3f. QLA Waterline Specs 05-29-2020.pdf

SPECIFICATIONS

Project Name: QLA Water Main Replacement

FY20 JCN: 500259

Facility ID: QLA ARSR Location: Los Angeles, CA, 33°44'45.0"N 118°20'10.0"W Author (s): Jose Salmeron, Aum A Gandhi Date Prepared: 29MAY20

QLA ARSR

QLA Water Main Replacement 05/29/2020

Specifications Prepared Using:

City of LA BOE Master Specifications ANSI/AWWA B300, Hypochlorites ANSI/AWWA B301, Liquid Chlorine AWWA C651-14, Disinfecting Water Mains

01000 SITE CLEARING

02000 EARTHWORK

03000 WATER DISTRIBUTION

04000 WATER DISINFECTION

01000 SITE CLEARING

1.0 DESCRIPTION

A. Site clearing shall consist of removing all vegetable growth such as trees, roots, stumps, shrubs, brush, limbs; and stone, boulders, clods, wood and other vegetative growth from the growth surface. Clearing shall also include the removal and disposal of trash piles, rubbish, etc.

B. CONTRACTOR shall furnish all tools, equipment materials and supplies and shall perform all labor to complete the work associated with removal of all natural and artificial objectionable material from the designated areas of work.

C. This work shall also include the protection from injury and preservation of existing improvements, adjacent property, utility vegetation and existing objects designated to remain by the COR and/or CO.

D. Prior to commencing the work, obtain acceptance from the project engineer regarding methods to be used and disposal of removed materials.

1.1 QUALITY ASSURANCE

A. Labor: Use adequate numbers of skilled laborers thoroughly trained in site-clearing operations and experienced in the necessary crafts and completely familiar with the specified requirements and methods needed for the proper performance of the work of this Section.

B. Codes and Regulations: Perform all work of this Section in strict accordance with applicable codes and regulations, especially meeting all safety standards and requirements of CAL/OSHA. Provide additional measures, added materials and devices as may be needed as directed by the COR at no additional cost to the agency.

C. Miscellaneous Requirements:

a. Erection and Maintenance of Protections

b. Dust Control

c. Repair of Damages

d. Cleaning and Removal of Rubbish

D. Contractor Submittals: Submit a schedule of site clearing measures to be put in place for all work scheduled to the COR for review.

1.2 MATERIALS

A. Provide Materials not specifically described but required for completion of the work of this section as selected by the Contractor are subject to the review of the

COR.

1.3 SITE CONDITIONS

A. Examine the job-site and conditions under which work of this section will be performed. Correct conditions detrimental to timely and proper site-clearing operations, as directed by the COR. Do not proceed until such detrimental conditions have been corrected.

1.4 PROTECTION

A. Protect Existing Structures and Site Improvements indicated to remain from damage by approved methods and/or as authorized by COR. Removal of all protections shall be when work of this section is completed or when so authorized by the COR. If deemed necessary, apply protections to adjacent properties as required and directed by the COR.

B. Protect existing utilities [Indicated or made known to remain] traversing the job-site and serving existing adjacent facilities.

C. If necessary, protect existing trees and shrubs [made known to remain] by providing temporary surrounding fencing so located a sufficient distance away so that trees and shrubs will not be damaged by site-clearing operations.

D. Protection of Persons and Property (existing structures and site improvements)

a. Provide barricades, warning signs at open depressions and holes on adjacent property and public accesses.

b. Provide operating warning lights during hours from dusk to dawn each day if deemed necessary.

c. Protect existing remaining structures, utilities, sidewalks, pavements other facilities from damage as caused by settlement, undermining, washout or other hazards created by site-clearing operations of this section.

d. Provide and maintain pedestrian and vehicular access in accordance with Work Area Traffic Control Handbook (WATCH), latest edition.

E. Use means necessary to prevent air pollution or dust from becoming a nuisance to the public, to neighbors and to others performing work on or near the job-site.

Comply with governing regulations.

F. Maintain access to the job-site, other neighboring property, street and alley at all times.

1.5 SITE CLEARING

A. Prior to starting job-site clearing operations in the company of the COR. Visit the job site and verify the extent of the work.

B. Site clearing and grubbing shall be done in the presence of the COR. Contractor shall notify the COR 72 hours prior to clearing operation.

C. As necessary, clean out all vegetable growth, roots, stomps, clods and other objective materials.

D. As necessary, remove all concrete and masonry debris. Remove stones, boulders, clods which are 1 inch or larger. Remove stones, boulders, clods which are 1 inch or larger from all utility trenches.

E. Remove all existing rubbish and debris or those resulting from work operations of this Section as soon as possible, do not allow to pile up. Do not burn rubbish and debris on the job-site.

F. Where active utility lines need to be capped or plugged, perform such work in accordance with review from the COR.

G. For cesspools, septic tanks, and lines serving the same area which are not shown on record drawings, determine the location and lines leading from existing structures to the cesspool or septic tank and notify the COR.

H. Existing services to remaining structures are to be maintained at all times.

1.6 DISPOSAL OF MATERIALS

A. Disposal of materials is subject to the review of the COR.

1.7 STORAGE OF MATERIALS AT THE JOB-SITE

A. Storage not permitted beyond brief accumulation awaiting pick up by removal trucks. Delays in the removal of site-clearing materials from the job-site shall be subject to the review of the COR.

B. Storage of materials deemed necessary is subject to the review of the COR.

(END OF SECTION)

02000 EARTHWORK

2.0 DESCRIPTION

E. Site clearing shall consist of removing all vegetable growth such as trees, roots, stumps, shrubs, brush, limbs; and stone, boulders, clods, wood and other vegetative growth from the growth surface. Clearing shall also include the removal and disposal of trash piles, rubbish, etc.

F. CONTRACTOR shall furnish all tools, equipment materials and supplies and shall perform all labor to complete the work associated with earthwork.

G. This work shall also include the protection from injury and preservation of existing improvements, adjacent property, utility, vegetation and existing objects designated to remain by the authority having jurisdiction.

H. Prior to commencing the work, obtain acceptance from the project engineer regarding methods to be used and disposal of removed materials.

2.1 QUALITY ASSURANCE

familiar with the specified requirements and methods needed for the proper performance of the work of this Section.

B. Equipment: Use equipment adequate in size, capacity, and numbers to accomplish the work of this Section in a timely manner.

C. Codes and Regulations: Perform all work of this section in strict accordance with applicable codes and regulations, especially meeting all safety standards and requirements of CAL/OSHA. Provide additional measures, added materials and devices as may be needed as coordinated with the COR at no additional cost to the agency.

D. Miscellaneous Requirements:

a. The Contractor shall provide necessary measures for storm water pollution control and water quality protection. The contractor shall meet the standards of good housekeeping at all time.

b. Comply with the directions of the soil engineer.

E. Contractor Submittals: Refer to section 1.6 in the Statement of Work.

2.2 JOB CONDITIONS

familiar with the specified requirements and methods needed for the proper performance of the work of this Section.

B. Equipment: Use equipment adequate in size, capacity, and numbers to accomplish the work of this Section in a timely manner.

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C. Codes and Regulations: Perform all work of this section in strict accordance with applicable codes and regulations, especially meeting all safety standards and requirements of CAL/OSHA. Provide additional measures, added materials and devices as may be needed as coordinated with the COR at no additional cost to the agency.

D. Miscellaneous Requirements:

a. The Contractor shall provide necessary measures for storm water pollution control and water quality protection. The contractor shall meet the standards of good housekeeping at all time.

b. Comply with the directions of the soil engineer.

E. Contractor Submittals: Submit a schedule for all work scheduled to the COR for review.

2.3 JOB CONDITIONS

A. Required Work Coordination: The Contractor shall fully coordinate the work operations of this Section with that of other trades involved and with the COR.

Contractor shall include minimum two weeks in its construction schedule to allow for review by the COR. All inspections shall be coordinated with the

COR.

B. Trench Safety: safety standards and requirements of CAL/OSHA shall be followed.

C. Air Pollution Control: The Contractor shall comply with all air pollution control rules, regulations, and ordinances under FAA Order 3900.19C.

D. Use of Pesticides: If necessary to use pesticides, a material submittal must be provided and is subject to the review of the COR.

E. Sound Control Requirements: The Contractor shall comply with all local sound control and noise level rules, regulations and ordinances under FAA Order 3900.19C.

F. Use of Explosives: The use of explosives is not permitted.

2.4 PROTECTION

A. Refer to section 1.6.

2.6 SHORING

A. Shoring shall follow the rules, regulations, and ordinances under FAA Order

3900.19C and OSHA 1926.

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B. Upon completion of project or when no longer needed or otherwise coordinated with the authority having jurisdiction, remove shoring from the job site.

2.5 WATER AND EXISTING MATERIALS

A. Water: Divert or pump out of all excavations until concrete and other items are placed therein, forms removed and backfilling is completed. The Contractor shall provide a means for solids removal before discharging the water.

B. Existing Utilities: Utilities shown on the drawings are shown pursuant to a search of available records and are shown as a matter of information and not as a matter of fact. If utilities are to remain in place, provide adequate means of support and protection during earthwork operations.

1. Should uncharted or incorrectly charted piping or other utilities be encountered during excavation, consult project engineer immediately for directions. Repair damaged utilities to satisfaction of utility owner.

2. Do not interrupt existing utilities serving facilities, except when permitted in writing by the authority having jurisdiction and then only after acceptable temporary utility services have been provided.

3. Provide a minimum of 48-hour notice to the COR, and receive written notice to proceed before interrupting any utility. Obtain clearance and notify all utility companies in the area and call DigAlert by calling (800) 422-4133.

Deliver utility clearance ticket number to the project engineer prior to the start of any work.

2.6 MATERIAL HANDLING, DISPOSAL, AND STORAGE

A. Delivery: All materials, tools, equipment, etc. to be delivered to the job-site, in such a manner coordinated with progress of work of this section.

B. Material Disposal: Refer to section 1.7.

C. Material Storage: Refer to section 1.8.

2.7 PIPE BEDDING AND TRENCHING

A. Use clean earth materials subject to approval by the project engineer.

B. For water pipe or pipe rise, use approved washed material and extend 12-inches above said pipe, the balance of backfill to be approved clean earth materials.

03000 WATER DISTRIBUTION

3.0 GENERAL

A. System performance requirements: minimum 200 psig (1380 kPa) B. Product Data: Submit copies of manufacturer's specifications and installation instructions for each material including certification or other data verifying compliance with required characteristics. Indicate in writing that a copy of each has been distributed to the installer.

3.1 QUALITY ASSURANCE

A. Unless otherwise specified or approved by the project engineer, all materials and work shall be in accordance with "The Standard Specifications for Public Works Construction" (the Standard Specifications), latest edition.

B. Valves: The manufacturer's name and pressure rating shall be marked on valve body.

C. Pipe Laying and trenching shall be per Section 306 of the Standard Specifications and pipe joints shall be per Section 306-1.2.3 of the Standard Specification unless otherwise shown on the plans or specified in these specifications.

D. The city water meter shall not be removed or relocated. If necessary to the completion of the job, contractor shall acquire permit and remove/relocate at no added cost to the agency.

3.2 DELIVERY, STORAGE, AND HANDLING

A. Preparation for transport: Prepare valves, including fire hydrants, according to the following:

a. Ensure that valves are dry and internally protected against rust and corrosion.

b. Protect valves against damage to threaded ends and flange faces.

c. Set valves in best position for handling. Set valves closed to prevent rattling.

B. During Storage: Use precautions for valves, including fire hydrants, according to the following:

a. Do not remove end protectors, unless necessary for inspection; then reinstall for storage.

b. Protect from weather. Store indoors and maintain temperature higher than ambient dew-point temperature. Support off the ground or pavement in watertight enclosures when outdoor storage is necessary.

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C. Deliver piping with factory-applied end-caps. Maintain end-caps through shipping, storage, and handling to prevent pipe-end damage and to prevent entrance of dirt, debris, and moisture.

D. Protect stored piping from moisture and dirt. Elevate above grade. Do not exceed structural capacity of floor when storing inside.

E. Protect flanges, fittings, and specialties from moisture and dirt.

3.3 PROJECT CONDITIONS

A. Verify existing utility locations. Contact utility locating service.

B. Verify that it is possible to install water service piping to comply with original design and referenced standards.

C. Site Information: Reports on subsurface condition investigations made during design of project are available for informational purposes only; data in reports are not intended as representations or warranties of accuracy or continuity of conditions between soil borings. Owner assumes no responsibility for interpretations or conclusions drawn from this information.

3.4 SEQUENCING AND SCHEDULING

A. Coordinate connection to existing water meter with the agency.

B. Coordinate piping materials, sizes, entry locations, and pressure requirements with building water distribution piping.

C. Coordinate piping materials, sizes, entry locations, and pressure requirements with building fire-protection water piping.

D. As necessary, coordinate with other utility work.

3.5 PIPING AND JOINTS

A. Submit a B. PVC Pipe: ASTM D1785, Schedule 40:

a. Fittings: ASTM D2466, PVC.

b. Joints: ASTM D2855, solvent weld.

c. Trace Wire: Magnetic detectable conductor, brightly colored plastic covering, imprinted with "Water Service" in large letters.

C. Polyvinyl Chloride Plastic (PVC) Pressure Pipe: Suitable for potable water distribution and manufactured in compliance with NSF standards.

D. Pipe sizes 1 ½” – 3”: ASTM D2241 with 160 psi minimum working pressure, unless otherwise indicated.

E. Pipe sizes 4” or greater: AWWA C-900 with 200-psi minimum working pressure, unless otherwise indicated.

a. Joints: ASTM D3139 elastomeric gasket bell ends, conforming to ASTM

D2122 for bell measurements. The wall thickness of joint assembly shall be suitable to withstand internal pressures not less than pipe pressure class rating.

3.6 VALVES

3.6.1 GATE VALVES - UP TO 3 INCHES

A. Manufacturers:

1. Hammond Valve.

2. Stockham Valves and Fittings.

3. American Valve.

4. Crane Valve

5. Walworth.

6. Milwaukee Valve Co.

B. Brass or Bronze body, non-rising stem, inside screw, single wedge or disc, compression ends, with control rod, extension box and valve key.

3.6.2 GATE VALVES – 3 INCHES AND OVER

2. Stockham Valves and Fittings.

3. American Valve.

4. Crane Valve

5. Walworth.

6. Milwaukee Valve Co.

B. AWWA C500, Iron body, bronze trim, non-rising stem with square nut, single wedge, flanged ends, control rod, extension box and valve key.

3.6.3 BALL VALVES – UP TO 2 INCHES

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2. Stockham Valves and Fitting

3. Jenkins Valves Inc.

B. Brass body, teflon coated brass ball, rubber seats and stem seals, Tee stem pre-drilled for control rod, AWWA inlet end, compression outlet, with control rod, extension box and valve key.

3.6.4 SWING CHECK VALVES- FROM 2 INCHES TO 24 INCHES

1. General controls or approved equal.

B. AWWA C508, iron body, bronze trim, 45 degree swing disc, renewable disc and seat, flanged ends.

3.6.5 BUTTERFLY VALVES- FROM 2 INCHES TO 24 INCHES

2. Stockham Valves and Fitting

3. Jenkins Valves Inc.

B. AWWA C504, iron body, bronze disc, resilient replaceable seat, water or lug ends, ten position lever handle.

C. Non-rising-Stem, Resilient-Seated Gate Valves, 3-Inch NPS (DN80) and Larger:

AWWA C509, gray- or ductile-iron body and bonnet; with bronze or gray- or ductile-iron gate, resilient seats, bronze stem, and stem nut. Include 200-psig (1380-kPa) minimum working-pressure design, interior coating according to AWWA C550, and push-on- or mechanical-joint ends.

D. Butterfly Valves: AWWA C-504, Class 150B valve construction. Flanged, or mechanical joint as required. Iron body, stainless steel shaft, ductile Ni-Resist iron disc with rubber seat. Fit valves with corrosion resistant, self-lubricating, sleeve-type bearings. 150 psi design working pressure. Direction of turning for valve opening shall be counter-clockwise.

E. Valve Boxes: Cast-iron box with top section and cover with lettering "WATER”, bottom section with base of size to fit over valve and barrel approximately 5 inches (125 mm) in diameter, and adjustable cast-iron extension of length required for depth of bury of valve.

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F. Provide steel tee-handle operating wrench with each valve box. Include tee handle with one pointed end, stem of length to operate valve, and socket-fitting valve-operating nut. After installation of valve box cover and after installation of adjacent paving, if any, covers shall be sandblasted or wire-brushed as necessary and painted with bituminous black paint, unless another color is required by the Architect.

G. Indicator Posts: UL 789, FM-approved, vertical-type, cast-iron body with operating wrench, extension rod, and adjustable cast-iron barrel of length required for depth of bury of valve. Posts above and including connection to riser shall be sandblasted, if necessary, after installation and painted red, unless another color is required by the Architect.

3.7 ANCHORAGES

A. Concrete Reaction Backing: Portland cement concrete mix, 3000 psig (20.7 MPa).

1. Cement: ASTM C 150, Type I.

2. Fine Aggregate: ASTM C 33, sand.

3. Coarse Aggregate: ASTM C 33, crushed gravel.

4. Water: Potable.

3.8 EXECUTION

3.8.1 EARTHWORK

A. Refer to section 02000 for earthwork.

B. Refer to Standard Specifications for Public Works Construction – Green Book for cutting and patching of existing paving.

C. Refer to Standard Specifications for Public Works Construction – Green Book for cutting and patching of paving.

3.8.2 INSTALLATION – PIPE

A. Maintain separation of water main from sewer piping in accordance with code.

B. Install pipe to indicated elevation to within tolerance of 5/8 inches.

C. Install grooved and shouldered pipe joints to AWWA C606.

D. Route pipe in straight line.

E. Install pipe to allow for expansion and contraction without stressing pipe or joints.

F. Slope water pipe and position drains at low points

G. Form and place concrete for thrust restraints at each elbow or change of direction of pipe main.

H. Establish elevations of buried piping to ensure not less than 2 ft of cover.

I. Install trace wire continuous over top of pipe.

J. For deviations, provide submittal to be approved by project engineer.

3.8.3 INSTALLATION – VALVES

A. Set valves on solid bearing.

B. Center and plumb valve box over valve. Set box cover flush with finished grade.

3.8.4 PREPARATION

A. Field Measurements: Verify dimensions before proceeding with Work. Obtain field measurements for work required to be fitted to other construction. Be responsible for accuracy of such measurements and precise fitting and assembly of finished work.

3.8.5 PIPING SYSTEM REQUIREMENTS

A. General Locations and Arrangements: Drawings indicate general location and arrangement of piping systems. Install piping as indicated, unless deviations to layout are approved in advance by the project engineer.

B. Install components with pressure rating equal to or greater than system operating pressure.

C. Install piping free of sags and bends.

D. Install fittings for changes in direction and branch connections.

E. Piping Connections: Unless otherwise indicated, make piping connections as specified below:

3.8.6 SERVICE ENTRANCE PIPING

A. Extend water-service piping and connect to water-supply source and building water piping systems at outside face of building wall in locations and pipe sizes indicated.

1. Terminate water-service piping at building wall until building water piping systems are installed. Terminate piping with caps, plugs, or flanges as required for piping material. Make connections to building water piping systems when those systems are installed.

3.8.7 PIPING INSTALLATION

A. Pipe Laying: inspect pipe for cracks or other defects before installation. Do not use defective damaged or unsound pipe. Remove foreign matter from pipe interior before lowering into trench. Keep work clean and prevent water, earth or other substances from entering pipes or fittings. Do not lay pipe in water or when trench or weather conditions are unsuitable for work. Start laying at lowest point and lay pipe sections with spigot or tongue pointing in direction of flow. Lay pipe true to line and grade to form smooth and uniform invert. Place pipe with uniformly distributed bearing for bottom quarter of pipe. Excavate recesses to accommodate pipe bells, sleeves, glands or other fittings. Do not allow cinders, loam, humus, or brickbats to come in contact with pipe, valves, or fittings. Take up and re-lay pipe that has grade or joint disturbed after lying.

B. Curves and Offsets: Do not exceed pipe manufacturer's recommendations for deflections from straight line or grade, between extended center lines of 2 connecting pipes as made necessary by curves or offsets.

C. Pipe Joints: Provide in accordance with manufacturer's recommendations.

Obtain full contact between joined surfaces and keep each joint clean so that joint is not damaged or displaced. After joint is installed, immediately coat exposed bolt threads with bituminous compound.

D. Bury piping with depth of cover over top at least 30 inches (750 mm) and according to the following:

1. Under Driveways: With at least 36 inches (900 mm) cover over top.

2. If trenching before rough grading is completed would result in a lesser depth of cover than specified above, then trenching for water piping installation shall not be done until the specified minimum cover depth can be effected. If construction traffic will be allowed to pass over completed water piping installations prior to finish paving, then a protective pavement blanket at least equivalent to the final pavement and base thickness shall be constructed within the vehicle access area for a minimum distance of three feet on either side of the pipe. As an alternative to the temporary pavement blanket, the water pipe shall be installed at a minimum of 2 feet deeper than specified within construction traffic areas.

3.8.8 ANCHORAGE INSTALLATION

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A. Install anchorages for tees, plugs and caps, bends, crosses, valves, and hydrant branches. Include anchorages for the following piping systems:

1. Fire-Service Piping: According to NFPA 24.

B. Apply full coat of asphalt or other acceptable corrosion-retarding material to surfaces of installed ferrous anchorage devices.

3.8.9 FIELD QUALITY CONTROL AND IDENTIFICATION

A. Install continuous plastic underground warning tape during back-filling of trench for underground water-service piping. Locate 6 to 8 inches (150 to 200 mm) below finished grade, directly over piping.

B. Compaction testing will be performed in accordance with ASTM D1557.

C. Provide hydrostatic leak test as indicated in the California Code of Regulations, Title 24 - Building Standards, Part 5, 1998 Basic Plumbing Regulations with state amendments or approved equal.

D. Piping Tests: Provide labor and test equipment including test pumps, gauges, instruments and other equipment required. Use test quality pressure gauges with range of approximately twice test pressure. Use calibrated gauges and instruments with current calibration seals or certificates.

E. Conduct piping tests before joints are covered and after thrust blocks have hardened sufficiently. Fill pipeline 24 hours before testing and apply test pressure to stabilize system. Use only potable water.

F. Remove equipment subject to damage by test pressure from systems during testing. Replace removed equipment after testing. Systems may be tested in sections as work progresses; however, previously tested portion shall become part of later test of composite system. Correct leaks by remaking joints with new material. Test time accrues only while full test pressure is on system. Test before backfilling, concealing, insulating, or making connections to potable water system.

G. Testing of the newly laid piping or any valved section of piping shall be accomplished after the lines are laid, the joints and accessories installed, and the trench partially backfilled, leaving the joint exposed for examination. The piping shall be subjected for a minimum of two hours to a pressure of one and one-half times the working pressure, but in no case less than 150 psi or at a duration and pressure determined by local codes, whichever is more stringent. Examine all exposed pipe, joints, fittings and accessories during the test period. Replace or repair defective portions of the system, and repeat tests until results are satisfactory.

H. Prepare reports for testing activities.

04000 WATER DISINFECTION

4.0 WATER DISINFECTION

A. Purge new water distribution piping systems and parts of existing systems that have been altered, extended, or repaired before use.

B. Use purging and disinfecting procedure prescribed by authorities having jurisdiction or, if method is not prescribed by authorities, use procedure described in AWWA C651 or as described below:

C. Comply with NFPA 24 for flushing of piping. Flush piping system with clean, potable water until dirty water does not appear at points of outlet.

D. Fill system or part of system with water/chlorine solution containing at least 50 ppm of chlorine. Isolate system or part thereof and allow to stand for 24 hours.

E. Drain system or part of system of previous solution and refill with water/chlorine solution containing at least 200 ppm of chlorine; isolate and allow to stand for 3 hours.

F. Following allowed standing time, flush system with clean, potable water until chlorine does not remain in water coming from system.

G. Submit water samples in sterile bottles to authorities having jurisdiction. Repeat procedure if biological examination shows evidence of contamination.

H. Prepare reports for purging and disinfecting activities.