100 general provisions

F. System Operation Meeting and Final System Summary Report. After the draft system summary report has been submitted, the Engineer will schedule a meeting that includes the systems engineer or technician, the Contractor, the Engineer, and representative(s) from the maintaining agency(s) to discuss the operation of the traffic responsive closed loop signal system. This meeting shall occur within 4 weeks after the draft system summary report has been submitted to the Engineer and maintaining agency(s).

The purpose of this meeting is to discuss the operation of the traffic responsive closed loop signal system and to receive comments and recommendations from the Engineer and/or the maintaining agency(s) regarding potential modifications to the operation of the system. The systems engineer or technician shall answer questions regarding the system summary report as well as the operation of the closed loop system.

The systems engineer or technician shall make final adjustments to the system as directed by the Engineer to address any concerns discussed at this meeting. The systems engineer or technician shall perform the final travel time study before submitting the final report. The systems engineer or technician shall submit one copy of a final system summary report to the Engineer and one additional copy for each maintaining agency for review and approval. The final report shall include any revisions to the draft report that are required as a result of the system operation meeting.

633.18 Uninterruptible Power Supply (UPS). Furnish and install a Battery Backup UPS system to provide uninterruptible, reliable, emergency power to a traffic signal intersection in the event of a power failure or interruption. The transfer from utility power to battery power shall not interfere with the normal operations of the traffic controller, conflict monitor or any other peripheral devices within the traffic control system. The system shall be self-contained including all UPS hardware, the required number of batteries and its own separate ventilated enclosure.

633.19 Method of Measurement. The Department will measure Controller Unit, Type ___, with Cabinet, Type ___ by the number of each complete unit, and will include controller unit with software, all required auxiliary equipment, loop detector units, and a prewired cabinet, with all items completely wired and tested. Ground mounted cabinets will include anchor bolts and conduit ells for installation in the foundation. Pole mounted cabinets will include pole mounting hardware.

The Department will measure Controller Unit, Type ___ by the number of each controller timing unit with software, and will include any signal timing programming or installation. The Department will measure Controller Unit, Type ___, Furnish Only by the number of each controller timing unit with software, and will exclude any signal timing programming or installation.

The Department will measure Cabinet, Type ___ by the number of each complete prewired cabinet installed, and will include all required auxiliary equipment and loop detector units (excluding controller unit), with all items completely wired and tested. Ground mounted cabinets will include anchor bolts and conduit ells for installation in the foundation. Pole mounted cabinets will include pole mounting hardware. The Department will measure Cabinet, Type ___, Furnish Only by the number of each complete prewired cabinet, and will include pole mounting hardware and anchor bolts, but will exclude installation, controller unit, and detector units.

The Department will measure Cabinet Riser by the number of each unit, and will include materials, mounting hardware, and installation.

The Department will measure Cabinet Foundation and Controller Work Pad by the number of each complete unit, in place, complete and accepted, and will include excavation, concrete, backfilling, and disposal of surplus excavation. Cabinet foundation will include preformed joint filler between the foundation and adjacent paved areas. One complete Controller Work Pad unit may encompass several sides of a controller cabinet installation.

The Department will measure Flasher Controller by the number of each complete flasher assembly with cabinet installed and tested.

The Department will measure Controller, Master, Traffic Responsive by the number of each unit, and will include installation, signal system software, programming, and any increase in cabinet size to house the master controller in the local intersection cabinet. The Department will measure Controller, Master, Traffic Responsive, Furnish Only by the number of each unit, and will include software, but exclude any programming or installation.

The Department will measure Remote Monitoring Station by the number of each location shown on the plans, and will include all equipment, testing, and software.

The Department will measure Telephone Service by the number of each location shown on the plans for furnishing telephone service to an intersection controller, and will include the modem, conduit, trenching, and wiring.

The Department will measure Training on a lump sum basis, and will include providing the instruction materials, instructor travel expenses, and test or media equipment for presenting the training material.

The Department will measure System Analysis on a lump sum basis, and will include providing all materials, labor, software, printing reports, and incidentals to analyze all traffic responsive sub-systems included in the project.

The Department will measure Uninterruptible Power Supply by the number of each and will include all equipment, testing and certifications.

633.20 Basis of Payment. If a project contains individual sub-systems that are connected to the remote monitoring station, the cost for performing work, as specified in 633.17 is incidental to the bid item price for System Analysis.

The costs to obtain and maintain telephone service by the supply agency are included under Telephone Service.

The Department will pay for accepted quantities at the contract unit prices as follows:

Item Unit Description

633 Each Controller Unit, Type ___,

with Cabinet, Type ___

633 Each Controller Unit, Type ___

633 Each Controller Unit, Type ___, Furnish Only

633 Each Cabinet, Type ___

633 Each Cabinet, Type ___, Furnish Only

633 Each Cabinet Riser

633 Each Cabinet Foundation

633 Each Controller Work Pad

633 Each Flasher Controller

633 Each Controller, Master, Traffic Responsive

633 Each Controller, Master, Traffic
Responsive, Furnish Only

633 Each Remote Monitoring Station

633 Each Telephone Service

633 Lump Training

633 Lump System Analysis

633 Each Uninterruptible Power Supply

ITEM 638 WATER MAINS AND SERVICE BRANCHES

638.01 Description

638.02 Materials

638.03 Notification

638.04 Excavation

638.05 Pipe Bedding

638.06 Pipe Laying

638.07 Pipe Joints

638.08 Backfilling

638.09 Hydrostatic Tests

638.10 Disinfection of Completed Water Work

638.11 Steel Pipe Encasement

638.12 Polyethylene Encasement

638.13 Valves and Equipment

638.14 Fire Hydrant

638.15 Fire Hydrant Adjusted

638.16 Service Branches

638.17 Meter and Chamber Removed and Reset

638.18 Valve Box and Service Box Adjusted to Grade

638.19 Method of Measurement

638.20 Basis of Payment
638.01 Description. This work consists of constructing water mains and service branches, including fire hydrants, water meters, corporation stops, service boxes, service stops, valves, fittings, and valve boxes, and includes:

A. Excavation for items and preparation of the foundations, necessary for placing water mains and service branches, including fire hydrants, water meters, corporation stops, service boxes, service stops, valves, fittings, and valve boxes.

B. Furnishing and placing bedding and backfill.

C. Constructing and subsequently removing all necessary cofferdams, bracing, cribs and sheeting.

D. Pumping and dewatering.

E. Providing all joints as shown on the plans.

F. Furnishing and installing all necessary bends and branches.

G. Furnishing and installing all necessary tracer tape.

H. Joining to existing and proposed appurtenances as required in the project plans.

I. Performing all necessary test (leakage test, disinfections, hydrostatic).

J. Restoration of disturbed underground facilities.

K. Constructing all required blocking and wedging and/or thrust blocking.

L. Furnishing and installing all necessary restraining of joints and fittings.

M. Cutting and plugging as required existing water mains to be abandoned.

Use all suitable material in the work. Alternatively legally use, recycle or dispose of all excavated materials according to 105.16 and 105.17.

638.02 Materials. Furnish materials conforming to:

Pipe, joints, and fittings.

Ductile iron pipe, joints, and fittings 748.01

Polyvinyl chloride (PVC) pipe,

joints, and fittings 748.02

Polyethylene (PE) service

branches and fittings 748.03

Copper service branches and fittings 748.05

Steel pipe encasement 748.06

Polyethylene encasement 748.07

Valves and equipment.

Gate valve and valve box 748.08

Inserting valve and valve box 748.09

Cutting-in sleeve, valve and valve box 748.10

Tapping sleeve, valve and valve box 748.11

Tapping saddle and corporation stop 748.12

Service stop and service box 748.13

Meter, setting, stop and chamber 748.14

Fire hydrant 748.15
Miscellaneous.

Granular Material 605.02

Disinfectant AWWA

Pipe bedding 603.02

Concrete, Class C 499 and 511

Soil and granular embankment 203.02

Structural backfill, Types 1, 2, and 3 703.11

Mortar 602

The Engineer will allow Type 3 structural backfill, conforming to 703.11, to be used as bedding below the pipe only when pumping operations do not control severe ground water problems. Place at least 12 inches (300 mm) of Type 1 structural backfill on top of the Type 3 structural backfill to prevent piping.

The metric equivalent pipe size may vary with material type for the same English size pipe.

638.03 Notification. Notify the Engineer and maintaining agency of the following:

A. The dates scheduled for testing and for disinfections of mains and branches.

B. Any clearances less than 1 foot (0.3 m) between new mains and existing pipes, sewers, and structures.

638.04 Excavation. Excavate according to Item 603 with the following additions:

A. Excavate the trench a suitable distance in advance of pipe laying to ensure proper clearance between the waterline and any utility crossing or underground structure. Suitably brace and support utilities and structures.

B. Excavate the trench walls vertically up to the top of the pipe. Ensure that the clearance on either side of a pipe is a minimum of 6 inches (150 mm) and a maximum of 12 inches (300 mm). In paved areas, neatly line cut the pavement at the surface a distance of at least 12 inches (300 mm) beyond the trench side and remove paving material.

C. Furnish cover over pipes of 5 feet (1.5 m) unless other wise shown on the plans.

D. Pile excavated material in a manner that will not endanger the work or obstruct sidewalks and driveways. Keep gutters clear or make other satisfactory provisions for drainage. Do not obstruct natural water-courses.

E. Furnish holes for pipe bells at each joint, but make them no longer than necessary for joint assembly and assurance that the pipe barrel will be flat on the trench bottom.

F. Furnish, place, and maintain such sheeting and bracing as may be required. Immediately backfill and compact voids appearing outside of sheeting. Notify the maintaining agency of sheeting and bracing left in place. Do not remove sheeting and bracing until sufficient backfill has been placed to provide ample support to the sides of the excavation. When sheeting is left in place, cut it off at least 2 feet (0.6 m) below the proposed finished surface or subgrade in paved areas. The Department will pay for sheeting and bracing it orders to be left in place as a separate item of the work.

638.05 Pipe Bedding. Where specified, provide structural backfill for bedding according to Item 603 except the bedding is 4 inches (100 mm) thick.

638.06 Pipe Laying.

A. Inspection. Inspect water mains and auxiliary equipment upon delivery in the field to ensure proper working order before installation.

B. Trench Dewatering. Where water is encountered in the trench, remove it during pipe-laying operations and maintain the trench water free until the ends of the pipe are sealed and provisions are made to prevent floating of the pipe. Do not allow trench water or other deleterious materials to enter the pipe at any time.

C. Pipe Clearance. Lay pipe at least 12 inches (300 mm) from any structure or underground utility, and maintain a minimum 10-foot (3 m) horizontal separation from sanitary sewers.

D. Existing Systems. Do not operate any valve or other control on the existing system. The maintaining agency will operate all valves, hydrants, air valves, and service stops.

E. Pipe Handling. Handle pipe in a manner that will prevent damage to the pipe, pipe lining, or coating. Load, unload, and place pipe and fittings using hoists and slings in a manner that will avoid shock or damage. Do not drop, skid, or roll pipe or fittings against other pipe.

F. Pipe Cutting. Whenever it becomes necessary to cut a length of pipe, make the pipe ends square with the longitudinal axis of the pipe and otherwise smooth so that good connections can be made. Cut pipe using cutters recommended by the manufacturer. Do not cut ductile iron pipe with an oxyacetylene torch. File or grind field-cut pipe lengths to obtain a chamfer on the outside of the pipe, according to the manufacturer’s recommendations. Remove rough or sharp edges from the cut end.

G. Pipe Laying. Ensure that pipe and fittings are clean when laid. Take precautions to prevent floating. Place the pipe on the trench bottom or bedding. After the pipe has been aligned and jointed, and thrust blocking has been placed, secure the pipe in place with approved backfill material. At times when pipe laying is not in progress, close the open ends of the pipe with a watertight plug.

H. Pipe Laying on Curves. If the pipe is shown curved on the plans, construct the curves by special fittings or by deflecting the joints according to the manufacturer’s recommendations. Do not make joint deflections at valves.

When rubber-gasketed pipe is laid on a curve, joint the pipe in a straight alignment and then deflect it to the curved alignment. Make trenches wider on curves for this purpose.

I. Pipe Laying Where Earth Grading is Necessary. Where a pipe is to be placed within an embankment or the top of the pipe is above the existing ground, construct the embankment to at least 6 inches (150 mm) above the top of the pipe before trenching for the pipe. Excavate the trench to the minimum width necessary for the proper placing and backfilling of the pipe.

J. Tracer Tape. Install tracer tape over copper and non-metallic water lines, including service lines. Place the tracer tape approximately 1 foot (0.3 m) above the top of the line and extend the tape for the line’s full length. Use tracer tape that is a detectable type and is marked “WATER.”

K. Blocking and Wedging. Lay fire hydrants, valves, and fittings on hardwood blocks and hold them in position by hardwood wedges. Bed blocks firmly in the bottom of the trench with uniform bearing and with the long dimension of the block perpendicular to the pipe barrel. Ensure that the blocks are level across the trench and that the proper number of blocks are placed one upon the other to bring the fittings to the required grade for jointing.

L. Thrust Blocking. Furnish plugs, caps, tees, hydrants, and elbows or bends having a deflection of 11 1/4 degrees or greater with concrete thrust blocking, unless suitably restrained joints are provided. Construct the thrust blocking by placing concrete Class C between firm original undisturbed earth and the fitting to be anchored. Place and shape the thrust blocking in a manner satisfactory to the Engineer with the thrust force contained by the blocking. Place the hardwood blocks between the plugs, caps, and hydrants, and the thrust blocking. Place the thrust blocking so that it allows for pipe and joint accessibility or repair.

M. Restrained Joints and Fittings. Where conditions at an elbow, tee, or bulkhead are not conducive to the use of thrust blocking, restrain push-on or mechanical joints and fittings by bent or straight tie-rods, straps, clamps, or other devices, with required hardware. Protect the devices against corrosion by the application of an asphalt coating. Restrain mechanical joints by a wedge action type joint restraint with twist-off nuts. If polyethylene encasement is specified, ensure that the encasement covers the entire assembly. The Contractor may use restraining devices instead of thrust blocking when approved by the Engineer.

638.07 Pipe Joints. Furnish ductile iron pipe and cast iron or ductile iron fittings with push-on joints, mechanical joints, boltless-restrained joints, or ball-and-socket joints. Furnish joints with all accessories and install them according to the manufacturer’s recommendations. During any construction where the outside temperature is below 40 F (4 C), keep rubber gaskets and lubricants in a heated area to at least 40 F (4 C) until used. Maintain gaskets in a flexible condition until placed in the bell or on the spigot of the pipe.

638.08 Backfilling. Complete backfill from the pipe grade to the finished grade, or to the subgrade surface in paved areas. Furnish and compact backfill material for water mains and appurtenances under pavements in the same manner as for 603 non-plastic Type B conduits. Furnish and compact backfill material for water mains and appurtenances not under pavements in the same manner as for 603 non-plastic Type C conduits.

If hydrostatic testing is performed before the backfilling operation is completed, complete the portion of the backfill from pipe grade to the centerline of the pipe, fittings, or appurtenances and place sufficient backfill material over the pipe barrel between joints to prevent movement.

Place sand cushions at least 12 inches (0.3 m) thick between the pipe and existing pipelines or other conduits when encountered during construction and as directed by the Engineer.

Immediately after completion of the backfilling, restore the site according to Item 603.10.

638.09 Hydrostatic Tests. Apply a hydrostatic test to the whole system or to all individual valved-off sections of the mains where work has been performed. Perform the hydrostatic tests according to of AWWA, except make the test pressure greater than 150 pounds per square inch (1000 kPa). Ensure that the quantity of water lost from the main does not exceed the number of gallons (liters) per hour as determined by in AWWA or by the following formula:


where:

L = allowable leakage, in gallons (L) per hour

N = number of joints in the length of pipe tested.

D = nominal diameter of the pipe, in inches (mm)

P = average test pressure during the leakage test, in pounds per square inch (kPa)
638.10 Disinfection of Completed Water Work. After passing the hydrostatic testing, disinfect the completed water work according to AWWA.

Make all necessary taps and furnish all equipment and labor required for the disinfections. Obtain the Engineer’s approval of the time and the section of line to be disinfected.

638.11 Steel Pipe Encasement. Furnish and install a steel casing of the diameter and wall thickness shown in the plans.

Make any necessary excavation to install the steel casing. Obtain the Engineer’s approval for the method of any boring or jacking operation. If placing the steel casing in an open cut trench, place it according to 638.05 and 638.08.

Join the casing pipe together with a full-circumference weld conforming to 513.21.

Ensure that the inside diameter of the casing allows the water main to be removed without disturbing the casing or roadbed. Ensure that the inside diameter of the casing is at least 2 inches (50 mm) greater than the largest outside diameter of the water main joints or couplings for carrier pipe that is less than 6 inches (150 mm). Ensure that the inside diameter is at least 4 inches (100 mm) greater than the largest outside diameter for carrier pipe 6 inches (150 mm) in diameter and over.

Install the main in the casing on hardwood blocking or stainless steel chocks designed to remain fixed in position. The Contractor may install polyvinyl chloride water main using casing insulators. Close both ends of the casing with mortared 4-inch (100 mm) bricks or a concrete bulkhead.

638.12 Polyethylene Encasement. Lay ductile iron pipe with a polyethylene encasement as shown on the plans. Install pipe and polyethylene encasement according to ANSI/AWWA. Any increased girth of wrapping over valves, tees, and any other irregular shaped items are included in this item without any additional payment.

638.13 Valves and Equipment. Upon delivery at the work site, open valves to prevent the collection of water in the valve. Clean the interiors of valves of all foreign matter, and inspect them in both the open and closed position before installation.

Set valves plumb and joint them to the pipe according to 638.07 and the ANSI/AWWA standards for the joint type used.

Install valve boxes on all buried valves. Center the valve box and set it in a vertical position directly over the valve nut in such a manner that the box does not transmit shock or stress to the valve. Set the base of the valve box first, and support it with a minimum backfill, hardwood blocks, or a styrofoam collar at least 2 inches (50 mm) in thickness. Do not allow the base to rest directly on the valve or main. Use valve boxes that are two or three piece boxes with covers. When necessary, furnish extension sections. Carefully tamp backfill around the valve box to a distance of 3 feet (1 m) on all sides or to the undisturbed face of the trench if closer. Set the valve box cover flush with the ground line or finished paved surface.

Installation methods for valves and equipment include the following.

A. Gate Valve and Valve Box. Install gate valves directly in new mains or by means of a cutting-in sleeve in existing mains where maintenance of a continuous supply of water is not mandatory. Where it is mandatory not to interrupt the water supply, the Contractor may provide a branch to an existing main with a gate valve installed by means of a tapping sleeve.