Standard Specifications For Private Sewer...

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BUILDING SERVICES DEPARTMENT 250 Frank H. Ogawa Plaza, 2nd Floor, Oakland, CA 94612 Inspection Services: 510.238.3443 FAX: 510.238.2263 Standard Specifications For Private Sewer Laterals APPROVED MATERIALS LIST City of Oakland 2012

Transcript of Standard Specifications For Private Sewer...

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BUILDING SERVICES DEPARTMENT250 Frank H. Ogawa Plaza, 2nd Floor, Oakland, CA 94612Inspection Services: 510.238.3443 FAX: 510.238.2263

Standard SpecificationsFor Private Sewer Laterals

APPROVED MATERIALS LIST

City of Oakland 2012

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• Approvedmaterials

• Inspections

• Housesewer4”-6”

• Couplings

• BeddingandBackfill

• GuidelinesforCSLMforVCpipe

• ASTMC12InstallingVC

• ASTMD2321Installationofundergroundthermoplasticpipe

• MainSewerTaps

• Standardcoverforupperandlowerlaterals

• GeoTexti1eFabric

• ReinforcedConcreteutilityboxes

• ConcreteCuringCompounds

• Readymixdesignsj

• MainsewerTaps

• WaterandSewerSeparation

• SewerOverflowDevicesandBackwatervavles

• Cleanouts

• LegislationforprotectedtreesandOverflowpreventiondevices

Table of ConTenTs

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1). APPROVED Extra strength Vitrified Clay

Standards ASTM-C700 with ASTM-C425 Bell and spigot polyurethane jointsPlain end ASTM-C700 with 4 band shear ring coupling (type Z) approved on private propertyLocal Manufacturer-Mission Clay

2) APPROVED Cast Iron Soil Pipe

Standards -ASTM A 74 for Hub and Spigot Cast Iron Soil pipe and ASTM A746 for fittings. NSF marking en-sures compliance with t relevant standards.No-Hub ~ ASTM 888 CISPI 301. NSF marking ensures compliance with relevant standards. 4 band shear cou-pling for underground installations. Above ground may be 2 banded shear coupling (CISPI 310 and NSF)MANUFACTURES- AB&I, Charlotte foundry, Tyler PipeCouplings - Anaco and Ideal

3) APPROVED PVC

SDR 26 IPS ASTM D3034 ASTM F477 bell and spigot jointsSchedule 40 ASTM Dl785 & ASTM D2655 (NO cellular core pipe is permitted) Solvent welded on private property only. Not permitted in public right of way or sewer easement.

4) APPROVED HDPE

SDR 17 DIPS with fused joints ASTM D3035 F714HDPE SHALL ONLY BE USED WHEN PIPE BURSTING AND TRENCHLESS SEWERS

5) APPROVED DUCTILE IRON PIPE

Class 52 thickness class-350 psi pressure class Cement or Ceramic epoxy lined (US PIPE PROTECTO 401) AWWA C 151 and AWWA C200Joints shall conform to AWWA C 111 for push on and Mechanical joints and AWWA C110 for flanged jointsLocal Manufacture-US Pipe and Foundry

6) APRROVED ABS PIPE

Schedule 40 ABS shall meet ASTM D2661 standards for solid core pipe and fittings.Solvent cement shall meet ASTM 2235. (NO cellular core pipe is permitted) Solventwelded on private property only. Not permitted on sewer in public right of way.

The use of cellular core ABS or PVC pipe shall be rejected.

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Inspections: All piping shall be bedded and haunched to the spring line of the pipe for inspection. All

markings and ASTM makings shall be visible on top of pipe to verify correct standards.

HOUSE SEWERS 4”-6” Material Types: pipe

1) Cast Iron Service weight Bell and Spigot or No Hub CI installed with 4 band shear couplings below ground. Above ground installation of NO HUB CI may be made with approved 2 band shear couplings. All CI shall be Poly encased in Public Right of Way or sewer easement.

2) PVC SDR 26 IPS bell and spigot solid wall and Schedule 40 PVC, solvent weld (on private property only). The use of ABS to PVC transition GLUE prohibited. Use approved 4 band shear coupling .

3) VCP Extra Heavy with Bell and Spigot or plain end with shear ring couplings.

4) DIP class 52 thickness, 350 psi class. Bell and Spigot, mechanical or flanged joints. Poly encased in Public Right of way or sewer easement.

5) HDPE SDR 17 DIPS with fused joints (allowed for trench-less only).

6) ABS Schedule 40 ABS, solvent weld (on private property only). The use of ABS to PVC transition GLUE is Prohibited. Use approved 4 band shear coupling.

ALL piping shall be installed without stress and to approved standards.

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COUPLINGS

All underground transitions to dissimilar materials shall be made with 4 band u shear couplings. Above ground transitions may be made with approved 2 band shear couplings.

APPrOved COUPLINGS fOr TrANSITIONS TO dISSImILAr mATerIALS & UNderGrOUNd NO HUB INSTALLATIONS:

Husky 4 clamp shielded coupling (80 in-lb)Anaco No-Hub 4 clamp shielded coupling (60 in-lb)fernco No-Hub 4 clamp shielded coupling, Silver (60 in-lb), Yellow and Green (80 inlb)fernco 4 clamp shielded coupling Strong back RC Couplings, (60 in-lb)fernco 50004 clamp shielded coupling Series RC Coupling, (60 in-lb)mission adjustable 4 clamp shielded repair coupling coupling.

APPrOved ABOve GrOUNd (60 in-lb) NO-HUB TO NO-HUB COUPLINGS:

Ideal 2 banded shielded coupling, CISPI 310 and NSFAnaco 2 banded shielded coupling, CISPI 310 and NSF (shown below)

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CouplingsMaterial Type(s): Banded Rubber Couplings

Description: For repairs, alterations and house sewers with connections of dissimilar materials. Banded rubber couplings shall have four (4) clamps and metal shear bands.

Manufacturer: Manufacturers included but are not limited to:

1. Fernco® 2. Mission® 3. Husky®4. Anaco®

Note: Check with Inspector prior to purchase of material to insure proper coupling is selected for the different pipe types encountered.

Mission® Band Seal Joints® Calder Coupling

Fernco® Proflex Coupling Anaco 2-Banded

(60 in-lb)

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Husky® 4 Clamp Coupling Fernco® Stainless Steel Shear Rings

Fernco® Strong Back RC Couplings Fernco® 5000 Series RC Couplings

Fernco® No-Hub Couplings Mission® Adjustable Repair Coupling Silver (60 in-lb)

Yellow & Green (80 in-lb)

Anaco No Hub (60 in-lb)

(60 in-lb) (80 in-lb)

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Friatec® FrialenElectrofusion Coupling

Approved High Density Polyethylene Couplings

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Standard cover requirements for upper and lower laterals

Upper laterals are collection to the building drain at the structure and do not cross intothe Public right of way or sewer easements’. The lower lateral is the portion of the sewerthat is installed in the Public right of way. Only contractors with a C 42 sewer license orA contractor is permitted to work in the right of way.

Pipe cover limitation tablesFirst table is for upper laterals on private property without loading. Plain end VCis approved with shear ring couplings on upper laterals. For upper laterals underdriveway, use Lower lateral table

* ALL DIP AND CI SHALL BE POLY ENCASED IN PUBLIC EASEMENTStandard enclosed

All NO HUB Underground Couplings shall be Heavy Duty shear with 4 bands.

UPPER LATERAL TABLE

Size MaterialMin.

depthMax. depth

4”– 6” ABS Schedule 40 Solid Core 2.5 244”– 6” VC C700 Sewer pipe 2.5 304”– 6” CI SVandNohub 1.5 304”– 6” DI Class 52 1 304”– 6” PVC SDR26 IPS 2.5 244”– 6” HPDE SDR 17 DIPS 2.5 244”– 6” PVC Schedule 40 Solid Core 2.5 24

LOWER LATERAL TABLE

Size MaterialMin.

depthMax. depth

4”– 6” VC C700 Bell and spigot only 5 304”– 6” CI* Service weight and No Hub 4 304”– 6” DI* Class 52 1 304”– 6” PVC SDR26 IPS 5 244”– 6” HDPE SDR 17 DIPS 5 24

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Reinforced Concrete Utility Boxes Material Type(s): Utility boxes for traffic and non-traffic areas ITEM DESCRIPTION PRODUCT

12" x 12" Drain Box Christy® V12 Box 10-3/8" I.D. x 12" Valve Box Christy® or Jensen® G5 Traffic ValveTraffic Area Cast Iron Grate (3/8" Max Spacing) H/20 Loading

Christy® V12-71W Welded Grate

8" I.D. x 12" Valve Box Christy® or Jensen® F8 Box 8-1/2" I.D. x 11-3/4" Drain Box Christy® V1 Drain Box 10-5/8" I.D. x 17-1/4" Drain Box Christy® V9 Drain Box

Non-Traffic Area

Cast Iron Grate 3/4" Max SpacingChristy® V1-71C Grate and V9-71C Grate

Christy® V12 Box Christy® G5 Box Christy® F8 Box Christy® V12-71W Christy® K-6004 Grate Christy® V1-71C Welded Grate (Special Order) Grate

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TAPS

Material types: Taps

The portion of the lower lateral in the right-of-way or public easement shall be installed at a 90-degree angle to the sewer main with a wye-connection oriented in the direction of flow in the main. The wye-connection shall be installed a minimum of 3 feet from a manhole, and 5 feet from a lamp-hole (sewer main clean-out).

The minimum horizontal distances between adjacent sewer lateral connections shall be: a) Laterals on the same side of the street/sewer 10(ten) feet b) Laterals on the opposiste side of the street/sewer 5 (five) feet

Tap maTerials for The corresponding main sewerACP Fowler saddle

RCP Insert a wye

CIP, DIP Fowler saddle Sealtite type “S” saddle with 4 band coupling

HDPE Insert a wye

VCP Insert a wye

All other taps shall be performed by Tap-tite or Roto rooter.Where possible, taps shall be installed above the springline of pipe at an angle not to exceed 45 degrees from the horizontal.

Effort shall be made to install tap fitting and saddles with a 45 degree (wye) configuration to facilitate continuous flow velocities into the main. Straight taps can cause hydraulic jump which can cause solids to drop off and accumulate in the main.

TRANSVERSE SECTION

SADDLE CONNECTION DETAIL CONNECTION AT MAIN

45˚min.

Coupling

Saddle

1/8 bend

Sewer main

45˚max.

Min. slope 2% without

special approval

Radial connection

Lower lateral

8 in. main

Notes:1. When a lateral sewer is installed in advance of the building sewer, it shall be terminated with a cap or

plug 5’ past the property line, easement line or last improvement and the Contractor shall mark the location of the capped/plugged end with a 2x4 pressure treated stake painted green.

2. Refer to section 15.02205 for bedding and backfill requirements.3. See note 2 on DWG-25 for cover requirements

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Criteria For The Separation Of Water Main & Gravity Sanitary SewersDOHS Memo # 2003-201

Parallel Construction

6 ft.

1

2

Special pipe

Special pipe

No joints

Special permission

5 ft.6 in.

Grade Grade

6 in.5 ft.4 ft.4 ft.

1 ft.

Water Main

3 ft. 1 ft.

B P

P

P

C

D

A

Crossing

Plan View

SiDe View

ZOne “a”: Sewer lines not permitted without approval of AHJ (Authority Having Jurisdiction)

ZOne “B”: Permitted Materials: • VC pipe with compression joints • PVC pipe with rubber ring joints (ASTM 3034) • C1 or 01 pipe with compo joints • Rc pressure pipe with compo joints • HDPE pipe with fusion welded Joints (AWWA C906-99) • Spirally-reinforced HDPE pipe with gasketed joints

(ASTM F-984)

ZOne “C”: Permitted Materials: • DI Pipe with hot dip bituminous coating • C-900 PVC (DR 14). Continuous section centered over pipe being crossed • RC pressure pipe. Continuous section centered over

pipe being crossed • Any sewer pipe within a continuous sleeve • HDPE pipe with fusion welded joints (AWWA C906-99)

ZOne “D”: Permitted Materials: • DI pipe with hot dip bituminous coating & mechanical joints • HDPE pipe with fusion-welded joints (AWWA C906-99) • C-900 PVC (DR 14) continuous section centered over pipe being crossed • RC pressure pipe continuous section centered over pipe being crossed • Any sewer pipe within a continuous sleeve

ZOne “P”: nOT PeRMiTTeD

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EBMUD Private Sewer Lateral Ordinance

How to Prevent Backup from City Main & Protect Your Home

Backwater Device

Drainage piping serving fixtures on a floor, where the floor level is located BELOW the elevation of the next upstream manhole cover of the public/private sewer system, shall be protected from the backflow of sewage by installing anapproved Backwater Valve. Section 710.1 UPC

☑ NOTE: Fixtures located on a floor, where the floor level is located ABOVE the next uphill manhole cover elevation shall not discharge through a Backwater Valve.

Public sewerBuilding sewer

To public sewer

Second floor drain bypassesbackwater valve

Manhole cover

Box & cover containing backwater valve

2nd floor ABOVE manhole

1st floor BELOW manhole

To building

Backwater device

Cleanout

Finish grade

No water in building sewer,flap opens by gravity, rests against ledge

Discharge from building into building sewer, flaw swings upward, letting discharge flow through

Sewage backflow into building sewer, is stopped by flap directing sewage flow into device, building is protected

Illustrations ©2012 Code CheckBUILDING SERVICES DEPARTMENT250 Frank H. Ogawa Plaza, 2nd Floor, Oakland, CA 94612Inspection Services: 510.238.3443 FAX: 510.238.2263

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Illustrations ©2012 Code Check

Finish grade

Finish grade

3 in. min.

2 ft. max. to bldg.

2 ft. max. to bldg.

6 in. min.

6 in. min.

6 in. min.

4 in.min.

4 in.min.

3 in.min.

6 in. min. (typical)

Remove standard cleanout plug

Standard cleanout 4 in. min.

Backwater valve

Flap prevents water entry

Backwater valve

Sewer overflow device

Cast in place concrete

Standard cleanout 4 in. min.

Sewer overflow device

Lowest floor in structure

Lowest floor in structure

Pop-up ball to elimate emission of odors & access of rodentssee lower left drawing

BUILDING SERVICES DEPARTMENT250 Frank H. Ogawa Plaza, 2nd Floor, Oakland, CA 94612Inspection Services: 510.238.3443 FAX: 510.238.2263

Things to Consider when Replacing Sewer Laterals in

Multistory Dwellings

When owners of a multistory dwelling are required to replace their private sewer lateral, it may be determined that the lowest floor is below the upstream manhole cover. This condition can cause flooding of the building if the sewer main has a blockage.

Current code requires that only fixtures below the manhole cover drain through the backwater valve. This prevents occupants on upper floors from flooding the lower floor accidently. Since this would require an expensive re-plumbing of existing buildings, the city will require the use of a sewer overflow device in addition to a backwater valve to prevent both a backup from the main City sewer and the accidental flooding of the lower floor by owners unaware that there is a blockage in the sewer. It will also protect the building in case of blockages in their own private sewer lateral

A sewer overflow device per the approved materials list is required on ALL side sewer connections and repairs and/or alternations on existing side sewers.

The specific location of the sewer overflow device shall be determined by the contractor and the property owner such that the top location of the overflow device is a minimum of 6 inches below the lowest finished floor elevation of the connected building.

3

3

1

2

2

1

1

2

3

Ball seated

Water pressure raises ball, water escapes through bell

EBMUD Private Sewer Lateral Ordinance

How to Prevent Backup from City Main & Protect Your Home

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Overflow Protection Devices Material Type(s): Overflow Protection Devices (OPD) Description: Overflow protection devices prevent sewage from entering homes

and businesses and reroute the spill outside the building. Manufacturer:

ABS PVC

MANUFACTURER PRODUCT NAME

Mainline Backflow Products Adapt-a-valve Inspection Chamber with Test-Eze Gate Feature Extendable

Backwater Valve Rector Seal Clean Check Backwater Valve

"Mushroom" Genplex Kelly Backwater Device (No-Hub & IPS)

Sewer Popper™ Stephens Corp Sewer Popper™ Model S62-304

Relief Cap Unlimited Home Solutions LLC (www.unlimitedhomesolutions.com) Sewer Relief Cap

Extendable Backwater Valves

“Mushroom” OPD

Sewer Popper™ OPD Sewer Relief Cap

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