ConnDOT: SECTION 11.1-31
CONNDOT

SECTION 11.1-31

SECTION 11.01

POLE ANCHOR

11.01.01—Description: This work shall consist of furnishing and installing a pole anchor of the type specified on a new or an existing pole at the location shown on the plans or as directed by the Engineer. The quantity of pole anchors shown on the plans are approximate only. The actual number and location of anchors shall be such as to provide adequate support for those poles to which the span is being attached as determined in the field.

11.01.02—Material: The materials for this work shall conform to the pertinent requirements of Article M.16.04.

11.01.03—Construction Methods: A lead of approximately 20 feet (6 meters) should be maintained from the pole when placing the anchor. The hole for the anchor shall be mechanically dug, and the diameter will be the nominal size of the unexpanded diameter of the anchor. A slot shall be cut in the side of the hole to permit the anchor rod to line up with the guy strand. The anchor rod shall extend above the ground not less than 6 inches (150 millimeters) nor more than 12 inches (300 millimeters). Prior to installation, the anchor shall be locked in its expanded position. This shall be done by marking the expanding bar end away from the anchor, with the anchor in the expanded position. The Contractor shall collapse the anchor tie plates and install in the hole with the expanding bar, and expand into undisturbed earth with several heavy blows on the expanding bar. The anchor will be fully expanded when the mark on the expanding bar is opposite the top of the anchor rod. All backfill is to be thoroughly tamped as it is being placed. When required on wood poles, a wet porcelain strain insulator shall be installed on the guy strand as shown on the installation detail sheet. Care shall be exercised in placing anchors in the vicinity of private property. Where necessary state forces will establish property lines.

11.01.04—Method of Measurement: This work will be measured for payment by the number of anchors completed and accepted in place.

11.01.05—Basis of Payment: This work will be paid for at the Contract unit price each for "Pole Anchor," complete in place, which price shall include all materials, anchor, anchor rod, anchor guy strand wire, anchor guy protector, excavation and backfilling, and all necessary fittings, hardware, tools, labor and work incidental thereto. Only those anchors installed on existing poles will be paid for under this item. When new woodpoles are installed the required anchor is paid for in the price of the pole.

Pay Item Pay Unit
Pole Anchor  ea. (ea.)

 

 

SECTION 11.02

PEDESTALS

11.02.01—Description: This item shall consist of furnishing and installing a pedestal of the type and size specified on a prepared foundation at locations and to the details shown on the plans, or as ordered, and in accordance with these specifications.

11.02.02—Materials: The materials for this work shall conform to the requirements of Article M.16.03.

11.02.03—Construction Methods: The complete unit shall be erected vertically, mounted plumb, and shall be securely bolted to the foundation. All pedestals shall be effectively grounded using a 5/8-inch x 10-foot (16-millimeter x 3-millimeter) copper ground rod with #8 AWG solid, bare, tinned copper wire attached to the pedestal by a stainless steel bolt and to the ground rod by a square head bolt clamp.

11.02.04—Method of Measurement: This work will be measured for payment by the number and type of pedestals specified, completed and accepted in place.

11.02.05—Basis of Payment: This work will be paid for at the Contract unit price each for "Pedestal" of the type and size specified, which price shall include all materials, pedestal base, shaft, ground wire, paint, painting, labor, tools, equipment, miscellaneous fittings and work incidental thereto.

Pay Item Pay Unit
Pedestal (Type and Size)  ea. (ea.)

 

SECTION 11.03

SPAN POLE

11.03.01—Description: This item shall consist of furnishing and installing a steel span pole, as indicated on the plans in conformity with these specifications or as directed by the Engineer.

This item shall also include furnishing a wood span pole and installing it at the location designated on the plans, or as indicated by the Engineer, and in conformity with these specifications.

11.03.02—Materials: The materials for this work shall conform to the requirements of Article M.16.04.

11.03.03—Construction Methods:

1. Steel Pole: Each pole shall be securely bolted to its base, electrically grounded, and installed per the manufacturers specifications. The pole shall be oriented so the handhole is away from traffic. The steel pole shall be raked by means of a double nut construction. The opening between the steel pole base and the concrete foundation shall be grouted and neatly finished with a non-shrinkable, non-stainable grout that conforms to the requirements of Article M.03.01-12. The mast arm anchor bolts are specified in M.15.02.3.

Installation Procedure:

A. Install leveling nuts onto anchor bolts with the approximate pole "rake."

B. Install steel pole base plate onto leveling nuts and tighten the anchoring nuts loosely.

C. The unloaded pole shall be "raked" back according to manufacturers specifications by adjusting the nuts as necessary. Upon completion the "rake" should give the pole a plumb look under load.

D. Tighten up the anchoring nuts to a "snug-tight" condition, while insuring that the leveling nuts are always in firm contact with the base plate. A "snug-tight" condition is defined as the tightness attained by the full effort of a person using a spud wrench.

E. Check all nuts for looseness after the traffic lights and other loads are in place, paying special attention to the leveling nuts on the tension bolts. Retighten any loose nuts to a "snug-tight" condition. Upon completion each pole shall be securely bolted to its base and have a plumb appearance.

F. Grout underneath base plate.

G. Install handhole cover, anchor bolt covers, and pole cap.

2. Wood Pole: The hole into which the pole is to be placed shall be mechanically dug, and its diameter shall be only large enough to accept the pole and the tamper and shall be 6 feet (1.8 meters) deep.

A lead of approximately 20 feet (6 meters) should be maintained from the pole when placing the anchor. The hole for the anchor shall be mechanically dug, and the diameter will be the nominal size of the unexpanded diameter of the anchor. A slot shall be cut in the side of the hole to permit the anchor rod to line up with the guy strand. The anchor rod shall extend above the ground not less than 6 inches (150 millimeters) nor more than 12 inches (300 millimeters).

Prior to installation, the anchor shall be locked in its expanded position. This shall be done by marking the expanding bar end away from the anchor, with the anchor in the expanded position. The Contractor shall collapse the anchor tie plates and install in hole with expanding bar, and then expand into undisturbed earth with several heavy blows on the expanding bar. The anchor will be fully expanded when the mark on the expanding bar is opposite the top of the anchor rod. All backfill is to be thoroughly tamped as it is being placed. A wet porcelain strain insulator shall be installed on the guy strand at a minimum height of 8 feet (2.4 meters). The installation of the guy strand will be as shown on the installation detail sheet.

3. Combination Steel Pole: Specifications for steel poles in Subarticle 1 apply to combination steel poles including the following specifications.

When illumination service is underground, a nylon pull rope shall be installed from the end of the luminaire bracket to the pole base. At combination poles where service is overhead, a separate rigid service clevis, 2-inch (50-millimeter) entrance fitting and weatherhead shall be installed. A nylon pull rope shall be installed from the end of the bracket to the clevis. The luminaire bracket shall be attached to the pole shaft perpendicular to the centerline of the roadway as shown on the plans. Clamp-type brackets are permissible for ease and adjustment. The mounting height shall be a nominal 30 feet (9 meters) measured from the center of the light source to the pavement directly below. It shall be the responsibility of the Contractor to arrange with the utility company for installation of the luminaire on the bracket and secondary service to the luminaire.

11.03.04—Method of Measurement: This work will be measured for payment by the number of poles of the type specified, completed and accepted in place.

11.03.05—Basis of Payment: This work will be paid for as follows:

1. Steel Span Pole: This work shall be paid for at the contract unit price each for "Steel Span Pole" or "Combination Steel Span Pole" of the type specified, which price shall include all materials, pole, pole cap, handhole, handhole cover, ground wire, grounding nut, anchor bolt covers, entrance fittings, service clevis, span clamps, paint, painting, grouting, labor, tools, luminaire bracket, miscellaneous hardware, and work incidental thereto.

2. Wood Span Pole: This work will be paid for at the contract unit price each for "Wood Span Pole," complete in place, which price shall include all materials, pole, anchor, anchor rod, anchor guy strand wire, anchor guy protector, neutral bracket, excavating and backfilling, and all necessary fittings, hardware, tools, labor and work incidental thereto.

Pay Item Pay Unit
(Type) Steel Span Pole ea. (ea.)
(Type) Steel Combination Span Pole (Bracket Type) ea. (ea.)
Wood Span Pole ea. (ea.)

 

 

 

SECTION 11.05

TRAFFIC SIGNALS

11.05.01—Description: This item shall consist of furnishing and installing a traffic control signal, of the type specified, at the location shown on the plans or indicated by the Engineer and in conformity with these specifications.

11.05.02—Materials: The materials for this work shall conform to the requirements of Article M.16.06.

11.05.03—Construction Methods: Each completely assembled traffic signal unit shall normally be installed as follows:

Each traffic signal head shall consist of the appropriate number of sections and faces, terminal blocks and mounting equipment, as indicated. Signal heads shall be erected vertically in accordance with the specific type of mountings shown on the installation plan. A balance adjuster shall be installed between the span wire clamp and the wire entrance to provide a plumb appearance for the signal assemblies that are unbalanced.

No signal head shall be erected until the controller for that signal is installed.

All traffic signals shall be mounted in the manner as shown on the plans, using fittings and attachments standard to the trade.

When traffic signals are span-mounted, they shall be installed so the lowest part of the signal head is not less than 16 feet (4.9 meters) or more than 17 feet (5.2 meters) above the pavement grade beneath the signal head.

If couplings are used in "nippling down" a traffic signal or in the construction of signal heads, they shall be drilled, tapped, and furnished with a set screw, or spot welded to eliminate twisting. Entrance fittings and locking nuts shall also be furnished with set screws to eliminate twisting. Signal ways consisting of more than three sections shall be assembled with appropriate numbers of one-way, one-section units.

When adding sections to existing or new signal heads the contractor shall provide all necessary mounting equipment, including new brackets if required, to adapt to the existing heads.

11.05.04—Method of Measurement: The quantity to be paid for under this item will be the number of completed, installed and accepted traffic signal units of the type specified.

11.05.05—Basis of Payment: This work will be paid for at the Contract unit price each for "Traffic Signal" of the type specified which price shall include all materials, housing, brackets, conduit, visors, tunnel visors, louvers, back plates, optical unit, lamp socket, lens, mountings, balance adjuster, paint, painting and necessary equipment, tools, labor and work incidental thereto.

No direct payment will be made for furnishing and installing visors or lenses required on existing traffic signals, but the cost thereof shall be included in the costs of the various traffic signal items.

Pay Item Pay Unit
Traffic Signal (Type) ea. (ea.)

 

SECTION 11.06

PEDESTRIAN SIGNAL

11.06.01—Description: This item shall consist of furnishing and installing a pedestrian signal of the type specified at locations shown on the plans or as indicated by the Engineer in conformity with these specifications.

11.06.02—Materials: The materials for this work shall conform to the requirements of Article M.16.07.

11.06.03—Construction Methods: Each completely assembled pedestrian signal unit shall be installed as follows:

Each pedestrian signal shall be erected vertically in accordance with the specific type of mountings shown on the plans. Each signal face shall be pointed in the direction of the approaching pedestrian traffic it is intended to control.

During construction, and until the signals are placed in actual operation, the signal housing shall be hooded. Every part of the signal head shall be at least 12 inches (300 mm) behind outer edge of the shoulder of the road.

The audible pedestrian signal shall be attached to a traffic signal assembly, using standard hardware as shown on the plan. The volume shall be adjusted to a minimum sound level that can be heard throughout the intersection, or as directed by the Engineer. The 120 VAC signal output shall be connected to a conflict monitor input and shall conflict against all opposing movements.

11.06.04—Method of Measurement: The quantity to be paid for under these items will be the number of completed, installed and accepted pedestrian signals of the type specified.

11.06.05—Basis of Payment: This work will be paid for at the Contract unit price each for "Pedestrian Signal," of the type specified which price shall include all materials, housing, optical unit, visor, miscellaneous fittings and parts, equipment, paint and painting, labor and work incidental thereto.

Pay Item Pay Unit
Pedestrian Signal (Type)  ea. (ea.)

 

 

SECTION 11.07

PEDESTRIAN PUSH BUTTON

11.07.01—Description: This item shall consist of furnishing and installing pedestrian push buttons of the type specified at the location shown on the plans or as indicated by the Engineer and in conformity with these specifications.

11.07.02—Materials: The materials for this work shall conform to the requirements of Article M.16.08.

11.07.03—Construction Methods:

A push button advisory sign 9 inches x 12 inches (230 millimeters x 300 millimeters) shall be attached to the saddle as indicated in the case of a pole or pedestal mounted push button or directly to the controller cabinet in the case of a surface mounted push button installed on the side of a controller cabinet. The push button and sign shall be installed on the crosswalk side of a pole or pedestal perpendicular to the direction of walking. On a controller cabinet, the push button and sign shall be surface mounted on the side of the controller cabinet nearest to the crosswalk.

A 1/8-inch (3-millimeter) aluminum backing plate measuring 9 inches x 12 inches (230 millimeters x 300 millimeters) shall be used with all pole or pedestal-mounted advisory signs that have a push-button casting which is smaller in dimension than the 9-inch x 12-inch (230-millimeter x 300-millimeter) sign that is being attached. The backing plate shall conform exactly to the shape of the sign.

When the push button casting is as large as the 9-inch x 12-inch (230-millimeter x 300-millimeter) sign being attached, the aluminum backing plate will not be required.

When surface mounted on a controller cabinet, the sign shall be attached by drilling and tapping four holes, corresponding to the holes in the sign, for 10-32 machine screws, and mounting the sign with four 1/2-inch (13- millimeter) 10-32 brass or stainless steel machine screws. Care is to be taken in drilling and tapping not to damage any wiring or equipment in the cabinet, including the terminal blocks. The push button shall be similarly mounted, using machine screws of proper size and length to conform with the requirements of the push button. A suitable hole, properly reamed or smoothed to eliminate rough edges, shall be drilled in the cabinet to match the comparable opening in the back of the push button base through which the lead wires are run.

All buttons shall be furnished with enough No. 16 AWG THWN or THHN stranded wire to make a connection in the walk fixture or in the base of the 4-foot 4-inch (1.3-meter) aluminum pedestal whichever applies.

11.07.04—Method of Measurement: The quantity to be paid for under this item will be the number of pedestrian push buttons, of the type specified installed, operating and accepted.

11.07.05—Basis of Payment: This work will be paid for at the Contract unit price each for "Pedestrian Push Button and Sign, Pole-Mounted," "Pedestrian Push Button and Sign, Pedestal Mounted," or "Pedestrian Push Button and Sign, Surface-Mounted," as the case may be, which price shall include push button, advisory sign, saddle, wire, all material, equipment, paint, painting, tools, labor and work incidental thereto.

Pay Item Pay Unit
Pedestrian Push Button and Sign (Type) ea. (ea.)

 

 

SECTION 11.08

CONTROLLERS

11.08.01—Description: This item shall consist of furnishing and installing a pre-timed traffic controller, of the type specified for controlling the operation of the traffic signals as indicated on the sequence and timing chart on the plans, and all necessary auxiliary equipment required for satisfactory operation of the signal, at the location indicated on the plans or indicated by the Engineer and in conformity with these specifications.

This item shall also consist of furnishing and installing an Actuated Controller, which shall be a completely digital solid state unit, for controlling the operation of the traffic signals, as indicated on the sequence and timing chart on the plans, and all necessary auxiliary equipment required. The control equipment shall be installed at the location shown on the plans or as directed by the Engineer, and in conformance with these specifications.

11.08.02—Materials: The materials for this work shall conform to the requirement of Article M.16.09.

11.08.03—Construction Methods: The controller, mounted in controller cabinet, shall be installed at the locations shown on the plans in the following manner:

The pole-mounted controller cabinet shall be attached to the face of the pole with the use of saddle measuring 3 inches x 16 inches x 7/8 inches (76 millimeters x 406 millimeters x 22 millimeters). The pole shall be drilled and tapped to accept two 3/8-inch x 1 1/2-inch (10-millimeter x 38-millimeter) round head, cadmium-plated, machine screws to fasten the controller cabinet to the pole. The saddle shall have two 1/2-inch (13-millimeter) diameter guide holes for 3/8-inch (10-millimeter) screws for fastening the controller cabinet. A hole shall be drilled in the pole, using a hole saw, to accept a 2 1/2-inch (63.5-millimeter) coupling, which is to be welded to the pole. A 90° pull box shall be attached to the coupling with a standard pipe nipple, the bottom of the cabinet shall have an opening for cable entrance and four holes to fasten the flange of the 90° pull box.

The cabinet, when pedestal-mounted, shall be mounted with the use of a standard 4-inch (100-millimeter) pedestal adapter as shown on the installation detail sheet.

The base mounted cabinet shall have the base casting attached to the foundation and leveled before the cabinet proper is bolted to the base. A mastic type compound conforming to ASTM C-647 shall be used between the cabinet proper and the base casting to make the two units rain-tight.

11.08.04—Method of Measurement: This work will be measured for payment by the number of each type controller completed, operating, and accepted in place.

11.08.05—Basis of Payment: This work will be paid for as follows:

1. Pre-timed controller will be paid for at the Contract unit price each for "Pre-timed Controller" of the type specified, which price shall include cabinet, timer, timing dial, unit motor, signal-switching unit, panel board, flasher, jack-mounted relays, auxiliary equipment, paint and painting, and all materials, equipment, tools and labor incidental thereto.

2. Actuated controller will be paid for at the Contract unit price each for "Actuated Controller" of the type specified, which price shall include controller, controller cabinet, wiring, flasher unit, radio line filter, necessary fittings for mounting, miscellaneous fittings, auxiliary equipment, paint and painting, and all materials, equipment, tools, and labor incidental thereto.

Pay Item Pay Unit
Pre-timed Controller (Type) ea. (ea.)
Actuated Controller (Type) ea. (ea.)

 

 

SECTION 11.11

LOOP VEHICLE DETECTOR AND SAWCUT

11.11.01—Description: These items shall consist of:

1. Furnishing and installing a loop vehicle detector in conformity with these specifications.

2. Furnishing and installing Sawcut to be used with a loop vehicle detector as shown on the plans and in conformity with these specifications.

11.11.02—Materials: The materials for this work shall conform to the requirements of Article M.16.12.

11.11.03—Construction Methods:

1. The loop vehicle detector shall be mounted in the controller cabinet. Wiring shall be done in a neat manner, and each wire shall be fitted with a spade lug and attached to the proper terminal.

A loop identification tag shall be permanently attached to each loop amplifier harness. The tag shall be pre-printed by the manufacturer so that the Contractor can record the pertinent information on the tag. The following information shall be recorded legibly on the tag by the Contractor, with indelible ink, in the order shown.

CT D.O.T.

 

LOOP NO.:___________________

PHASE CALL:________________

FIELD LOCATION:_____________

____________________________

____________________________

LOCAL DET. NO.:______________

SYSTEM DET. NO.:_____________

CABINET TERMINALS:_________

____________________________

 

Field location shall include the route number or street name, the direction (such as Northbound), and the lane (left, center, right).

Each system detector shall be connected to the corresponding system sensor input of the local computer communications unit (either the C.I.C.U. or the C.L.L.C.U.).

Example: S.D. 1 connected to System Sensor 1

S.D. 2 connected to System Sensor 2

2. Loop detectors installed in new or resurfaced pavements shall have the slots saw cut in the pavement base course and the loop wires placed and sealed before the placing of the pavement wearing course.

No loop detector saw cut shall be placed over a patched trench or existing pavement without the approval of the Engineer. The Contractor shall remove the existing pavement and replace it with new pavement for installation of the loop detectors, at the direction of and within the limits prescribed by the Engineer, where the condition of the existing pavement is not suitable for installation. The work shall be performed under the items "Removal of Bituminous Surface," "Cut Bituminous Concrete Pavement," "Material for Tack Coat," and "Bituminous Concrete Class 1." The existing pavement shall be removed a minimum of 3 inches (75 millimeters) in depth. The replaced pavement shall be overlaid as directed. The loop detector shall be installed in the new pavement, under the overlay.

The size of the loop shall be as shown on the plans and shall be made using a power saw having an abrasive or diamond blade 3/8 inch (9.5 millimeters) wide. The depth of the slot shall be 1 3/4 inches to 2 inches (45 millimeters to 50 millimeters) and shall extend from the loop to the location shown on the plan. The cuts shall overlap at the corners of the loop and at any angles in the saw cut to the controller to ensure full depth. The corners are to be rounded off by drilling a 1 1/4-inch (32-millimeter) diameter hole to eliminate kinking of the wire. When the cutting has been completed, the slot shall be cleaned of all cutting dust and grit with oil-free compressed air. The slot shall be completely dry before inserting the wire. The entire loop


and lead-in shall consist of 1 continuous #14 stranded wire encased in tubing, unless otherwise shown on the plans. The lead-in wires shall be twisted together with at least 5 turns per foot (16 turns per meter) and taped at 2-foot (0.6-meter) intervals, beginning at a point where the wire leaves the saw cut and enters the plastic conduit to the terminals in the controller cabinet, or when spliced to a 2-conductor lead-in cable. The twisted wire shall remain together and shall not be coiled at any point. Splices will not be permitted at any point of the loop or lead-in unless otherwise indicated on the plans or as directed by the Engineer.

At the time of installing the loop wire, the ends of the tubing shall be sealed to prevent any entrance of moisture into the tubing. When splices are required in handholes or junction boxes, they shall be made in accordance with the installation details. The saw cuts on all lead-ins shall be as shown on the plans or as directed by the Engineer. The number of turns of wire for each loop shall be as shown on the plans. After installation, the wire shall be checked for slack or raised portions in the saw cut slot. A paint mix stock or similar blunt instrument shall be used to push the wire in the slot. The wire shall be held in the slot with wooden pegs or by inserting wedges formed from 1-inch (25-millimeter) sections of the plastic tubing, folded before insertion. The loop should be tested prior to sealing the saw cut. An unacceptable loop installation would consist of leakage to ground below 10 megohms or an open circuit. The saw cut shall then be filled with plastic compound to a level of approximately 1/16 inch (2 millimeters) below the pavement surface. In no case shall the plastic compound overflow the saw cut and all excess material shall be removed. The plastic compound shall be applied in accordance with the manufacturer's recommendations. The plastic compound shall adhere to the sides of the saw cut and not show a separation when pressure is applied by a blunt instrument.

Each pair of lead-in wires in the cabinet shall be tagged and identified to determine phase and geographical location of each loop, Example-: "Phase 4—East End Bank St.—Right Lane."

When a 1-part urethane elastomeric compound is used to seal the sawcut the manufacturer's installation procedure shall be followed.

The sawcut, complete and tested with wire installed and retained with plastic wedges, shall be filled with the elastomeric compound from the bottom up. The sawcut shall be filled to 0.125 inch (3 millimeters) from the surface of the pavement. The elastomeric compound shall not be applied if the pavement surface temperature is less than 40oF or more than 100oF (4° C or more than 38° C).

11.11.04—Method of Measurement: This work will be measured for payment as follows:

1. Loop vehicle detectors will be measured for payment by the number of loop vehicle detectors of the type specified, completed, operating and accepted in place.

2. Loop Detector Saw Cut: The quantity to be paid for under this item shall be the actual number of linear feet (meters) of saw cut, measured along the center of the cut, with #14 Stranded Wire encased in tubing completely installed, tested and accepted in place. #14 Stranded Wire encased in tubing shall not be measured for payment separately but shall be included in the measurement for saw cut.

11.11.05—Basis of Payment:

1. Loop vehicle detector will be paid for at the Contract unit price each for "Loop Vehicle Detector" of the type specified, which price shall include connecting cable, sensor unit, all materials, labor and work incidental thereto.

2. Loop detector saw cut will be paid for at the Contract unit price per linear foot (meter) of "Loop Detector Saw Cut," which price shall include; saw cut, #14TW stranded wire (including that to handholes, traffic control foundations or controller cabinets), necessary fittings, flexible plastic tubing, plastic compound, splicing and connecting, equipment, labor, materials and work incidental thereto.

Pay Item Pay Unit
Loop Vehicle Detector (Type) ea. (ea.)
Loop Detector Saw Cut l.f. (m)

 

 

 

SECTION 11.12

MAGNETIC VEHICLE DETECTOR

11.12.01—Description: This item shall consist of furnishing and installing a magnetic vehicle detector of the type specified at the location shown on the plans, or as indicated by the Engineer and in accordance with these specifications.

11.12.02—Materials: The materials for this work shall conform to the requirements of Article M.16.13.

11.12.03—Construction Methods: The magnetic detector shall be installed in a 4-inch (102-millimeter) polyvinyl chloride conduit. A joint shall be made to the control cable in the concrete handhole. Joints shall be made in conformance with Article 11.13.03.

The single lane magnetic detector shall be placed in a roadway excavation made only large enough to permit the pavement box and conduit to be lowered into place. Reinforcing rods in concrete need only to be removed within 5 inches or 6 inches (125 millimeters or 150 millimeters) of the detector housing.

Remove the detector coil unit and other parts from the pavement box, replace the cover and install the conduit using pipe joint compound to prevent the entrance of moisture.

The pavement box and conduit assembly will be suspended in the excavation using 4 bolts and 2 inch x 4 inch (50 millimeter x 100 millimeter) wood pieces as temporary supports. The cover of the box should be 3 inches (75 millimeters) below the finished surface of the roadway. Plug up the unused conduit entrances with pipe plugs. Spread a handful of sand over the cover to prevent concrete from getting into the cracks. Pour concrete in the excavation up to the level of the top surface of the box. After the concrete has hardened, the cover shall be removed and the coil unit placed in the box with the "arrow" pointing toward the intersection.

After the coil connections have been made, a silicone compound shall be applied to the terminals. The conduit entrances shall be sealed with oakum or equivalent and fill the entire pavement box with melted petrolatum (vaseline) or equivalent.

The cover shall then be secured in place and the road resurfaced to its original level.

11.12.04—Method of Measurement: This work will be measured for payment by the number of magnetic vehicle detectors of the type specified, completed, operating and accepted.

11.12.05—Basis of Payment: This work will be paid for at the Contract unit price each for "Magnetic Vehicle Detector," of the type specified, which price shall include detector, detector-amplifier, all materials, labor, tools and work incidental thereto.

Pay Item Pay Unit
Magnetic Vehicle Detector (Type) ea. (ea.)

 

 

SECTION 11.13

CONTROL CABLE

11.13.01—Description: This item shall consist of furnishing and installing electrical cable and appurtenances of the type specified at the locations shown on the plans or as indicated by the Engineer, in accordance with these specifications.

11.13.02—Materials: The materials for this work shall conform to the requirements of Article M.16.14.

11.13.03—Construction Methods: All wiring shall conform to the appropriate requirements for the NEC and shall be insulated for 600 volts. Wire splicing will not be permitted in conduit or outside of junction boxes, hand holes, poles or pedestals, unless otherwise indicated on the plans.

All cables shall contain the required number of conductors as shown on the plans. The substitution of several cables to attain the required number of conductors will not be permitted. Cable to be installed in conduit shall be pulled with a minimum of dragging on the ground or pavement. This shall be accomplished by means of reels mounted on jacks or approved devices conveniently located for unreeling cable directly into the conduit. Powdered soapstone, talc, or other approved lubricants shall be used when inserting cable into the conduit. Cable shall be pulled through conduit by means of a cable or cables. Wiring within junction boxes and cabinets shall be neatly arranged.

Conductors entering the controller cabinet shall be neatly dressed and laced along the base and back of the cabinet to the terminal board mounted in the cabinet. When three or more conductors are attached to the same terminal in the controller cabinet, they shall not be twisted together, but shall be attached with a set-screw type lug of the correct size. When less than three conductors are attached to the same terminal, in the controller cabinet, a separate spade type connector shall be attached to each conductor. Spare conductors shall be tied together with their ends taped. All splices are to be of an approved type and made in such a manner that the connection will be moisture-proof. All aerial splices shall be accomplished as shown on the plans using a cable closure. At least 2 feet (600 millimeters) of slack shall be left for each conductor at each standard and at least 1 foot (300 millimeters) of slack at each pull box.

All splicing in junction boxes, hand holes, poles and pedestals can be accomplished by one of the following methods:

1. Splices can be made by soldering with the pouring or dipping method.

2. Non-insulated butt-type pressure connectors shall be seamless and be U.L. approved for aluminum or copper wire. The butt-type pressure connector shall be connected to the wire with an installing tool that is designed for butt-type pressure connectors. After crimping, all detector cable splices shall also be soldered. Each butt-type connector shall be insulated separately by applying layers of thermoplastic electrical insulating tape. The thermoplastic tape shall extend 1/2 inch (13 millimeters) beyond the conductor insulation and be lapped at 1/4-inch (6-millimeter) intervals. The entire completed splice shall have an application of layers of 30 mil high voltage rubber self-fusing tape well lapped over and equal to the original insulation. The splice shall then be covered with layers of thermoplastic electrical insulating tape not over 0.007 inch (200 microns) thick conforming to MIL-7798 and a coating of flexible insulating paint approved by the Engineer.

At least 1 foot (300 millimeters) of slack shall be left for each conductor at each splice. An approved type of water-tight splicing box may be used in lieu of the aforementioned, providing the box has sufficient number of terminals to accommodate the number of conductors to be spliced in the box.

When conductors and cables are pulled into conduits, all ends of conductors and cables shall be taped to exclude moisture, and shall be so kept until the splices are made or terminal appliances attached.

3. Cable closures shall be installed as shown on the plans or as directed by the Engineer. The cable closure shall be attached to the span or messenger with suspension brackets. After the cables have been installed, each opening shall be sealed with sealing tape. When using cable less than 0.6 inches (15 millimeters) in diameter, a cone-shaped collar shall be formed with sealing tape, to seal off the space between the cable and closure nipple. 2 turns of sealing tape will then be placed over the closure nipple and the cable. The cable shall be attached to the terminal blocks as shown on the typical installation details.

The terminals shall then be securely wrapped with electrical tape. Connectors shall not extend beyond the end of the terminal post. The terminals and connectors shall not be in contact with the closure cover at any point.

11.13.04—Method of Measurement: This work will be measured as follows:

1. The quantity of control cable to be paid for under these items shall be the actual number of linear feet (meters) measured along the center of the cable specified, installed, tested and accepted in place with the necessary connections.

2. Cable closures will be measured for payment by the number of cable closures of the type specified, completed and accepted in place.

11.13.05—Basis of Payment:

1. Control cable shall be paid for at the Contract unit price per linear foot (meter) for "(No.) Conductor #( ) (Type)" which price shall include installation, splicing, connecting, necessary fittings, equipment, labor, all materials and work incidental thereto.

2. Cable closure will be paid for at the Contract unit price for "Cable Closure" complete, in place, which price shall include all materials, sealing tape, terminal blocks and all equipment, tools, labor and work incidental thereto.

Pay Item Pay Unit
(No.) Conductor #( )(Type)  l.f. (m)
Cable Closure  ea. (ea.)

 

 

SECTION 11.14

MESSENGER AND SPAN WIRE

11.14.01—Description: Work under this item shall consist of furnishing and installing span wire or messenger, whichever is applicable, at the locations indicated on the plans or as directed by the Engineer in accordance with the following requirements.

11.14.02—Materials: The materials for this work shall conform to the requirements of Article M.16.15.

11.14.03—Construction Methods:

1. Span Wire used for the suspension of traffic signals shall be attached to the supporting poles at such a level as to make the lowest part of the signal head not less than 16 feet 0 inches (4.9 meters), nor more than 17 feet 0 inches (5.2 meters) above the pavement grade beneath the signal head.

A normal sag of not more than 5% of the total span shall be permitted. Wire secured to the pole bands shall be protected from sharp bends by a thimble clevis. Thimble eyebolts, nuts and washers shall be used instead of eyebolts. Ends of cable shall be fastened to the standing part by 6-inch (150-millimeter) clamps and shall be wrapped with galvanized wire. A wet porcelain strain insulator shall be used at locations where the messenger or span wire is attached between steel and wood poles. Traffic signal control cable shall be suspended from the span wire by means of 2-inch or 3-inch (50-millimeter or 75-millimeter) rings as required by the number and size of the cables installed, spaced not more than 18 inches (450 millimeters) apart. The traffic signal cable may be suspended from the messenger with the use of 2-inch (50-millimeter) rings, or by a spiral wrapping of 3/32-inch (2.4-millimeter) galvanized steel wire, applied by a machine in a uniform spiral with a lay or pitch of no more than 18 inches (450 millimeters). All overhead conductors shall have an 8-inch (200-millimeter) drip loop at the junction with a pole or signal head. At all electrical cable turns and drops, plastic tie wraps shall be used to insure against any change in physical relationship between the electrical cable and the span wire.

Service wires between a power supply and controller cabinet on a pole shall be connected to the pole by an approved cable grip and enter the poles by means of a wire inlet with a bushing. An 8-inch (200-millimeter) drip loop shall be formed in the wires at the entrance of the wire inlet. The installation of span wire shall be as shown on the plans.

2. Messenger for carrying signal cable between poles shall be installed as shown on the plans.

The suspension of cable shall conform to either the 2-inch or 3-inch (50-millimeter or 75-millimeter) ring or spiral wrapping methods, which are covered elsewhere in this specification.

11.14.04—Method of Measurement: Work under these items will be measured for payment by the actual number of linear feet (meters) of steel wire cable, of the type specified, installed and accepted in place with necessary appurtenances.

11.14.05—Basis of Payment: This work will be paid for at the Contract unit price per linear foot (meter) for "Messenger" or "Span Wire," whichever applies, which price shall include messenger or span wire, wet porcelain insulators, pole bands, thimble eyebolts, nuts, washers, cable rings, all materials, tools, equipment, labor and work incidental thereto.

Pay Item Pay Unit
Messenger Wire l.f. (m)
Span Wire l.f. (m)

 

 

SECTION 11.16

ILLUMINATED SIGNS

11.16.01—Description: This item shall consist of furnishing and installing an illuminated sign, of the type specified, at the location shown on the plans or as directed by the Engineer, and in conformity with these specifications.

11.16.02—Materials: The materials for this work shall conform to Article M.16.18.

11.16.03—Construction Methods: Erection of the sign shall be accomplished in a manner so as not to cause twisting, bending, deforming, or scratching of the sign or sign face. They shall be level, correctly aligned as indicated on the plans and shall be properly fastened to the structure or supports with the necessary hardware as indicated on the plans. Any sign panel damaged shall be repaired at the Contractor's expense.

11.16.04—Method of Measurement: This work will be measured for payment by the number of illuminated signs of the type and size specified, completed in place, accepted and operating.

11.16.05—Basis of Payment: This work shall be paid for at the Contract unit price each for "Illuminated Sign" complete in place, which price shall include mounting brackets, hardware, fittings, snap switch, all materials, equipment, paint, tools, labor, and work incidental thereto. Cable to the sign shall be paid under Article 11.13.

Pay Item Pay Unit
Overhead Illuminated "Stop Ahead" Sign . ea. (ea.)
Internally Illuminated Sign ea (ea.)

 

SECTION 11.17

ALTERNATE FLASHING SIGNALS FOR WARNING SIGNS

11.17.01—Description: Work under this item shall consist of furnishing and installing alternate flashing signals for warning signs at the location shown on the plans or as directed by the Engineer, and in conformance with these specifications.

11.17.02—Materials: The materials for the work shall conform to the following:

Article M.15.09 for Rigid Metal Conduit

Article M.16.06 for Traffic Signals

Article M.16.09 for Painting

Article M.16.10 for Cabinet

Article M.16.14 for Control Cable

11.17.03—Construction Methods: All internal wiring shall be #14 AWG stranded drawn copper. All wiring shall be neat and firm. All flasher inputs and outputs shall be wired to a terminal block. The signal indications and flasher cabinet shall be mounted on the sign supports in accordance with the dimensions and details shown on the plans.

11.17.04—Method of Measurement: This work will be measured for payment by the number of alternate flashing signals for warning signs completed and accepted in place. The conduit and cable installed on the line side of the cabinet will not be included for payment under this item.

11.17.05—Basis of Payment: This work will be paid for at the Contract unit price each for "Alternate Flashing Signals for Warning Signs," which price shall include cable, signals, conduit, fittings, hardware, flasher cabinet complete with all necessary equipment, ground rod, armored ground cable, paint and painting, and all materials, equipment, tools and labor incidental thereto.

Pay Item Pay Unit
Alternate Flashing Signals for Warning Signs  ea. (ea.)

 

 

SECTION 11.18

REMOVAL AND/OR RELOCATION OF TRAFFIC

SIGNAL EQUIPMENT

11.18.01—Description: Work under this item shall consist of removal and, where required, relocation of existing traffic signal equipment at the location shown on the plans or as directed by the Engineer and in conformity with these specifications.

11.18.02—Materials: All materials required for this work shall conform to the requirements of these specifications or the special provisions for the material in question; or if not so specified, they shall be of a quality satisfactory to the Engineer.

11.18.03—Construction Methods: Existing traffic signal equipment shall be carefully removed together with all fittings and attachments in such a manner as to safeguard all parts from damage or loss. The Contractor shall replace, at his own expense, all equipment which becomes damaged due to his operations.

Removal of existing signal and control equipment shall be coordinated with the installation of new signal and control equipment so as to maintain uninterrupted traffic signal operation at each intersection. The Contractor shall furnish and install signals, supports or other equipment necessary to provide for uninterrupted signal operation as directed by the Engineer.

Traffic signal equipment, fittings, wires, cable, conduit and all other materials shall be reinstalled and extended where necessary to maintain satisfactory operations.

Where attachment points for span wire or other signal equipment are on a utility pole, the Contractor shall secure from the owning utility company the permission to remove or install such attachments in accordance with their requirements.

Equipment shall be removed in such a manner as to cause no hazard to pedestrians, traffic or property. If necessary, flagmen shall be used to halt traffic briefly while work is in progress. When plans call for relocation of existing equipment, the work shall be accomplished with a minimum of down time.

All removed equipment, including wire and cable that is not reused at the location, is to be returned to the State depot as designated by the Engineer. Material, such as concrete foundations, etc. shall be removed to a suitable dump. When poles, foundations, etc. are removed, the hole shall be backfilled with clean fill material, which shall be compacted and the ground restored to a grade and condition compatible with the surrounding area. Topsoil to a minimum depth of 4 inches (100 millimeters) shall be applied and seeded with perennial grass seed. If in a sidewalk area, the surfacing shall be with material compatible with the rest of the sidewalk. Where pressure sensitive vehicle detectors are to be removed, the entire detector frame shall be removed, the hole shall be backfilled and the pavement restored, in accordance with the appropriate sections of the Standard Specifications.

11.18.04—Method of Measurement: This work shall be at the Contract lump sum price for the completion of all work specified.

11.18.05—Basis of Payment: This work will be paid for at the Contract lump sum price for the "Removal and/or Relocation of Traffic Signal Equipment" which price shall include all removals, all relocations, all material, equipment and labor incidental to completion of this item.

Pay Item Pay Unit

Removal and/or Relocation of

Traffic Signal Equipment

l.s. (l.s.)

 

 

SECTION 11.30

HIGH MOUNTED INTERNALLY ILLUMINATED

FLASHING ARROW

11.30.01—Description: This item shall include furnishing and maintaining a high mounted internally illuminated flashing arrow sign, either on a trailer assembly or truck, as shown on the traffic control plans or as ordered by the Engineer and in accordance with these specifications.

11.30.02—Materials: The flashing arrow shall conform to the requirements of Part VI of the MUTCD, Advance Warning Flashing Sequencing Arrow Panels, Type C. The panel shall have the capability of both sequential and flashing operations. The bottom of the panel shall not be less than 7 feet (2.1 meters) above the pavement. Lamp voltage shall be dimmed by 50% for nighttime use automatically.

11.30.03—Construction Methods: The Contractor shall furnish, place, operate, maintain and relocate the sign as required. When the need no longer exists for a sign, the Contractor shall dispose of it. Any signs that are missing, damaged, defaced, or improperly functioning so that they are not effective, as determined by the Engineer and in accordance with the ATSSA guidelines contained in "Quality Standards for Work Zone Traffic Control Devices," shall be replaced by the Contractor at no cost to the State.

11.30.04—Method of Measurement: This work will be measured for payment by the number of calendar days that the sign is in place and in operation. When a sign is in operation for less than a day, such a period of time shall be considered to be a full day regardless of actual time in operation.

11.30.05—Basis of Payment: This work will be paid for at the Contract unit price per day for "High Mounted Internally Illuminated Flashing Arrow," which price shall include all costs for furnishing, maintaining and disposing of a sign and all materials, labor, tools and equipment incidental thereto.

Pay Item Pay Unit
High Mounted Internally
Illuminated Flashing Arrow day  (day)

SECTION 11.31

CHANGEABLE MESSAGE SIGN

REMOTE CONTROLLED CHANGEABLE

MESSAGE SIGN

11.31.01—Description: Work under this item shall include furnishing and maintaining a trailer-mounted, Changeable Message Sign or Remote Controlled Changeable Message Sign, whichever is applicable, at the locations indicated on the plans or as directed by the Engineer.

11.31.02—Materials: The internally illuminated variable message sign shall consist of a magnetically operated matrix, LED, fiber optic, or lamp matrix message board; a diesel engine driven generator power supply; hardware for connection to a 110 volt power source; and a computer operated interface, all mounted on a towable, heavy duty trailer.

The sign shall have a 3-line message panel with 8 characters per line and a minimum horizontal dimension of 115 inches (2920 millimeters). The letter height shall not be less than 18 inches (460 millimeters). The sign shall rotate a complete 360 degrees atop the lift mechanism.

In the raised position, the bottom of the sign shall be at least 7 feet (2.1 meters) above the pavement surface. The sign shall be clearly legible for a distance of 900 feet (274 meters).

The sign shall be controlled by an on-board computer. The sign shall automatically change to a pre-selected default message upon failure. That default message shall remain on display until the problem is corrected.

The Remote Controlled Changeable Message Sign unit shall be equipped with a security system to prevent unauthorized access. The security system shall allow access only through use of a code or password unique to that sign. If the proper code or password is not entered within 60 seconds of initial telephone contact, the call will be terminated. Remote control for the Remote Controlled Changeable Message Sign shall be by cellular telephone and touch tone modem decoder.

Each element in a magnetically operated matrix message board shall consist of a moveable flap operated by an electromagnet, which shall be positioned so that by changing polarity the flap is reversed. When closed, the black side shall be exposed. When opened, the colored section shall be exposed.

The lamp matrix, LED or fiber optic sign, shall be equipped with a top-mounted photocell for automatic sign dimming during nighttime use.

The sign shall be capable of storing 100 pre-programmed messages and be able to display any one of those messages upon call via the trailer-mounted terminal for both the Changeable Message Sign and the Remote Controlled Changeable Message Sign or through the cellular telephone hookup for the Remote Controlled Changeable Message Sign.

11.31.03—Construction Methods: The Contractor shall furnish, place, operate, maintain and relocate the sign as required. When the sign is no longer required, it shall be removed and become the property of the Contractor. The cellular telephone required for the Remote Controlled Changeable Message Sign shall be provided to the Engineer for his use, and subsequently returned to the Contractor. When the sign is not in use, it shall either be turned off or turned from view.

Any signs that are missing, damaged, defaced or improperly functioning so that they are not effective, as determined by the Engineer and in accordance with the ATSSA guidelines contained in "Quality Standards for Work Zone Traffic Control Devices," shall be replaced by the Contractor at no cost to the State.

11.31.04—Method of Measurement: This work will be measured for payment for each changeable message sign or remote controlled changeable message sign, whichever applies, furnished and installed, for the number of calendar days that the sign is in place and in operation, measured to the nearest day. When a sign is in operation for less than a day, such a period of time shall be considered to be a full day regardless of actual time in operation.

11.31.05—Basis of Payment: This work will be paid for at the Contract unit price per day for each "Changeable Message Sign" or "Remote Controlled Changeable Message Sign," which price shall include placing, maintaining, relocating and removing the sign and its appurtenances and all material, labor, tools and equipment incidental thereto. Additionally, for the "Remote Controlled Changeable Message Sign," the cellular telephone service and telephone charges shall be included.

 

Pay Item Pay Unit
Changeable Message Sign day (day)
Remote Controlled Changeable Message Sign day (day)

 

 

 

 





Content Last Modified on 6/25/2008 4:08:33 PM