33 31 00 - SANITARY SEWERAGE PIPING

Herbert, Rowland & Grubic, Inc. 33 31 00 - 1 000598.0465

SECTION 33 31 00 - SANITARY SEWERAGE PIPING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Sanitary sewerage piping.

1.2 REFERENCE STANDARDS

A. American Association of State Highway and Transportation Officials:

1. AASHTO T 180 - Standard Method of Test for Moisture-Density Relations of Soils

Using a 4.54-kg (10-lb) Rammer and a 457-mm (18-in.) Drop.

B. ASTM International:

1. ASTM C923 - Standard Specification for Resilient Connectors Between Reinforced

Concrete Manhole Structures, Pipes, and Laterals.

2. ASTM D698 - Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/ft3 (600 kN-m/m3).

3. ASTM D1557 - Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbf/ft3 (2,700 kN-m/m3).

4. ASTM D1785 - Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120.

5. ASTM D2321 - Standard Practice for Underground Installation of Thermoplastic

Pipe for Sewers and Other Gravity-Flow Applications.

6. ASTM D2729 - Standard Specification for Poly(Vinyl Chloride) (PVC) Sewer Pipe and Fittings.

7. ASTM D3034 - Standard Specification for Type PSM Poly(Vinyl Chloride) (PVC)

Sewer Pipe and Fittings.

8. ASTM D6938 - Standard Test Method for In-Place Density and Water Content of

Soil and Soil-Aggregate by Nuclear Methods (Shallow Depth).

9. ASTM F477 - Standard Specification for Elastomeric Seals (Gaskets) for Joining

Plastic Pipe.

1.3 SUBMITTALS

A. Section 01 33 00 - Submittal Procedures: Requirements for submittals.

B. Product Data: Submit manufacturer catalog cuts and other information indicating proposed materials, accessories, details, and construction information.

C. Test and Evaluation Reports: Submit reports indicating field tests made and results obtained.

D. Manufacturer Instructions:

1. Indicate special procedures required to install specified products.

E. Source Quality-Control Submittals: Indicate results of factory tests and inspections.

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F. Field Quality-Control Submittals: Indicate results of Contractor-furnished tests and inspections.

1.4 QUALITY ASSURANCE

A. Design Criteria:

1. Use only one type and class of pipe in any continuous line of sewer between structures, unless otherwise approved by the Owner or Engineer.

2. Use pipe and fittings designed to withstand imposed trench loadings and conditions at the various locations.

B. Source Quality Control:

1. Perform hydrostatic and leakage shop tests on all pipe and fittings in accordance with applicable AWWA Standards.

2. Shop Tests: Each pipe manufacturer must have facilities to perform listed tests.

The Engineer reserves the right to require the manufacturer to perform such additional number of tests as the Engineer may deem necessary to establish the quality of the material offered for use.

3. Laboratory Tests: The Owner Representative or Engineer reserves the right to require that laboratory tests also be conducted on materials that are shop tested.

Furnish without compensation, labor, materials, and equipment necessary for collecting, packaging, and identifying representative samples of materials to be tested and the shipping of such samples to the Testing Laboratory. The Contractor will pay for these laboratory tests.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Inspection: Accept materials on Site in manufacturer's original packaging and inspect for damage.

B. Storage:

1. Store materials according to manufacturer instructions.

a. Do not stack pipe higher than recommended by the pipe manufacturer.

C. Protection:

1. Protect materials from moisture and dust by storing in clean, dry location remote from construction operations areas.

2. Block individual and stockpiled pipe lengths to prevent moving.

3. Provide additional protection according to manufacturer instructions.

1.6 EXISTING CONDITIONS

A. Field Measurements:

1. Verify field measurements prior to fabrication.

2. Indicate field measurements on Shop Drawings.

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PART 2 - PRODUCTS

2.1 GENERAL

A. All specials and every length of pipe shall be marked with the manufacturer's name or trademark, size, class, and the date of manufacture. Special care in handling shall be exercised during delivery, distribution, and storage of pipe to avoid damage and unnecessary stresses:

1. Damaged pipe will be rejected and shall be replaced at the Contractor's expense.

2. Pipe and specials stored prior to use shall be stored in such a manner as to keep the interior free from dirt and foreign matter.

B. The Contractor shall excavate test pits as required of all sewer connections and crossings which may affect the Contractor's work prior to ordering pipe and fittings to determine sufficient information for ordering materials.

2.2 GRAVITY SEWER PIPE AND FITTINGS

A. PVC (Gravity Sewer, SDR 35/PS 46, and SDR 26/PS 115) Pipe and Fittings:

1. Polyvinyl chloride (PVC) pipe, used for gravity sewer construction shall meet or exceed the requirements of ASTM D 3034 for 4-inch through 15-inch pipe and ASTM F679 for 18-inch through 36-inch pipe. The PVC sewer pipe shall have a minimum standard dimension ratio (SDR) of 35 and the minimum pipe stiffness, as tested in accordance with ASTM D 2412, shall be 46 or 115 psi when measured under 5 percent deflection at 73 degrees Fahrenheit.

2. Pipe shall be manufactured with integral wall bell and spigot joints in standard lengths not exceeding 20 feet:

a. SDR 35/PS 46 PVC Pipe shall not be used for gravity sewer piping that exceeds a 15 feet depth of cover.

b. SDR 26/PS 115 shall be used for gravity sewer pipe installed with a depth of cover between 15 to 20 feet.

c. Ductile Iron pipe shall be used for gravity sewer pipe installed at a depth of cover above 20 feet.

d. If the installation of pipe has a cover of less than 4’, the pipe class for the pipe shall be determined by utilizing the manufacturer’s load table, depth of cover, pipe diameter, and pipe bedding specified throughout the project.

3. All polyvinyl chloride (PVC) pipe and fittings shall utilize elastomeric O-ring gasketed joints assembled in accordance with the manufacturer’s recommendations. Gaskets shall have a minimum cross-sectional area of 0.20 square inches and conform to ASTM F477 specifications. Provide elastomeric gaskets that have been tested as suitable for continuous contact with domestic sewage.

4. Flexible Elastomeric Seals shall conform to ASTM 3212.

5. A three-piece lateral connection shall be used for connection to PVC or HDPE pipe consisting of a PVC hub, rubber sleeve, and stainless-steel band. 4" through 18" forming a water-tight connection. Three-piece lateral connections shall be compression fit into the cored wall of a PVC pipe and requires no special tools.

a. Three-piece lateral connections shall be Inserta-Tee FatBoy as manufactured by Advanced Drainage Systems, Inc., or equal.

Herbert, Rowland & Grubic, Inc. 33 31 00 - 4 000598.0465

2.3 DUCTILE IRON PIPE

A. Ductile iron pipe (DIP) of the sizes shown or specified shall conform to AWWA C110 and

AWWA C151.

B. Piping shall be Thickness Class 52. Ductile iron pipe shall be a minimum Grade 60-42-10 for ductile iron pipe centrifugally cast in metal molds or sand-lined molds. All ductile iron pipe shall conform to ANSI A21.50 (AWWA C150) for thickness design and shall be supplied in 18- or 20-foot nominal lengths or as required to meet the requirements of the Drawings. All ductile iron pipe and specials shall be marked with the manufacturer's name or trademark, size, weight, thickness class, the date of manufacture, and the word "Ductile".

C. All pipe shall be epoxy lined on the interior of the pipe and have a bituminous coating on the exterior surfaces in accordance with ANSI A21.51 (AWWA C151). The epoxy lining shall meet the requirements of the coating as specified in Section 33 31 23.

D. Pipe shall be the class that equals or exceeds the pipe class as specified herein.

Requirements for various types of joints are described in the following paragraphs.

E. Push-on Joints: Bell and spigot pipe shall be provided with push-on, O-ring rubber gasket, compression type joints and shall conform to the requirements of ANSI A21.11 (AWWA C111). Fittings and specials shall be supplied with mechanical joints.

2.4 MISCELLANEOUS PIPE AND FITTINGS

A. Lateral Cleanout Cap: Provide SCH 40 threaded cap and raised head threaded cleanout plug to fit cleanout pipe.

B. Cleanout Frame and Cover:

1. Manufacturers:

a. Neenah Foundry Company.

b. Or approved equal.

2. Gray iron casting conforming to ASTM A48, Class No. 30, designed for AASHTO Highway Loading Class HS-20. Provide casting of uniform quality, free from blowholes, porosity, hard spots, shrinkage distortion or other defects.

3. Cast the letters “S” or “SEWER” integrally in the center of the cover in raised letters.

C. Vent Caps

1. Vent cap shall be PVC, Schedule 40, mushroom style vent cap. Screen shall be constructed of polypropylene with 17x17 mesh size. The open area shall be a minimum of 40%.

2.5 SHIELDED FLEXIBLE TYPE PIPE COUPLINGS

A. Shielded flexible type pipe transition couplings shall be provided where PVC and non-PVC, such as VCP or ACP, pipe is to be connected. Flexible type pipe coupling shall be constructed of an elastomeric compound meeting the requirements of ASTM C1173 and D5926. Coupling shall be provided with two (2) stainless steel take up clamps. Flexible pipe coupling shall be as manufactured by Fernco, Inc., Davison Michigan, or equal.

Herbert, Rowland & Grubic, Inc. 33 31 00 - 5 000598.0465

B. Coupling shall be provided with a 316 stainless steel clamp band. 6" and larger couplings shall have two nut and bolt take-up points per band. Coupling shall have a .012" thick, 300 Series stainless steel shear ring. Length manufactured shall be according to manufacturer based on coupling diameter. Width manufactured according to coupling width. Clamps shall be welded on to the shear ring in place.

C. Sakrete – High Strength Concrete Mix shall be placed below couplings and shall have bearing surface on existing and new pipe (both sides of coupling). See Standard Construction Details for more information.

2.6 DISSIMILAR PIPE COUPLING

A. Dissimilar pipe coupling shall be used where dissimilar storm sewer culverts, such as existing RCP to new RCP, are to be interconnected.

B. Dissimilar pipe couplings shall consist of:

1. Rubberized mastic laminated to strong reinforcing mesh designed for long term structural integrity.

2. High strength steel straps incorporated inside the coupler to compress the specially formulated mastic to permanently bond to the pipe surface.

C. Dissimilar pipe couplings shall be Dissimilar Pipe Coupling as manufactured by Mar Mac Construction, or equal.

2.7 FLEXIBLE PVC CAPS

A. Flexible PVC caps shall be provided where existing pipes are to be abandoned. Flexible type pipe coupling shall be constructed of an elastomeric compound. Caps shall be provided with one (1) stainless steel take up clamp. Flexible caps shall be as manufactured by Fernco, Inc. (Flexible PVC Qwik Cap) or approved equal.

2.8 PIPELINE DETECTION AND MARKING

A. Underground Warning or Pipeline Detection Tape for Sanitary Sewer

1. Refer to Section 33 05 97 – Identification and Signage for Utilities.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verify that excavations, dimensions, and elevations are as indicated on layout drawings.

3.2 PREPARATION

A. Perform trenching for sewer pipe and place pipe bedding as specified in Section 31 23 16.13.

B. Clean piping interior and mating surfaces of bell, spigot and gasket before laying. Maintain clean until completed work is accepted.

Herbert, Rowland & Grubic, Inc. 33 31 00 - 6 000598.0465

C. Dig bell holes sufficiently large to permit proper joint making and to ensure pipe is firmly bedded full length of its barrel.

D. Remove large stones or other hard materials that could damage pipe or impede consistent backfilling or compaction.

E. Protect and support existing sewer lines, utilities, and appurtenances.

F. Utilities:

1. Maintain profiles of utilities.

2. Notify Owner, Owner Representative, or Engineer if crossing conflicts occur.

3.3 INSTALLATION

A. Provide a minimum cover of 4-feet above the top of piping laid in trenches, unless otherwise approved by the Engineer.

B. General Requirements for Open Cut Pipe Installation:

1. Lay pipe proceeding upgrade true to line and grades given. Lay bell and spigot pipe with bell end upgrade unless otherwise directed by the Owner Representative or Engineer.

2. Contractor’s attention is called to the fact that a portion of the construction involved in this project is being conducted at minimum allowable grade. The Contractor shall use care in setting lasers or the other means that he plans to utilize for construction of the sewers.

a. If not constructed at the required grade, the Owner Representative or the Engineer shall have the option of directing the Contractor to relay the pipe to the required grade at no additional cost to the Owner.

3. Exercise care to ensure that each length abuts against the next in such manner that no shoulder or unevenness of any kind occurs along inside bottom half of pipeline.

4. Center spigot end in bell or socket end of previously laid pipe, shove tight and secure.

5. No wedging or blocking permitted in laying pipe unless by written order of Engineer.

6. Before joints are made, bed each section of pipe full length of barrel with recesses excavated so pipe invert forms continuous grade with invert of pipe previously laid.

a. Do not bring succeeding pipe into position until the preceding length is embedded and securely in place.

7. Walking or working on completed pipeline, except as necessary in tamping and backfilling, not permitted until trench is backfilled one foot deep over top of pipes.

8. Take up and relay pipe that is out of alignment or grade, or pipe having disturbed joints after laying.

9. Take up and replace with new, such in place pipe sections found to be defective.

Replace at Contractor's expense.

10. Take necessary precautions to prevent newly laid pipe from floating as a result of water accumulation in the trench, or the collapse of the pipeline from any cause.

Restore or replace pipe as necessary at Contractor's expense.

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11. At the close of each day's work, and at such other times when pipe is not being laid, protect open end of pipe with a close-fitting stopper.

12. Cut pipe using only equipment specifically designed for that purpose such as an abrasive wheel, rotary wheel cutter, a guillotine pipe saw or a milling wheel saw.

The use of chisels or hand saws will not be permitted. Grind smooth cut ends and rough edges. Bevel slightly, cut end for push-on connections.

13. Where cutting of pipe is necessary, minimum laying length shall be five (5) feet.

C. Specific Requirements:

1. Install plastic pipe and fittings and assemble joints according to ASTM D2321 for

Class 1 bedding material.

2. Refer to Section 31 23 33 for backfilling requirements.

3. Pipeline detectable tape shall be installed continuously along all gravity sewer lines. The tape shall be installed directly above each pipeline and two (2) feet from the ground surface.

D. Service Connection Fittings:

1. Make connections to sewer using fittings of same material and joint configuration as the sewer at the planned point of branch connection.

2. Use commercially manufactured wye fittings and one-eighth bends.

3. Set wye branches at proper vertical angles as required to bring service connections to the proper depth.

4. Fitting locations shall be determined in the field by the Owner Representative or

Engineer.

E. Joints

1. Make joints watertight. Immediately repair detected leaks and defects. Methods of repair subject to the Owner Representative’s or Engineer's approval.

F. Alignment and Grade:

1. Lay and maintain all pipe at the required lines and grades as shown on the

Drawings. Place fittings and valves at the required locations with joints centered, and all valve stems plumb.

a. Do not deviate from the required line and grade, except with the approval of the Owner Representative or Engineer.

2. Deflections shall not exceed pipe manufacturer's recommended maximum allowable deflection.

3. Do not change grade or alignment without Owner Representative’s or Engineer's approval.

3.4 WYE BRANCHES AND INSERTA-TEES

A. Install WYE branches or pipe tees at locations consistent with pipe laying operations in accordance with the Standard Construction Details. Use standard fittings of the same material and joint type as the pipeline into which they are installed.

B. For tapping connections into an existing pipeline refer to standard details.

1. The tapping connection shall have watertight and airtight joints.

Herbert, Rowland & Grubic, Inc. 33 31 00 - 8 000598.0465

3.5 LATERAL CLEANOUTS

A. Where directed by the Owner Representative or Engineer and in accordance with the details shown on the Standard Construction Details, cleanouts shall be constructed behind the curb line or at the property line.

B. All pipes shall conform to the specifications for main line pipe and laterals. The cleanout shall be constructed in accordance with the details shown on the Standard Construction Details.

C. All cleanouts in traffic areas shall be provided with suitable cast iron valve box and covers as shown in the Standard Construction Details.

3.6 CRADLES AND ENCASEMENTS:

A. Provide concrete cradles and encasements in accordance with the Standard Construction Details. Encasements and cradles shall not be poured when there is a danger of freezing unless precautions are taken to prevent such freezing.

3.7 FIELD QUALITY CONTROL

A. General Requirements: Conduct tests specified herein so that each pipeline installed in the Work is tested to the Owner Representative's or Engineer’s satisfaction.

1. Provide tools, materials (including water), apparatus and instruments necessary for pipeline testing.

2. Conduct tests in the presence of and to the satisfaction of the Owner

Representative or Engineer.

B. Cleaning Prior to Tests: Before tests are conducted, clean piping including sewers, branches and service connections until free of dirt or silt or construction debris.

C. Alignment: After the gravity mains have been laid and backfilled, a light will be flashed between manholes or manhole locations to determine whether the alignment of the sewer is true and whether any pipe has been displaced, broken or otherwise damaged subsequent to laying. This test will again be conducted before final acceptance of the sewer.

D. Horizontal Alignment: Each section (manhole to manhole) of sewer shall show no less than a three-quarter (3/4) light circle throughout its length and any and all defects shall be corrected by the Contractor, to the satisfaction of the Owner Representative or Engineer, before the work shall proceed and before acceptance.

E. Vertical Alignment: No vertical displacement or misalignment will be accepted. The Contractor, to the satisfaction of the Owner Representative or Engineer, shall correct all defects before the work shall proceed and before acceptance.

F. Refer to Section 33 01 30.11 Television Inspection of Sewers, 33 05 05.41 Air Testing, and Section 33 05 05.43 Mandrel Testing for proper testing for the associated item.

Herbert, Rowland & Grubic, Inc. 33 31 00 - 9 000598.0465

3.8 PROTECTION

A. Protect pipe and aggregate cover from damage or displacement until backfilling operation is in progress.

B. Cap open ends of piping during periods of Work stoppage.

END OF SECTION