Attachment 2 Standard Specifications.pdf

Portland Area Indian Health Service Revised 05/2022

Excavation, Trenching, and Backfill 02315 - 1

SECTION 02315 – EXCAVATION, TRENCHING AND BACKFILL

PART 1 - GENERAL

SUMMARY

This section includes excavation, trenching and backfill necessary for the construction of the facilities as indicated on the plans including, but not limited to:

water mains and service lines, sewer mains and service lines, concrete manholes, septic tanks, and other structures.

RELATED WORK

Section 02316 – Rock Excavation

Section 2320 – Waste Stabilization Pond

Section 2400 – Boring, Jacking & Directional Drilling

Section 02510 – Water Distribution

Section 02511 – Water Service Lines

Section 02512 – Individual Household Water Systems

Section 02530 – Sanitary Sewerage

Section 02531 – Sanitary Sewer Service Lines

Section 02532 – Sanitary Sewer Manholes

Section 02534 – Effluent Lift Station w/ Pump Tank

Section 02536 – Effluent Force Main

Section 02540 – Concrete Septic Tank and Piping

Section 02545 – Drainfields and Gravelless Chamber Systems

Section 02547 – Sand Filters

Section 02548 – Individual Lagoon System

Section 02705 – Road Restoration

Section 02920 – Topsoiling, Seeding, and Mulching

Excavation, Trenching, and Backfill 02315 - 2

REFERENCES

Manual on Uniform Traffic Control Devices

ASTM D698 – Test Methods for Moisture Density Relations of Soils and Soil- Aggregate Mixtures Using 5.5 lb. Rammer and 12-in. Drop [Standard Proctor Test]

ASTM D2321 – Underground Installation of Flexible Thermoplastic Sewer Pipe

ASTM D2487 – Classification of Soils for Engineering Purposes [Unified Soil Classification System]

ODOT Oregon Standard Specifications of Construction – 2015, Section 00405 Trench Excavation, Bedding, and Backfill

SUBMITTALS

Imported Bedding Sieve Analysis

Polystyrene Insulation

Compaction Method

Detectable Warning Tape

DEFINITIONS

Boulder Excavation – The removal, without drilling, blasting, or splitting, of masses of rock having one or more dimensions of 3 feet or greater.

Rock Excavation – Excavation of solid ledge rock that requires its removal by drilling and blasting, wedging, sledging, barring, or breaking up with power-operated tools.

Pipe Bedding – Furnishing, placing, and compacting specified materials on the trench foundation so as to uniformly support the barrel of the pipe.

Pipe Zone – The area from the top of the bedding to a point 8 inches, minimum, above the top outside of the pipe barrel for the full width of the trench.

Flexible Pipe – For the purpose of these Specifications, potable water pipes and pipes constructed of corrugated metal, PVC, and polyethylene are considered flexible pipes.

Rigid Pipe – For the purpose of these specifications, pipes constructed of concrete and ductile iron are considered rigid pipes.

Soil Materials as summarized in the table below and defined in ASTM D2321 and

ASTM D2487.

Excavation, Trenching, and Backfill 02315 - 3

PART 2 - PRODUCTS

BEDDING, HAUNCHING AND INITIAL BACKFILL MATERIAL

Native material if acceptable to project manager.

If groundwater is present in the bedding zone, use ¾” – 0 aggregate bedding.

If groundwater is not present, furnish one of the following materials for bedding the pipe:

3/8” – 0 PCC fine aggregate Commercially available ¾” – 0 aggregate No. 10

Imported Bedding: Consists of sand, sandy gravel, or fine gravel having a maximum size of ¾-inch and a maximum Plasticity Index of 6.

INSULATION

Rigid extruded polystyrene insulation board, 2 inches thick, having a minimum compressive strength of 25 psi. . Dow Chemical Styrofoam, or approved equal with a minimum R-value of 4.5 per inch.

Width:

4 feet for mains up to 12 inch (nominal diameter).

3 feet for mains and service lines up to 6-inches (nominal diameter).

WARNING TAPE

Detectable 3 inches wide.

Printed with “Caution Buried Water Line Below” for water mains and service lines.

Printed with “Caution Buried Sewer Line Below” for sewer mains, sewer force mains, and service lines.

PART 3 - EXECUTION

GENERAL

Trenching and excavation work shall be done in accordance with proper emphasis on safety as determined by the Contractor to conform to recommended safety standards such as OSHA 1910 and 1926.

A Competent Person, as defined by OSHA 1926, shall be on site at all times when excavation work is being completed.

Provide suitable sheeting, shoring, and bracing as required in conformance with OSHA regulations.

Excavation, Trenching, and Backfill 02315 - 4

In accordance with the contract, obtain all permits from appropriate road agency for construction within road right of way.

Repair damage resulting from settlement, slides, cave-ins, water pressure, and other causes.

Provide adequate signs, barricades, fences and amber lights and take all necessary precautions to protect the work and the safety of the public in all construction areas.

Placement of construction signs and barricades shall conform to the “Manual on Uniform Traffic Control Devices.”

Protect barricades and obstructions at night by amber signal lights that burn from sunset to sunrise. Barricades shall also be of substantial construction, painted white or with reflective paint to increase their visibility at night.

Perform work without obstruction to traffic or inconvenience to the general public and the residents in the vicinity of the work.

The maximum open trench allowed during the day at each location shall not exceed 200 feet, with no open trench allowed overnight unless specifically approved.

Road Crossing

Comply with all construction and material requirements of roadway authorities having jurisdiction.

Maintain one lane of traffic open at all times.

Cleared trees, brush, or rocks prior to or during construction is considered incidental to excavation work.

EXCAVATION

Remove trees and stumps from excavation and site.

Remove and stockpile existing topsoil.

Install facilities as staked, centered in excavation, unless otherwise approved by project manager.

Maintain surface drainage away from trenching or excavation.

Remove unsuitable foundation materials from excavation as shown on the plans or as authorized by the project manager.

Maintain a minimum 1-foot clearance between outer surface of structure being installed and wall of excavation.

Rock encountered shall be classified, excavated, and measured in accordance with Section 02316.

Excavation, Trenching, and Backfill 02315 - 5

TRENCHING

Bottom width:

No less than 12 inches or more than 24 inches wider than the outside diameter of the pipe.

Where a chain or wheel trencher is approved for use in a rural area, the trench width shall be 4 to 6 inches greater than the outside diameter of the pipe.

Depth: Provide minimum cover as specified, or depths shown on plans.

BEDDING

If existing soil cannot provide uniform, stable bearing support, over-excavate 6 inches below bottom of pipe or structure and provide imported bedding material as directed by the project manager.

If unsuitable soil is encountered a price for imported bedding material will be negotiated.

Unauthorized over excavation shall be backfilled with acceptable bedding material at the Contractor’s expense.

HAUNCHING AND INITIAL BACKFILL

General.

Provide complete and uniform bearing and support for the pipe, including allowance for bell holes, or structure.

Work material under and around the pipe to ensure full pipe support.

Prevent movement of the pipe during placement of material.

Avoid contact between the pipe and mechanical compaction equipment.

Where a trencher is approved, backfill the trench from surface with selected material, free from large clods and all stones larger than 3 inches.

No frozen clods, saturated, foreign, or organic materials will be allowed.

Hand compact in 6-inch lifts from the bottom of the trench to 12 inches above the pipe crown.

BACKFILL & COMPACTION

All buried material shall be inspected by technical representative prior to backfilling.

Backfill remainder of excavation with native material, free from large clods, stones 8 inches or larger, organic material or frost chunks.

All backfill shall be compacted in the specified lifts utilizing mechanical equipment designed for compaction. Compaction methods utilizing mechanical equipment not designed for compaction will not be approved.

Excavation, Trenching, and Backfill 02315 - 6

All methods of compaction shall be approved prior to construction.

Compact in 6-inch lifts to a density not less than the density of the surrounding undisturbed soil or not less than 90% of the maximum dry density, determined by

ASTM D698.

Judgment on compaction will be determine through the use of a nuclear density gauge (comparing the unit weight of the compacted soil to the unit weight of the undisturbed soil) and/or by inspection of the Contractor’s compaction effort.

In cases where the Contractor performs unacceptable methods of compaction, the work on the project will cease until an acceptable method of compaction has been approved. The project manager has the right to delay work until soil samples along the project alignment are taken for the purpose of developing a proctor for testing the compaction of the soil backfilled in the trench.

Compact with mechanical tamper, after initial backfill, to a density not less than 95% of the maximum dry density, determined by ASTM D698 for the entire depth of the trench through a roadway or driveway.

Conform to Section 02705 for all other requirements when restoring roadways.

Backfill and compact around manholes, valve boxes, and other appurtenances in 6-inch lifts.

Compact with a mechanical tamper to a density not less than 90% of the maximum dry density, determined by ASTM D698.

Backfill around septic tanks in 12-inch lifts.

Compact in a manner that will not produce undue strain on the tank.

Repair any trenches improperly backfilled or where settlement occurs, then refill and compact.

Restore surface to the required grade and compaction. Conform to Section 02300 for rough grading, finish grading and site surface drainage.

Remove and dispose of all surplus backfill materials to a location approved by the Owner.

WARNING TAPE INSTALLATION

Install warning tape over water, sewer or force mains and service lines in trench 2 feet below finished grade.

FROST PROTECTION

Place insulation in areas where water main, sewer service lines or water service lines cross a road, driveway, traveled path, or as indicated on the plans.

Excavation, Trenching, and Backfill 02315 - 7

Center insulation over pipe or appurtenance with 1 foot of compacted fill between the pipe and the insulation.

Grade fill so insulation lays flat.

Insulate with a minimum of one 2 inch layer of polystyrene.

If a minimum bury depth is specified, install one 2 inch thick layer for each foot of backfill less than the required minimum bury depth.

Install 3 foot wide for pipes up to 6 inches in diameter and 4 feet wide for pipes up to 12 inches in diameter.

Extend insulation a minimum of 5 feet on each side of the road crossing.

Lap insulation by 6 inches or stagger by 6 inches if composed of two layers.

Minimum thickness for the first lift of backfill over the insulation is 8 inches.

Do not operate construction equipment directly on insulation. Do not compact first lift with backhoe-mounted compactor or any other large compaction equipment.

Compact remaining backfill using normal construction practices.

REMOVAL OF NUISANCE WATER

Remove nuisance water entering the trenches.

Nuisance water that can be removed through the use of sump or trash pumps is not considered dewatering.

Keep trenches free from water until waterlines, fittings, valves, sewer lines, manholes and other appurtenances are in place and sealed against the entrance of water.

Prevent all water, earth or any foreign material from entering any facility.

Keep trenches free from water until the facilities are in place, sealed against the entrance of water, and backfill has been placed and compacted above the water level.

LOCATE EXISTING UTILITIES

Field locate all existing underground utilities.

Utilize state “811” or “one-call” hotlines.

Contact all other utility owners not covered by the state “one-call” hotlines.

UTILITY CONFLICTS

Protect existing utilities from damage during excavation and backfilling operations.

Excavation, Trenching, and Backfill 02315 - 8

Provide temporary support for existing water, gas, telephone, power, or other utility services that cross the trench until backfilling of trench is complete

Compact backfill to 90% of Standard Proctor Density under disturbed utilities.

Repair or replace any damaged existing utilities, at no additional cost to the project.

Water and sewer main crossing and parallel installation

Maintain a 10 foot horizontal separation (O.D. to O.D.) for parallel mains.

Upon approval by the project manager, water and sewer mains may be installed closer than 10 feet, provided all of the following conditions;

a. Vertical separation is 18 inches (O.D. to O.D.)

b. Water main is above the sewer main.

c. Separate trenches are maintained.

Maintain a minimum 18-inch vertical separation (O.D. to O.D.) for crossing mains with the water main above the sewer main.

a. Lay pipe with joints equidistant from the point of crossing.

If it is impossible to meet any of the above separation distances and deviations, one of the following methods shall be adhered to.

a. Sewer main shall be constructed to water main pressure pipe standards meeting a minimum pressure class of 150-psi.

b. Either the water main or the sewer main may be encased in a watertight carrier pipe that extends 10 feet on both sides of the crossing. The carrier pipe shall be of materials approved by the regulatory agency for use in water main construction.

c. The water main and sewer main installed shall be made of high density polyethylene (HDPE) pipe to eliminate the joints and possibility of leaks. Both water and sewer main shall be pressure tested in accordance to Section 02510.

Water and sewer service crossing and parallel installation.

Maintain a 30-inch horizontal separation from water and sewer services.

Maintain a 12-inch vertical separation for crossing water and sewer services.

Water service line splices or joints will not be permitted within 10 feet of a sewer line crossing.

MOVING FENCES AND MINOR STRUCTURES

Remove and reset culverts, drainage pipes or other minor structures that fall within the alignment of the new construction, to their original location and grade.

Visit the project site and determine actual conditions with regard to the existence of old car bodies, abandoned houses, fences, driveways, trees, stumps, brush, sidewalks, approaches, and other miscellaneous obstacles to construction.

Excavation, Trenching, and Backfill 02315 - 9

Unless specifically referenced in a bid item, no separate payment will be made for the removal or replacement of these items.

RECORDS

Conform to as-built requirements in Section 01781.

END OF SECTION

Concrete Septic Tank and Piping 02540 - 1

SECTION 02540 – CONCRETE SEPTIC TANK AND PIPING

PART 1 - GENERAL

SUMMARY

This section covers multiple compartment rectangular precast septic tanks. Also included is the piping from the home to the septic tanks along with cleanouts and septic tank abandonment.

RELATED WORK

Section 02315 – Excavation, Trenching and Backfill

Section 02534 – ST Effluent Lift Station

Section 02545 – Drainfields and Gravelless Chamber Systems

Section 02547 – Sand Filters

Section 02548 – Individual Lagoon

Section 02920 – Topsoiling, Seeding, Fertilizing, and Mulching

REFERENCES

ASTM C1227 – Standard Specification for Precast Concrete Septic Tanks

ASTM C1644 – Standard Specification for Resilient Connectors Between Reinforced Concrete On-Site Wastewater Tanks and Pipes

ASTM D2665 – Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Drain, Waste, and Vent Pipe and Fittings

ASTM D3034 – Standard Specification for Type PSM Poly(Vinyl Chloride) (PVC) Sewer Pipe and Fittings

State of Oregon – Oregon Administrative Rules Chapters 340-71 Onsite Wastewater Treatment Systems

State of Oregon – Oregon Administrative Rules Chapters 340-71 Construction Standards

SUBMITTALS

Septic tank (including wire mesh detail)

Septic tank riser and concrete plug

Effluent Filter

Concrete Septic Tank and Piping 02540 - 2

Solid sewer pipe and fittings

Cleanout

QUALITY ASSURANCE

The materials and construction methods specified herein are minimum requirements.

Where the appropriate state/local septic codes require more stringent materials or execution methods, they shall apply.

PART 2 - PRODUCTS

SEPTIC TANKS

Septic Tank Requirements

Min. reinforced concrete wall thickness 2 ½ inches Minimum capacity below outlet 1000 gallons, or as specified on the bid schedule Minimum liquid depth 2 1/2 feet Maximum liquid depth 5 1/2 feet Concrete compressive strength 4000 psi

Rectangular tanks

Minimum width of 36 inches Constructed with the longest dimension parallel to the direction of flow.

Reinforce throughout with 6-inch x 6-inch – 10/10 wire mesh.

Monolithic construction joints or interlocking V-notch, shiplap, or tongue and groove joints below the liquid level.

Provide two compartment tanks.

Tank partition: 3-inch thick reinforced concrete.

Leave 1-inch clear space between top of partition and top of tank.

Place partition so volume on inlet side is 2/3 of total tank volume.

Cast 4-inch PVC, DWV coupling in partition at midline of tank.

Inlet and Outlet

Provide tanks with inlet and outlet connections for 4-inch Schedule 40 PVC

DWV.

a. Inlet connection: Cast in place rubber boot with stainless steel clamp.

b. Outlet connection: Cast in place 4-inch schedule 40 PVC DWV coupling.

Provide inlet with an open-end sanitary tee or baffle made of approved materials.

a. Extend top of tee or baffle above the liquid level, keeping a minimum of 1 inch clearance from the top of the tank.

Concrete Septic Tank and Piping 02540 - 3

b. Extend bottom of tee or baffle to at least 6 inches below the liquid level.

Provide outlet with open-end schedule 40 PVC DWV sanitary tee and pipe.

a. Extend top of tee above the liquid level, keeping a minimum of 1 inch clearance from the top of the tank.

b. Extend bottom of tee below the liquid level to a depth equivalent to 40% of the liquid depth.

c. Provide long sweep elbow cut as shown in the detail drawings for gas deflection.

The outlet invert shall be at least 1 inch lower than the inlet invert.

Access Risers and Covers

12-inch diameter access opening over the inlet and the outlet.

12-inch PVC SDR 35 pipe access riser attached to the septic tank with a cast in place PVC coupling.

Reinforced concrete cover, plug type, weighing a minimum of 70 pounds and include a recessed rebar handle.

Joint Sealant

Butyl rubber based preformed flexible gasket-type sealant conforming to ASTM C990.

Acceptable products equivalent to:

a. RU106 Rubr-Nek LTM as manufactured by Henry Company.

b. Pro-Stik as manufactured by Press-Seal Gasket Corporation.

SOLID SEWER PIPE, CLEANOUT AND FITTINGS

Pipe: Schedule 40 PVC, DWV conforming to ASTM D2665.

End connection: Bell and spigot.

Fittings: Schedule 40 PVC, DWV conforming to ASTM D2665.

Solvent Cement: Conform to ASTM D2564

Cleanout

Schedule 40 PVC DWV pipe and fittings conforming to ASTM D2665.

4-inch solvent weld Schedule 40 PVC female adapter.

4-inch diameter threaded slotted white polypropylene flush plug with threaded brass insert as manufactured by Sioux Chief or approved equal.

Trailer House Cleanout:

Solvent weld Schedule 40 PVC DWV 45 degree wye.

Solvent weld female iron pipe threaded adapter with threaded plug

Concrete Septic Tank and Piping 02540 - 4

EFFLUENT FILTER

Maximum filter opening: 1/16-inch.

Dimensions: 3.25-inch diameter and 18-inch length.

Filter handle constructed of PVC or stainless steel.

Acceptable products equivalent to:

Equal to Zabel A1800 Orenco 4” Biotube Filter BEST Technology, Product Number GF10-16

PART 3 - EXECUTION

SOLID SEWER PIPE and CLEANOUTS

Install solid sewer pipe from the house to the septic tank.

Connect to home sewer line.

Minimum cover over solid sewer pipe is 12-inches.

Minimum slope between the house and the septic tank is 1/8-inch per foot or 6 inches, whichever is greater.

90-degree bends in the pipe between the house and the septic tank are not allowed.

Cleanouts.

Double Cleanouts: Install at the locations indicated on the plans.

Single Cleanouts:

a. Install one-way cleanouts at a spacing not to exceed 100 feet.

b. Install one-way cleanouts so that the service can be rodded or snaked in the direction of flow.

Construct as shown on the standard details.

Install a 4-inch sewer wye in the sewer service line and connect risers of the same material from the wye to the ground surface.

a. Attach a schedule 40 PVC DWV female adapter to the end of the riser.

b. Install cleanout so cap is flush with finished grade.

Trailer House Cleanout

Install on vertical drop under trailer and as indicated on drawings.

Solvent weld all joint connections.

Install insulation in traveled areas and areas with a bury depth less than three feet in accordance with Section 02315.

Concrete Septic Tank and Piping 02540 - 5

TANK INSTALLATION

Place tanks at the locations and elevations designated on the plans.

Refer to Section 02315 for excavation, backfill, and grading requirements.

Place tanks level on a solid flat level subgrade.

If over excavation is necessary to remove unsuitable subgrade soils, backfill to proposed grade with sand.

Install tanks in accordance with manufacturer’s recommendations.

Seal joint between precast concrete septic tank sections with joint sealant.

Install joint sealant according to manufacturer’s instructions.

Seal inlet and outlet with temporary plugs until connections are made to the inlet and outlet lines.

Set the top of the tank a minimum of 12-inches below finished grade. Do not exceed 24-inch cover depth unless tank is designed for deeper bury depth and project manager approves.

Install access risers and terminate so access cover is flush with finished ground surface.

Do not drive over the tank during and after construction.

Grade over tank to promote positive drainage away from top of tank.

Perform leakage test of tank if required by the project manager.

Fill tank with water and soak for 24 hours.

Refill tank and measure leakage.

Repair or replace tank if leakage exceeds one gallon in two hours.

EFFLUENT FILTER

Install effluent filter on outlet of septic tank, as shown on the detail drawings.

Install according to manufacturer’s instructions.

Solvent weld sanitary tee to 4-inch PVC DWV Schedule 40 outlet coupling cast in tank.

Filter handle to extend to within 12-inches of the top of the access port for easy access.

EXISTING SEPTIC TANK ABANDONMENT

Abandon existing septic tanks and/or wet wells where directed by the project manager.

Concrete Septic Tank and Piping 02540 - 6

Pump tanks prior to abandonment. Dispose the contents in accordance with state and federal requirements.

Remove any pipes, plumbing, risers, or pumps and legally dispose of off-site.

Puncture the bottom of the tank.

Crush the top of the tank and place in abandoned septic tank.

Backfill interior of the tank with suitable soil material.

Mark location abandoned septic tanks on the as-built drawing.

Great Plains Area Indian Health Service Revised 05/2022

Sanitary Sewer Service Lines 02531 - 1

SECTION 02531 – SANITARY SEWER SERVICE LINES

PART 1 - GENERAL

SUMMARY

This section includes installation of sewer service lines, connection to sewer mains (wyes and saddles), riser pipe, cleanouts, and house sewer connections.

RELATED WORK

Section 02315 – Excavation, Trenching and Backfill

Section 02530 – Sanitary Sewer

Section 2540 – Septic Tank Systems

Section 01720 – Staking and Construction Surveying

REFERENCES

ASTM D2665 – Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Drain, Waste, and Vent Pipe and Fittings

ASTM D3034 – Standard Specification for Type PSM Poly(Vinyl Chloride) (PVC) Sewer Pipe and Fittings

ASTM D3212 – Standard Specification for Joints for Drain and Sewer Plastic Pipes Using Flexible Elastomeric Seals

ASTM F477 – Standard Specifications for Elastomeric Seals (Gaskets) for Joining Plastic Pipe

ASTM F1336 – Standard Specification for Poly(Vinyl Chloride) (PVC) Gasketed Sewer Fittings

ASTM D2855 – Standard Practice for Making Solvent-Cemented Joints with Poly(Vinyl Chloride) (PVC) Pipe and Fittings

SUBMITTALS

Sewer Service Line Pipe and Fittings

Sewer Wyes and Saddles

Sewer Service Line Cleanout Adaptor and Flush Plug

ACCEPTANCE

The work will not be accepted until satisfactory pipe installation, backfilling and cleanup is complete.

Sanitary Sewer Service Lines 02531 - 2

If the work does not meet the specified requirements of this section and related sections, remove, and replace at no additional cost to the contract.

PART 2 - PRODUCTS

SEWER SERVICE LINE PIPE AND FITTINGS

Conform to ASTM D3034 as indicated:

Pipe Class: SDR 35.

Bell ended joints conforming to ASTM D3212.

Elastomeric gaskets conforming to ASTMF 477.

4-inch nominal diameter unless otherwise indicated.

Each length of pipe shall be clearly marked with the following:

a. Manufacturer.

b. Nominal Pipe Size.

c. The PVC Cell Classification.

d. Type PSM PVC Sewer Pipe.

e. ASTM Designation.

f. Pipe Class.

Conform to ASTM D2665 as indicated:

Pipe Class: Schedule 40 Solvent weld joints conforming to ASTM D2855.

4-inch nominal diameter unless otherwise indicated.

Each length of pipe shall be clearly marked with the following:

a. Manufacturer.

b. Nominal Pipe Size.

c. The PVC Cell Classification.

d. Type PSM PVC Sewer Pipe.

e. ASTM Designation.

f. Pipe Class.

SEWER WYES

Connection to New Sewers:

In-line gasketed fittings conforming to ASTM F1336.

Connection to Existing Sewers:

PVC Sewer Mains:

a. PVC conforming to ASTM D3034 or ASTM D2665.

b. Solvent weld skirt with watertight gasket branch.

c. Two stainless steel bands and connectors for securing to the main.

d. GPK Products of Fargo, ND, or approved equal.

Asbestos-Cement, Cast Iron, Concrete, or Vitrified Clay Sewers:

a. Sewer saddle with watertight gasket, stainless steel bands and connector for securing to the main.

Sanitary Sewer Service Lines 02531 - 3

b. Equal to Sealtite wye sewer saddle manufactured by General Engineering Company.

CLEANOUTS

Single Cleanout:

Schedule 40 PVC DWV pipe and fittings conforming to ASTM D2665.

4-inch solvent weld Schedule 40 PVC female adapter.

Supply 4-inch slip on cap or threaded female adapter with 4-inch diameter threaded slotted white flush plug with threaded brass insert as manufactured by Sioux Chief or approved equal.

Trailer House Cleanout:

Solvent weld Schedule 40 PVC DWV 45 degree wye.

Solvent weld female iron pipe threaded adapter with threaded plug.

Double Cleanouts:

Schedule 40 PVC DWV pipe and fittings conforming to ASTM D2665.

Supply 4-inch slip on cap or threaded female adapter with 4-inch diameter threaded slotted white flush plug with threaded brass insert as manufactured by Sioux Chief or approved equal.

PIPE HANGERS

Shall be made of a material compatible with piping material.

Shall be of sufficient strength to support the pipe at full capacity.

Shall not affect pipe integrity by abrading, cutting or bending of pipe.

PART 3 - EXECUTION

EXAMINATION

Verify that dimensions and elevations are as indicated on the plans.

Inspect pipe and fittings for defects.

Remove materials from the site that are defective, damaged, used, unsound, or that otherwise do not meet the specifications.

UTILITY CONFLICTS

Refer to Section 02315.

SEWER SERVICE LINE INSTALLATION

Sewer Wyes and Saddles:

Sanitary Sewer Service Lines 02531 - 4

Connection to New PVC:

a. Furnish and install wyes at the locations indicated by the plans.

b. Install a solvent weld cap or a plug and leave in place until service line construction begins.

c. Properly reference, record and stake wye locations to permit ready relocation, in accordance with Section 01781.

Connection to Existing PVC:

a. Install saddle wyes at the locations indicated by the plans.

b. Repair damage caused during the tapping process at no additional cost.

Rotate the branch or wye of the saddle no more than 45 degrees from horizontal.

Risers:

Extend riser from sanitary wye to an elevation that will allow for a service line to be laid at specified grades.

Install riser pipe in the sewer trench.

Install riser pipe approximately vertical.

Encase the bottom of riser, wye and 1/8 bend in crushed rock or sand.

Extend bedding the full width of the trench as excavated and not less than 18 inches in length from either side of the center of the riser.

Place bedding material to a point 12 inches above centerline of the sewer main at the location of the wye.

Service Lines:

Furnish and install sewer service lines at the locations on the plans.

Connect to the existing home sewer stub out if present underground outside the home.

For connecting beneath the home, place pipe hangers at a maximum distance of

4-feet apart for horizontal PVC pipe.

Cap sewer service, and stake if no connection is made.

Follow general pipe installations requirements of Section 02315.

Minimum slope for sewer service lines is 1/8-inch per foot (1%).

Maximum slope for sewer service lines is ½-inch per foot (4 %), unless otherwise specified.

Ninety-degree bends are not allowed between the house and the sewer main.

Connection of Sewer Service Lines to Manholes:

a. Connect to manholes only where permitted and approved by the project manager.

b. Conform to Section 02532 for channel shape and radius.

Sewer Service Line Cleanouts.

Double Cleanouts: Install at the locations indicated on the plans.

Single Cleanouts:

a. Install one-way cleanouts at a spacing not to exceed 100 feet.

b. Install one-way cleanouts so that the service can be rodded or snaked in the direction of flow.

Sanitary Sewer Service Lines 02531 - 5

Construct as shown on the standard details.

Install a 4-inch sewer wye in the sewer service line and connect risers of the same material from the wye to the ground surface.

a. Attach a schedule 40 PVC DWV slip-on cap or female adapter to the end of the riser.

b. Install cleanout so cap is flush with finished grade.

Trailer House Cleanout

Install on vertical drop under trailer and as indicated on drawings.

House Sewer Connection:

Install sewer service line pipe and fittings to a trailer house, modular home, or frame built home with a crawl space and/or multiple sewer drops coming from the home creating a confined space environment.

AS-BUILTS

Provide as-built information on each system in accordance with Section 01781. Use standard forms (if supplied) by the project manager.

Water Service Lines 02511 - 1

SECTION 02511 – WATER SERVICE LINES

PART 1 - GENERAL

SUMMARY

This section includes the installation of water service lines complete with corporation stops, curb stops, curb boxes, meter pits, freezeless risers, and other appurtenances for water systems.

RELATED WORK

Section 02315 – Excavation, Trenching and Backfill

Section 02510 – Water Distribution

Section 02512 – Individual Water Systems

REFERENCES

AWWA C901 – Polyethylene (PE) Pressure Pipe and Tubing, ½ inch through 3 Inch, for Water Service

ASTM B88 – Standard Specification for Seamless Copper Water Tube

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

ASTM D2239 – Standard Specification for Polyethylene (PE) Plastic Pipe (SIDR-PR) Based on Controlled Inside Diameter

ASTM D2241 – Standard Specification for Poly(Vinyl Chloride) (PVC) Pressure- Rated Pipe (SDR Series)

ASTM D3139 – Standard Specification for Joints for Plastic Pressure Pipes Using Flexible Elastomeric Seals

NSF/ANSI 14 – Plastics Piping System Components and Related Materials

NSF/ANSI 61 – Drinking Water System Components – Health Effects

SUBMITTALS

Section 01330 – Submittal Procedures

Product Data: Submit on the following:

Water Service Line

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Fittings PEX & Copper Tubing Corporation Stops Saddles, Tees, or Tapped Couplings Curb Stops and Boxes with Stationary Rod Freezeless Riser Yard Hydrant Meter Pit with Accessories

Water Meter with Remote Readout Meter Setter (Interior) Inlet Ball Valve with Drain Outlet Double Check Valve Pressure Regulator Heat Tape with Thermostat Pipe Insulation Service Saddles

ACCEPTANCE

Work covered by this section will not be accepted until satisfactory backfilling and testing is complete.

PART 2 - PRODUCTS

WATER SERVICE LINE AND APPURTENANCES

All water service line piping and appurtenances must meet the requirements of NSF/ANSI-61 and NSF/ANSI-14.

Polyethylene Pipe

AWWA C901 and ASTM D2239.

IPS size pipe: SDR 7 with 200 psi pressure rating.

High density, ultrahigh molecular weight polyethylene pipe compound PE-3408.

Non-flare fittings: Compression type equal to Ford Pack Joint, C66-44 or C66-

55, or McDonald MAC-PAK with rigid stainless steel stiffeners.

Pipe equal to Cresline HD 200.

Copper Pipe

¾-inch diameter with minimum wall thickness of 0.045 inches.

Type “K” soft annealed seamless copper tubing suitable for installation in public water systems conforming to ASTM B88 Solder or compression type connections as manufactured by A.Y. McDonald or

Ford.

Cross-Linked Polyethylene (PEX)

¾-inch with minimum wall thickness of 0.102 inches.

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Conform to ASTM F 876.

Mechanical crimp typed connections.

PVC Pipe

Conform to ASTM D2241, PVC 1120, SDR 21 or SDR 17 as indicated in the bid schedule.

Rubber compression ring joint conforming to ASTM D3139.

Conform to ASTM D1785, Schedule 40.

Saddles.

Minimum pressure rating of 200 psi.

Buna-N rubber gaskets.

Stainless steel nuts and bolts Minimum 4 inches wide for 3-inch diameter pipe and 5 inches wide for 4-inch diameter pipe.

PVC ASTM D2241 Pipe: Double bolt stainless steel equal to Romac 202BS, Romac 306 or Ford FS313.

PVC C900 Pipe: Stainless steel single bolt saddle clamps equal to Ford FS101 or Smith-Blair 317 or 372.

Ductile Iron, Asbestos Cement or HDPE Pipe: Double bolt stainless steel band equal to Ford FS20.

Corporation Stops

No-Lead Brass, meeting NSF-61, with pack joint connection.

Non-flare connections for all pipe types, equal to McDonald MAC-PAK with stainless steel stiffeners or Ford pack joint compression couplings with stainless steel stiffeners.

PE Service line: A.Y. McDonald 74701B-33, Ford FB1001-NL, Mueller H15009N, or equal.

PVC Service line: Ford FB 1002-NL, A.Y. McDonald 74701B-44, or equal.

Curb Stops

No-lead Brass, meeting NSF-61, with pack joint connections.

Non-flare connections for all pipe types.

Minneapolis pattern.

IPS polyethylene service line: Ford B66-444M-NL, A.Y. McDonald 76104 – 33, or equal with stainless steel stiffeners.

IPS polyethylene service line greater than 1-inch diameter: Ford B11-555M-NL or A.Y. McDonald 76104-33 with stainless steel stiffeners.

PVC service line: Ford B77-666M-NL or B77-777M-NL, A.Y. McDonald 76104-

44, or equal.

Curb Boxes with Stationary Rod

Cast iron Minneapolis pattern, length to match bury depth.

Stainless steel stationary rod.

Pentagon plug.

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A.Y. McDonald 5614, or equal.

Curb box lids: A.Y. McDonald 5607L or equal.

Supply one pentagon wrench and one combination key equal to A.Y. McDonald

Catalog #304B, 36 inches long or equal.

FREEZELESS RISERS AND FITTINGS

Constructed from only no-lead brass

No galvanized fittings are allowed.

Provided with a swing joint and be equal to True–Temp Positive Purge Model 7PP- DB with copper riser pipe.

Non-thermostatically controlled heat tape equal to Frostex.

Foam insulation with adhesive strip equal to Imcolock.

Supply one 25-foot, 14 gauge heavy duty outdoor extension cord with temperature rating down to -40°F.

YARD HYDRANTS

A. Frost proof buried to depths indicated in plans.

B. Inlet: ¾” NPT.

C. Outlet: ¾” brass house thread.

D. Rod: Stainless steel operating rod thru Teflon packing.

E. Automatic self-adjusting plunger.

F. Stand Pipe: 1” brass.

G. Model Any Flow as manufactured by Merrill Manufacturing of Storm Lake, Iowa.

H. Accessories:

1. Hydrant assist kit provided by Seppman Enterprises, model HAK 750.

2. Vacuum breaker, model NF8 as manufactured by Watts of North Andover, Massachusetts.

METER PIT

Minimum 15-inch diameter.

All no-lead brass appurtenances.

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Included with the pit: meter setter, meter, regulator, inlet angle shut off valve, outlet dual check valve, coiled polybutylene tubing, and pressure regulator if required.

Equal to Mueller Thermal-Coil 203 CT 1584 FSBL.

Depth as required for minimum bury of pipe.

Center Locking lid with 4-inch thick foam insulating pad and corrosion resistant bottom plate.

METER

5/8-inch x 3/4-inch with thermoplastic, no-lead brass case and frost proof design.

Read in U.S. gallons equipped with an absolute encoder sealed register.

Capable of producing electronic signal and supplied with remote readout.

Must meet the approval of the local water utility.

Purchase from local utility if required to do so.

REMOTE METER READOUT

25 feet of signal transmitting cable.

4-inch x 4-inch treated wooden post, 5 feet long.

¾ - inch rigid PVC conduit with solvent weld fittings.

INTERIOR METER ASSEMBLY WITH PRESSURE REGULATOR

No-Lead brass meter setter equal to Ford WS88-233B-NL.

Inlet ball valve equal to Ford B11-233D-NL with handle and drain.

Double check valve equal to Ford HHC11-333-NL.

Ford Pack Joint C86-33 for ¾ inch copper or C86-34 for 1 inch PE water service, or equal.

INTERIOR METER ASSEMBLY

No-Lead brass meter setter equal to Ford PB-2 Plumbhorn.

¾ inch Inlet ball valve equal to Ford B11-233D-NL with handle.

Double check valve equal to Ford HHC11-333-NL.

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Ford Pack Joint C86-33 for ¾ inch copper or C86-34-NL for 1 inch PE water service, or equal.

PRESSURE REGULATOR

Utilize a ¾-inch pressure reducing valve with outlet pressure of 60 psi.

Adaptable to 5/8-inchx3/4-inch meter setters.

No-Lead construction with stainless steel seat, adjustment and cage screws as well as an integral strainer screen.

Equal to Watts LFU5B-Z3.

WARNING TAPE

Supply detectable warning tape that is a minimum of 3 inches wide, blue or striped blue.

Printed with “Caution Buried Waterline Below.”

PIPE HANGERS

Made of a material compatible with piping material.

Sufficient strength to support the pipe at full capacity.

Will not affect pipe integrity by abrading, cutting or bending of pipe.

ACCESSORIES

Pentagon Wrenches.

One shut off key for curb stop used with air release pit.

Equal to A.Y. McDonald 304K2.

Combination keys.

36 inches long and suitable for the curb stop.

Equal to A.Y. McDonald 304B.

PART 3 - EXECUTION

WATER SERVICE LINE AND APPURTENANCES

Install water service line of the size and material indicated on the Bid Schedule.

Install at the locations shown on the plans.

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Provide sufficient slack in the water service line to prevent pulling joints apart and to allow for contraction due to temperature changes.

Refer to Section 02315 for excavation, trenching, backfilling, compaction, separation distance, and insulation requirements.

Install service line:

From the main to a location into or near each home.

a. Connect to the homes existing water stub out if provided outside the home.

b. If sleeve provided, run water line through the sleeve and leave a minimum of

12-inches of piping in the home. Seal space between piping and sleeve to prevent groundwater from entering the home.

c. If no stub-out is provided, cap service line and mark with steel post.

d. For connecting beneath the home, install pipe hangers at a maximum spacing of 6 feet apart for all horizontal copper tubing and 2 feet apart for all horizontal PE pipe inside the home.

Bury line consistent with water main depth. Insulate where installed above recommended frost line.

Install warning tape 2 feet below finished grade Use compression couplings for all connections.

Use stainless steel insert stiffeners for compression connections to PE pipe.

No splices or joints are allowed from the point of connection to the main to a point 10 feet beyond any sewer line crossing.

Install saddle at each corporation stop tapping location.

Connections shall be live tapped through the corporation stop with an approved tapping machine, unless specified below.

Dry taps are allowed only during new water main installation, before main disinfection.

For connections to mains smaller than 3 inch diameter, use saddle with ¾ inch tap and transition for 1 inch diameter water service line.

Curb stops and boxes with stationary rod.

Set curb stops on a solid concrete block 4 inches thick by 8 inches wide by 16 inches long placed on undisturbed earth.

Install stationary rod on curb stop.

Set the top of curb boxes flush with finished grade elevation.

Support curb box during the backfilling operation to prevent movement and maintain a vertical position.

Provide one curb wrench and one pentagon key.

Install water meter assemblies as shown on the standard details and in accordance with manufacturer’s recommendations.

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WATER METER PIT INSTALLATION

Install meter pit in the location designated on the plans or as instructed by the project manager in accordance with manufacturers recommendations.

Level meter pit on two 4”x8”x2” concrete blocks.

Install remote readout as shown in the detail drawing.

Connect remote readout with wires from meter in a rigid 3/4-inch Sch. 80 PVC conduit.

Install conduit for the full depth of the meter pit as indicated in the detail drawings.

Seal top of conduit and protect wire between the conduit and remote register.

UTILITY CONFLICTS

Refer to Section 02315.

FREEZELESS RISERS

Install freezeless risers below each mobile home and other homes where required, at the locations established by the project manager.

Install directly below the point of connection to the house plumbing whenever possible.

Set risers vertical except for freezeless riser containing a rigid heating element. .

Set risers at an angle that will allow for the removal of the interior components of the riser without moving or excavating the freezeless riser.

Install copper or PEX tubing from the riser to the house plumbing.

Install elbows or make long radius bends at 90-degree bends.

Kinks in the tubing are not allowed.

Solder copper joints with lead free solder.

Install heat tape and continuous foam insulation on all exposed tubing beneath mobile homes or within a crawl space.

YARD HYDRANTS

Install yard hydrants at the locations shown on the plans.

Set coupler vertical on precast concrete block.

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Place 5 cubic feet of clean crushed rock around base of hydrant with minimal amount of rock above the valve body for drainage.

Pour 36” square concrete pad with concrete meeting requirements of Section 03100.

TESTING

Turn on each corporation stop and apply main pressure to the service line in the presence of the IHS representative before backfilling.

Option: If a new water main is pressure tested, test the water service lines at the same time and pressure as the water main.

Repair all visible leaks and retest the line until test is successfully completed at no cost to the contract.

DISINFECTION

If water service facilities are installed and connected to newly installed water main, disinfect the service line at the same time as the water main.

Refer to Section 02510 for water main disinfections procedures if water main is depressurized.

If water service facilities are connected to an existing water main by live tap:

Disinfect the new water service facilities prior to connecting to the corporation stop and the home. Near the home, at a location approved by the project manager, the water service line will be extended to the surface and capped with a lead free brass ball valve.

Introduce sufficient chlorine solution into the corporation stop end to the water service line to produce a minimum chlorine residual of 200 ppm when filled.

After connection to corporation stop and pressurizing, flush the service line at the ball valve after three hours.

After service line is sufficiently flushed, obtain a water sample for bacteriological testing. Repeat process until a negative bacteriological report is received.

Connect the water service line to the home upon receiving a negative bacteriological report.

Flushing chlorinated water in accordance with AWWA C651.

Waste flushed disinfection water in an environmentally safe manner. The method used is subject to the approval of the project manager.

No additional payment will be made for any equipment, material, testing or labor required to disinfect the service line. Include all costs associated with disinfection in the contract bid prices for water service lines.

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AS-BUILTS

Provide as-built information on each system in accordance with Section 01781. Use standard forms, if supplied.