts of wind or sunlight or both. Do not perform the final plumbing of the pole on a sunny day. 660.3.3.2 Telescoped Poles

(1)Overlap the sections at least 1 1/2 times the outside diameter of the larger section at the joint. Test fit

the sections at the factory to ensure pole straightness and acc uracy of the mating surfaces.

(2)In the field, measure the join t overlap as follows: On the mal e end, make a chalk mark at a distance

from the end equal to the required overlap plus one foot. Then make the connection so that the distance from the end of the female section to the chalk mark i s one foot.

(3)Upon erection, ensure the surf ace of the telescoped sections p resent a permanent barrier to moisture

entering the faying surfaces. 660.3.3.3 Welded Poles

(1)Shop weld pole shafts and attachments conforming to AWS D 1.1, Structural Welding Code - Steel

and as follows:

1.Use complete-penetration welds for pole sections joined by circumferential welds and inspect all welds.

2.Inspect all circumferential welds, all full penetration wel ds, and a random 25 percent of partial penetration

longitudinal welds.

3.Inspect full penetration welds by either radiographic or ul trasound inspection methods.

4.The contractor may inspect p artial penetration welds by the magnetic particle method.

5.Make longitudinal welds to 60 percent depth penetration, ex cept in any location within 6 inches of a

circumferential weld or within the joint overlap area plus 6 in ches, then make these welds to 100 percent depth penetration.

6.The contractor may repair a circumferential weld once witho ut the engineer's permission.

7.Ensure that other weld repairs are engineer-approved.

(2)Do not weld in the field without the engineer's written approval. The engineer will only allow field

welding for repairs in noncritical locations and when a departm ent-approved individual competent to perform inspections is present during the welding. Perform fiel d welding using personnel qualified under AWS D 1.5, Bridge Welding Code for steel. 660.3.4 Anchor Assembly

(1)Secure masts to anchor assemb lies conforming to the procedures enumerated in department form

DT2321 . Complete department form DT2321 for each structure. Indicate t he parties resp onsible for the installation and submit t he form to the engineer for inclusion in the permanent project record. 660.3.5 Lowering Device, Head Assembly and Luminaire Ring

(1)Construct conforming to plan details and manufacturer's instru ctions.

(2)Before erecting the fixed head assembly, the engineer will ins pect it on the ground.

660.3.6 Acceptance

(1)Before acceptance each high mast lighting tower demonstrate to the engineer that electrical and

mechanical systems function properly.

660.4Measurement

(1)The department will measure the High Mast Foundation bid items as a single lump sum unit for each

foundation acceptably completed.

(2)The department will measure the Hi gh Mast Lighting Tower bid i tems as a single lump sum unit for

each tower acceptably completed.

660.5Payment

(1)The department will pay for measured quantities at the contrac t unit price under the following bid

items: ITEM NUMBER DESCRIPTION UNIT

660.0100 High Mast Foundation (location) LS

660.0200 High Mast Lighting Tower (location) LS

(2)Payment for the High Mast Foundation bid items is full compens ation for providing steel piling and

concrete, including extra concre te required around uncased holes, for reinforcing steel; for anchor rods, templates, nuts, and was hers; for electrical conduit; for excavating and auguring; and for backfilling, disposing of surplus material, and restoring the s ite.

Effective with the December 2018 Letting 497 2019 Standard Spec ifications (3) Payment for the High Mast Lighting Tower bid items is full compensation for providing the pole; for providing a drive motor set, fi xed head assembly, luminaire rin g, and lowering mechanism with associated mechanical and electr ical components, an electrical grounding system , the pole sequence and circuit identification plaques, nuts, and washers, fittings, hardware, aviation lights, and lightning rod; for connecting to the electrical distribution system; and for providing slugging wrenches for each size of nut.

(4)The department will pay separatel y for luminaires under the Lu minaires bid items of 659.

Effective with the December 2018 Letting 498 2019 Standard Spec ifications Section 661 Temporary Traffic Signals and Temporary Ramp Meters

661.1Description

(1)This section describes providing, maintaining, and removing br idge and intersection temporary traffic

signals, and temporary ramp meters.

661.2Materials

661.2.1 General

(1)Furnish control cabinet, signal c ontroller, and control equipment. Provide a cabinet with a Corbin #2

door lock and an access door tha t allows placing the controller in emergency flash. Provide keys to the access door to the engineer and la w enforcement agencies as req uired. Also provide a manual control accessible by the police. Supply a controller capable of executing the timing program supplied in this contract for this te mporary traffic signal. Test traffic signal control cabinets before installation. The department may request timing inte rval changes during the proje ct as required by construction or traffic conditions. Make engineer- requested changes within 24 h ours.

(2)Ensure that the signal contro ller is capable of operating with a non-intrusive detection system and

emergency vehicle preemption (EVP) system. Furnish a NEMA monit or for the controller. Test the monitor with an automated progra mmed testing system. Test annua lly if used for more than one year. This test verifies that the monito r complies with the intersection requirements. Attach a copy of the monitor test report to the monito r, and provide a copy to the a uthority having jurisdiction of the intersection.

(3)Provide the temporary electrical service for temporary traffic signals according to the requirements of

the applicable electrical utility. Provide an affidavit to the electrical utility in a timely manner so the electrical utility can schedule service turn on. If the control cabinet is not mounted on the electrical service pole, add a second electrical service disconnect to the outside of the control cabinet for the convenience of emergency pers onnel. If required, install the el ectrical service.

(4)Furnish traffic signal components from the department's QPL and conforming to 658.2 . The contractor

may furnish engineer-app roved used components.

(5)Provide equipment to establish detection zones as the temporar y signal plans show. Submit a list of

proposed equipment and locations to the engineer for approval; do not install before the engineer approves. 661.2.1.1 Wood Poles Class 4

(1)Furnish jack pine, Norway pine , or western red cedar poles con forming to ANSI O5.1.

(2)Trim or shave poles by machine or hand to leave a smooth surfa ced pole exterior.

(3)Use marking code letters to provide the minimum information as follows: supplier's name or

trademark, plant location and year of treatment, code letters d enoting the pole species and preservative used, and class numeral and pole length. The engin eer may refuse the pole upon inspection depending on the phy sical condition of the pole.

(4)Burn above information legibl y, permanently, and squarely on t he face of each pole, 10 feet +/- 2

inches from the butt of each pole. Make these letters not less than 5/8 inch high.

(5)Brand, hammer-stamp, or die-stam p these same 4 items into the bottom of each pole butt. Make these

letters not less than 5/8 inch high. Attach a metal tag with these same 4 items to the wood pole.

(6)Provide a definition sheet explaining code letters and numbers to the engineer.

661.2.1.2 Cable

(1)For traffic control cable, furn ish 600 volt AC 14 AWG, solid c opper conductor, according to IMSA 20-1.

(2)Wire sizes called for under the various Cable bid items are mi nimum requirements; the department will

determine if larger wire size is needed to keep the voltage dro p below 5 percent. 661.2.1.3 Guy, Span, and Messenger Wire

(1)Furnish 3/8-inch nominal diameter, 7-strand, zinc-coated steel wire conforming to ASTM A475, with a

utility grade breaking strength of 15,400 pounds. 661.2.1.4 Guy, Span, and Messenger Wire Mounting Hardware

(1)Furnish engineer-approved hardware consisting of the following : machine bolts, 1 1/2-inch curved

square washers, straight to angl e thimbleye bolts, thimble eyen uts, angle thimbleye eyes, ovaleye bolts, standard eye nuts, twiste d loop dead-end grips, 3 bolt g uy clamps, bolted deadends, serving sleeves, messenger hangers, drive hooks, sidewalk guy fittings, guy wire thimbles, guy strain insulators, guy safety markers, a nchor bolts, guy adapters, exp anding anchors, and screw anchors. Remove screw anchors upon completion.

Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 502–506 of 601.

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659 Lighting

661 Temporary Traffic Signals and Temporary Ramp Meters