805TRAFFIC SIGNALS

805.01Description

This work shall consist of furnishing miscellaneous materials, not furnished by the Department, and installing traffic signals in accordance with these specifications and in reasonably close conformance with the lines, grades, and locations shown on the plans or as directed.

MATERIALS

805.02Materials

Materials shall be in acco rdance with the following:

Castings for Handhole ................................................. 910.05(b) Coarse Aggregate, Class E or Higher, Size No. 8 ....... 904.03 Loop Detector Sealant ................................................. 906.02(a) Reinforced Concrete Pipe ............................................ 907.02 Reinforci ng Bars .......................................................... 910.01 805.02

Traffic Signal Materials and Equipment...................... 922 20 Treated Lumber ........................................................... 911.02

The proposed work shall be examined in order to determine what materials not furnished by the Department are required to complete the contract. The Department will furnish only the materials specified on the Department Furnished Materials special provision. If materials to be furnished by the Contractor are listed, the list is only a guide for estimating purposes. All additional materials required to complete an operating installation as specified shall be furnished.

Signal handholes shall be Type I or Type II as shown on the plans. 30

Pedestrian push buttons shall be the type designated in the contract documents, APS or Non-APS.

Joint sealant material shall be compatible with the roadway materials. If polyethylene duct loop wire is used, only sealant in accordance with 906.02(a)1 shall be used.

Timber poles to be furnished shall be in accordance with the current ANSI specifications and dimensions. They shall be of the length and class specified, be fully 40 treated in accordance with 922.10(b), and dry. Minimum circumference at the top and at a point 6 ft from the butt shall be in accordance with ANSI specifications.

Steel strain poles greater than 24 ft in length shall be in accordance with 922.10(a).

The battery cabinet and program timing module for solar powered flashing beacons shall be from the QPL of Traffic Signal and ITS Devices.

CONSTRUCTION REQUIREMENTS

805.03General Requirements

The Contractor shall maintain existing traffic signals in operation until the Engineer determines that the progress of the work necessitates their removal. The new installation shall not interfere with the operation of the existing signal. The work shall proceed in such a manner that the signals are not out of service at any two adjacent intersections at any time. When the operation of an existing traffic signal needs to be interrupted before the new signal is placed in operation, the traffic shall be controlled at all times. The work shall be scheduled so that the interruption is limited to a minimum amount of time and at off peak hours. The new span and catenary installation shall not interfere with the operation of the existing traffic signal. Traffic shall be 60 controlled at all times during the changeover when the existing traffic signal is turned off and the new signal is turned on. This changeover shall take place such that the interruption is limited to a minimum amount of time.

805.03

When directed, temporary stop signs shall be erected at the intersection. When no work is in progress, the intersection shall have at least two operating signal faces for each approach. When the new installati ons are completed, all existing signal equipment and materials including timber poles, steel poles, and cast-iron handhole rings and covers which have not been used in the new installation shall be carefully removed. Regardless of the right to materials found on the project, as set out in other 70 sections of these specifications, items designated in the contract documents, and field identified by the Department, as traffic signal equipment to be salvaged by the Department or local unit of government shall be stored at a secure site until such time as it is transported to the designated location, when designated as a pay item, or salvaged by the Department or local unit of government. The Contractor shall verify that the field identification placed by the Department has not been removed by vandalism or natural causes. If the Contractor has reason to believe that field identifications have been removed, the Department shall be contacted. The Contractor shall be responsible for all damage or loss of this equipment and shall repair or replace the damaged or lost equipment as directed. All signal equipment removed and not 80 designated to be salvaged shall become the property of the Contractor and shall be disposed of in accordance with 202.

All existing painted metallic signal equipment to be reused, such as pedestals, bases, controller cabinets, signal weatherheads, pipe arms, shall be cleaned and painted with two coats of highway yellow enamel in accordance with 909.02(c). Existing metallic signal heads to be reused shall be painted with two coats of black or highway yellow enamel as directed by the Engineer and in accordance with 909.02(c). Aluminum poles and signal support structures shall not be painted.

Existing concrete foundations, which have not been used in the new installation, shall be removed to a minimum of 4 in. below the adjacent grade. The openings shall be filled with concrete and the surface finished and broomed, if they are located in sidewalk areas. Otherwise, they shall be filled with acceptable material conforming with the surrounding area.

Existing signal handholes to be removed, shall be filled after removing rings and covers, with B borrow with a minimum of 4 in. of concrete on top to bring it up to grade in a sidewalk area. Surfaces shall be finished and broomed. Otherwise, they shall be filled with acceptable material conforming with the surrounding area. 100

The signal controller timings will be provided and the Engineer shall be present when the signal intersection is to be placed in operation.

All electrical wiring terminations and splices; controller and cabinet set-up; and testing, review, and turn-on of all operational apparatus at each location shall be done by or in the presence of and under the responsible charge of an employee of the Contractor who holds an IMSA Traffic Signal Construction Technician Level II certification or an IMSA Traffic Signal Fi eld Technician Level II certification. Installation inspections, troubleshooting, maintenance and repair of these systems 110 805.03

shall be accomplished by, or in the presence of and under the responsible charge of, an employee of the Contractor who holds an IMSA Traffic Signal Construction Technician Level II certification. Supervision of non-electrical, traffic signal related construction work and traffic control shall be done by a person holding, at a minimum, an IMSA Work Zone Temporary Traffic Control Technician certification or an equivalent certification approved by the Department.

Before starting work, the Contractor shall provide the names of the Level II Traffic Signal Construction Technicians, the Level II Traffic Signal Field Technicians, and Work Zone Temporary Traffic Control Technicians who have been assigned to 120 perform signal related work, and a photocopy of each such person’s certification card. If the Level II Traffic Signal Construction, or Field Technicians, or Work Zone Temporary Traffic Control Technicians are dismissed from the work, all signal related work requiring such certified personnel on th e project site shall cease until the names and photocopies of certification cards for replacement personnel are provided to the Engineer.

Electrical work shall be executed in accordance with the requirements of the National Board of Fire Underwriters, the St ate Fire Marshal, and the power company which will furnish the electric service. The work shall be in accordance with any local 130 regulations that may apply. The Department will arrange and provide for power service which the power company will bring to the point designated on the plans. Prior to the start of construction, the schedule of activities shall be coordinated with the power company and they shall be contacted again at least 14 days prior to the time the service work is to be completed.

The Department will obtain permits from local officials, companies, or individuals for the use of poles, right-of-way, or other property incidental to the installation of traffic signal. Although entering into the contract implies permission and authority to cut into and push under pavement, sidewalks, and alleys, any damage 140 to underground utilities or inte rruption of such service sh all be the responsibility of the Contractor. The Contractor shall be in accordance with local regulations as well as

107.08. Protective devices shall be in accordance with 107.12 and 801

The location of signal heads, controllers, signal poles, signal cantilever structures, detector housing, disconnect hangers, and other installation items will be shown on the plans. However, a change in the location of an item may be ordered during the progress of the work. The work shall be completed as shown on the plans except for those changes specifically authorized in writing.

Flashing beacons shall flash at a rate for each beacon of 50 to 60 times per minute with the illuminated period from 1/2 to 2/ 3 of the total cycle. Second beacons, if specified, shall flash alternately with the exception of intersection control beacons which shall flash simultaneously.

805.04Pole Installation

Working drawings for strain poles or cantilever structures shall be provided in 805.04

accordance with 105.02. Metal poles shall be erected on concrete foundations and shall be reasonably plumb after installation of signal heads. The handhole side of the pole shall be at right angles to the direction of the signal cantilever arm or span, catenary, 160 and tether. Signal cables shall be brought up inside the poles. Any steel pole, signal cantilever arm, or hardware not galvanized shall be painted with structural steel coating system in accordance with 619.09(a). The surface shall be prepared in accordance with 619.08(a) and 619.08(d). Pain t shall be applied in accordance with 619. All rust, scale, and dirt shall be cl eaned from the metal surface so that paint adheres to the surface.

The construction of concrete foundations shall be in accordance with 805.13. Timber poles shall be set a minimum of 7 ft in the ground and raked 12 in.

805.05Placing Signal Heads

Signal cantilever arm and span mounted signal heads shall have 17.5 ft minimum and 22.5 ft maximum clearance over the road way unless there are visual obstructions which require lowering the signal head. A signal head over the roadway shall not have a clearance of less than 15 ft. Such signal h eads shall be located over the intersection as shown on the plans. Such signal heads shall have a uniform clearance, which will be determined. Signal heads not mounted over a paved roadway, on the top or side of a pole, shall not be less than 10 ft or more than 15 ft above the sidewalk or, if none, above the pavement grade at the center of th e roadway. Signal faces shall be directed to the proper approach lane in each direction. Flasher signal faces that supplement 180 signs shall be mounted with the bottom of the housing at not less than 3 ft or more than 13 ft above the edge of pavement. Flasher signal faces that supplement signs shall be directed towards oncoming traffic. Pedestrian signal faces shall be mounted with

the bottom of the housing at not less than 7 ft or more than 10 ft above the sidewalk.

The pedestrian signal shall be in line with the pedestrian’s vision at the appropriate

crosswalk being used. Pedestrian push-buttons shall be mounted at a height of 3 1/2 to

4 ft above the sidewalk as shown on the plans. A pedestrian actuated signal sign shall

be mounted immediately above the push-button.

Signal heads shall be assembled and wired with one conductor, Type THW,190

stranded wire. Where splices are made, a 2 ft minimum length of cable or wire in

excess of that required for a continuous run shall be provided. Splices shall be twisted

together and soldered or approved type connectors used. Each splice shall be

completely insulated by wrapping with an approved tape and sealed with an approved

electrical coating material. Splices shall be made in such manner that the connections

are moisture proof. The cables coming out of the signal weatherhead shall be looped

to form a drip loop. The drip loop shall be made so that the cables coming out of the

weatherhead loop down below the elevation of the weatherhead to prevent water from

following the cable into the weatherhead. If used, the splice indicated above shall be

located in the top of the coils of cable forming the drip loop.200

Except for signal heads installed on existing traffic signal cantilever structures, all

overhead signal heads shall have backplates, unless otherwise indicated on the plans.

Backplates shall not be cut or altered upon installation.

805.05

914

Signal heads shall not be installed until all other work has been completed. If it

becomes necessary to mount signal heads for more than 2 h before the lights are to be

turned on, the signal heads shall be hooded by placing sacks or similar cover over them

so as to conceal them from traffic. Hooded signal heads are not allowed to be in place

for more than five days. No signal head shall be left over night with the lights out210

unless it is hooded. Signal heads shall be securely mounted. The polycarbonate signal

face shall be used only when securely supported on both ends of the assembly. In a

span cable installation, a tether cable would satisfy this requirement.

When installing push buttons with accessible pedestrian signals, APS, features the

Contractor shall verify that the audible tone is discernible from the mid-point of the

crosswalk.

805.06Grounding

All signal supports, signal controller supports, and entrance switches shall be220

grounded in accordance with the applicable requirements of 807.12.

805.07Wire and Cable Installations

All cable runs attached to utility poles shall have code clearance relative to utility

cables. They shall be no less than 18 ft above the ground level except over railroad

tracks when a minimum of 27 ft clearance shall be maintained. All cable runs shall be

installed in continuous lengths without splices between terminals except when

necessary at handholes, junction boxes, pole signal bases, and pedestal bases. The type

of cable and the number of conductors as well as the gauge shall be as shown on the

plans unless otherwise specified.230

Cable rings shall be used to support the signal cable on the signal span cable. They

shall be spaced 12 in. on center. Cable shall be pulled through the conduit to the

terminal panel in the controller cabinet. Caution shall be used to prevent damage to

the cable when it is being pulled through conduit.

Coded cable conductors shall be used throughout the installation. Cable

conductors shall be tagged at all detector housings, handholes, signal pole bases, and

controller cabinets. At the ends of each cable, the tag shall be placed between 4 and 8

in. from the end of the wire and on the outer jacket. At all other locations, the tag shall240

be placed in the middle of the length of cable stored at the location. The tag shall be

1/2 in. wide, thermal printed black on yellow or black on white, polyester or nylon

tape with permanent adhesive and shall be water, chemical and scratch resistant. The

font shall be arial, size 10px. Tags shall be installed flag style around the cable with

the backs of the tag ends placed together. Tags shall identify the cables by their use.

The following are the uses which shall be indicated by the tags:

805.06

915

Signal cables shall be tagged to identify the direction of travel. Detector lead-in

cables shall be tagged throughout the installation with the corresponding loop tag

information.

The tagging material and fastening will be subject to approval prior to proceeding

with this work. The color coded wires shall be connected properly. The white wire260

shall be the common or ground. Wire used for all identical indications of any

individual phase shall be color coded and, where possible, shall use red wire to connect

red lenses, orange wire to connect yellow lenses, and green wire to connect green

lenses. Signal heads shall be assembled and wired before being installed. The testing

of the loops shall be documented in the Loop Testing Table provided by the State.

805.08Controller Cabinet, Signal Service, and Detector Housing

Installation

Three document packets shall be prepared in accordance with 922.02(b) for each

cabinet. Each packet shall be labeled with the name of the contract number, the270

intersection, the commission number of the signal, and the date of installation. One

paper packet shall be placed in the cabinet, one paper packet shall be submitted to the

Engineer, and one electronic packet shall be submitted to the Asset Manager in the

Department’s Traffic Management Division within two days after the signal is turned

on. Information in the packets shall include all approved changes to the signal

installation. All detector loop lead-in tags and detector rack labels shall reflect all

approved changes to the signal installation.

Additional detector loop amplifier units and detector racks shall be supplied as

directed by the Engineer. Additional detector racks shall include all cables or harnesses280

including, but not limited to a SDLC cable for each added rack, interface panels and a

BIU to provide a complete and functional installation. Additional auxiliary BIU panels

shall include all cables or harnesses including, but not limited to a SDLC cable for

each additional auxiliary BIU panel, terminal strip on BIU panel and BIU to provide

a complete and functional installation.

For signal cabinets installed by the Contractor, where no detector loop or lead-in

work is included in the contract, the Contractor shall perform detector loop tagging,

testing, and vehicle simulator testing in accordance with 805.09, only to the extent of

documenting the test readings and confirming that all existing detector loops are290

connected correctly and all detector related equipment in the cabinet is operating

correctly.

The controller cabinet shall be mounted securely on a pole, pedestal, or concrete

foundation. All cabinets on concrete foundations shall be installed with the anchor

bolts inside. Controller cabinets on poles or pedestals shall be mounted at a height of

805.08

916

38 in. ±2 in. Pole mounted controller cabinets shall be fastened with two stainless steel

bands as shown on the plans. Signal cables and lead-in cable shall be run in conduit

from the controller cabinet to the signal support base and to detector housing as

indicated on the plans. Galvanized steel elbows shall be used on the detector housing300

as shown on the plans.

The Contractor shall wire the entrance switch and bring service cable up the riser

and out the weatherhead and leave 4 ft of cable outside the weatherhead. The utility

company, at their option, may bring the service cables to the load side of the entrance

switch. Meter bases, if required, shall be obtained from the power company.

A minimum of 12 in. and a maximum of 18 in. of loop wire duct will be allowed

in the detector housing for each loop lead. Concrete used in the installation of detector

housings shall be in accordance with 506.04(a), except 506.05 will not apply and310

calcium chloride shall not be used. A CMDS in accordance with 506.03 shall be

submitted, however, utilization of the Department provided spreadsheet is not

required. Where a portion of the road is closed or where there is no vehicular traffic,

then class A concrete in accordance with 702 may be used. The concrete shall be

placed flush with existing surface and shall be covered with a steel plate during the

setting time.

805.09Loop Wire Detector Installation

This work shall consist of placement and testing of loop wire detectors in

accordance with the installation details shown on the plans.320

The number, size, arrangement, and locations of loops shall be as shown on the

plans except that loop spacing shall be adjusted to avoid PCCP joints. Loops shall be

of a regular octagon shape with sides of 2 1/2 ft in length or a circular shape with a

diameter of 6 ft. Loops placed longitudinally adjacent in the same lane shall be spaced

15 ft from the center of one loop to the center of the next loop. Loops shall be arranged

so that no loop wire will be bent at an angle less than 120°. Regardless of

configuration, the loop installation shall match the intention of the loop tagging table.

330

Prior to installation, loop layout shall be approved in writing by the District

Traffic Engineer. The Contractor shall notify the District Traffic Engineer a minimum

of two business days prior to the date that loop layout approval is required. All

roadway centerlines, edge-lines and stop-bars pertinent to loop layout shall be

accurately and clearly identified at the time loop layouts are reviewed for approval.

An outline shall be painted where the loops are to be placed. The Contractor shall

ensure that the final installed location of each loop matches the intention and

functionality of the approved layout for loop spacing, lane width and geometry.

All loops and lead-in cables shall be tagged according to the plans and 805.07.

805.09

917

The slots shall be saw cut as shown on the plans. A diamond cutting blade shall

be used for sawing all loops. All saw-cut loops shall have individual saw cuts to the

detector housing. Joints shall be overlapped such that the saw cut at the corner is full

depth. Prior to installing roadway loop wire in the roadway saw-cuts, the saw-cuts

shall be cleaned in accordance with the manufacturer’s requirements for the joint

sealant to be used. After proper cleaning, the loop wire shall be installed. All loops

shall be wired clockwise as viewed from above. Loops shall be wired with four turns

or as specified then gently tamped with a blunt non-metallic tool. Backer rod 2 to 4 in.350

in length shall be spaced every 12 in. around the saw-cut above the wire and gently

tamped to hold the loop wire snug in the bottom of the saw-cut. Backer rod shall not

be continuous around the saw-cut.

After installation of the loop wire, the saw-cut shall be sealed with a joint sealant

material. The sealant shall be poured into the saw-cut making a water tight seal. The

joint sealant material shall be installed in accordance with the manufacturer’s

recommendations and 906.02. However, the joint configuration shall not apply. A

copy of the sealant manufacturer’s written application instructions shall be submitted

to the Engineer prior to any sealant operations. If the Contractor elects to use a sealant360

complying with 906.02(a)2, the sealant material shall be heated in a kettle or melter

constructed as a double boiler with the space between the inner and outer shells filled

with oil or other heat-transfer medium. This melter shall have a positive temperature

control and a mechanical agitator.

A backer rod shall be used for both cold applied sealants and hot poured sealants.

The sealant material shall fill the saw-cut as shown on the plans. All excess joint

sealant on the pavement surfaces shall be promptly removed.

The black lead-in wire shall be spliced to the loop wire which goes back to the370

field. Such wire shall be tagged as “Out/Loop (No.)”. The white lead-in wire shall be

spliced to the loop wire which comes in from the field. Such wire shall be tagged as

“In/Loop (No.)”.

For each loop cable and lead-in cable entering a handhole, there shall be 6 ft of

cable jacket remaining on each wire after the splice is complete. For each loop cable

and lead-in cable entering a detector housing, there shall be 2 ft of cable jacket

remaining on each wire after the splice is complete.

380

For all loop splices, there shall be a maximum of 1/2 in. of non-jacketed wire

measured from the end of each cable jacket to the edge of the splice waterproofing

material. The splice of the loop wire and lead-in cable shall be soldered and

waterproofed at the detector housing or handhole. Waterproofing shall consist of the

use of heat shrink tubing which has an internal coating sealant material. The heat

shrink tubing shall not be heated by means of a direct flame tool.

All testing and acceptance procedures performed by the Contractor shall be

805.09

918

performed in the presence of the Department personnel assigned by the Engineer. The390

Contractor shall notify the Engineer a minimum of two business days prior to the date

testing is to be performed.

The Contractor shall meter all new loop wire detectors or a new bank of loop wire

detectors by means of instruments capable of measuring electrical values for installed

loop wires and lead-in cables. The instruments shall measure inductance in

microhenries, resistance in ohms, induced AC voltage in volts, and leakage resistance

in megohms. All measuring tests shall be performed at the detector housing before the

loop wire is spliced to the lead-in cable, and at the cabinet after the loop wire is spliced

to the lead-in cable.400

for Loop Wire

One of the megohm probes shall be connected to ground and the other probe shall

be connected to the “in” or “out” loop wire. The remaining loop wire shall be isolated.

The test shall then be performed.

for Lead-in Cable

The two wires and shield of the lead-in cable at the cabinet shall be isolated and

taped. The test shall consist of recording four readings taken at the detector housing or

handhole as follows:

second probe to the shield. Record the reading.

and the second probe to the shield. Record the reading.420

wire and the second probe to the shield. Record the

reading.

and the second probe to the second lead-in wire. Record

the reading.

The lowest of the four readings taken above shall be recorded on the testing430

document for acceptance.

This test shall be performed after the splice at the detector housing is completed.

A water solution of one tablespoon of baking soda per pint of water shall be placed in

805.09

919

a metal container. The metal container shall be grounded and the splice shall be fully

submerged in the solution for 2 minutes. With the splice submerged, the shield of the

lead-in shall be connected to ground at the cabinet. One megohm probe shall then be

connected to ground and the other probe connected to one of the lead-in wires and the

reading recorded.440

After all detector loop testing is complete, the detector amplifiers shall be installed

and settings adjusted for proper operation at the intersection.

The frequency setting shall be adjusted using the amplifier’s display so that

adjacent loops in the roadway that are connected to different loop amplifiers have a

minimum difference of 5 kHz. This operating frequency setting does not apply to loops

that are adjacent to each other in the roadway but are connected to the same loop

amplifier.450

The sensitivity setting shall be adjusted using the amplifier’s display. With an

average size front wheel drive vehicle with the front axle centered over the back loop

of a series of loops, the sensitivity shall be adjusted in accordance with the

manufacturer’s recommendations.

The count output shall be enabled for all loops designated as counting loops. The

number of loops setting shall be set for loops designated for counting purposes and

shall be set to the number of loops connected to that loop amplifier.

460

This test shall be performed by dragging a test vehicle across the loops using a

non-conducting string. The test vehicle shall be fabricated with an 8 ft length of No. 6

bare copper wire formed into a 2 1/2 ft diameter circle. The two ends shall then be

electrically spliced.

The test shall be started with all detector amplifiers turned ‘Off’ except for one

approach. All amplifiers for that approach shall be turned ‘On’ and adjusted to the

proper settings. All traffic for the approach being tested shall be stopped and not

allowed to cross any loops during the test procedure for that approach. The simulator

shall be dragged slowly across each loop system in the same direction as to simulate a470

vehicle driving through the loop system. As the simulator crosses each loop an IMSA

level II certified Signal Technician shall verify that a call is displayed exclusively on

the corresponding loop amplifier, controller detector input and controller phases. After

completely verifying the loops on the first approach the amplifiers shall be left ‘On’,

and the amplifiers for the next approach to be tested shall be turned ‘On’ and adjusted

to the proper settings. The same procedure shall be followed for each remaining

approach.

With large intersections, as the test proceeds, it may become difficult to verify

that the calls are going to the correct detector inputs. In this case, traffic control shall480

be used to stop vehicles before reaching the loops for as many approaches as needed

805.09

920

to accurately complete the testing to the inspector’s approval. Testing may be paused

between lanes to allow traffic to clear.

The Contractor shall record all test readings, in triplicate, on tabular forms

provided by the Department or by copying the one included elsewhere herein. The

Contractor shall complete, sign, and date the forms before submitting them to the

District Traffic Engineer. The District Traffic Engineer will use these forms for

recording the Department’s readings on the corresponding space provided.490

In order for the loop detector installation to be accepted, the electrical values shall

be as follows:

shall be determined by means of digital readout meter which

drives the field loop system.

500

Loop wire or lead-in cable failing to meet this requirement shall be replaced at no

cost to the Department.

805.10Other Vehicle Detection Systems

When required, the Contractor shall furnish and install an alternative vehicle

detection system from the QPL of Traffic Signal and ITS Devices.510

805.11Steel Conduit

Conduit shall be installed to a depth of no less than 2 ft or more than 5 ft below

the finished grade unless otherwise specified or approved. Pockets or traps where

moisture might accumulate shall be avoided. Conduit shall be placed under existing

pavement by approved jacking or drilling methods. Pavement shall not be disturbed

unless otherwise specified. If specified, cuts in pavement areas shall be no greater than

24 in. wide. All cuts in the pavement and sidewalk areas shall be sawed. Sidewalk

removal and replacement shall be to the nearest tooled joint. Jacking and drilling pits

shall be kept at least 2 ft clear of the edge of any type of pavement or paved shoulder.520

Excessive use of water that may cause undermining of the pavement shall be avoided.

Continuous conduit runs shall not exceed 200 ft in length, unless otherwise shown on

the plans.

Expansion fittings as detailed on structure plans shall be installed where conduit

crosses an expansion joint in the structure. Where it is deemed inadvisable to install

expansion fittings in closely confined areas, the installation of approved flexible tubing

805.10

921

may be allowed. Such expansion joints or tubing shall be the same size as the conduit.

Any existing underground conduit to be incorporated into a new signal installation

shall be cleaned with a mandrel and blown out with compressed air before cable is530

drawn into pipe. All new conduit runs shall be cleaned and swabbed before cables are

installed. All conduit ends shall be capped and shall remain capped until the Contractor

is ready to pull cable into the conduit, at which time the caps shall be removed and

conduit bushings placed on each end to protect the cable. The inside surface of the

conduit shall be kept clean. Conduit to be installed, indicated on the plans for future

use of signal cables, shall be left in place with a pull cord on its entire length.

Larger size conduit may be used with no additional payment, but when it is used,

it shall be for the entire length of the run from outlet to outlet. Conduit runs as shown

on the plans are for bidding purposes only and may be changed, with permission, to540

avoid underground obstructions. A change order may be authorized if the conduit runs

can be made on the opposite side of the street to that shown on the plans in order to

avoid obstruction and traffic inconvenience or to avoid unnecessary tearing up of

existing pavement.

805.12PVC, HDPE, and Fiberglass Conduit

The method of installing PVC, HDPE and rigid fiberglass conduit underground

shall be the same as for steel conduit where applicable except trenches for the conduit

in areas with class X material as described in 206.02 shall be backfilled with 2 in. of

natural sand before the conduit is placed in the trench. Materials excavated may be550

used for backfill, if approved. If the Engineer deems it necessary, approved B borrow

shall be placed over the conduit to a depth of 12 in. and the remainder of the trench

shall be filled with excavated material.

Schedule 40 or 80 PVC, Schedule 40 HDPE, or rigid fiberglass conduit may be

used for conduit placed in trenches with expansion fittings used every 200 ft unless

otherwise indicated on the plans. Schedule 80 HDPE, or steel shall be used for conduit

that is jacked or bored. Schedule 80 PVC or rigid fiberglass shall be used for conduit

on bridges or other structures. A No. 6 AWG copper or No. 14 AWG aluminum ground

wire shall be included in all PVC, HDPE, and rigid fiberglass conduit.560

805.13Foundations

Foundations for traffic signal structures, cabinets, and pedestals of the type

specified shall be constructed, or existing M foundations shall be modified, as shown

on the plans or as directed. Pedestal bases shall be plumb and firmly attached to the

anchor bolts either by using leveling nuts or shims if top of the foundation is not level.

Grouting shall be used when necessary to fill any gap between pedestal base and

foundation. Pipe pedestals shall be screwed tightly into the bases and secured with a

stainless steel pin. Power and signal cables shall then be pulled from the base into the

cabinet. Curing of concrete shall be in accordance with 702.22.570

The foundation concrete for traffic signal cantilever structures shall be placed

monolithically and shall have no construction joint. Structure bases shall be plumb and

805.13

922

attached to the anchor bolts using leveling nuts. A tooled line or other type of

permanent marking shall be provided on the top of the foundation to indicate the

direction of the conduits.

During excavation of the foundation, all material shall be removed to the full

depth as shown on the plans, except if class X material is encountered, the work shall

be performed in accordance with 206.02(b).580

805.14Final Clean-Up

When the installation is completed, all disturbed portions of sidewalk, pavement,

shoulders, driveways, and sod, shall be cleaned and any excess excavation or other

materials shall be disposed. All cutting in the sidewalk and pavement areas shall be

done with a saw. Sidewalk removal and replacement shall be to the nearest tool joint.

Unless otherwise directed, cuts in pavement areas shall be no greater than 12 in. in

width.

Within 30 calendar days after completion of the work, as-built drawings shall be590

submitted in electronic format to the Engineer. The signal as-built drawings shall

indicate the as-built location of steel strain poles, signal cantilevers, service points,

controller cabinet, loop detectors, conduit runs, and signal handholes.

805.15Method of Measurement

Controller and cabinet; controller cabinet foundation; disconnect hanger;

handhole, signal; loop detector delay amplifier; loop detector rack; pedestrian push

button; pedestrian signal head; signal cantilever structure, combination arm; signal

cantilever structure, drilled shaft foundation type; signal cantilever structure, dual arm;

signal cantilever structure, single arm; signal cantilever structure, single arm,600

combination arm; signal cantilever structure, spread footing foundation type; signal

detector housing; signal pole; signal pole foundation; signal service; span catenary and

tether; traffic signal head; and traffic signal head, retrofit; will be measured by the

number of units installed.

The pay length for a signal cantilever arm or combination arm will be the length

shown in the Schedule of Pay Items.

Conduit of the type specified will be measured by the linear foot from outside to

outside of foundations. All signal cable will be measured by the linear foot.610

Saw-cut for roadway loop detector and sealant will be measured by the linear foot

for the full depth of slot cut in the pavement as shown on the plans or as directed.

If class X material is encountered during foundation excavation, measurement

will be made in accordance with 206.10.

Traffic signal installation, flasher installation, miscellaneous equipment for traffic

signals, and final cleanup in accordance with 805.14 will not be measured for payment.

805.14

923

620

Reinforcing bars will not be measured for payment.

Traffic signal equipment removal will be measured per each installation to be

removed. Transportation of salvageable signal equipment will not be measured.

805.16Basis of Payment

Traffic signal installation and flasher installation, all of the type, new or

modernized, and the location number specified, will be paid for at a contract lump sum

price.

630

If specified as pay items, controller and cabinet; controller cabinet foundation;

disconnect hanger; handhole, signal; loop detector delay amplifier; loop detector rack;

pedestrian push button; pedestrian signal head; signal cantilever structure, single arm;

signal cantilever structure, combination arm; signal cantilever structure, single arm,

combination arm; signal cantilever structure, dual arm; signal cantilever structure,

drilled shaft foundation type; signal cantilever structure, spread footing foundation

type; signal detector housing; signal pole; signal pole foundation; signal service; span

catenary and tether; traffic signal head; and traffic signal head, retrofit; will be paid

for at the contract unit price per each.

640

Conduit of the type specified will be paid for at the contract unit price per linear

foot. The cost of any backfill, ground wire, or expansion fittings shall be included in

the cost of conduit.

Saw-cut for roadway loop detector and sealant, and signal cable will be paid for

at the contract unit price per linear foot.

The removal of existing traffic signal equipment designated to be removed will

be paid for at the contract unit price per each for traffic signal equipment, remove for

each location removed. When designated as a pay item, the transportation of650

salvageable signal equipment will be paid for at the contract lump sum price for

transportation of salvageable signal equipment.

Class X excavation will be paid for in accordance with 206.11.

Miscellaneous equipment for traffic signals will be paid for at a contract lump

sum price.

Payment will be made under:

660

Pay Item Pay Unit Symbol

Conduit, ____ ............................................................................ LFT

type

Controller and Cabinet, _____................................................... EACH

type

805.16

924

Controller Cabinet Foundation, _____ ...................................... EACH

type

Disconnect Hanger .................................................................... EACH

Flasher Installation, ______, Location No. _____..................... LS670

type

Handhole, Signal, _______ ....................................................... EACH

type

Loop Detector Delay Amplifier, ______,_____ Channel.......... EACH

type no.

Loop Detector Rack................................................................... EACH

Miscellaneous Equipment for Traffic Signals ........................... LS

Pedestrian Push Button, _____ .................................................. EACH

type

Pedestrian Signal Head, _____, ________ ................................ EACH680

type lens size

Saw-Cut for Roadway Loop Detector and Sealant .................... LFT

Signal Cable, _____, Copper, _____ C/ _____ ......................... LFT

type conductors/size

Signal Cantilever Structure, Combination Arm _____ ft .......... EACH

length

Signal Cantilever Structure, Drilled Shaft Foundation, ____ .... EACH

type

Signal Cantilever Structure, Dual Arm ___ ft, ___ ft ................ EACH

length length690

Signal Cantilever Structure, Single Arm ___ ft,

length

Combination Arm ___ ft..................................................... EACH

length

Signal Cantilever Structure, Single Arm ______ ft ................... EACH

length

Signal Cantilever Structure, Spread Footing

Foundation, _______ .......................................................... EACH

type

Signal Detector Housing............................................................ EACH700

Signal Pole Foundation, _____ in. x _____ in. x _____ in........ EACH

Signal Pole, ______, _____ ft ................................................... EACH

type length

Signal Service ............................................................................ EACH

Span, Catenary, and Tether ....................................................... EACH

Traffic Signal Equipment, Remove ........................................... EACH

Traffic Signal Head, _____ Section, Retrofit ........................... EACH

no.

Traffic Signal Head, _____, Section, __________ .................... EACH

no. lens size710

Traffic Signal Installation, _____, Location No. _____ ............ LS

type

805.16

925

Transportation of Salvageable Signal Equipment ..................... LS

The cost of the controller and cabinet, conduit, foundations, vehicle detection,

pedestrian signals, signal heads, signal poles, signal service, signal cable and all

equipment or materials required to complete the installation shall be included in the

cost of traffic signal installation.

The cost of the controller and cabinet, conduit, foundations, signal heads, signal720

poles, signal service, signal cable and all equipment or materials required to complete

the installation shall be included in the cost of flasher installation. For a solar powered

flasher, the cost of the solar panel, battery cabinet, program timing module, signal

heads, wiring, and all hardware required to complete the installation shall be included

in the cost of flasher installation.

The cost of the controller assembly, standard loop detector racks, all wiring,

hardware, and associated equipment required to operate the intersection shall be

included in the cost of controller and cabinet.

730

The cost of concrete, conduits, grounding bushings, ground rod, ground wire,

drainage, anchor bolts, and all hardware required to complete the installation shall be

included in the cost of controller cabinet foundation.

The cost of all work and hardware required to properly install loop detector delay

amplifier, counting or non-counting, as shown on the plans or as directed shall be

included in the cost of loop detector delay amplifier.

The cost of concrete reinforcing pipe and ring or polymer concrete box, cover and

attachment hardware, handhole bottom if required, and aggregate as shown on the740

plans shall be included in the cost of handhole, signal.

The cost of any supplementary loop detector rack, all wiring, hardware, detector

panel, BIU, and associated equipment shall be included in the cost of the loop detector

rack.

The cost of the push button, pedestrian actuated signal sign, any accessible

pedestrian signal components, and all hardware required to complete the installation

shall be included in the cost of pedestrian push button.

750

The cost of signal face hook-up wire, pole plates and arms for side mounts, pipe

arms, signal brackets, bulbs, weatherhead, and all additional hardware required to

assemble a combination of pedestrian signal indications as shown on the plans shall

be included in the cost of pedestrian signal head.

The cost of the slot cut on the pavement, backer rod, loop sealant, and all testing

in accordance with 805.09 shall be included in the cost of saw-cut for roadway loop

and sealant.

805.16

926

The cost of all work and hardware required to properly install overhead or760

underground signal cable, signal, fiber optic, or interconnect, as shown on the plans or

as directed shall be included in the cost of signal cable.

The cost of signal pole section 2 and combination arm, all hardware including the

metal skirt base plate, where necessary, to complete the installation as shown on the

plans shall be included in the cost of the signal cantilever structure, combination arm.

The cost of concrete, reinforcing bars, conduits, ground rod, ground wire,

grounding bushings, anchor rods, and all hardware required to complete the

installation of the drilled shaft or spread footing foundation for signals shall be770

included in the cost of signal cantilever structure, drilled shaft or spread footing

foundation.

The cost of signal pole and dual arms, all hardware including the metal skirt base

plate, where necessary, to complete the installation as shown on the plans shall be

included in the cost of the signal cantilever structure, dual arm.

The cost of signal pole section 1 and single arm, all hardware including the metal

skirt base plate, where necessary, to complete the installation as shown on the plans

shall be included in the cost of the signal cantilever structure, single arm.780

The cost of signal pole section 1, 2 and single arm, combination arm, all hardware

including the metal skirt base plate, where necessary, to complete the installation as

shown on the plans shall be included in the cost of the signal cantilever structure, single

arm, combination arm, when structure with single arm and combination arm is

required in the same contract.

The cost of aluminum casting, enclosure concrete, conduit and elbow, and all

hardware required to complete the installation shall be included in the cost of signal

detector housing.790

For a steel signal pole, the cost of the base plate, metal skirt base plate, handhole

and cover grounding lug, 2 in. pipe cable entrance, J hook, and top cover as shown on

the plans shall be included in the cost of signal pole.

For a timber signal pole, the cost of downguys, anchor rods, downguy guards, and

hub-eyes as shown on the plans, and all hardware required to complete the installation

shall be included in the cost of signal pole.

For a signal pedestal, the cost of the pedestal metal base, pedestal pole, pole cap,800

and all hardware required to complete the installation shall be included in the cost of

signal pole.

805.16

927

The cost of concrete, reinforcing bars, conduits, ground rod, ground wire,

grounding bushings, anchor rods, and all hardware required to complete the

installation of the signal pole foundation shall be included in the cost of signal pole

foundation.

The cost of weatherhead, 1 in. conduit riser, entrance switch, 1 to 2 in. conduit

reducer, ground rod, ground wire, and all hardware required to complete the810

installation, including the meter base when required and supplied by the utility

company shall be included in the cost of signal service.

The cost of steel pole bands or straight eye bolts, span, catenary, and tether of wire

rope cables, cable rings, Type A support cable, wire rope clips, safety cable, thimble,

service sleeve, and all hardware required to complete the installation as shown on the

plans shall be included in the cost of span, catenary, and tether.

The cost of signal face hook-up wire, pole plates and arms for side mounts, mid-

mast arm mount, pipe arms, signal brackets, visors, louvers, bulbs, span hanger,820

backplates, balance adjuster, weatherhead, and all additional hardware required to

assemble a combination of signal faces as shown on the plans shall be included in the

cost of traffic signal head.

The cost of removing the existing traffic signal head, salvaging the existing LED

indicators, replacing the existing signal head with a new housing and backplate, and

reinstalling shall be included in the cost of traffic signal head, retrofit.

The cost to repair or replace damaged or lost salvageable traffic signal equipment

shall be at no additional cost to the Department.830

The cost of excavation, backfill, final cleanup in accordance with 805.14, the cost

of re-painting existing metallic equipment to be re-used, the preparation and

transmittal of as-built drawings and controller assembly document packets, and

necessary incidentals shall be included in the cost of the pay items in this section.