33 42 00 - Stormwater Conveyance.pdf

33 42 00 - STORMWATER CONVEYANCE

Herbert, Rowland & Grubic, Inc. 33 42 00 - 1 007297.0444

SECTION 33 42 00 - STORMWATER CONVEYANCE

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Storm sewer pipe and related appurtenances.

B. Related Requirements:

1. Section 03 20 00 - Concrete Reinforcing: Reinforcement of concrete cradles.

2. Section 03 30 00 - Cast-in-Place Concrete.

3. Section 03 60 00 – Grouting.

4. Section 31 05 13 - Soils for Earthwork: Soils for backfill in trenches.

5. Section 31 05 16 - Aggregates for Earthwork: Aggregate for backfill in trenches.

6. Section 31 05 19.13 - Geotextiles for Earthwork: Geotextile filter fabric.

7. Section 31 23 16.13 - Trenching: Execution requirements for trenching, excavation and backfill as required by this Section.

1.2 REFERENCE STANDARDS

A. West Manchester Township Construction and Materials Specifications Manual, latest edition.

B. American Society for Testing and Materials (ASTM):

1. ASTM C 32, Sewer Manhole and Brick.

2. ASTM C 76, Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe.

3. ASTM C 270, Mortar for Unit Masonry.

4. ASTM C 507, Reinforced Concrete Elliptical Culvert, Storm Drain, and Sewer Pipe.

5. ASTM C 443, Joints for Circular Sewer and Culvert Pipe, Using Rubber Gaskets.

6. ASTM D 3212, Standard Specification for Joints for Drain and Sewer Pipes Using

Flexible Elastomeric Seals.

C. Pennsylvania Department of Transportation (PennDOT):

1. The "PennDOT Sections" noted herein refer to sections contained in the current

Commonwealth of Pennsylvania Department of Transportation Specifications Publication 408, as supplemented or revised. All work shall be completed in accordance with the applicable PennDOT standards, supplements, and interims unless otherwise noted.

2. Commonwealth of Pennsylvania Department of Transportation Specifications Publication 408, latest edition:

a. PennDOT Section 601 Pipe Culverts.

b. PennDOT Section 604 Combination Storm Sewer and Underdrain.

c. PennDOT Section 610 Pipe Underdrain and Pavement Base Drain.

3. Commonwealth of Pennsylvania Department of Transportation Standards for Roadway Construction Publication 72M, latest edition.

4. Commonwealth of Pennsylvania Department of Transportation Bulletin 15.

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5. Commonwealth of Pennsylvania, Pennsylvania Code, Title 67, Transportation, Department of Transportation, Chapter 459, Occupancy of Highways by Utilities, as supplemented or revised.

6. Commonwealth of Pennsylvania, Pennsylvania Code, Title 67, Transportation, Department of Transportation, Chapter 213, Temporary Traffic Control Guidelines (PennDOT Chapter 213).

1.3 SUBMITTALS

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

B. Shop Drawings and Product Data: Furnish completely dimensioned shop drawings, catalog cut, or other data as required to provide a complete description of piping, fittings, stone, geotextile, and other appurtenances specified herein.

C. Certificates:

1. Certified records or reports of results of shop tests, records or reports will contain a sworn statement that shop tests have been performed as specified.

2. Provide manufacturer's sworn certification that pipe will be manufactured in accordance with specified reference standards for each pipe type.

1.4 QUALITY ASSURANCE

A. Design Criteria:

1. Use only one type and class of pipe in any continuous line of storm between structures, unless otherwise indicated on the Drawings or directed by the Engineer.

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

3. All materials shall be watertight.

B. Source Quality Control:

1. 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.

Material Test Method Number of Tests

a. Smooth Lined Corrugated Plastic Pipe

(SLCPP)

As specified in PennDOT Publi-cation 408.

As specified in PennDOT Pub-lication 408.

b. Smooth Lined Corrugated Plastic Com-bination Storm Sewer/Underdrain

As specified in PennDOT Publi-cation 408.

As specified in PennDOT Pub-lication 408.

c. Reinforced Concrete Pipe (RCP) As specified in PennDOT Publi-cation 408.

As specified in PennDOT Pub-lication 408.

d. Corrugated Metal Pipe (CMP) As specified in PennDOT Publi-cation 408.

As specified in PennDOT Pub-lication 408.

e. Aluminized-Steel Spiral Rib Pipe (ASRP) As specified in PennDOT Publi-cation 408.

As specified in PennDOT Pub-lication 408.

Herbert, Rowland & Grubic, Inc. 33 42 00 - 3 007297.0444

2. Laboratory Tests: The 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. These laboratory tests shall be at no expense to the Owner.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Deliver, store and handle piping and related products in accordance with Section 01 61 00 - Product Requirements, manufacturer’s recommendations, and as supplemented herein.

B. Pipe and related materials to be loaded and unloaded by lifting with hoists or skidding so as to avoid shock or damage. Under no circumstances drop or skid such material against other products already on ground.

C. Handle pipe and related materials at all times with care to avoid damage. Interior kept free from dirt and foreign matter. All pipe and appurtenances carefully lowered or raised into place, with suitable equipment in manner that will prevent damage to material. Do not drop or dump pipe or accessories under any circumstances.

D. Thoroughly inspect pipe, pipe linings, fittings, and all related materials for defects prior to being unloaded and again prior to being installed. Repair or replace any defective, damaged, or unsound material, as determined by Engineer, at no additional cost to Owner.

E. All lumps, blisters, and excess coating removed from ends of each pipe. Joints brushed and wiped clean, dry and free from oil and grease before pipe is installed.

1.6 SITE CONDITIONS

A. Environmental Requirements:

1. Keep trenches dewatered until initial bedding has been placed, pipe joints have been made, and initial bedding and concrete cradle and encasement, if any, have cured.

2. Under no circumstances shall pipe be laid in water or on bedding containing frost.

3. Do not lay pipe when weather conditions are unsuitable, as may be determined by the Engineer, for pipe laying work.

PART 2 - PRODUCTS

2.1 PIPE AND FITTINGS

A. Smooth Lined Corrugated Plastic Pipe (SLCPP) Storm Sewer Culverts:

1. Smooth Lined Corrugated Plastic Pipe (SLCPP) shall meet the requirements of

PennDOT Publication 408, Section 601.

2. Smooth Lined Corrugated Plastic Pipe (SLCPP) joints shall be watertight and be provided with bell and spigot type or the integral type joints.

Herbert, Rowland & Grubic, Inc. 33 42 00 - 4 007297.0444

3. Smooth Lined Corrugated Plastic Pipe (SLCPP) manufacturer shall be an approved manufacturer/supplier as listed in PennDOT Bulletin 15.

B. Smooth Lined Corrugated Plastic Pipe Combination Storm Sewer/Underdrain Culverts:

1. Smooth Lined Corrugated Plastic Combination Storm Sewer/Underdrain shall meet the requirements of PennDOT Publication 408, Section 604.

2. Smooth Lined Corrugated Plastic Pipe Combination Storm Sewer/Underdrain joints shall be watertight and be provided with bell and spigot type or the integral type joints.

3. Smooth Lined Corrugated Plastic Combination Storm Sewer/Underdrain manufacturer shall be an approved manufacturer/supplier as listed in PennDOT Bulletin 15.

C. Reinforced Concrete Pipe (RCP) Storm Sewer Culverts:

1. Reinforced Concrete Pipe (RCP) shall meet the requirements of PennDOT

Publication 408, Section 601.

2. Reinforced Concrete Pipe (RCP) joints shall be watertight and be provided with a gasketed band.

3. Reinforced Concrete Pipe (RCP) manufacturer shall be an approved manufacturer/supplier as listed in PennDOT Bulletin 15.

D. Pipe materials shall be limited to those permitted by the West Manchester Township Construction and Materials Specifications Manual. Acceptable materials include RCP, HDPE/SLCPP, and PVC meeting PennDOT Publication 408. CMP and aluminized steel pipe shall not be permitted unless specifically approved by the Township Engineer for specific applications.

2.2 PIPELINE DETECTION AND MARKING

A. Pipeline detection tape: Comply with Section 33 05 97.

2.3 PIPING SPECIALTIES

A. Tie-in to Existing Storm Pipe/Storm Structures:

1. Tie-ins/connection to/from existing pipes and/or structures to provide a watertight seal.

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

3. Dissimilar pipe couplings shall consist of:

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

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

4. Dissimilar pipe couplings shall be Dissimilar Pipe Coupling as manufactured by Mar Mac Construction.

B. Concrete Cradle, Encasement, and Anchors: 3,000 PSI 28-day compressive strength as specified for Class A Concrete in PennDOT Publication 408, Section 704.

Herbert, Rowland & Grubic, Inc. 33 42 00 - 5 007297.0444

C. Pipe Bulkhead:

1. Pipe Bulkhead shall consist of sewer brick and mortar.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Section 01 73 00 - Execution Requirements: Requirements for installation examination.

B. Carefully examine each section of pipe and each pipe fitting immediately prior to laying for conformance with the inspection requirements of the appropriate referenced standard.

C. Pipe that is damaged shall be removed and rejected from the Project.

3.2 PREPARATION

A. Section 01 73 00 - Execution Requirements: Requirements for installation preparation.

B. Pipes:

1. Clean piping interior and mating surfaces of bell, spigot and gasket before lying.

Maintain clean until completed work is accepted.

2. Perform trenching for storm sewer pipe and place pipe bedding as specified in

Section 31 23 16.13 and as follows:

a. SLCPP – PennDOT Publication 408, Section 601 and RC-30M.

b. RCP – PennDOT Publication 408, Section 601 and RC-30M.

c. ASRP – PennDOT Publication 408, Section 601 and RC-30M.

d. Combination Storm Sewer/Underdrain - PennDOT Publication 408, Section 604 and RC-30M.

3. Subgrade Preparation: Prior to placement of bedding, trench subgrade shall be proof rolled and compacted to a stable, non-yielding condition. Unsuitable or unstable material shall be undercut and replaced as directed by the Engineer.

Work shall not proceed until subgrade conditions are acceptable to the Engineer.

4. Areas failing to meet compaction requirements shall be reworked, recompacted, or replaced as directed by the Engineer.

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

6. Where work is performed in existing streets or paved areas, trench shall be backfilled with compacted 2A stone, placed per PennDOT Publication 408 requirements, to a depth of not less than the bottom of the pavement subbase.

3.3 INSTALLATION

A. Conduct operations not to interfere with, interrupt, damage, destroy, or endanger integrity of surface structures or utilities in immediate or adjacent areas.

B. Pipe Installation General Requirements:

1. Installation shall comply with PennDOT Publication 408 and the West Manchester

Township Construction and Materials Specifications Manual.

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2. Lay pipe proceeding upgrade true to line and grades given. Lay bell and spigot pipe with bell end upgrade unless shown otherwise on the drawings or directed by the Engineer.

3. Pipe shall maintain positive drainage. Sections exhibiting reverse slope or standing water shall be corrected.

4. 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 pipe line.

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

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

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

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

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

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

Replace at Contractor's expense.

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

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

12. Bed pipe using materials specified in Section 31 23 16.13 - Trenching.

13. 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.

14. 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 handsaws will not be permitted. Grind smooth cut ends and rough edges. Bevel slightly, cut end for push-on connections.

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

C. Pipe Joints:

1. Make pipe and fittings joints according to pipe manufacturer's specifications and to specifications previously identified for pipe.

D. Pipe Alignment and Grade:

1. Lay and maintain all pipe at the required lines and grades. Do not deviate from the required line and grade, except with the approval of the Engineer.

2. Deflect pipe joints where indicated on the drawings. Deflections shall not exceed pipe manufacturer's recommended maximum allowable deflection.

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

3.4 TOLERANCES

A. Section 01 40 00 - Quality Requirements: Requirements for tolerances.

Herbert, Rowland & Grubic, Inc. 33 42 00 - 7 007297.0444

B. Maximum Variation from Indicated Pipe Slope: 1/8 inch in 10 feet.

3.5 FIELD QUALITY CONTROL

A. Section 01 40 00 - Quality Requirements: Requirements for tolerances.

B. General Requirements: Conduct tests specified herein so that each pipe line installed in the Project is tested to the Engineer's satisfaction:

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

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

3. Work performed without required inspection or testing may be rejected and required to be uncovered, removed, or replaced at no additional cost.

C. Cleaning Prior to Tests: Before tests are conducted, clean piping until free of dirt or silt or construction debris.

D. Alignment: After the storm sewer mains have been laid and backfilled, a light will be flashed between inlets or inlet locations to determine whether the alignment of the storm 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 storm sewer:

1. Horizontal Alignment: Each section (structure to structure) of storm 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 Engineer, before the work shall proceed and before acceptance of and/or payment shall be made.

2. Vertical Alignment: No vertical displacement or misalignment will be accepted.

The Contractor, to the satisfaction of the Engineer, shall correct all defects before the work shall proceed and before acceptance of and/or payment shall be made.

3. Deflection Testing: Flexible pipe (HDPE/SLCPP/PVC) may be subject to deflection testing prior to final acceptance. Deflection shall not exceed allowable limits established by applicable standards or manufacturer recommendations.

Deficient pipe shall be corrected or replaced.

E. Line and Grade Verification: Invert elevations and pipe alignment shall be verified prior to acceptance. Survey verification or other methods may be required by the Engineer to confirm compliance with the approved plans.

3.6 PROTECTION

A. Section 01 73 00 - Execution Requirements: Requirements for protecting finished Work.

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

C. Pipe shall not be subjected to construction loading until sufficient cover has been placed and compacted in accordance with applicable standards.

END OF SECTION