628SANITARY SEWER SYSTEMS

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6-99SECTION 628 – SANITARY SEWER SYSTEMS

628.01DESCRIPTION . This work shall consist of the construction or reconstruction of sanitary sewer

lines and appurtenances.

628.02MATERIALS . Materials shall meet the requirements of the following subsections:

Granular Backfill for Structures ................................ ................................ ................. 704.08 Sewer Brick ................................ ................................ ................................ ................ 705.01(b) Rubber Gaskets ................................ ................................ ................................ .......... 707.09 Acrylonitrile -Butadiene -Styrene (ABS) Plastic Pipe ................................ ................. 710.0 4 Polyvinyl Chloride (PVC) Plastic Pipe ................................ ................................ ......710.0 5 Ductile Iron Pipe, Cement Lined ................................ ................................ ............... 740.05 Concrete shall conform to the requirements of Section 541 for Concrete, Class B, unless otherwise specified. Sleeves shall conform to the requirements of Section 625 . 628.0 3 GENERAL REQUIREMENTS . Operation of existing sanitary sewer facilities shall not be interrupted without prior written approval of the Engineer. When existing underground utilities not scheduled fo r removal or abandonment are encountered in the excavation, they shall be adequately supported and protected from damage. Any damage to utilities shall be repaired promptly in accordance with Subsection 107.1 2 at no additional cost to the Agency. The Contractor shall be responsible for the unloading, storing, hauling, and distribution of all materials. All materials that are damaged, destroyed, or lost during and after unloading shall be replaced at the Contractor’s expense. All pipes , pipe fittings, and accessories shall be handled to avoid shock. Pipes having factory -applied joint material shall be stacked and blocked to prevent damage to the joint material. Material not needed for immediate use shall be safely stored at places provided by the Con tractor and approved by the Engineer. The Contractor’s attention is called to the fact that sewer pipe and fittings are comparatively brittle. Care shall be taken in handling and laying to avoid damaging the pipe and fittings. The locations of all pipes sh all be approved by the Engineer. When directed by the Engineer, the Contractor shall remove, replace, or rework all sewer piping and appurtenances that do not meet the requirements of this section. The Contract or shall perform all remedial measures at no a dditional cost to the Agency.

628 6-100 628.0 4 SUBMITTALS . Fabrication drawings shall be submitted in accordance with Subsection 105.06 for all sewer system components including sewer piping, PVC fittings including reducers and end caps, solid sleeve transition couplings, flexible rubber transition couplings, gaskets, urethane insulation, cleanouts including ring and cover, and all ancilla ry appurtenances. Manufacturers’ technical data sheets shall be submitted for each type of pipe and fitting to be used on the project, including dimensions, specifications of material, gasket material, class and pressure rating, coatings, and linings, joi nt restraints, and appurtenances.

628.05EXCAVATION . Where pipe is to be laid below the existing ground line, a trench shall be

excavated to the required depth and to a width sufficient to allow for joining of the pipe and compaction of the bedding and b ackfill material under and around the pipe. Where feasible, trench walls shall be vertical. The completed trench bottom shall be firm for its full length and width. If shown on the Plans or directed by the Engineer, poor foundation material encountered bel ow the normal grade of the pipe bed shall be removed and replaced with granular backfill for structures. Where ledge rock, rocky or gravelly soil, hardpan, or other unyielding foundation materials are encountered in the trench excavation at the normal grad e of the pipe bed, the trench shall be excavated to a width equal to the inside diameter of the pipe plus 36 inches, and to a depth of 12 inches below the pipe grade. This area shall be backfilled with granular backfill for structures. The length of trench to be opened at one time shall be kept within the limit set by the Engineer, unless otherwise permitted or directed by the Engineer. No tunneling will be permitted except by written approval of the Engineer. Permission to tunnel will be granted only in sh ort sections where, in the opinion of the Engineer, the pipe can be safely and properly installed and the backfill properly compacted. During construction, the Contractor shall conduct operations to prevent at all times the accumulation of water, ice, and snow in excavations or near excavated areas, and to prevent water from interfering with the progress or quality of the work. Under no conditions shall water be allowed to rise in open trenches after the pipe has been placed. Accumulated water, ice, and sno w shall be promptly removed and disposed of by pumping or other approved means. Disposal shall be carried out in a manner which will not create a hazard to public health; cause injury to public or private property, work completed or in progress, or public streets; or cause any interference in the use of streets and roads by the public. Pipes under construction shall not be used to drain excavations.

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6-101Where pipes are to be placed in an embankment, excavation for the pipe shall be made after the

embankment has been completed to the specified height above the designed grade for those pipes shown on the Plans. Sheeting and bracing required for trenches shall be removed to the elevation of the pipe, but no sheeting will be allowed to be pulled, removed, or dist urbed below the pipe.

628.06BEDDING FOR PIPE . The bed shall be prepared in accordance with Subsection 601.04 unless

otherwise specified. Concrete cradle bedding shall be installed on approved subgrades when shown on the Plans or directed by the Engineer.

628.07LAYING PIPE . No pipe shall be placed until the trench and the prepared bedding have been

approved by the Engineer. The laying shall begin at the outlet end and the lower segment of the pipe shall be in contact with the shaped bedding thro ughout its full length. Bell or grooved ends of rigid pipes and the circumferential laps of flexible pipe shall be placed facing upstream. The longitudinal laps or seams of flexible pipe shall be at the sides. All pipes and fittings shall be carefully exam ined for defects and no pipe or fittings shall be laid which are known to be defective. If any defective piece is discovered after laying, it shall be removed and replaced at the Contractor’s expense. All pipes and fittings shall be cleaned before they are laid and shall be kept clean until accepted in the completed work. The pipe shall be laid to conform to the lines and grades shown on the Plans or as directed by the Engineer. Each pipe shall be so laid as to form a close joint with the next adjoining pip e and to bring the inverts continuously to the required grade. Each length of pipe shall be shoved home against the pipe previously laid and held securely in position. Joints shall not be pulled or cramped unless permitted by the Engineer. Before any joint is made, the pipe shall be checked to ensure that a closed joint with the next adjoining pipe has been maintained and that the inverts are matched and conform to the required grade. The pipe shall not be driven down to grade by striking it. The Contractor shall take all necessary precautions to prevent flotation of the pipe in the trench.

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6-102When pipe laying is not in progress, the open ends of the pipe shall be closed with temporary watertight

plugs. If water is in the trench when work is resumed, the pl ug shall not be removed until all danger of water entering the pipe is eliminated. The sewers and manholes shall be made as nearly watertight as practicable and leakage measurements shall be made wherever possible. For sewer force mains, concrete reaction blocking shall be provided as detailed at all bends deflecting 22.5° or more. At the Contractor’s option, retainer glands may be used at bends instead of concrete blocking. Retainer glands shall also be provided at all joints within three pipe lengths on each side of the bends.

628.08JOINING PIPE . Sewer pipe shall be joined in accordance with the detailed instructions of the

manufacturer. Sewer pipes with pre -molded gaskets shall be driven completely home and the gasket checked for proper positioning. Whe re poured joints are used, the pipe shall be properly positioned and the joint completely filled with joint sealer in accordance with the accepted practice for that type of sewer joint. The sealer shall be allowed to cool completely before the runner is re moved. Where recommended by the manufacturer, the Contractor shall furnish coupling pullers for joining the pipe. Gasket feeler gauges shall be available for use by the pipe layer and the Engineer for checking the position of the rubber gaskets in the comp leted joint, if so directed by the Engineer. Any fittings showing a crack, and any fitting or pipe that has received a severe blow which may have caused a fracture, even though no fracture can be seen, shall be marked as rejected and removed at once from the work. Sewer pipe shall be cut by means of a handsaw, metal -inserted abrasive wheels, or by pipe cutters with blades, not rollers, doing the cutting. All cut ends shall be examined for possible cracks caused by cutting.

628.09TESTING OF SYSTEM . The Contractor shall provide all necessary equipment and

instrumentation required for proper completion of the flushing and testing. Quality of water, testing procedures, and method of disposal of water shall be approved by the Engineer. Prior to testing, t he system shall be flushed with water to remove construction debris. All tests shall be performed in the presence of the Engineer. Preliminary tests made by the Contractor without being observed by the Engineer will not be accepted. The Engineer shall be n otified at least eight hours before any work is to be inspected or tested.

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6-103All defects in the system shall be corrected and retested until acceptable to the Engineer. Repairs shall be

made to achieve the standard of quality specified for the entire syst em. Sections of the system may be tested separately, but any defect that may develop in a section previously tested and accepted shall be promptly corrected and retested. Test data shall be recorded on a form acceptable to the Engineer. A copy of all test data shall be submitted to the Engineer at the completion of testing. All piping shall be tested in accordance with the following test methods, in addition to any test required by state and local codes or building authorities:

test for testing sewers. The maximum sewer length to be tested at one time shall be that length between any two successive manholes. Pipe trenches sha ll be backfilled prior to performing the test. All service laterals, stubs, and fittings shall be plugged or capped and adequately braced to withstand thrust forces. The depth of groundwater above the pipe section to be tested shall be determined. Portio ns of sewer lines in conflict with water mains shall be tested as ordered by the Engineer.

procedures:

precautions shall be taken to prevent blowouts and possible injury.

be connected to the air control equipment, which shall include valves and pressure

gauges. These shall allow air to enter the sewer test line, monitor air pressure in the

sewer, shut off air, and provide pressure reduction and 0 psi to 10 psi relief. The

monitoring pressure gauge shall have a range of 0 psi to 14.5 psi with divisions of

0.10 psi, and an accuracy of 0.05 psi.

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section filled slowly until a constant pressure of 3.5 psi is maintained.

temperature to stabilize. A check for leaks shall be made and if any are found, the

pressure shall be released and the fitting replaced or repaired.

supply disconnected.

measured and recorded.

be increased by 0.6 psi for every 1 foot the groundwater is above the invert of the

pipe.

75 seconds per inch of diameter of the main sewer being tested.

time will be considered to have failed the pressure test and shall be repaired and

retested.

while maintaining a low pressure on the entire sewer being tested. The exfiltration test

procedure shall be as follows:

The water supply connection shall be made at this point, but never directly from a

public water supply system or hydrant.

of the stand pipe shall be as directed, but in all cases it shall be 24 inches higher

than any point in the sewer or 24 inches higher than the highest known groundwater

table, whichever is higher, and shall be not higher than 25 feet above the lowest

point in the section being tested.

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shall be filled to the elevation designated in the stand pipe. A manhole may be used

as a stand pipe. The Engineer may require the manholes to be tested independently

in accordance with procedures specified in this subsection.

air to escape and absorption to take place.

a 15-minute period shall be measured. The minimum head shall be maintained

throughout the test and the Contractor shall add any volume of water required and

include that volume in the leakage measurements. The test shall be repeated as

directed.

of pipe diameter per mile of sewer per 24-hour day.

to be tested, the Engineer may allow the Contractor to perform an infiltration test. The

infiltration test procedure shall be as follows:

is used, it shall be installed to maintain a watertight seal between the weir and the

interior surface of the pipe. The measuring device shall meet the approval of the

Engineer.

flow.

per 24-hour day.

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leakage test described below.

Prior to testing, all anchors and braces shall be installed. All concrete thrust blocks and

restraints shall be in place and cured for at least 7 days. All buried pipes shall be backfilled.

Suitable test plugs shall be installed and air release valves shall be installed at the high

points.

rate not to exceed the venting capacity of the air release valves.

adjusted to the lowest point of the section being tested.

required for the Engineer to complete inspection. However, the manufacturer’s

suggested time duration at the test pressure shall not be exceeded.

performed.

pressure and adjusted to the lowest point of the section. This pressure shall be

maintained within a maximum variation of 5% for the test duration of two hours

minimum. Testing shall be conducted in accordance with ANSI/AWWA C600.

the supply side of the pump, and the leakage recorded as gallons per hour.

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threaded, or welded joints; or buried piping in conflict with potable water

lines.

the rate determined by the following formula:

𝐿 = 0.00102 × 𝑁 × 𝐷 × √𝑃

where:

L = Maximum allowable leakage (gallons/hour)

N = Number of gasketed joints in the line under test

D = Nominal internal diameter of the pipe (inches)

P = The average test pressure on the line being tested (psi gauge)

test.

the sewer, and the line passed, the Engineer may waive the requirement for an independent

manhole test at their discretion. In any case, there shall be no visible leakage into the base

or walls of a completed manhole.

All pipes and other openings into the manhole shall be suitably plugged and the plugs

braced to prevent blowout.

The manhole shall then be filled with water to the top of the cone section. With the approval

of the Engineer, a period of time may be permitted to allow for absorption. At the end of

this period, the manhole shall be refilled to the top of the cone, if necessary, and the

measuring time of at least four hours begun. At the end of the test period, the manhole shall

be refilled to the top of the cone, measuring the volume of water added. This amount shall

be recorded as gallons per vertical foot of depth per 24-hour day.

Allowable leakage for each manhole shall not exceed 1 gallon per foot per day. If leakage

exceeds the allowable rate, repairs shall be made as approved by the Engineer and the

manhole retested.

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If the Contractor elects to backfill prior to testing, the testing shall be at the Contractor’s

own risk, and it shall be incumbent upon the Contractor to determine the reason for any

failure of the test. No adjustment in the leakage allowance will be made for unknown causes

such as leaking plugs, or absorption. It will be assumed that all loss of water during the test

is a result of leaks through the joints or through the concrete. Furthermore, the Contractor

shall take any steps necessary to assure the Engineer that the groundwater table is below

the bottom of the manhole throughout the test.

If the groundwater table is above the highest joint in the manhole, and if there is no leakage

into the manhole as determined by the Engineer, this test can be used to evaluate the water-

tightness of the manhole. However, if the Engineer is not satisfied, the Contractor shall

lower the groundwater table and carry out the test as described above.

inlet and outlet pipes in place, before any backfilling begins. Any material around the base

section shall be removed to expose the entire side of the manhole. Pinholes and horizonal

seams shall be plugged with non-shrinking concrete grout.

The inlet and outlet pipes and plugs shall be braced to prevent movement during the test.

The Contractor shall use air inflated plugs in good condition.

The vacuum test shall be performed using equipment acceptable to the Engineer. The

equipment shall be in good operating condition. Gauges shall not have any broken glass or

other visible abnormalities. The test shall be performed by trained personnel familiar with

the equipment and the test.

The test shall have a minimum duration of two minutes. The vacuum shall be pumped

down to 10 inches of mercury on an acceptable gauge and held. At the time the removal of

air is stopped, the test time shall begin.

Any manhole where the vacuum drops to nine inches of mercury or less in a time less than

that specified in Table 628.09A shall have failed the test.

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TABLE 628.09A – MINIMUM TIME REQUIRED TO HOLD VACUUM

Depth of

Manhole (feet)

Minimum Time Required to Hold Vacuum (sec.)

36 Inch

Diameter

48 Inch

Diameter

60 Inch

Diameter

< 4 7 10 13

6 11 15 20

8 14 20 26

10 18 25 33

12 21 30 39

14 25 35 46

16 29 40 52

18 32 45 59

20 35 50 65

22 39 55 72

24 42 59 78

26 46 64 85

28 49 69 91

30 53 74 98

628.10BACKFILLING

shall be removed from the excavation. Backfilling shall not be done in freezing temperatures, with

frozen materials, or when materials already placed are frozen.

excavation and to a depth beneath the pipe as specified on the Plans. This material shall be sand,

granular backfill for structures, or crushed stone and shall not contain large lumps and stones over

1 inch in diameter. As the pipe is laid, bedding material shall be extended to the spring line of the

pipe and leveled along the width of the trench.

The pipe installation shall be inspected and approved by the Engineer before being covered.

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spring line of the pipe to a depth of 12 inches over the top of the pipe. The material shall be

carefully placed and spread over the width of the trench and compacted using an approved tamper.

The Contractor shall take all necessary precautions during placement and compaction of the

bedding and pipe envelope materials to prevent either damage to or displacement of the pipe.

above the envelope area shall be suitable material that was removed during excavation or obtained

from borrow, and when compacted shall make a dense stable fill. The material shall not contain

vegetation, porous matter, masses of roots, individual roots more than 18 inches long or 1/2 inch

thick, or stones greater than 50 pounds or larger than 6 inches in the widest dimension.

If additional material is required, it shall be furnished from approved sources.

Backfill material shall be evenly spread and compacted in lifts not more than 12 inches thick or as

approved by the Engineer. Previously placed or new materials shall be moistened by sprinkling, if

required, to ensure proper bond and compaction and shall conform to the requirements of

Subsection 203.11(d).

Whatever method of compacting backfill is used, care shall be taken that stones and lumps shall

not become nested and that all voids between stones shall be completely filled with fine material.

No compacting shall be done when the material is too wet to be compacted properly. If the material

is too wet, the work shall be suspended until the previously placed and new materials have dried

out sufficiently to permit proper compaction, or until other precautions are taken as necessary to

obtain proper compaction.

Backfill material shall be compacted to maximum dry density percentages specified in Table

A and the in-place moisture content shall be not more than 2% above the optimum moisture

content, as determined by AASHTO T 180, Method C.

TABLE 628.10A – MAXIMUM DRY DENSITY FOR BACKFILL

Backfill Location Maximum Dry

Density

Around all structures, under roadway

paving, shoulders, and embankments 95%

All other areas 90%

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628.11HOUSE CONNECTIONS. In general, the Engineer will require new house connections for each

existing residential and commercial structure. The actual location of each new house connection shall be

determined in the field by the Engineer.

Stub-outs for future connections shall be a minimum of 24 inches long and shall have ends closed with

suitable approved plugs specially made for the purpose. All joints and spaces shall be thoroughly filled

with mortar. Plugs shall be installed so as to be readily removable without damage to the pipe when future

connections are made.

628.12MANHOLES. Manholes shall conform to the requirements of Section 604

628.13TRANSFER OF EXISTING SYSTEM TO NEW SYSTEM. The Contractor shall maintain

existing sewage flows during construction of the new sanitary sewer systems and during connection of

the new system to the existing system. In locations of conflict between new sanitary sewer main and

existing lateral services, Contractor shall furnish and install temporary sewer services. The Contractor

shall submit and receive approval of a maintenance of flow plan which shall include a detailed construction

schedule and procedure for transferring service from the existing system to the new system prior to

beginning work on the system.

When new sewers are connected to existing manholes and existing pipe penetrations cannot be used, pipe

openings shall be core drilled to accommodate the new pipe. Approved watertight boots or gaskets shall

be furnished and installed in accordance with the manufacturer’s instructions, and then the opening around

the gasket shall be grouted to a watertight seal. Existing manhole grouted inverts, flow lines, and aprons,

shall be chipped out and re-grouted to accommodate the new piping. Grout holes or damage in manhole

wall opening shall be repaired with non-shrink grout until flush with the outside face of wall. The exterior

of the manholes shall be coated with a bitumastic or other watertight sealant meeting the approval of the

sewer owner.

Prior to making the connection, the Contractor shall notify the owner and the Engineer in writing 3

calendar days in advance of the date when the Contractor will be ready to complete the work.

After this connection is made, the Contractor shall divert the sewage flow to the new sewer, transfer the

house services from the existing system to the new sewer, and abandon the existing system as shown on

the Plans or directed by the Engineer.

Where existing manholes and other underground structures are to be abandoned, the Contractor shall

remove the frame and cover, remove the top a minimum of 24 inches below subgrade or final slope grade,

whichever is greater, plug the pipes with Class C concrete, and backfill with suitable material. Frames and

covers shall remain the property of the owner of the system. Material placed in the manholes and other

structures shall be compacted to the requirements of the surrounding subgrade material.

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628.14WATER MAIN AND SEWER SEPARATION. Where water mains and sewer lines are in the

same area as a result of work under the Contract, parallel installations or crossings of such installations

shall conform to the requirements as specified in the Recommended Standards for Water Works and

Recommended Standards for Wastewater Facilities, as well as the standards of the Vermont Drinking

Water and Groundwater Protection Division, and as specified below.

In addition, all reconstruction or relocation of existing water or sewer facilities shall be as approved by

the utility owner. Such approval shall be obtained for scheduling, materials, and configuration of the

reconstruction or relocation.

feet horizontally from sewers, storm drains, or manholes whenever possible, with the distance

measured edge-to-edge.

When local conditions prevent a horizontal separation of 10 feet, a water main and sewer may be

laid closer to each other provided that:

materials and with joints that are equivalent to water main standards of construction and

shall be pressure tested to ensure that it is watertight prior to backfilling.

All crossings, whether identified by the Engineer or the Contractor, shall be constructed in

accordance with these specifications and as approved by the Engineer.

Under normal conditions, water mains crossing house sewers, storm sewers, or sanitary sewers

shall be laid above the sewer line with a separation of at least 18 inches between the bottom of the

water main and the top of the sewer pipe.

When local conditions prevent such a vertical separation, the following construction shall be used:

are equivalent to water main standards of construction, such as cast or ductile iron pipe

with push-on or mechanical joints, or approved equal.

settling on and breaking of the water mains.

equidistant and as far as possible from the sewer.

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628.15METHOD OF MEASUREMENT. The quantity of PVC Sewer Pipe; PVC Sewer Pipe, All-

Inclusive; Ductile Iron Sewer Pipe; and Ductile Iron Sewer Pipe, All-Inclusive of the size specified to be

measured for payment will be the number of linear feet of sewer line installed in the complete and accepted

work, as measured along the flow line of the pipe.

The quantity of Re-Laying Sewer Pipe to be measured for payment will be the number of linear feet of

sewer pipe re-laid in the complete and accepted work, as measured along the flow line of the pipe.

The quantity of Sewer Cleanout and Sewer Cleanout, All-Inclusive to be measured for payment will be

the number of units of each installed in the complete and accepted work.

The quantity of Transfer to New System, Sanitary Sewer, All-Inclusive to be measured for payment will

be on a unit basis for each transfer performed in the complete and accepted work.

628.16BASIS OF PAYMENT. The accepted quantity of PVC Sewer Pipe and Ductile Iron Sewer Pipe

of the size specified will be paid for at the Contract unit price per linear foot. Payment will be full

compensation for furnishing, transporting, handling, installing, and testing the materials specified; for

making all necessary connections; and for furnishing all labor, equipment, tools, and incidentals necessary

to complete the work.

The accepted quantity of PVC Sewer Pipe, All-Inclusive and Ductile Iron Sewer Pipe, All-Inclusive of

the size specified will be paid for at the Contract unit price per linear foot. Payment will be full

compensation for furnishing, transporting, handling, installing, and testing the materials specified

including, but not limited to, saw-cutting existing pavement and existing concrete roadway, excavation,

dewatering as required, pipe bedding and blanket, backfill, sewer pipe, fittings including elbows, eccentric

reducers when reducing size, solid sleeves, gasketed couplings, flexible rubber transition couplings, and

end caps; and for making all necessary connections; for calibrated television inspection for deflection

testing; and for furnishing all labor, equipment, tools, and incidentals necessary to complete the work.

If the excavation and backfill for a sanitary sewer system component is increased by 12 inches or less due

to lowering the grade, changing the location, or poor foundation material, additional excavation and

backfill will be considered incidental to PVC Sewer Pipe, All-Inclusive or Ductile Iron Sewer Pipe, All-

Inclusive. If the excavation and backfill for a sanitary sewer system component is increased by more than

12 inches due to lowering the grade, changing the location, or poor foundation material, additional

excavation and backfill will be paid under the appropriate Contract items.

The accepted quantity of Re-Laying Sewer Pipe will be paid for at the Contract unit price per linear foot.

Payment will be full compensation for furnishing all labor, equipment, tools, and incidentals necessary

for re-laying sewer pipe at the locations specified in the Contract and as directed by the Engineer.

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Excavation, including backfill and disposal of excavated material not suitable for backfill, will be paid for

at the Contract unit price per cubic yard for Trench Excavation of Earth or Trench Excavation of Rock, as

specified in Section 204. When material is required to replace poor foundation material below the normal

grade of the pipe it will be paid for as Granular Backfill for Structures. Concrete shown on the Plans or

directed by the Engineer will be paid for as Concrete, Class B, unless otherwise specified. Sheeting left in

place will be paid for as incidental to the appropriate excavation Contract item.

The accepted quantity of Sewer Cleanout will be paid for at the Contract unit price per each. Payment will

be full compensation for furnishing, transporting, handling, installing, and testing the materials specified

including, but not limited to, PVC pipe, fittings, caps, cast iron sewer cleanout ring and covers, concrete

collar, and for making all necessary connections; and for furnishing all labor, equipment, tools, and

incidentals necessary to complete the work.

The accepted quantity of Sewer Cleanout, All-Inclusive, will be paid for at the Contract unit price per

each. Payment will be full compensation for furnishing, transporting, handling, installing, and testing the

materials specified including, but not limited to, excavation, dewatering as required, bedding, backfill,

PVC pipe, fittings, caps, cast iron sewer cleanout ring and covers, concrete collar, and for making all

necessary connections; and for furnishing all labor, equipment, tools, and incidentals necessary to

complete the work.

The accepted quantity of Transfer to New System, Sanitary Sewer, All-Inclusive will be paid for at the

Contract lump sum price bid. Payment will be full compensation for furnishing all labor, materials,

equipment, tools, and incidentals suitable for effecting the transfer of systems as specified. Items for

payment under this lump sum amount include, but are not limited to, development of a maintenance of

flow plan, maintenance of existing sewage flows including all bypass pumping as required, installation of

temporary sewer service piping at conflicts between new and existing piping and the subsequent removal

of the temporary sewer service piping when no longer required, and performing all exploratory excavation

as indicated in the exploratory excavation plan on each existing lateral sewer service as necessary prior to

construction of the new sewer main to determine the service’s size, material, and location; excavation and

location of the new connection point, diversion of sewage flow from the connection point, associated

pumping and dewatering of connection area, making the physical connection into the existing system

including, but not limited to, excavation and backfill, all fittings, piping and appurtenances, coring into

existing structures as required, transfer of sewage flow to the new system, abandonment of existing

system, and furnishing all labor, equipment, tools, and incidentals necessary to complete the work.

Payment for excavatable flowable fill required to abandon existing sewer mains and services will be made

under item 541.4600.

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Payment will be made under:

Pay Item Pay Unit

00 PVC Sewer Pipe ........................................................................................Linear Foot

06 PVC Sewer Pipe, 1.5 Inch.........................................................................Linear Foot

08 PVC Sewer Pipe, 2 Inch............................................................................Linear Foot

16 PVC Sewer Pipe, 4 Inch............................................................................Linear Foot

24 PVC Sewer Pipe, 6 Inch............................................................................Linear Foot

32 PVC Sewer Pipe, 8 Inch............................................................................Linear Foot

40 PVC Sewer Pipe, 10 Inch..........................................................................Linear Foot

48 PVC Sewer Pipe, 12 Inch..........................................................................Linear Foot

60 PVC Sewer Pipe, 15 Inch..........................................................................Linear Foot

72 PVC Sewer Pipe, 18 Inch..........................................................................Linear Foot

96 PVC Sewer Pipe, 24 Inch..........................................................................Linear Foot

00 PVC Sewer Pipe, All-Inclusive.................................................................Linear Foot

06 PVC Sewer Pipe, All-Inclusive, 1.5 Inch .................................................Linear Foot

08 PVC Sewer Pipe, All-Inclusive, 2 Inch ....................................................Linear Foot

16 PVC Sewer Pipe, All-Inclusive, 4 Inch ....................................................Linear Foot

24 PVC Sewer Pipe, All-Inclusive, 6 Inch ....................................................Linear Foot

32 PVC Sewer Pipe, All-Inclusive, 8 Inch ....................................................Linear Foot

40 PVC Sewer Pipe, All-Inclusive, 10 Inch ..................................................Linear Foot

48 PVC Sewer Pipe, All-Inclusive, 12 Inch ..................................................Linear Foot

60 PVC Sewer Pipe, All-Inclusive, 15 Inch ..................................................Linear Foot

72 PVC Sewer Pipe, All-Inclusive, 18 Inch ..................................................Linear Foot

96 PVC Sewer Pipe, All-Inclusive, 24 Inch ..................................................Linear Foot

00 Ductile Iron Sewer Pipe, Cement-Lined ...................................................Linear Foot

24 Ductile Iron Sewer Pipe, Cement-Lined, 6 Inch .......................................Linear Foot

32 Ductile Iron Sewer Pipe, Cement-Lined, 8 Inch .......................................Linear Foot

40 Ductile Iron Sewer Pipe, Cement-Lined, 10 Inch .....................................Linear Foot

48 Ductile Iron Sewer Pipe, Cement-Lined, 12 Inch .....................................Linear Foot

60 Ductile Iron Sewer Pipe, Cement-Lined, 15 Inch .....................................Linear Foot

72 Ductile Iron Sewer Pipe, Cement-Lined, 18 Inch .....................................Linear Foot

96 Ductile Iron Sewer Pipe, Cement-Lined, 24 Inch .....................................Linear Foot

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Pay Item Pay Unit

628.1700 Ductile Iron Sewer Pipe, Cement-Lined, All-Inclusive ............................Linear Foot

24 Ductile Iron Sewer Pipe, Cement-Lined, All-Inclusive, 6 In. ..................Linear Foot

32 Ductile Iron Sewer Pipe, Cement-Lined, All-Inclusive, 8 In. ..................Linear Foot

40 Ductile Iron Sewer Pipe, Cement-Lined, All-Inclusive, 10 In. ................Linear Foot

48 Ductile Iron Sewer Pipe, Cement-Lined, All-Inclusive, 12 In. ................Linear Foot

60 Ductile Iron Sewer Pipe, Cement-Lined, All-Inclusive, 15 In. ................Linear Foot

72 Ductile Iron Sewer Pipe, Cement-Lined, All-Inclusive, 18 In. ................Linear Foot

96 Ductile Iron Sewer Pipe, Cement-Lined, All-Inclusive, 24 In. ................Linear Foot

628.1800 Re-Laying Sewer Pipe ..............................................................................Linear Foot

628.3000 Sewer Cleanout .........................................................................................Each

628.3100 Sewer Cleanout, All-Inclusive ..................................................................Each

628.4300 Transfer to New System, Sanitary Sewer, All-Inclusive ..........................Lump Sum

629

6-117SECTION 629 – WATER SYSTEMS

629.01DESCRIPTION . This work shall consist of the construction or reconstruction of water lines and

appurtenances.

629.02MATERIALS . Materials shall meet the requirements of the following subsections:

Sand Borrow and Cushion ................................ ................................ ......................... 703.03 Coarse Aggregate for Concrete ................................ ................................ .................. 704.02 Granular Backfill for Structures ................................ ................................ ................. 704.08 Plastic Pipe, Flexible ................................ ................................ ................................ ..740.01 Plastic Pipe, Rigid (PVC) ................................ ................................ .......................... 740.02 Copper Tube, Seamless ................................ ................................ .............................. 740.03 Ductile Iron Pipe, Cement Lined ................................ ................................ ............... 740.05 Chlorine Solution ................................ ................................ ................................ .......742.01 Concrete shall conform to the requirements of Section 541 for Concrete, Class B, unless otherwise specified. Sleeves shall conform to the requirements of Section 625 . Crushed stone bedding shall be in accordance with Subsection 704.02 and meet the gradatio n requirements of Table 704.02 C. Ductile iron fittings shall be so -called compact or short -bodied fittings.

629.03GENERAL REQUIREMENTS . The Contractor shall not disrupt the operation of existing water

facilities without prior written approval of the Engineer. When existing underground utilities, which are not scheduled for removal or abandonment, are encountered in the excavation, they shall be adequately supported and protected from damage. Any damage to utilities shall be repaired promptly in accordance with Subsection 107.1 2 at no additional cost to the Agency. Any work associated with existing water lines or appurtenances shown on the Plans to be removed or abandoned in place will be considered incidental to the work under this section .