2565Traffic Control Signals

2565.1DESCRIPTION

A General This Work consists of providing and installing Materials and electrical Equipment, or installing Department-provided Materials and electrical Equipment, or both to provide a complete, operating traffic control signal system. This Work also consists of providing the following as specified in the Contract:

B Qualifications of Workers ................................................................................................ 2545.1A C Acronyms ........................................................................................................................ 2550.1A Refer to 2550.1, “ Traffic Management System, Description,” for additional acronyms. D Definitions Refer to the ITE, the MN MUTCD, 1102, “Abbreviations and Measurement Units” and 1103, “Definitions,” for the definitions of words and phrases pertaining to traffic control signal systems and related Work. Refer to NEMA Standards Publication for “Traffic Control Systems” for the definitions of words and phrases in conjunction with traffic control signal control E quipment and controller units. Refer to the NFPA 70 National Electric Code, article 100 for additional definitions. For the purpose of the Work specified in section 2565, “Traffic Control Signals,” the Department defines: Abandoned Underground cable or conduit no longer in service and physically disconnected from a system. Bell End The end of a piece of rigid PVC conduit that flares out to allow connection of an additional piece of conduit. Cut Sheet, Catalog Sheet, or Specification Sheet A document showing a finished product including part numbers and an ordering matrix if required. End Bell The rigid PVC conduit fitting that is glued on at the end of a conduit to protect the conductors during pulling operations.

Materials As defined in the 1103,”Definitions,” and including components, products, Equipment, and structural supports for use in performance of the Work for 2545, “Lighting Systems,” 2565, “Traffic Control Signals,” and Chapter 8, “Electrical Systems Materials, section 3801 through 3850. Pedestrian Signal Head A Signal Head, which contains the symbols WALKING PERSON (symbolizing WALK) and UPRAISED HAND (symbolizing DONT WALK), and countdown numbers that is installed to direct pedestrian traffic at a traffic control signal. The head is comprised of a Pedestrian Signal Housing and a Pedestrian Signal Indication that fits within the housing. Pedestrian Signal Housing Polycarbonate housing that protects the light source and other required components. The housing includes an indication mounting door and sun visor. Pedestrian Signal Indication Light Emitting Diode (LED) UPRAISED HAND and WALKING PERSON countdown indication module that is installed within the Pedestrian Signal Housing. Shop Drawing A detailed document showing how a specific product will be fabricated and constructed. This document will also include required Material specifications and requirements. Signal Head An assembly of one or more Signal Sections that is provided for controlling vehicle traffic. This assembly of Signal Sections also includes a backplate (background shield). Signal Section The assembly of a Signal Housing, signal lens, if any, and light source with necessary components to be used for displaying the Signal Indication. The section is comprised of two components; a Signal Housing and a Signal Indication that fits within the housing. Signal Housing That part of a Signal Section that protects the light source and other required components. Polycarbonate housing that protects the light source and other required components and includes a hinged opening (with visor) in which the Signal Indication is mounted. This is one of two components that make up a Signal Section. Signal Indication The illumination of a signal lens or equivalent device. The device is a Light Emitting Diode (LED) indication module that is installed within the Signal Housing. This is one of two components that make up a Signal Section. Source of Power (SOP) The electric utility transformer. Turn-On (Traffic Control Signals) The time the complete traffic control signal system is accepted by the E ngineer and meets the installation, testing, and operational requirements of the Contract. The traffic control signal system must also be placed in automatic operation.

2565.2MATERIALS

A Conduit and Accessories Provide concrete mix No. 3G52 if the Contract does not require a specific mix designation. Construct or replace concrete pavement or base, removed for trenching or construction operations, with concrete mix No. 3G52HE. I Traffic Control Signal Cabinets Install anchor rods, nuts, and washers provided with the traffic control signal cabinets. Only use anodized aluminum pedestal shafts unless otherwise shown on the Plan. Provide Crosswalk Preformed Thermoplastic Ground In Enhanced Skid Resistance, unless the surface is concrete, then provide Crosswalk Preformed Thermoplastic Ground in Contrast Enhanced Skid Resistance.

U Traffic Signs V Traffic Control Signal Cabinet and Control Equipment Provide the traffic control signal cabinet, or other pad-mounted cabinet and control Equipment, as specified in the Contract. W Miscellaneous Materials If the Contract does not specify requirements for Materials and Equipment, provide the Materials and Equipment as approved by the Engineer. Fabricate bent pipe monotube signal Bridges as specified in the Contract. Construct 6-inch thick concrete walks around traffic control signal bases. If in a curb section, concrete walks may include pedestrian curb Ramps. Z Weatherproof, Waterproof Wire Connectors Use weatherproof, waterproof wire connectors listed on the APL, Signals. AA Loop Detector Sealant Material Use loop detector sealant Material listed on the APL, Signals. BB Loop Detector Splices Use loop detector splice encapsulation kits listed on the APL, Signals. Use LED Luminaires for mounting at 40 feet for traffic signal systems. FF Luminaire Wire Holders Use luminaire wire holders for signal systems listed on the APL,Signals. HH Signal Head and Mounting Hardware HH.1 Angle and Straight Mount Caps Provide angle and straight mount caps listed on the APL,Signals HH.2 Clamp on Adapters Provide clamp on adapters listed on the APL, Signals HH.3 Cluster Head Adapters Provide cluster head adapters listed on the APL,Signals

HH.4 Mast Arm Extensions Provide mast arm extensions listed on the APL, Signals HH.5 Plumbizers Provide plumbizers listed on the APL HH.6 Signal Head Mounting Spacers Provide signal head mounting spacers listed on the APL, Signals HH.7 Strap on, Bolt on, Threaded Hubs and Flanges Provide strap-on hubs and flanges, bolt-on hubs and flanges, and threaded hub and flange pole adapters listed on the APL, Signals Apply brush-on anti-seize and lubricating compound to threaded portions anchor rods ; bolts; screws; nuts; and the bearing surfaces of nuts, washers, and bolt heads before assembly. Apply brush-on anti-oxidant joint compound to electrical conductors before assembly. Apply brush-on ferrous metal electrically-conductive corrosion resistant compound to threaded portions of metallic conduit before assembly. QQ Pedestal Steel Screw-in Foundation and Fasteners Provide steel screw foundations with manufacturer supplied bolts, nuts, and washers listed on the APL, Signals for pedestal pole installation on steel screw-in foundations.

2565.3CONSTRUCTION REQUIREMENTS

A General Traffic signal structural supports with X and Y coordinates shown on the Plans are the exact locations. Obtain the Engineer’s approval before making modifications to these locations. Locations not assigned X and Y coordinates on the Plan are approximate only. The Engineer will establish those locations on the Project. Keep Roads open to traffic during construction in accordance with 1404, “Maintenance of Traffic.” Protect openings or uncompleted Work that may cause a hazard to vehicle or pedestrian traffic in accordance with 1707, “Public Convenience and Safety.” A.1 Compliance with Electrical Codes and Standards Perform Work meeting the requirements of the NEC, NESC, Minnesota Department of Labor and Industry, Board of Electricity, and State laws and local ordinances governing electrical Work.

Provide Equipment meeting relevant standards and requirements from the following references: NEMA, Underwriters’ Laboratories, Inc. (UL), and The Electronic Components Industry Association (ECIA). Unless otherwise detailed in Contract documents, provide Materials, Equipment, and workmanship meeting the standards in the current editions of the following references : AASHTO, ANSI, ASTM, FHWA, ICEA, IES, ITE, MnMUTCD, NEC, NESC, relevant local laws and ordinances. Use a National Recognized Testing Laboratory (NRTL) as defined by the U.S. Department of Labor. Ensure the testing laboratory is listed by OSHA in its scope of recognition for the tests conducted as required by this section. A.2 Permits and Inspections Obtain the necessary permits and inspections at no additional cost to the Department. Perform Work in conjunction with construction of electrical systems and conduit raceways for conveying cables and conductors as specified in the Contract and in accordance with 1702, “Permits, Licenses, and Taxes.” Obtain a permit for the performance of this Work, including the installation of conduits, in accordance with the Minnesota Electrical Act. Meet the minimum clearance requirements determined by the electrical utility company, for overhead electrical lines to other overhead Structures and Equipment operations. A.4 Materials and Electrical Equipment List Within 15 Calendar Days following the Award of Contract date, submit a list of Contractor-provided Materials and Equipment to the Engineer. Include in the list, the name of the manufacturer, size, and the location where the item is obtained. Within 15 Calendar Days following the Contract approval-notice mailing date, provide evidence in writing to the Engineer, that orders are placed for components required on the Project. A.5 Material Samples for Testing Provide samples of Materials for testing and inspection. The Engineer may accept Materials on the basis of the manufacturer’s certification that Material was sampled, tested, and inspected for compliance with the Contract. The Department reserves the right to accept or reject Material on the basis of its own tests and inspections. A.6 Tests Perform the tests necessary to demonstrate that the Materials and the installation are in accordance with the Contract, at no additional cost to the Department. Provide instruments, Equipment, tools, Materials, and labor necessary to perform the required tests, at no additional cost to the Department. Instruments, E quipment, tools, and Materials for performing tests will remain the property of the Contractor after completion of the tests. A.7 Warranties and Instruction Sheets Provide new Materials with manufacturers’ warranties. Submit manufacturers’ warranties, instruction sheets, and parts lists, to the Engineer before 1516.3, “Completion of the Work,” or if requested by the Engineer.

Warrant that Materials provided to the Project are free of defects in Materials and workmanship in accordance with the following:

practice, to the Department. Name the Department as the obligee on manufacturers' warranties.

warranty period begins on the Turn-On date except the one-year period for Materials placed into operation after the Turn-On of the system begins on the date the Materials are initially, individually placed in service. A.8 Submittals Prepare documents and submit to the Engineer for review in accordance with 2545.3B ”Lighting Systems, Submittals.” A.9 Installation Requirements Install Materials and devices in accordance with the Contract and the manufacturer’s installation requirements. A.11 Calibration Requirements for Measurement Tools and Test Equipment Submit documentation for precision measurement tools and test E quipment calibration and certification to the Engineer before using. Calibrate precision measurement tools and test Equipment annually. B Maintenance and Operation of New and Existing Electrical Systems Maintain, operate, and locate within the Project, new, existing, and temporary Traffic Control Signal Systems and electrical systems as specified in 2565.1 “Traffic Control Systems, Description,” in accordance with 2545.3C “Maintenance and Operations of Electrical Systems” including subsections. C Excavation and Backfill Provide excavation and backfill for the installation of foundations, equipment pads, cable, conduit, handholes, and other structures shown on the Plans and in accordance with 2451, “Structure Excavations and Backfills.” Do not over excavate holes for foundations and handholes wider than necessary. Install foundations, conduit, and handholes as soon as possible following excavation. Place excavation Material in locations that will not cause damage or obstruct vehicle or pedestrian traffic, or interfere with surface drainage. Locate trenching at the distance from the edge of the pavement, back of curbing, or edge of surfaced Shoulders as specified in the Contract or directed by the Engineer. Ensure the trenching operation does not cause damage to the pavement, curbing, or surfacedS houlders. Construct the trench with uniform alignment for accurate referencing of the underground installation. Relocate cable and conduit to be installed as specified in the Contract where sites designated for underground facilities, guardrail, sign posts, and below groundS tructures are planned. Coordinate with the Engineer and obtain the Engineer’s approval of the relocations before installing. If trenching and excavation operations require the removal of concrete pavement or concrete Sidewalk, cut the concrete with a concrete saw to a depth of at least 35 percent of the thickness of the concrete along the removal lines before breaking and removing, or remove the concrete to existing joints.

Restore the following listed to its original condition if damaged due to excavation operations at no additional cost to the Department:

Backfill excavations around the installed cast-in-place foundations, conduit, direct buried lighting cable and handholes. Use backfill Material similar to adjacent soils unless specified elsewhere , and compact backfill Material to the same density. Avoid placing stones immediately adjacent to foundations, conduit, direct buried lighting cable, and handholes during backfill placement. If adjacent soil Materials are unsuitable, remove and replace in accordance with 2451, “Structure Excavations and Backfills.” C.1 Precast Foundations Excavation and Backfill Excavate drilled shafts and backfill around precast foundations for poles as follows:

into the ground 3 inches to 6 inches larger in diameter than the diameter of the foundation

torque, and down thrust to auger a cylindrical drilled shaft to the depth specified in the Contract

while maintaining the required depth of the shaft

foundation in the shaft

minimum to a 6 inch maximum continuous symmetrical annular void between the precast foundation and surrounding soil

ground rod electrode conductor if specified in the Contract

surrounding soil of the shaft with firmly compacted fine filter Aggregate in accordance with 3149.2I.2, “Fine Filter Aggregate” in compacted lifts of 6 inches

Aggregate in compacted 6-inch lifts for the entire depth of the drilled shaft excavation C.2 Equipment Pad Excavation and Subbase Before installing concrete forms for cast-in- place equipment pads or placement of precast equipment pads, excavate and prepare an area that extends at least 6 inches beyond the sides of Cast-in-Place and Precast equipment pad for a granular Material subbase under the pad. Maintain a depth for the excavated area that will accommodate at least a 6 inch thick compacted subbase layer and the required projection of the pad above ground. Ensure the subbase is level. Use an approved Aggregate Material for the subbase in accordance with 2565.3C.3 ”Virgin Granular and Aggregate Material.”

C.3 Virgin Granular and Aggregate Material Provide Virgin Granular and Aggregate Material for subbase and backfill in accordance with 3138.2B “Virgin Materials,” 3149.2A.1 “Virgin Materials” and the following. C.3.a Backfill for Foundations Provide excavation and backfill in accordance with 2565.3C “Excavation and Backfill” and the following. When required in Contract Documents or as directed by the Engineer to use a Granular or Aggregate Material in accordance with 3138 “Aggregate for Surface and Base Courses” or 3149 “Granular Material” to backfill around foundations, provide Virgin Material as specified. Do not use Recycled Material. C.3.b Subbase for Equipment Pads Provide a 6 inch thick compacted subbase layer of Virgin Class 5 Aggregate Material in accordance with 3138 “Aggregate for Surface and Base Courses” for equipment pads. Do not use Recycled Material. C.3.c Conduit Buried in Aggregate Material When required to open trench rigid PVC conduit in an existing aggregate material, provide a trench bedding with a Virgin Aggregate Material bedding in accordance with 3149.2G “Aggregate Bedding.” Do not use Recycled Material. Install the conduit in the open trench with the Virgin Aggregate Material bedding in accordance with Conduit Buried in Aggregate Material and Concrete Encased Conduit in the Construction Requirement section of these Special Provisions. C.4 Surplus Material Remove and dispose of surplus Material from excavation and backfill outside the Right- of-way in accordance with 2104.3D.3, “Disposal Outside Right-of-way.” D Conduits, Fittings, and Junction Box Installation D.1 General Provide conduit and fittings of the type and size as specified in the Contract. The Contractor may install conduit and fittings of a larger size than specified. If the Contract does not specify the size of conduit, provide conduit sized in accordance with the NEC so the cross sectional area occupied by the cables and conductors does not exceed 40 percent of the internal cross-sectional area of the conduit for rigid steel conduit or 35 percent for non-metallic conduit. Install conduit in accordance with the NEC. In a single conduit run, provide conduit of the same size and type, continuous from outlet to outlet. The Contractor may incorporate special conduit fittings for pulling cables and conductors or making short radius bends, as necessary, in the run. Prevent conduit from being damaged. Rigidly support conduit that will be encased in concrete or masonry in position during casting. Install non-metallic conduit End Bells on HDPE or Rigid PVC conduit before installing cables and conductors to prevent damage. Install threaded insulated grounding bushings with lay in ground lugs on RMC conduit before installing cables and conductors to prevent damage. Use lay in ground lugs constructed of stainless steel, copper, tin plated copper, brass, or bronze.

Install expansion and deflection/expansion devices at each Structure expansion joint as specified in the Contract or directed by the Engineer. Install cables and conductors in conduit, unless otherwise specified in the Contract. If installing conduit for future use, do not install the Equipment grounding conductor. D.2 Conduit Placement Install conduit in a straight run entering into handholes and foundations. Ensure handholes and foundations are in line with the general direction of the conduit run. D.2.a Above Ground Secure conduit attached above ground to wood poles with U-shaped 2-hole pipe straps meeting the requirements of the current edition of the NEC and spaced no more than 4 feet apart. Secure conduit attached above ground to metal poles with at least 3/4 inches wide stainless steel banding, spaced no more than 5 feet apart. Support conduit within 3 feet of each termination or fitting. Secure conduit attached above ground to cabinets, bridges, and other Structures as specified in the Contract and to the Engineer’s satisfaction. D.2.b Underground Place conduit using the trenching method, vibratory plow, or by directional boring. Only place conduit under existing pavement or Sidewalk by directional boring. If a distortion greater than 1/4 inch is created in the existing surface, remove the distortion and restore the Roadway or Sidewalk to the original condition at no additional cost to the Department. Except under existing pavements, when placing high Density polyethylene

installation methods. If plowing HDPE conduit, provide a vibratory plow with a feed blade that is capable of performing the following:

blade chute so that little or no stress is placed on the conduit during installation to avoid damage

Only use RMC or Rigid PVC conduit between foundations and the nearest handhole. HDPE conduit may not be used in foundation or Equipment pad. Do not use the trenching method, vibratory plow, or push conduit with a pneumatic compaction tool to place conduit under existing concrete, bituminous surfaces, and railroads.

Grout the voids that result from Abandoned boring operations through a Roadbed or Sidewalk at no additional cost to the Department and as approved by the Engineer. If placing conduit underground below new or reconstructed Roadway surface areas and Sidewalk which has not been paved, use the trenching method to place the conduit at a uniform depth below the adjacent ground line and backfill and compact before placing new Roadway surfaces or new Sidewalk, as approved by the Engineer. Obtain the Engineer’s approval of the trench before installing the conduit. Place Department furnished ball markers at open ends of conduit under Roadways or slope pavement that do not terminate in handholes, pads, and foundations. Place underground conduit at least 18 inches below the surface of a ground area and at least 24 inches below Roadway surfaces. Place underground conduit under railroad tracks at least 42 inches below the bottom of railroad ties, or as required by the railroad company. If approved by the Engineer, the Contractor may change conduit runs as specified in the Contract to avoid underground obstructions. Provide underground conduit runs with provisions for draining moisture. Slope horizontal conduit runs to drain at a rate of at least 0.25 percent, or 3 inches per 100 foot. To drain the low points, not including the open ends of conduit runs, install a standard tee conduit fitting and nipples, at least 6 inches long. Extend the fitting and nipple into a hole 24 inches by 24 inches deep. Backfill the hole with crushed rock or Department-approved granular Material. Position conduit, terminating in handholes or concrete foundations, so the conduit extends inside the handholes, pole bases, cabinet bases, or S tructure bases by 2 inches to 3 inches. Slope the conduit toward the access opening. Slope the conduit out of the foundation, toward the handhole opening for drainage. Locate conduit couplings at least 6 inches from the Structure surface. Place conduit entering existing concrete foundations by sawing and breaking the concrete or core drilling so conduit enters the Equipment pad or foundation below the adjacent ground surface and projects from 1 inch to 2 inches above the top of the Equipment pad or foundation and inside the pole base or cabinet. Return the foundation to its original condition by patching with concrete as approved by the Engineer. Thread conduit, stubbed out of a concrete foundation for future use if installing RMC. Cap stubbed conduit on the open ends with standard pipe caps or rigid PVC caps, based on the type of conduit. Extend conduit from 18 inches to 24 inches out of the concrete foundation underground in the direction shown on the Plans or as directed by the Engineer. Following installation of cables and conductors, seal the open ends of conduit entering Equipment pads and foundations, using duct seal compound NRTL classified under general use tapes.

D.3 Conduit Bends Provide conduit bends, except factory bends, with a radius of at least six times the Nominal diameter of the conduit. Make conduit bends without damaging the conduit and without reducing the internal diameter of the conduit. For bends in conduit runs, provide the minimum radius necessary, but do not exceed 360 degrees of bend per run between handholes, foundations, or both. D.4 Rigid Metal Conduit D.4.a Joints Thread the ends of the conduit and use a standard threaded conduit coupling to join standard length conduit. If cutting standard length conduit, thread and ream the ends to remove burrs and rough edges. Butt or bring together the full circumference of the conduit ends with a coupling to provide effective electrical continuity for the length of the conduit run. Paint coating on conduit damaged by handling or installing with rust preventative paint as approved by the Engineer. Brush on ferrous metal electrically-conductive corrosion-resistant compound in accordance with 3842, “Electrical Systems Compounds and Lubricants,” to threaded portions of RMC including the fittings. D.4.b Open Ends Cap the open ends of conduit in handholes and conduit extending above concrete foundations with standard conduit caps, or other method approved by the Engineer, until wiring installation. Install a threaded insulated grounding bushing with lay in ground lugs for RMC on the open ends when caps are removed. Provide grounding bushings in accordance with the UL 467 for grounding and bonding Equipment . Provide grounding bushings with lay in ground lugs sized to accommodate a 6 AWG conductor for bonding. Apply anti-oxidant joint compound to the lug and bonding conductor before assembling. Cap the open ends of conduit that terminates on the side of wood poles or other Structures with weatherhead entrance fittings. D.4.c Existing Conduit Clean and blow-out existing underground conduit, incorporated into a new or revised electrical system, with compressed air before placing new cables and conductors. Replace old insulated grounding bushings and bonding jumpers with new insulated grounding bushings with lay in ground lugs sized to accommodate a 6 AWG conductor, and bonding jumpers in existing handholes to maintain a continuously grounded and bonded system. If placing new handholes in existing conduit runs, cut the conduit and extend it into the new handhole as approved by the Engineer. Thread the open ends of conduits, install new insulated grounding bushings with lay in ground lugs sized to accommodate a 6 AWG conductor for bonding, and bond the conduit.

D.5 Rigid PVC Conduit D.5.a Joints Trim the inside and outside of cut ends of rigid PVC conduit to remove rough edges. Use standard sized couplings or rigid PVC conduit with an attached preformed coupling. Clean rigid PVC conduit sections with a joint cleaner and cement joints with a PVC cement. Allow the PVC cement to set for 6 hours before pulling conduit through a directional-bored channel. Butt or bring together the full circumference of the conduit ends with a coupling. Use long-line couplings to join conduit sections if placing rigid P VC conduit under existing Roadway surfaces. D.5.b Open Ends Immediately cap or plug the open ends of rigid PVC conduit to prevent the entrance of moisture until the installation of the cables and conductors. Before installing cables and conductors, provide rigid PVC conduit with standard PVC conduit E nd Bells and End Bells for HDPE, continuous length conduit to prevent damage to the cables and conductors. Cap or plug the open ends of rigid PVC conduit, not containing conductors, using standard sized PVC conduit caps or plugs. D.5.c Conduit Buried in Existing Aggregate Material When required to trench rigid PVC conduit in existing aggregate material, provide and install a trench bedding with a minimum 4 inches thick of granular material in accordance with 3149.2G “Aggregate Bedding.” Once the fine filter aggregate bedding has been installed, place the conduit in the trench on top of the bedding. Place a minimum 4 inches of Aggregate Material in accordance with Virgin Granular and Aggregate Material for Foundations and Equipment Pads in the Materials section of these Special Provisions over the top of the conduit before backfilling and compacting the trench. D.5.d Concrete Encased Conduit in the Ground When ground conditions prevent compliance with the NEC conduit depths, provide a concrete covering or encasement in accordance with NFPA 70 National Electrical Code Handbook, Article 300.5 Use mix No. 3G52 concrete for the covering or encasement. Obtain Engineer’s approval before performing the Work. D.6 Conduit on Bridges (Concrete Encased, Hanging, and Surface Mounted) Provide PVC coated galvanized rigid metal conduit and fittings in accordance with 3801.2C, “PVC Coated Galvanized Rigid Metal Conduit (PVC Coated Galvanized RMC),” and install as shown on the Plans, as approved by the Engineer, and as follows:

representative every two years Before installation submit an unexpired manufacturer certified installer card for each Contractor employee directly performing the installation.

Provide conduit hangers, clamps, straps, U-bolts, strut, and bar supports, threaded rod, inserts, and miscellaneous hardware in accordance with the NEC and 3801 “Rigid Metal Conduit” for hanging and surface mounted conduit. Install the conduit hangers, clamps, straps, U-bolts, strut and bar supports, threaded rod, inserts, and miscellaneous hardware as shown on the Plans and as approved by the Engineer. Ensure the installation allows for conduit expansion, contraction, and deflection. D.7 Expansion and Deflection/Expansion Coupling Fittings for Conduit on Bridges Provide expansion and deflection/expansion coupling fittings in accordance with 3801.2D, “Conduit Expansion and Deflection/Expansion Coupling Fittings,” for conduit runs encased in concrete, hanging, or surface mounted. Install expansion and deflection/expansion coupling fittings as shown on the Plans or, if not shown, as directed by the Engineer. Set the internal bushing for expansion coupling fittings in conduit runs in accordance with the manufacturer’s installation instructions. If the manufacturer does not provide instructions for setting the internal bushing, then position the internal bushing in the middle of the expansion joint coupling fittings to allow for equal movement in both directions. Wrap the expansion and deflection/expansion coupling fittings encased in concrete with sponge rubber expansion joint in accordance with 3841, “Sponge Rubber Expansion Joint,” and as shown on the Plans or, as directed by the Engineer. Ensure the outer seam of the wrap is on the bottom side of the expansion and deflection /expansion fittings assembly. Secure the wrap in place before concrete pouring operations. Protect the sliding mechanism of expansion coupling fittings from concrete contamination when encasing in concrete. D.8 Junction Boxes Attached to Bridges and Retaining Walls Provide junction boxes in accordance with 3838, “Junction Boxes,” and as shown on the Plans. Install junction boxes as shown on the Plans. If the Plan does not specify, install as directed by the Engineer with anchorages, supports, and hardware to allow removal of the junction box. Install junction boxes surface mounted to concrete with masonry anchorages or powder activated studs with the hardware necessary to allow removal of the junction box. Provide the manufacturer supplied drain fitting and install as close to the bottom of the enclosure as possible. D.9 Rigid PVC Conduit Attached to Wood Poles Securely fasten Rigid PVC conduit to wood poles by appropriate type conduit straps that meet the current edition of the NEC. Space the conduit straps 3 feet to 4 feet apart. D.10 Liquid Tight Flexible Non-Metallic Conduit (LFNC-B) Securely fasten liquid tight flexible Non-Metallic conduit with appropriate type conduit straps as specified in the Contract and in accordance with the current edition of the NEC . E Handholes Install handholes as specified in the Contract and as approved by the Engineer. The Contractor may install additional handholes at no additional cost to the Department. Set the tops of handholes so the cover is 1 inch below grade, except in Sidewalk.

Set the cover flush with the Sidewalk in accordance with ADA requirements. To facilitate drainage, set handholes on a compacted Aggregate drain bed, 2 feet larger in diameter or square of the handhole enclosure, and 12 inches deep, using coarse filter Aggregate in accordance with 3149.2H, “Coarse Filter Aggregate.” Backfill handholes after installing the cover. Install conduits entering handholes through the side wall of the handhole. Drill conduit holes into the side walls of handholes no more than 1 inch larger than the size of conduit being installed. Remove excess Material inside of existing handholes that are to be used in the new system. Use a caulking compound or other type of sealant compatible with the handhole Material to the Engineer’s satisfaction. After the cables and conductors have been installed in the handhole place a Department provided ball marker as follows:

6 inches from the top of the handhole when the conduit is stood vertically against the side of the handhole

the conduit

vertical position Use red ball markers for handholes containing conductors with an operating voltage of ˃ 50 volts. Use orange ball markers for handholes containing conductors with an operating voltage of ≤ 50 volts and communications circuits. For placing pre-cast concrete handholes in accordance with Standard Plate 8117 with metal frame and cover, in areas not surfaced with concrete, support handholes with concrete to the Engineer’s satisfaction. Bond and ground the metal ring and cover in accordance with the NEC Article 314.30. F Foundations and Equipment Pads Except for portions of concrete foundations that extend into solid rock, use forming tubes or wood forms with the following characteristics to construct concrete foundations in accordance with 2411, “Minor Concrete Structures.” Install foundations for breakaway poles in accordance with AASHTO LRFD Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals. Provide precast concrete foundations and equipment pads from manufacturers listed on the APL, Precast concrete. Install foundations plumb and ensure the tops of the foundations are level. Install equipment pads level. If foundations are not plumb then re-install. If equipment pads are not level then re-install.

Excavate and backfill foundations and equipment pads in accordance with 2565.3C “Excavation and Backfill.” Backfill and compact conduit and cable trenches and around the foundation. Before concrete pouring operations, brace conduits in cast-in-place concrete pole foundations with a rigid metal template, even when the anchor rod assembly’s upper anchor rod template will be cast flush with the top of the concrete foundation, to ensure proper location to fit inside the pole . Remove the template after 24 hours of placing the concrete. Use a rigid metal template to brace conduits, anchor rods, ground rod electrodes, and other Equipment in position for cast-in-place concrete equipment pads before concrete pouring operations. Use portable vibrators and hand spading to consolidate the concrete to form a smooth, dense surface free of air or water blisters. Install preformed joint filler in accordance with 3702, “Preformed Joint Fillers,” between the Sidewalk or concrete area and foundations and equipment pads. Cover the Structure with white polyethylene sheeting in accordance with 3756, “Plastic Curing Blankets.” Replace foundations and Equipment pads at no additional cost to the Department if anchor rods, conduits, and ground rod electrodes are missing, improperly located, or projection heights do not meet the requirements in the Contract. Do not alter the transformer base plate openings and anchor rod holes to accommodate misaligned anchor rods, conduits, and ground rod electrodes. Do not alter foundations, conduits, anchorages, or ground rod electrodes if misfits between the assembly of the pole and foundation occur. If unstable foundation conditions are encountered, refer to the spreadfooting foundations Standard Plans sheets for that foundation type required to be installed. Obtain the Engineer’s approval before concrete foundation construction. If obstructions such as solid rock are encountered that prevent concrete foundation construction as planned, refer to the rock foundations Standard Plans sheets for that foundation type required to be installed. Obtain the Engineer’s approval before concrete foundation construction. Use erosion prevention products to reinforce vegetation around the foundations and E quipment pads in accordance with 3885, “Rolled Erosion Prevention Products.” G Loop Detectors Provide preformed rigid PVC or saw-cut inductive loop detectors. Install complete loop detectors with the following:

specified in the Contract

G.1 Installation Splice the loop detector Roadway conductor to the loop detector lead-in cable in accordance with the Contract and as follows:

the cable jacket at the end of the cable assembly that will be installed in the loop detector splice kit

splice encapsulation Material forming a water tight seal

control signal cabinet in the appropriate terminals as shown on the cabinet print G.1.a Preformed Rigid PVC Loop Detector Provide loop detectors encased in rigid PVC conduit in accordance with the Contract. G.1.b Saw-Cut Loop Detectors Provide saw-cut loop detectors in accordance with the Contract. The Engineer may make minor adjustments to the size or shape of the loop detector in the field at no additional cost to the Department. Make an individual saw cut from each loop detector to the conduit leading to the handhole. G.2 Loop Detector Test Report Submit three copies of a signed and dated loop detector test report to the Engineer. Include the following information in the report for each loop detector and lead-in cable system provided and installed as specified in the Contract:

2 locations:

at the handhole or junction box before splicing the loop detector lead- in cable

Intersection traffic control signal cabinet after splicing the handhole or junction box

greater than the ohm reading measured at the loop detector adjacent handhole or junction box

detector and lead-in cable system

VDC between one loop detector lead-in cable conductor and the “Equipment Ground Bus” in the cabinet Perform the continuity test, inductance test, and insulation resistance test at the Intersection traffic control signal cabinet before terminating the loop detector lead-in cable conductors on the terminal facilities. Perform loop detector tests in the Engineer’s presence at no additional cost to the Department.

The Engineer will distribute the 3 final loop detector test reports for the intersection as follows:

If a loop detector or lead-in cable system fails any of the loop detector tests, replace parts or the entire loop detector and lead-in cable system at no additional cost to the Department as directed by the Engineer. Repeat and record the loop detector tests for the “revised” loop detector and lead-in cable system. Each loop detector and lead-in cable system must pass the loop detector tests and must be operational as approved by the Engineer. Regardless of the test results, the Department may test each loop detector and lead-in cable system with Department owned test Equipment. H Bonding and Grounding Provide bonding, grounding, grounding electrodes, grounding electrode conductors, E quipment grounding conductors, bonding jumpers, and grounding connections in accordance with NEC. Provide grounding of the system and neutral at the service cabinet. Provide conductors for Equipment grounding, grounding electrodes, and bonding jumpers in accordance with 3815.2B.4, “Grounding Conductors.” Use NRTL- listed stainless steel, copper, tin plated copper, brass, or bronze connectors for bonding and grounding unless otherwise specified in the Contract. H.1 Grounding Electrodes Provide grounding electrodes in accordance with 3818, “Grounding Electrodes.” H.2 Bonding and Grounding Form a continuous bonded and grounded system using the following:

H.3 Pole Base Bonding and Grounding Use a brass, bronze, or stainless steel bolt a minimum of 3/16 inch in diameter installed in the lower part of the shaft or base to attach the grounding and bonding jumper to Light Poles . Do not use a solder or sheet metal strap connection. For Signal Pedestal bases, mount one NRTL listed ground wire connector with a single bolt on each adjacent sidewall to the access door, 3 inches in from the door and 8 inches above the base bottom of each sidewall. Use a cross slot head screw to secure the ground wire to the

connector. Ensure the connector accommodates a 6 AWG stranded copper wire. Install the connectors with the connector down. Ensure every device in the pedestal base is constructed from compatible Materials.Terminate the 6 AWG stranded, insulated green conductor on the “Equipment Ground Bus.” Ground the “Equipment Ground Bus” to the signal service ground rod electrode with at least 6 AWG stranded, insulated green grounding electrode conductor. Provide and connect a 6 AWG stranded, insulated green Equipment grounding conductor from the “Equipment Ground Bus” in the traffic control signal cabinet or other type cabinet to the ground bus of the service cabinet and to each incoming conduit insulated grounding bushing lug or each incoming 6 AWG stranded, insulated green conductor. H.4 Ground Rod Electrode Installation Drive ground rod electrodes at service points and locations specified in the Contract. Install ground rod electrodes and grounding connections in accordance with the NEC . Provide a ground rod electrode placed inside the pedestal foundation slightly off center before concrete pouring operations. When ground rod electrodes are required to be installed outside of the foundation and rock is encountered preventing the ground rods from being installed vertically, follow the installation requirements for rod electrodes in accordance with the NEC . If it is not possible to install ground rods according to the installation requirements of the NEC , install plate electrodes in accordance with 3818, “Grounding Electrodes,” as directed by the Engineer. If installing the ground rod electrode in concrete foundations, install the top of the ground rod electrode from 2 inches to 3 inches above the foundation. Bond the service Equipment to the ground rod electrode. H.5 Replacement RMC Threaded Insulated Grounding Bushings In addition to the required bonding and grounding jumper and required threaded insulated grounding bushings with lay in ground lugs on open ends of new RMC , provide and install new bonding and grounding jumpers and new threaded grounding conduit bushings on open ends of in-place RMC at the in-place locations as directed by the Engineer. H.6 Anti-Oxidant Joint Compound Apply anti-oxidant joint compound in accordance with 3842, “Electrical Systems Compounds and Lubricants,” to bonding and grounding connections before assembly and after final connection. I Wiring Install cables, conductors, and wiring in accordance with the NEC . Tape the ends of un-terminated spare conductors with vinyl electrical tape to prevent exposure to moisture. Leave 3 feet of slack cable in each handhole through which a run of cable passes. Leave 24 inches of slack cable or conductors in each Light Pole base, and traffic control signal pedestal base. Install unmetered service conductors in a separate conduit system. Run conductors of a branch circuit in a single conduit. Continuously run cables and conductors without splices from the terminal appliances in the traffic control signal cabinet to the device.

Continuously install loop detector lead-in cable without splices or terminals from the loop detector conductor and lead-in cable splice to the traffic control signal cabinet or other type cabinet. Continuously install interconnect cable between cabinets without splices. Run the cable in straight lines with a minimum number of bends in the cable run. Provide the size and quantity of conductors in each cable and the number of cables in a given conduit run as shown on the Plans. Wire the electrical system in accordance with the field wiring diagram as shown on the Plans. Identify cables as shown on the field wiring diagram in handholes, junction boxes, traffic control signal pedestal bases, mast arm pole bases, Light Pole bases, and cabinets. Except for the individual conductors terminated at the cabinet fuse panels, wrap white vinyl adhesive tape around the cable to identify cables and conductors. Handwrite labels with a black permanent marker as approved by the Engineer or use a label maker with labels suitable for use in wet locations. Wrap the labels from a label maker around the cable in 1 complete revolution with minimum 1/10 inch overlap. Place machine printed labels, embossed plastic labels, vinyl adhesive pre -printed labels, or sleeve type labels around each conductor to identify the individual conductors terminated at the cabinet fuse panels. Place labels on each cable terminated at the terminal appliances located inside the traffic control signal cabinet (i.e. RED 2-1, YEL 2-1, GRN 2-1, RLTA 5-1, YLTA 5-1, GLTA 5-1, RRTA 4-1, YRTA 4-1, GRTA 4-1, DWK P6-1, WLK P6-1, etc., or the like, indicating the Signal Indication and the Signal Head number). Apply the label within 3 inches of the terminal point. I.1 Underground Wiring To avoid damaging the cable and conductor insulation, hand pull cables and conductors through conduit raceways. Clean the conduit at the time of installation. Tape the ends of cables and conductors to exclude moisture until spliced or terminated. Hand pull cables and conductors through rigid PVC conduit without splitting or damaging the rigid PVC conduit due to “pull rope abrasion.” Replace the damaged portion of the rigid PVC conduit as approved by the Engineer. Use the trenching method or a vibratory plow to direct bury interconnect cable not placed in conduit to a depth of at least 36 inches, except where required to enter a handhole. If the Contract specifies the interconnect cable to enter a handhole, install the cable in the side of the handhole from 6 inches to 8 inches above the bottom of the handhole. Maintain a depth of at least 36 inches within 2 feet to 3 feet of the handhole. If plowing direct buried interconnect cable, provide a vibratory plow with a feed blade that is capable of performing the following:

that little or no stress is placed on the cable during installation to avoid damage

conduit

Submit the plowing method to the Engineer for approval before installing the cable. Install underground non-detectable marking tape 12 inches to 18 inches above the interconnect cable or conduit.

Place any direct buried cable that enters or exits handholes in a conduit sleeve at least 3 feet long. I.2 Cabinet Field Lead Wiring Do not cut a field lead entering a cabinet shorter than the farthest terminal in the cabinet. After completing field connections to the cabinet terminal, dress and band together the field leads to provide an orderly arrangement within the cabinet. I.3 Traffic Signal Systems Cables and Conductors Splicing of traffic signal control cables and other cables used in the traffic control signal system are not allowed unless specified elsewhere in the Contract. Install signal cables from the termination points in the traffic control signal cabinet to the field devices without splices in the cables. I.3.a Loop Detector Wires Splice loop detector wires in accordance with 2565.3G “Loop Detectors.” I.3.b Underground Cables Do not splice underground cables unless specified in the Contract . I.4 Aboveground Wiring For cables and conductors installed above ground, except where run on overhead span wire, use one of the following methods:

Provide slack of 5 percent of the span length when installing overhead span wire. When installing cables and conductors on span wire, using straps with spacing less than 18 inch for lacing. Provide weather-resistant, black nylon, non-metallic straps with a loop tensile strength of at least 250 pounds. Submit the non-metallic straps to the Engineer for approval before installation. I.5 Signal and Pedestrian Head Terminal Block Wiring For horizontally mounted terminal blocks in the Signal Head, terminate the forks of the spade lugs facing down on the terminal block for the signal control cable running from the pole base into Signal Head. Form a loop with the conductors at least 3 inches above the terminal block and then loop the conductors back down to exit the head. For vertically mounted terminal blocks, terminate the spade lugs for the signal control cable running from the pole base into Signal Head and loop the conductors to extend up from the terminal block at least 3 inches above the terminal block and then loop the conductors back down to exit the head. After the conductors have been properly terminated, spray the spade lugs and the entire terminal block with an approved terminal block coating. The coating of the terminal block includes spraying the terminal connections and the exposed wire ends where cri mped to the spade connector. Use Department-approved terminal block coatings listed on APL, Signals.

J Service Equipment Installation Install service Equipment in accordance with 2545.3K “Service Equipment Installation.” Coordinate with the electric utility company for the service connection in accordance with the Project’s Signal Special Provisions “Service Connection” section. Perform a visual inspection with the electric utility company before making the service connection. K Vehicle and Pedestrian Signal Head Installation K.1 Pedestal Mounted (With Signal Bracketing) Mount vehicle and pedestrian Signal Heads on top of traffic control signal pedestals. Install symmetrically arranged and securely assembled pedestal mounted assemblies plumb and level. Provide for internal wiring within the pedestal shaft signal brackets and pipe fittings. Attach with a bracket to the top of the vehicle Signal Head and to the pedestal shaft. K.2 Vertical Pole Shaft Mounted (With Signal Bracketing) Mount vehicle and pedestrian Signal Heads as shown on the Plans. Provide plumb, securely assembled pole mounted assemblies that allow for internal wiring within the vertical pole shaft, signal brackets, and pipe fittings. K.3 Vertical Pole Mounted (With Angle Mount Plumbizer) Use angle mount plumbizers to plumb the vehicle and pedestrianS ignal Heads mounted on vertical pole shafts. Assemble the signal and pedestrian heads and angle mount plumbizers in accordance with manufacturer installation instructions. Attach two vehicle Signal Sections below the mount. Attach the remaining vehicle Signal Sections above the mount. Attach the Signal Head and the angle mount plumbizer assembly to the pole. Mount the pedestrian head below the Signal Head mount. Install an angle and straight mount cap on the unused upper side of the angle mount when installing Pedestrian Signal Indications. Use extended threaded pole adapters if attaching a cluster head (dog house) style Signal Head assembly at the mount. Use Signal Head mounting spacers if attaching four sections or five sections at the mount. K.4 Pedestal Mounted (With Two Vehicle Straight Mount Plumbizers) Use a straight mount plumbizer to mount vehicle and pedestrian Signal Heads plumb on pedestal shafts. Attach two separate Signal Sections below the mount attach the remaining vehicle Signal Sections above the mount. Attach the Signal Head and the straight mount plumbizer assembly to the pole as specified in the Contract. Use bolt-on hub and flange through bolt adapters to attach straight mount plumbizers to the pedestal shafts. Install a PVC wireway between the through bolt adapter hub and the entrance of the straight mount plumbizer.

Mount the pedestrian head on the bottom of the straight mount plumbizer . Mount the pedestrian head below the Signal Head mount. Install an angle and straight mount cap on the unused upper side of the angle mount when installing Pedestrian Signal Indications. Use Signal Head mounting spacers if attaching four Signal Sections or five Signal Sections at the mount. K.5 Mast Arm Mounted (With Straight and Angle Mount Plumbizer) Use angle mount plumbizers to mount vehicle Signal Heads on traffic control signal mast arms at the extended end of the mast arm. Use straight mount plumbizers to mount vehicle Signal Heads at the mid arm position of the mast arm. Mount two Signal Sections below the mount and the remaining Signal Sections above the mount. Mount two Signal Sections below the mount and the remaining vehicle Signal Sections above the mount. Attach the Signal Head and the straight mount or angle mount plumbizer assembly to the pole. Use Signal Head mounting spacers if attaching four Signal Sections or five Signal Sections at the mount. K.6 Signal and Pedestrian Indication Labeling Label the Indications with the installation date as follows: Place a date of installation on the back of the Indication. Provide labels for the date of installation on the back of the Indication meeting the following requirements:

K.7 Covering Signal Heads “Bagging” Use a method and Material approved by the Engineer to cover vehicle and pedestrian Signal Heads after installation until traffic control signal activation to indicate that the traffic control signal is not in operation. Maintain coverings as approved by the Engineer. K.8 Anti-Seize and Lubricating Compound Brush anti-seize and lubricating compound in accordance 3842, “Electrical Systems Compounds and Lubricants,” onto the threaded portions of signal bracketing, pipe fittings, mounting hardware, angle and straight mount plumbizer threaded nipples, and any threaded metallic fittings before installation. K.9 Signal and Pedestrian Indication Documentation For each signal and pedestrian Indication, submit to the Engineer, 4 copies of manufacturer’s warranty information showing the required 5 year warranty period (from date of installation), product invoice, and documentation showing name of manufacturer, model number, and serial number.

L LED Luminaire Installation Provide LED luminaires as shown on the Plan. Wire luminaires continuously, without splices, from the Source of Power to the luminaire. Provide a Department-approved wire holder that supports the luminaire cable/conductors within the end of the pole tenon near the connection point of the luminaire slip fitter. Label each luminaire in accordance with 2545.3M.2.c, “Labeling Luminaires” If a photocontrol unit is required orient the unit to face north. After the luminaire shaft extension (davit pole) has been installed on the signal mast arm pole:

luminaire internal leveling bubble

provided by the manufacturer M Wood Pole Installation Place wood poles in the ground to a depth equal to 20 percent of the pole length. Excavate 8 inches larger than the diameter of the base of the pole and keep free from loose Material . Hoist the pole into place without damage. Plumb and rake as directed by the Engineer. Provide backfill utilizing selected Material as specified in 2451, “Structure Excavations and Backfills.” Compact each Lift in accordance with 2451, “Structure Excavations and Backfills.” Place the wood pole so that a void area does not display between the wood pole and backfill at the ground plane when placed under load. N Installation of Traffic Signal Structures Provide and install traffic signal structures as specified in the Contract and including anchor rod tightening for single nut connections in accordance with 2545.3H “Pole Installation.” MnDOT traffic signal structures includes the approved traffic signal pedestal poles and bases, and APS Push Button Stations. Traffic Signal Structure bases require single-nut anchor rod connections that are set directly on the foundations without leveling nuts. One hex nut for each anchor rod is used to fasten the base to the foundation anchor rods. Use washers in the connections in accordance with the manufacturer’s installation instructions and Contract Documents. Install bases and tighten anchor rods in accordance with 2545.3H.1.a “Single Nut Anchor Rod Connections,” and the required total torque values specified by the base manufacturer. Divide the required total torque value into three passes of 20 percent, 60 percent, and 100 percent. If the base manufacturer does not specify a required total torque value, then use the torque values as shown in Table 2565.3N-1.

Table 2565.3N-1 Required Torque Values (Ft-Lbs) For Single Nut Connection Traffic Signal Structures Base Type Pass One 20 Percent Pass Two 60 Percent Pass Three 100 Percent Re-Tighten 100 Percent APS Push Button Station Base 12 36 60 60 Pedestal Pole and Pedestal Base with 3/4” Diameter Anchor Rods 18 54 90 90 Pedestal Pole and Pedestal/T- Base with 1” Diameter Anchor Rods 30 90 150 150

Fill gaps that exceed 1/8 inch between the foundation and the pole base with 100 percent clear silicone sealant. Do not completely seal around the perimeter between the foundation and the pole base. N.1 Traffic Signal Pedestal Pole Install pedestal base or T-Base and Pole on foundations specified in the Contract. Orient the base so the access door is 180 degrees from the Roadway centerline. N.2 APS Push Button Station Install APS push button stations as shown on the Standard Plans. Install adhesive anchoring systems as specified in the adhesive manufacturer’s installation instructions. Install a continuous 6 AWG green insulated grounding conductor from the pedestrian pedestal base grounding lug to the nearest handhole. Exothermic weld 6 AWG green insulated grounding conductor to the ground rod installed in the handhole. O Traffic Signal Mast Arm Pole Installation Install mast arm poles in accordance with 2545.3H “Pole Installation” and as specified in the Contract. Hoist mast arm poles without mast arms attached into position. Install mast arms, brackets, and other attachments to the vertical pole shaft without damage. Bolt the mast arms to the vertical pole shafts using silicone filled direct tension indicator washers as specified elsewhere in the Contract. Ensure a moisture-free seal between access openings and covers use a clear, 100 percent silicone sealant to seal the access opening covers on the mast arm pole. Repair and restore damaged areas to original condition as specified in the Contract or as approved by the Engineer.

Repair damage to galvanized finish in accordance with ASTM A780 Annex A2, Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings. Only use zinc-rich paints found on the APL, Signals. Install the required rodent intrusion barrier in the base of the pole. P Pedestrian Pushbuttons and Mounting Hardware P.1 APS Pole Mounting Adapters Install APS pole mounting adapters to traffic signal mast arm poles when required as shown on the Plans. P.2 APS Pushbutton Mounting Spacers Install APS pushbutton mounting spacers to traffic signal structures when required as shown on the Plans. Installation of the APS Pushbutton will require 2 or 3 of the mounting spacers depending on the APS pushbutton manufacturer used. When 3 spacers are required 1 will be used as a wire way for the low voltage communications cable. Where the APS communications cable enters the aluminum pedestrian shaft a nonconductive sleeve is required to prevent abrasion to the cable assembly. P.3 APS Push Button Units Install accessible pedestrian push button units on traffic signal structures and mast arm poles at the locations as shown on the Plans. Each push button unit contains three custom components:

Ensure the button is placed at the correct location. Mount the button facing the pedestrian landing and parallel to the crossing. Apply an approved electrical insulating coating listed on the APL, Signals to the APS wire termination blocks, after wire installation. Apply a bead of 100 percent clear silicone sealant around the top of the push button station housing where the push button comes in contact with the pole shaft.

Q Crosswalk Pavement Markings Provide and install preformed thermoplastic in accordance with 2582, “Pavement Markings.” R Sign Installation R.1 Sign Post Mounted Install in accordance with 2564 “Traffic Signs and Devices.”

R.2 Sign Panel Warning Stickers Install Department furnished warning stickers on new sign panels in accordance with 2564.3, “Traffic Signs and Devices, Construction Requirements.” S Traffic Control Signal Cabinet Installation Securely mount cabinets on Equipment pads to the concrete as approved by the Engineer. Install the one-piece rubber gasket provided with the cabinet, between the bottom flange of the riser adapter and the Equipment pad. Do not cut or alter the gasket. T Fiber Optic Cable Installation Install fiber optic cable in accordance with 2550.3A, “Cable Installation.” U Emergency Vehicle Preemption (EVP) Installation Install EVP detectors and EVP confirmatory indicator light atop traffic control signal mast arms and, if specified in the Contract, atop traffic control signal pedestal shafts in accordance with the following:

with manufacturer's instructions

arm or traffic control signal pedestal shaft to the satisfaction of the Engineer

signal bracketing framework, and use a reducer conduit fitting to attach the detector and indicator light assembly to the traffic control signal mast arm

paint the detector and confirmatory indicator light assembly

integrity of the assembly

light combination

control signal cabinet

association

operational when the signal system is initially turned on

a minimum distance of 1800 feet U.1 EVP Confirmation Lamp Holder Modification Disassemble the rubber washer and stainless steel holding clip on the lamp side of the Department-approved lamp holder. Remove the fiber washer from behind the rubber washer. Reinstall the rubber washer and stainless steel holding clip. Install LED EVP confirmation indications in each confirmation lamp holder. Apply manufacturer-supplied dielectric grease to the indication base threads and pin at the time of installation.

V Painting If specified in the Contract provide mast arm poles, traffic control signal mast arms, luminaire vertical pole shaft extensions, and luminaire mast arms, painted at the manufacturer. Paint metal Structures and metal components of traffic control signal systems with finish coat paint if specified in the Contract and in accordance with 2478, “Organic Zinc-Rich Paint System,” and the following:

arm pole vertical shafts, traffic control signal pedestal shafts, pedestal slipfitter collars, pedestal reinforcing collars (wind collars), signal brackets and pipe fittings, and pedestrian push button stations.

“Aluminum Polyurethane Paint,” to traffic control signal mast arms, luminaire vertical pole shaft extensions, and luminaire mast arms. Remove any protective wrap provided by the manufacturer during shipping immediately after receipt of the shipment on the Project. Protect the factory applied finish when erecting the painted mast arm pole. Provide a collar for handling the pole made of a Material that will protect the painted finish of the pole. Except for touch-up painting, do not field paint the mast arm poles. Use touch up paint provided by the manufacturer to repair and restore nicks, scratches, paint chips, or other damage to the finish as approved by the Engineer. Do not field paint unpainted aluminum components of a traffic control signal system. If a manufacturer's shop coat paint is accepted or specified in the Contract, make every effort during installation to protect the factory applied finish. Repair and restore damage to the finish as approved by the Engineer. Use equivalent manufacturer's shop coat paint and field touch-up any damaged finish as approved by the Engineer. W Existing Materials and Electrical Equipment W.1 Removing and Salvaging Remove and salvage electrical systems in accordance with 2104, “Removing Pavement and Miscellaneous Structures,” and as specified in the Contract or as directed by the Engineer. Do not damage the removed and salvaged Materials and electrical Equipment during removal. Take ownership of Materials and electrical Equipment of an existing electrical system required to be removed but not salvaged and dispose of the Materials and Equipment outside the Right-of-way, subject to 2104.3D.3, “Disposal Outside Right-of-way.” W.2 Reinstalling Where installing salvaged Materials and electrical Equipment at new locations provide and install Materials required to complete the new installation. If the Engineer determines that existing Materials and electrical Equipment are unsatisfactory for reuse, replace the unsatisfactory Material with new Materials and electrical Equipment. If the salvaged Material was not damaged by removal the cost of the new Material and Equipment will be paid for as Extra Work in accordance with 1402, “Contract Revisions.”

W.3 Stockpiling The Contractor may stockpile Materials and Equipment of an existing electrical system required to be removed and not reused on the Project until its removal outside the Right-of-way. Stockpile as approved by the Engineer. X Field Testing Before completing the Work, perform a functional test demonstrating to the Engineer that the traffic control signal components are fully functional. Do not activate the traffic control signal until completion of field tests and the Engineer approves the results. Before final acceptance, provide the Engineer manufacturer’s warranties, instructions, and wiring diagrams of the Materials and Equipment provided to the Project. Y Activating Signals Before activating traffic control signal systems, aim vehicle and pedestrianS ignal Heads as directed by the Engineer. Notify the Engineer at least 48 hours before the scheduled traffic control signal activation. Department personnel will activate the traffic control signal system unless otherwise directed by the Engineer. Provide assistance at the time of the Turn-On to ensure the traffic control signal system is operating correctly and safely. Provide parts and labor to correct malfunctioning components of the traffic control signal system. This requirement does not include Department -provided Material and components, except if damaged by the Contractor. Do not activate the signal system before the Engineer approves the operational signal system and its components, including the emergency vehicle preemption and the traffic control interconnection. Do not turn the signal system ON, OFF, or in flashing mode unless approved by and in the presence of the Engineer. Z Restoration and Cleanup Replace or repair Sidewalks, curbs, gutters, pavements, base Materials, sod, or plants damaged or removed during the Contractor’s operations as approved by the Engineer. Maintain reconstruction Work as approved by the Engineer until final acceptance.

2565.4METHOD OF MEASUREMENT

The Emergency vehicle preemption system is measured as an integral unit complete-in-place and operating. The Traffic control interconnect is measured as an integral unit complete-in-place and operating. The APS push button station is comprised of the base, aluminum shaft, aluminum dome cap, mounting of hardware and components, anchor adhesive, wiring, connections, the APS push button, and other miscellaneous items required for a complete installation of the APS push button station with APS push button. The APS push button and sign includes sign with Braille message, mounting, mounting hardware, wiring, connections, mounting of the APS push button, and other miscellaneous items required for a complete installation of the APS push button and sign. The APS cabinet control unit is the complete APS cabinet control unit including interface boards and required wiring harnesses, mounting hardware, wiring, connections, mounting and installation of the APS cabinet control unit and other miscellaneous items required for a complete installation of the APS cabinet control unit.

The APS pole Mounting adapter includes the APS pole mounting adapter, mounting, mounting hardware, wiring, connections, mounting of the APS push button and sign, and other miscellaneous items required for a complete installation of the APS push button and sign mounted on an APS push button mounting spacer. The APS push button mounting spacers includes three APS push button pole mounting spacers, mounting, mounting hardware, wiring, connections, mounting of the APS push button and sign, and other miscellaneous items required for a complete installation of the APS push button and sign mounted on a set of APS push button mounting spacers. The Saw cut loop detectors are measured as an integral unit complete -in-place tested and operating. The complete installation at one Intersection is considered as one unit. Loop Detector Design Sawcut ___feet X ____feet. The Preformed rigid PVC conduit loop detector are measured as an integral unit complete -in- place tested and operating. The complete installation at one Intersection is considered as one unit. Loop Detector Design NMC Preformed ___feet X ____feet. The Traffic control signal system is an integral unit complete-in-place and operating. The complete installation at one Intersection is considered as one unit.

2565.5BASIS OF PAYMENT

The Department will pay for new Traffic control signal systems on the basis of the following schedule: Item No Item Unit

2565.501 Emergency Vehicle Preemption System lump sum

1 Traffic Control Interconnect lump sum

2 APS Push Button Station each

2 APS Push Button & Sign each

2 APS Cabinet Control Unit each

2 APS Pole Mounting Adapter each

2 APS Push Button Mounting Spacers each

2 Loop Detector Design NMC Preformed (_feet X _feet) each

2 Loop Detector Design Sawcut (___ feet X ___feet) each

2565.516 Traffic Control Signal System system