Chrysler LLCConstruction Standards

12/17/04

SECTION 02630 - STORM DRAINAGE

PART 1 - GENERAL

1.1SUMMARY

  1. This Section includes storm drainage outside the building.
  2. Related Sections:
  3. Division 2 Section "Earthwork" for excavating, trenching and backfilling.
  4. Division3 Section "Cast-in-Place Concrete" for concrete structures.

1.2PERFORMANCE REQUIREMENTS

  1. Gravity-Flow, Nonpressure-Piping Pressure Ratings: At least equal to system test pressure.

1.3SUBMITTALS

  1. Shop Drawings: Include plans, elevations, details, and attachments for the following:
  2. Precast concrete manholes and other structures, including frames, covers, and grates.
  3. Cast-in-place concrete manholes, trench drains and other structures, including frames, covers, and grates.
  4. Stormceptor.
  5. Field Test Reports: Indicate and interpret test results for compliance with performance requirements.

1.4DELIVERY, STORAGE, AND HANDLING

  1. Do not store plastic structures, pipe, and fittings in direct sunlight.
  2. Protect pipe, pipe fittings, and seals from dirt and damage.
  3. Handle precast concrete manholes and other structures according to manufacturer's written rigging instructions.

1.5PROJECT CONDITIONS

  1. Site Information: Verify existing utility locations.
  2. Locate existing structures and piping to be closed and abandoned.
  3. Existing Utilities: Do not interrupt utilities serving facilities occupied by Owner or others unless permitted under the following conditions and then only after arranging to provide temporary utility services:
  4. Notify Owner not less than two days in advance of proposed utility interruptions.
  1. Do not proceed with utility interruptions without Owner written permission.

1.6SEQUENCING AND SCHEDULING

  1. Coordinate storm drainage system connections to existing on-site storm sewer.
  2. Coordinate with other utility work.

PART 2 - PRODUCTS

2.1PIPING MATERIALS

  1. Refer to Part3 "Piping Applications" Article for applications of pipe and fitting materials.

2.2PIPES AND FITTINGS

  1. Hub-and-Spigot, Cast-Iron Soil Pipe and Fittings: ASTMA74, gray iron, for gasketed joints.
  2. Gaskets: ASTMC564, rubber, compression type, thickness to match class of pipe.
  3. Ductile-Iron Sewer Pipe: ASTMA746, for push-on joints.
  4. Standard-Pattern, Ductile-Iron Fittings: AWWAC110, ductile or gray iron, for push-on joints.
  5. Gaskets: AWWAC111, rubber.
  6. PVC Sewer Pipe and Fittings: According to the following:
  7. PVC Sewer Pipe and Fittings, NPS15 and Smaller: ASTMD3034, SDR35, for gasketed joints.
  8. Gaskets: ASTMF477, elastomeric seals.
  9. Reinforced-Concrete Sewer Pipe and Fittings: ASTMC76, ClassIII, WallB, for gasketed joints.
  1. Gaskets: ASTMC443, rubber.
  1. Flap Valves: According to the following:
  1. Body: Cast Iron ASTM A126 Class B
  2. Seating: Bronze ASTMB21 C464 or ASTM B133 C110
  3. Flap: Cast Iron ASTM A126 Class B

2.3MANHOLES

  1. Normal-Traffic Precast Concrete Manholes: ASTMC478, precast, reinforced concrete, of depth indicated, with provision for rubber gasketed joints.
  2. Diameter: 48 inches minimum, unless otherwise indicated.
  3. Ballast: Increase thickness of precast concrete sections or add concrete to base section, as required to prevent flotation.
  4. Base Section: 6-inch minimum thickness for floor slab and 4-inch minimum thickness for walls and base riser section, and having separate base slab or base section with integral floor.
  5. Riser Sections: 4-inch minimum thickness, and lengths to provide depth indicated.
  6. Top Section: Eccentric-cone type, unless concentric-cone or flat-slab-top type is indicated. Top of cone of size that matches grade rings.
  7. Gaskets: ASTMC443, rubber.
  8. Grade Rings: Include two or three reinforced-concrete rings, of 6- to 9-inch total thickness, that match 24-inch-diameter frame and cover.
  9. Steps: Fiberglass, individual steps or ladder. Include width that allows worker to place both feet on one step and is designed to prevent lateral slippage off step. Cast or anchor into base, riser, and top section sidewalls with steps at 12- to 16-inch intervals. Omit steps for manholes less than 60 inches deep.
  10. Steps: ASTMC478, individual steps or ladder. Omit steps for manholes less than 60 inches deep.
  11. Pipe Connectors: ASTMC923, resilient, of size required, for each pipe connecting to base section.
  12. Manhole Frames and Covers: ASTMA536, Grade60-40-18, ductile-iron castings designed for heavy-duty service. Include 24-inch ID by 7- to 9-inch riser with 4-inch minimum width flange, and 26-inch-diameter cover. Include indented top design with lettering "STORM SEWER" cast into cover.
  13. Manufacturers: Unless otherwise directed by the Owner, provide products by one of the following:
  1. Neenah Foundry Company.
  2. East Jordan Iron Works.
  3. Approved substitute.

2.4CATCH BASINS

  1. Normal-Traffic, Precast Concrete Catch Basins: ASTMC478, precast, reinforced concrete, of depth indicated, with provision for rubber gasketed joints.
  2. Base Section: 6-inch minimum thickness for floor slab and 4-inch minimum thickness for walls and base riser section, and having separate base slab or base section with integral floor.
  3. Riser Sections: 4-inch minimum thickness, 48-inch diameter, and lengths to provide depth indicated.
  4. Top Section: Eccentric-cone type, unless concentric-cone or flat-slab-top type is indicated. Top of cone of size that matches grade rings.
  5. Gaskets: ASTMC443, rubber.
  6. Grade Rings: Include two or three reinforced-concrete rings, of 6- to 9-inch total thickness, that match 24-inch-diameter frame and grate.
  7. Steps: Fiberglass, individual steps or ladder. Include width that allows worker to place both feet on one step and is designed to prevent lateral slippage off step. Cast steps or anchor ladder into base, riser, and top section sidewalls at 12- to 16-inch intervals. Omit steps for catch basins less than 60 inches deep.
  8. Steps: ASTMC478, individual steps or ladder. Omit steps for catch basins less than 60 inches deep.
  9. Pipe Connectors: ASTMC923, resilient, of size required, for each pipe connecting to base section.
  10. Frames and Grates: ASTMA536, Grade60-40-18, ductile iron designed for heavy-duty service. Include 24-inch ID by 7- to 9-inch riser with 4-inch minimum width flange, and 26-inch-diameter flat grate with small square or short-slotted drainage openings.
  1. Grate Free Area: Approximately 50 percent, unless otherwise indicated.
  2. Grate Configuration: Provide the following or a comparable product by a manufacturer listed.
  1. Within Paved Areas: East Jordan Iron Works, V-3380.
  2. Outside Pavement or Aggregate Surfacing: East Jordan Iron Works, 1080 with Type 2 Behive.
  1. Manufacturers: Unless otherwise directed by the Owner, provide products by one of the following:
  1. Neenah Foundry Company.
  1. East Jordan Iron Works.
  2. Approved Substitute.

2.5CONCRETE

  1. General: Cast-in-place concrete according to ACI318, ACI350R, and the following:
  2. Cement: ASTMC150, TypeII.
  3. Fine Aggregate: ASTMC33, sand.
  4. Coarse Aggregate: ASTMC33, crushed gravel.
  5. Water: Potable.
  6. Portland Cement Design Mix: 4000 psi minimum, with 0.45 maximum water-cementitious ratio.
  7. Reinforcement Fabric: ASTMA185, steel, welded wire fabric, plain.
  8. Reinforcement Bars: ASTMA615/A615M, Grade60, deformed steel.
  9. Structure Channels and Benches: Factory or field formed from concrete. Portland cement design mix, 4000 psi minimum, with 0.45 maximum water-cementitious ratio.
  10. Include channels and benches in manholes.
  1. Channels: Concrete invert, formed to same width as connected piping, with height of vertical sides to three-fourths of pipe diameter. Form curved channels with smooth, uniform radius and slope.

1)Invert Slope: 1 percent through manhole

  1. Benches: Concrete, sloped to drain into channel.

1)Slope: 3/4 inch per foot.

2.6PROTECTIVE COATINGS

  1. Description: One- or two-coat, coal-tar epoxy; 15-mil minimum thickness, unless otherwise indicated; factory or field applied to the following surfaces:
  2. Concrete Manholes: On exterior surface.
  3. Catch Basins: On exterior surface.

2.7CLEANOUTS

  1. Description: One- or two-coat, coal-tar epoxy; 15-mil minimum thickness, unless otherwise indicated; factory or field applied to the following surfaces:
  2. Light Duty: In earth or grass foot-traffic areas.
  3. Medium Duty: In paved foot-traffic areas.
  4. Heavy Duty: In vehicle-traffic service areas.
  5. Extra-Heavy Duty: In roads.
  6. Sewer Pipe Fitting and Riser to Cleanout: ASTMA74, Service class, cast-iron soil pipe and fittings.

2.8STORMCEPTOR

  1. Products: Subject to compliance with requirements, provide products by one of the following:
  2. Model STC-6000, CSR Hydro Conduit, phone (817) 491-4321.
  3. Storm water management water quality device shall remove oil and sediment from storm water runoff and retain contaminants for removal. Device shall include a spill containment interceptor and separator.
  4. Device shall be capable of storing 610 cubic feet of sediment and 1025 gallons of floatable oil and grease.
  5. Concrete for precast spill containment interceptor and separator shall be in accordance with ASTM C478. Reinforcing steel shall be in accordance with Article 7,
    ASTM C478.
  6. Provide fiberglass disc type insert for precast spill containment interceptor and separator.
  7. The device shall include an internal bypass structure and be designed to minimize scour and resuspension of previously collected pollutants during intense storm events.
  8. Storage chamber shall be incorporate a means of inspecting sediment and oil and grease accumulation levels, as well as a means of removing the contaminants from the surface. Storage chamber shall be lined.

PART 3 - EXECUTION

3.1EARTHWORK

  1. Excavating, trenching, and backfilling are specified in Division2 Section "Earthwork."

3.2PIPING APPLICATIONS

  1. General: Include watertight, silttight, or soiltight joints, unless watertight or silttight joints are indicated.
  2. Refer to Part2 of this Section for detailed specifications for pipe and fitting products listed below. Use pipe, fittings, and joining methods according to applications indicated.
  3. Gravity-Flow Piping: Use the following:
  4. Pipe Sizes 4 inches to 15 inches: Hub-and-spigot, Extra-Heavy class, cast-iron soil pipe and fittings; gaskets; and gasketed joints.
  5. Pipe Sizes 4 inches to 15 inches: Ductile-iron sewer pipe; standard-pattern, ductile-iron fittings; gaskets; and gasketed joints.
  6. Pipe Sizes 12 inches to 36 inches: Reinforced-concrete sewer pipe and fittings, gaskets, and gasketed joints.

3.3SPECIAL PIPE COUPLING AND FITTING APPLICATIONS

  1. Special Pipe Couplings: Use where required to join piping and no other appropriate method is specified. Do not use instead of specified joining methods.
  2. Use the following pipe couplings for nonpressure applications:
  1. Sleeve type to join piping, of same size, or with small difference in OD.
  1. Increaser/reducer-pattern, sleeve type to join piping of different sizes.
  2. Bushing type to join piping of different sizes where annular space between smaller piping's OD and larger piping's ID permits installation.

3.4INSTALLATION, GENERAL

  1. General Locations and Arrangements: Drawing plans and details indicate general location and arrangement of underground storm drainage piping. Location and arrangement of piping layout take design considerations into account. Install piping as indicated, to extent practical.
  2. Install piping beginning at low point, true to grades and alignment indicated with unbroken continuity of invert. Place bell ends of piping facing upstream. Install gaskets, seals, sleeves, and couplings according to manufacturer's written instructions for use of lubricants, cements, and other installation requirements. Maintain swab or drag in line, and pull past each joint as it is completed.
  3. Use manholes for changes in direction, unless fittings are indicated. Use fittings for branch connections, unless direct tap into existing sewer is indicated.
  4. Use proper size increasers, reducers, and couplings where different sizes or materials of pipes and fittings are connected. Reducing size of piping in direction of flow is prohibited.
  5. Install gravity-flow piping and connect to building's storm drains, of sizes and in locations indicated. Terminate piping as indicated.
  6. Install piping pitched down in direction of flow, at minimum slope of 1 percent, unless otherwise indicated.
  7. Install piping with 36-inch minimum cover.
  8. Extend storm drainage piping and connect to building's storm drains, of sizes and in locations indicated. Terminate piping as indicated.
  9. Tunneling: Install pipe under streets or other obstructions that cannot be disturbed by tunneling, jacking, or a combination of both.

3.5PIPE JOINT CONSTRUCTION AND INSTALLATION

  1. General: Join and install pipe and fittings according to installations indicated.
  2. Hub-and-Spigot, Cast-Iron Soil Pipe and Fittings: With rubber gaskets according to CISPI's "Cast Iron Soil Pipe and Fittings Handbook." Use gaskets that match class of pipe and fittings.
  3. Ductile-Iron Sewer Pipe with Ductile-Iron Fittings: According to AWWAC600.
  4. Install with top surfaces of components, except piping, flush with finished surface.
  5. Concrete Pipe and Fittings: Install according to ACPA's "Concrete Pipe Installation Manual." Use the following seals:
  6. Round Pipe and Fittings: ASTMC443, rubber gaskets.
  7. System Piping Joints: Make joints using system manufacturer's couplings, unless otherwise indicated.
  8. Join piping made of different materials or dimensions with couplings made for this application. Use couplings that are compatible with and that fit both systems' materials and dimensions.

3.6MANHOLE INSTALLATION

  1. General: Install manholes, complete with appurtenances and accessories indicated.
  2. Form continuous concrete channels and benches between inlets and outlet.
  3. Set tops of frames and covers flush with finished surface of manholes that occur in pavements.
  4. Install precast concrete manhole sections with gaskets according to ASTMC891.

3.7CATCH-BASIN INSTALLATION

  1. Construct catch basins to sizes and shapes indicated.
  2. Set frames and grates to elevations indicated.

3.8CONCRETE PLACEMENT

  1. Place cast-in-place concrete according to ACI318 and ACI350R.

3.9CLEANOUT INSTALLATION

  1. Install cleanouts and riser extension from sewer pipe to cleanout at grade. Use cast-iron soil pipe fittings in sewer pipes at branches for cleanouts and cast-iron soil pipe for riser extensions to cleanouts. Install piping so cleanouts open in direction of flow in sewer pipe.
  2. Set cleanout frames and covers in earth in cast-in-place concrete block, 18 by 18 by 12 inches deep. Set with tops 1 inch above surrounding earth grade.
  3. Set cleanout frames and covers in concrete pavement with tops flush with pavement surface.

3.10STORMCEPTOR INSTALLATION

  1. Install device in accordance with manufacturer's recommendations. Install to the lines and grades indicated on Drawings. Bedding, backfill, and general installation requirements shall be in accordance with supplier recommendations and a professional engineer, based on site specific soil conditions subject to the approval of agency having jurisdiction for Environmental Quality.
  2. The inlet/outlet storm drain pipes shall be connected to the interceptor using
    ASTM C923 resilient connector such as Kor-n-Seal or equivalent.
  3. Performance Testing: Submit independent material testing laboratory reports showing hazardous material interception performance.

3.11TAP CONNECTIONS

  1. Make connections to existing piping and underground structures so finished Work complies as nearly as practical with requirements specified for new Work.
  2. Make branch connections from side into existing piping, 24” or larger, or to underground structures by cutting opening into existing unit large enough to allow 3 inches of concrete to be packed around entering connection. Cut end of connection pipe passing through pipe or structure wall to conform to shape of and be flush with inside wall, unless otherwise indicated. On outside of pipe or structure wall, encase entering connection in 6 inches of concrete for minimum length of 12 inches to provide additional support of collar from connection to undisturbed ground.
  3. Use concrete that will attain minimum 28-day compressive strength of 3000 psi, unless otherwise indicated.
  4. Use epoxy-bonding compound as interface between new and existing concrete and piping materials.
  5. Protect existing piping and structures to prevent concrete or debris from entering while making tap connections. Remove debris or other extraneous material that may accumulate.

3.12CLOSING ABANDONED STORM DRAINAGE SYSTEMS

  1. Abandoned Piping: Close open ends of abandoned underground piping indicated to remain in place. Include closures strong enough to withstand hydrostatic and earth pressures that may result after ends of abandoned piping have been closed. Use either procedure below:
  2. Close open ends of piping with at least 8-inch-thick, brick masonry bulkheads.
  3. Close open ends of piping with threaded metal caps, plastic plugs, or other acceptable methods suitable for size and type of material being closed. Do not use wood plugs.
  4. Abandoned Structures: Excavate around structure as required and use one procedure below:
  5. Remove structure and close open ends of remaining piping.
  6. Remove top of structure down to at least 36 inches below final grade. Fill to within 12 inches of top with stone, rubble, gravel, or compacted dirt. Fill to top with concrete.
  7. Backfill to grade according to Division2 Section "Earthwork."

3.13FIELD QUALITY CONTROL

  1. Clear interior of piping and structures of dirt and superfluous material as work progresses. Maintain swab or drag in piping, and pull past each joint as it is completed.
  2. In large, accessible piping, brushes and brooms may be used for cleaning.
  3. Place plug in end of incomplete piping at end of day and when work stops.
  4. Flush piping between manholes and other structures to remove collected debris, if required by authorities having jurisdiction.
  5. Inspect interior of piping to determine whether line displacement or other damage has occurred. Inspect after approximately 24 inches of backfill is in place, and again at completion of Project.
  6. Submit separate reports for each system inspection.
  7. Defects requiring correction include the following:
  1. Alignment: Less than full diameter of inside of pipe is visible between structures.
  1. Deflection: Flexible piping with deflection that prevents passage of ball or cylinder of size not less than 92.5 percent of piping diameter.
  2. Crushed, broken, cracked, or otherwise damaged piping.
  3. Infiltration: Water leakage into piping.
  4. Exfiltration: Water leakage from or around piping.
  5. Replace defective piping using new materials, and repeat inspections until defects are within allowances specified.
  6. Reinspect and repeat procedure until results are satisfactory.
  1. Test new piping systems, and parts of existing systems that have been altered, extended, or repaired, for leaks and defects.
  2. Do not enclose, cover, or put into service before inspection and approval.
  3. Test completed piping systems according to authorities having jurisdiction.
  4. Schedule tests and inspections by authorities having jurisdiction with at least 24 hours' advance notice.
  5. Submit separate reports for each test.
  6. Leaks and loss in test pressure constitute defects that must be repaired.
  7. Replace leaking piping using new materials, and repeat testing until leakage is within allowances specified.

END OF SECTION

STORM DRAINAGE02630 - 1 of 8