[SUBMITTAL INFORMATION]

DESIGN A/E NOTE - GUIDE SPECIFICATION CONVENTIONS

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SECTION 333000

SANITARY SEWERS

(Edited from DeCA June 2017 Design Criteria)

PART 1 - GENERAL

1.1  SUMMARY

Section Includes: Construction of sanitary sewer and related items outside the limits of the building:

  1. Pipe and fittings.
  2. Nonpressure and pressure couplings.
  3. Expansion joints and deflection fittings.
  4. Backwater valves.
  5. Cleanouts.
  6. Encasement for piping.
  7. Manholes.

1.2  DEFINITIONS

  1. PVC: Polyvinyl chloride plastic.
  2. DIP: Ductile Iron Sewer Pipe.

1.3  PERFORMANCE REQUIREMENTS

  1. Gravity-Flow, Non-pressure Piping.

1.4  SUBMITTALS

  1. Product Data:
  2. Piping, Fittings, Gaskets, Couplings, Clean outs and Identification Materials.
  3. Shop Drawings:
  4. Include plans, elevations, details, and attachments for the following:
  5. Precast and cast-in-place concrete manholes, including plan, elevation, sections, details and frames and covers.

C.  Design Mix Reports and Calculations.

  1. Field Test Reports:
  2. Indicate and interpret test results for compliance with performance requirements.
  3. Submittal List

Reference Submittal Item Quantity Action

1.4A Product Data X R

1.4B Shop Drawings X R

1.4C Design Mix Reports and Calculations X R

1.4D Field Test Reports X I

X Submit quantity specified in Division 01 Section Administrative Requirements.

R Review each submittal, mark to indicate action taken, and return.

I Submittal is for information or record purposes only. No action will be taken.

1.5  DELIVERY, STORAGE, AND HANDLING

Retain first paragraph below for ABS, PVC, or fiberglass piping.

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

1.6  PROJECT CONDITIONS

Retain this article if interruption of existing sanitary sewerage service is required.

  1. Interruption of Existing Sanitary Sewerage Service: Do not interrupt service to facilities occupied by Government or others unless permitted under the following conditions and then only after arranging to provide temporary service according to requirements indicated:
  2. Notify Contracting Officer no fewer than five days in advance of proposed interruption of service.
  3. Do not proceed with interruption of service without Contracting Officer’s written permission.

PART 2 - PRODUCTS

2.1  DUCTILE IRON, GRAVITY SEWER PIPE AND FITTINGS

Piping in this article should be available in NPS3 to NPS64 (DN80 to DN1600), but no manufacturer of NPS3 or NPS4 (DN80 or DN100) was located. Joints are gasketed type.

  1. Pipe: ASTMA746, for push-on joints.

Fittings in first paragraph below should be available in NPS3 to NPS48 (DN80 to DN1200).

  1. Standard Fittings: AWWAC110, ductile or gray iron, for push-on joints.

Fittings in first paragraph below should be available in NPS3 to NPS24 (DN80 to DN600) and in NPS54 to NPS64 (DN1350 to DN1600).

  1. Compact Fittings: AWWAC153, ductile iron, for push-on joints.
  2. Gaskets: AWWAC111, rubber.

2.2  DUCTILE IRON, PRESSURE PIPE AND FITTINGS

  1. Push-on Joint Piping:

Pipe in first subparagraph below should be available in NPS3 to NPS64 (DN80 to DN1600), but no manufacturer of NPS3 (DN80) was located. Joints are gasketed type.

  1. Pipe: AWWAC151.

Fittings in first subparagraph below are available in NPS3 to NPS48 (DN80 to DN1200).

  1. Standard Fittings: AWWAC110, ductile or gray iron.

Fittings in first subparagraph below are available in NPS3 to NPS64 (DN80 to DN1600).

  1. Compact Fittings: AWWAC153.
  2. Gaskets: AWWAC111, rubber, of shape matching pipe and fittings.
  3. Mechanical Joint Piping:

Pipe in first subparagraph below should be available in NPS3 to NPS64 (DN80 to DN1600). Joints are gasketed type.

  1. Pipe: AWWAC151, with bolt holes in bell.

Fittings in first subparagraph below are available in NPS3 to NPS48 (DN80 to DN1200).

  1. Standard Fittings: AWWAC110, ductile or gray iron, with bolt holes in bell.

Fittings in first subparagraph below are available in NPS3 to NPS64 (DN80 to DN1600).

  1. Compact Fittings: AWWAC153, with bolt holes in bells.
  2. Glands: Cast or ductile iron; with bolt holes and high strength, cast iron or high strength, low alloy steel bolts and nuts.
  3. Gaskets: AWWAC111, rubber, of shape matching pipe, fittings, and glands.

2.3  PVC PIPE AND FITTINGS

Piping in first paragraph below is available in NPS1-1/2 to NPS12 (DN40 to DN300). Joints are solvent-cemented type.

Piping in first paragraph below is available in four SDRs and in NPS4 to NPS15 (DN100 to DN375). Joints are gasketed type.

  1. PVC TypePSM Sewer Piping:
  2. Pipe: ASTMD3034, SDR26, PVC TypePSM sewer pipe with bell-and-spigot ends for gasketed joints.
  3. Fittings: ASTMD3034, PVC with bell ends.
  4. Gaskets: ASTMF477, elastomeric seals.

Piping in first paragraph below is available in two thicknesses and in NPS18 to NPS36 (DN450 to DN900). Joints are gasketed type. Gaskets are furnished with the pipe and fittings.

Piping in first paragraph below is available in NPS4 to NPS12 (DN100 to DN300). Joints are gasketed type.

  1. PVC Pressure Piping:
  2. Pipe: AWWAC900, DR18 PVC pipe with bell-and-spigot ends for gasketed joints.
  3. Fittings: AWWAC900, DR18 PVC pipe with bell ends.
  4. Gaskets: ASTMF477, elastomeric seals.

Piping in paragraph below is available in NPS1/8 to NPS24 (DN6 to DN600). Joints are solvent-cemented type.

2.4  NONPRESSURE TYPE TRANSITION COUPLINGS

  1. Comply with ASTMC1173, elastomeric, sleeve type, reducing or transition coupling, for joining underground nonpressure piping. Include ends of same sizes as piping to be joined and corrosion resistant metal tension band and tightening mechanism on each end.
  2. Sleeve Materials:
  3. For Plastic Pipes: ASTMF477, elastomeric seal or ASTMD5926, PVC.
  4. For Dissimilar Pipes: ASTMD5926, PVC or other material compatible with pipe materials being joined.
  5. Unshielded, Flexible Couplings:

etain one of first two subparagraphs and list of manufacturers below.

  1. Description: Elastomeric sleeve withstainless steel shear ring and corrosion-resistant metal tension band and tightening mechanism on each end.
  2. Shielded, Flexible Couplings:

Retain one of first two subparagraphs and list of manufacturers below.

  1. Description: ASTMC1460, elastomeric or rubber sleeve with full length, corrosion-resistant outer shield and corrosion-resistant metal tension band and tightening mechanism on each end.
  2. Ring Type, Flexible Couplings:

Retain one of first two subparagraphs and list of manufacturers below.

  1. Description: Elastomeric compression seal with dimensions to fit inside bell of larger pipe and for spigot of smaller pipe to fit inside ring.

Coupling in paragraph below should not be used for liquids at temperatures below 0 degF (minus 18 degC) or above 130 degF (54 degC).

  1. Nonpressure Type, Rigid Couplings:

Retain one of first two subparagraphs and list of manufacturers below.

  1. Description: ASTMC1461, sleeve-type, reducing- or transition-type mechanical coupling, molded from ASTMC1440, TPE material; with corrosion-resistant metal tension band and tightening mechanism on each end.

2.5  PRESSURE TYPE PIPE COUPLINGS

Retain one of first two paragraphs and list of manufacturers below.

  1. Tubular Sleeve Couplings: AWWAC219, with center sleeve, gaskets, end rings, and bolt fasteners.
  2. Metal, bolted, sleeve-type, reducing or transition coupling, for joining underground pressure piping. Include 200 psig minimum pressure rating and ends of same sizes as piping to be joined.
  3. Center Sleeve Material: Manufacturer's standard.
  4. Gasket Material: Natural or synthetic rubber.
  5. Metal Component Finish: Corrosion resistant coating or material.

2.6  EXPANSION JOINTS AND DEFLECTION FITTINGS

Joints and fittings in this article are for buried, ductile-iron pressure pipe and other pipe with same diameters.

Expansion joints in first paragraph below provide both offset and expansion. Indicate minimum required offset and expansion data on Drawings.

  1. Ductile Iron, Flexible Expansion Joints:

Retain one of first two subparagraphs and list of manufacturers below.

  1. Description: Compound fitting with combination of flanged and mechanical joint ends complying with AWWAC110 or AWWAC153. Include two gasketed ball joint sections and one or more gasketed sleeve sections, rated for 250 psig minimum working pressure and for offset and expansion indicated.

Expansion joints in first paragraph below provide linear expansion only.

  1. Ductile Iron Expansion Joints:

Retain one of first two subparagraphs and list of manufacturers below.

  1. Description: Three-piece assembly of telescoping sleeve with gaskets and restrained type, ductile iron, bell-and-spigot end sections complying with AWWAC110 or AWWAC153. Include rating for 250 psig minimum working pressure and for expansion indicated.

Fittings in paragraph below provide deflection only.

  1. Ductile Iron Deflection Fittings:

Retain one of first two subparagraphs and list of manufacturers below.

  1. Description: Compound coupling fitting with ball joint, flexing section, gaskets, and restrained joint ends complying with AWWAC110 or AWWAC153. Include rating for 250 psig minimum working pressure and for up to 15 degrees of deflection.

2.7  BACKWATER VALVES

  1. Cast Iron Backwater Valves:

Retain one of first two subparagraphs and list of manufacturers below.

  1. Description: ASMEA112.14.1, gray iron body and bolted cover, with bronze seat.

Retain one or more of three subparagraphs below. If more than one type is required, show location of each on Drawings.

  1. Horizontal type; with swing check valve and hub-and-spigot ends.
  2. Combination horizontal and manual gate valve type; with swing check valve, integral gate valve, and hub-and-spigot ends.
  3. Terminal type; with bronze seat, swing check valve, and hub inlet.
  4. PVC Backwater Valves:

Retain one of first two subparagraphs and list of manufacturers below.

  1. Description: Horizontal type; with PVC body, PVC removable cover, and PVC swing check valve.

2.8  CLEANOUTS

  1. Cast Iron Cleanouts:

Retain one of first two subparagraphs and list of manufacturers below.

  1. Description: ASMEA112.36.2M, round, gray iron housing with clamping device and round, secured, scoriated, gray iron cover. Include gray iron ferrule with inside calk or spigot connection and countersunk, tapered thread, brass closure plug.

Retain one or more options in first subparagraph below. If more than one loading classification is required, show location of each on Drawings.

  1. Top Loading Classification(s):
  2. Medium Duty: In landscaped and paved foot-traffic areas.
  3. Heavy Duty: In vehicle traffic service areas.

2.9  ENCASEMENT FOR PIPING

  1. Standard: ASTMA674 or AWWAC105.
  2. Material: Linear low density polyethylene film of 0.008 inch or high density, cross-laminated polyethylene film of 0.004 inch minimum thickness.
  3. Form: Sheet or tube.
  4. Color: Black or natural.

2.10  MANHOLES

  1. Normal Traffic Precast Concrete Manholes:
  2. ASTMC478, precast, reinforced concrete, of depth indicated, with provision for rubber gasketed joints.
  3. Diameter: 48 inches minimum, unless otherwise indicated.
  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. 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. Pipe Connectors: ASTMC923, resilient, of size required, for each pipe connecting to base section.
  11. Cast-in-Place Concrete Manholes:
  12. Construct of reinforced concrete bottom, walls, and top; designed according to ASTM C 890 for A-16 (AASHTOHS20-44), heavy traffic, structural loading; of depth, shape, dimensions, and appurtenances indicated.
  13. Grade Rings: Include two reinforced concrete rings, of 6 to 9 inch total thickness, to match 24 inch diameter of manhole frame and cover.
  14. 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 of step. Cast or anchor steps into sidewalls at 12 to 16 inch intervals. Omit steps if total depth from floor of manhole to finished grade is less than 60 inches.
  15. Manhole Frames and Covers:
  16. 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 "SANITARY SEWER" cast into cover.

2.11  CONCRETE