Attachment_2_Lincoln_Park_Golf_Course_Irrigation_Spec.pdf

CITY AND COUNTY OF SAN FRANCISCO

RECREATION AND PARK DEPARTMENT ADMINISTRATION

ATTACHMENT 2

See Next Page

Russell D Mitchell & Associates, Inc IRRIGATION SYSTEM 1 January 7, 2024

LINCOLN PARK GOLF COURSE

IRRIGATION SYSTEM

PART 1 - GENERAL

1.01 SUMMARY

A. The CONTRACTOR shall provide all labor, materials, supplies, tools, and transportation and perform all operations in connection with and reasonably incidental to complete the installation of the automatic sprinkler irrigation systems as shown on the drawings. Items hereinafter are included as an aid to take off, and are not necessarily a complete list of work items.

1. Keep existing irrigation operational as required during construction.

2. Trenching, stockpiling, excavation, materials, and refilling trenches.

3. Furnishing materials and installation for complete system including piping, valves, fittings, sprinkler heads, communication wire, and final adjustment of heads to insure complete coverage.

4. Line voltage connections to the irrigation, two wire communication cable to from all Smart Hub’s to LSMs and existing valves.

5. Replacement of unsatisfactory materials.

6. Clean-up, inspection and approval.

7. All work of every description mentioned in the specification and/or addenda thereto, all other labor, and materials reasonably incidental to the satisfactory completion of the work, including clean-up of the site, as directed by the Project Representative/Owner.

8. Tests.

9. As-built record drawings.

1.02 UNIT PRICE - MEASUREMENT AND PAYMENT

A. Irrigation System:

1. Measurement: Irrigation system installation is based on unit costs bid per the bid form.

2. Payment: The contract price paid for the Irrigation System shall include full compensation for furnishing all labor, materials, tools, equipment, and incidentals, and for doing all the work involved in furnishing and installing the Irrigation System, complete in place.

1.03 SUBMITTALS

A. Product Data: Submit manufacturer catalog information on all material to be used on the project as specified on the legend, notes, details and plans. Redline or highlight exact items on page to be submitted. Complete material list shall be submitted prior to performing any work.

IRRIGATION SYSTEM 2 January 7, 2024

B. Substitutions: No substitution will be permitted without prior written approval by the Project Representative/Owner. If the product is approved and, in the opinion of the Project Representative/Owner, the substituted product does not perform as well as the specified product, the Contractor shall replace it with the specified product at no additional cost to the Project Representative/Owner.

C. All equipment or materials installed or furnished without prior approval of the Project Representative/Owner may be rejected and the Contractor may be required to remove the equipment or material at their own expense.

1.04 CLOSEOUT SUBMITTALS

A. Project As-built Record Documents:

1. The Contractor shall maintain in good order in the field office, one complete set of black line prints of all sprinkler drawings which form a part of the contract, showing all water lines, communication wires, sprinklers, valves, stub-outs. In the event any work is not installed as indicated on the drawings, such work shall be corrected and documented accurately on the working drawings.

2. The irrigation as-staked plans shall be used to document the piping and electrical as it is installed. These as-staked drawings showing the current status of the installed piping and wire shall be submitted with each pay request. Progress payments may be delayed pending receipt of as-built information.

3. The consultant shall complete as-built drawings on an AutoCAD file. All sprinklers and valves shall have three dimensional coordinates in AutoCAD format. The procedures used to obtain the field data (including tees, greens, bunkers and cart paths) shall be the GPS process with survey grade GPS equipment and an aerial photograph imaged on the AutoCAD file of the GPS data. All sprinklers, QCV, valves, electrical, and piping shall be shown with the appropriate sizing. The contractor will not be responsible to compensate the irrigation consultant’s record drawing services.

4. Deliverables shall be one full size colored hard copy of the as-builts with communication wiring, main line routing with sizes. Per hole plans showing all the lateral isolation valves and plumbing of the sprinkler and valves.

B. Owner’s manuals:

1. Submit one (1) hard copy and one (1) pdf version of all owner’s manuals including all parts lists and local supplier of system components.

1.05 QUALITY ASSURANCE & GENERAL REQUIREMENTS

A. Qualifications: The Contractor, personally or through an authorized and competent representative, shall supervise the work constantly, and shall as far as possible keep the same foreman and workmen on the job from commencement to completion. The workmanship of the entire job must in every way be first class, IRRIGATION SYSTEM 3 January 7, 2024 and only experienced and competent workmen will be allowed on the job. A minimum of five years’ experience of installing irrigation systems of similar scope, size and complexity as the system being installed under this scope of work is required for all on-site job superintendents.

B. Manufacturer’s installation instructions and best practices: Manufacturer’s installation instructions shall be followed in all cases when not shown in the Drawings or Specifications.

C. O.S.H.A. Compliance: All articles and services covered by this specification shall meet or exceed the safety standards established under the Federal Occupational Safety and Health Act of 1970, together with all amendments in effect as of the date of this specification.

D. All irrigation systems shall be installed to meet or exceed the requirements set forth in the California Department of Water Resources Model Water Efficient Landscape Ordinance.

E. All materials supplied for this Project shall be new and free from any defects. All defective materials shall be replaced immediately at no additional cost to Project Representative/Owner.

F. Codes and Standards: Comply with all applicable codes and standards.

1. All work and materials shall be in full accordance with the latest rules and regulations of the National Electric Code; published by the Western Plumbing Officials Association; California Code of Regulations, Title 23, Division 2. Department of Water Resources, Chapter 2.7. Model Water Efficient Landscape Ordinance; and other State or local laws regulations.

Nothing in these drawings or specifications is to be construed as to permit work not conforming to these codes.

2. When the specifications call for materials or construction of a better quality or larger size than required by the above mentioned rules and regulations, the provision of the specifications shall take precedence over the requirements of said rules and regulations.

3. Contractor shall furnish, without extra charge, any additional material and labor when required by the compliance with these rules and regulations, though the work be not mentioned in these particular specifications or shown on the drawings.

4. The Contractor shall erect and maintain barricades, guards, warning signs, and lights as necessary or required by O.S.H.A. regulations for the protection of the public or workmen.

5. Any existing buildings, equipment, piping, pipe covering sewers, etc., damaged by the Contractor during the course of his work shall be replaced or repaired by the Contractor in a manner satisfactory to the Project Representative/Owner and at Contractor’s own expense, before final payment is made. The Contractor shall be responsible for damage caused by leaks in the piping systems being installed or having been installed under this contract. He/she shall repair, at his/her own expense, all damage so caused, in a manner satisfactory to the Project Representative/Owner.

IRRIGATION SYSTEM 4 January 7, 2024

6. The Contractor shall secure the required licenses and permits including payments of charges and fees, give required notices to public authorities, verify permits secured or arrangements made by others affecting the Work of this section.

1.06 EXISTING CONDITIONS

A. Protection of Existing Structures and Utilities

1. The Drawings show, if applicable, existing above and below grade structures and utilities that are known to the Project Representative/Owner. Locate known existing installations before proceeding with construction operations that may cause damage to such installations. Existing installations shall be kept in service where possible and damage to them shall be repaired with no adjustment of Contract Sum. Verify with Project Representative/Owner if As Built drawings are available.

2. If other structures or utilities are encountered, request Project Representative/Owner to provide direction on how to proceed with the Work. If a structure or utility is damaged, take appropriate action to ensure the safety of persons and property.

B. Trench Interference with Existing Tree Root Systems: Prior to trenching, layout main and lateral line locations within drip Line of trees and review locations with Project Representative/Owner. Relocate any lines that may interfere with existing root systems to avoid or reduce damage to root systems as accepted by Project Representative/Owner.

C. Provide barricades, coverings, warning signs, lights and other protection required by local code or OSHA to prevent damage to existing improvements to remain and to protect the public.

1.07 DELIVERY, STORAGE AND HANDLING:

A. Protection: Use all means necessary to protect irrigation system materials before, during and after installation and the installed work and materials of all other trades.

B. Replacement: In the event of damage, immediately make all repairs and replacements necessary to the satisfaction of the Project Representative/Owner and at no additional cost to the project.

C. The manufacturer shall package product in a manner designed to deliver the pipe and fittings to the project neatly, intact and without physical damage. During transportation each pipe shall rest on suitable pads, strips skids, or blocks securely wedged or tied in place.

IRRIGATION SYSTEM 5 January 7, 2024

D. During loading, transportation, and unloading, every precaution should be taken to prevent damage to the pipe. The handling of the pipeline shall be in such a manner that the pipe is not damaged by dragging it over sharp and cutting objects. Cuts or gouges that reduce the wall thickness by more than 10% are not acceptable and must be cut out and discarded.

E. Handle the pipe in accordance with the PPI Handbook of Polyethylene Pipe (2nd Edition), Chapter 2. All pipe and accessories shall be loaded and unloaded by lifting with hoists or by skidding in order to avoid shock or damage. Under no circumstances shall materials be dropped. Pipe handled on skidways shall not be rolled or skidded against pipe on the ground. Slings, hooks or pipe tongs shall be padded and used in such a manner as to prevent damage to the exterior surface or interior of the pipe. All pipe and fittings shall be subjected to visual inspection at time of delivery and before they are lowered into the trench to be laid.

F. Materials, if stored, shall be kept safe from damage and shall not be stacked higher than the limits recommended by the manufacturer. The bottom tiers shall be kept off the ground on timbers, rails, or concrete. Pipe shall not be stored close to heat sources. The contractor shall be responsible for all security, damage and loss of pipe, excluding Acts of God.

G. The interior of the pipe as well as all sealing surfaces of mating components (i.e.

flange faces) shall be kept free from dirt or foreign matter at all times. The open ends of all sections of joined and/or installed pipe (not in service) shall be plugged to prevent insects, animals, or foreign material from entering the pipe line or pipe section. The practice of stuffing cloth or paper in the open ends of the pipe will not be permitted. Use waterproof nightcaps to prevent the entrance of any type of natural precipitation into the carrier or containment pipe and will be secured to the pipe in such a manner that the wind cannot blow them loose.

Where possible, the pipe shall be raised and supported at a suitable distance from the open end such that the open end will be below the level of the pipe at the point of support.

1.08 LAYOUT OF WORK

A. The Irrigation Consultant will stake out the irrigation system. Changes from the drawings will be made at this time to accommodate field conditions. Contractor shall provide one laborer to assist with staking. The Project Representative/Owner will pay for the Irrigation Consultant’s field staking service.

Upon locating each sprinkler the Contractor shall permanently mark the location until the sprinkler is installed. Re-staking of lost sprinkler locations due to Contractor’s operations shall be at the Contractor’s expense.

B. Due to the scale of the Drawings, it is not possible to indicate all piping offsets, fittings, sleeves, etc., which may be required. Carefully investigate the conditions affected all of the work and plan accordingly, and furnish all required fittings.

Install system in such a manner to avoid conflicts with planting, utilities and architectural features.

C. Do not install the irrigation system as shown on the Drawings when it is obvious in the field that obstructions, grade differences or discrepancies in arc dimensions exist that might not have been considered. Bring such obstruction or differences to the attention of the Project Representative/Owner. Notify and

IRRIGATION SYSTEM 6 January 7, 2024 coordinate irrigation Work with applicable contractors for location and installation of piping and sleeves through or under walls, pavement and structures. In the event this notification is not given, the Contractor shall assume full responsibility for any revision necessary.

1.09 SEQUENCING AND SCHEDULING

A. Prior to start of construction, the Contractor shall submit a complete schedule of construction.

B. During the course of construction the course will remain open to play except that the Contractor may take one fairway out of play at any given time. The course shall remain entirely open to play during weekends and holidays. The course shall be readied for weekend play or holiday play by 4:30 p.m. the day prior by presenting a full eighteen (18) holes, without trenches, excavations, or other impediments to golf.

1.10 EXISTING IRRIGATION SYSTEM

A. This contract requires that the existing irrigation system be kept intact on all areas of the golf course not yet worked on to permit normal watering during construction. On holes that have been installed according to these plans and specifications, irrigation shall be operational from the computer. On holes being worked on, the Contractor shall afford the Project Representative/Owner every opportunity to hand water during the period of shutdown with particular emphasis on tees and greens.

1.11 INSTRUCTION

A. It shall be the Consultant’s responsibility to update the program of the central control system so that the input of the irrigation database will allow the hydraulic piping system to be used to its fullest potential without exceeding the hydraulic limitations calculated by the irrigation consultant. The Project Representative/Owner will pay for the irrigation consultant’s programming services.

B. The Contractor shall be responsible to enter the decoder/IC numbers into the computer from the as-staked sprinkler data sheets as the sprinklers are being installed.

1.12 WORKMANSHIP

A. The Contractor, personally or through an authorized and competent representative, shall supervise the work constantly, and shall as far as possible keep the same foreman and workmen on the job from commencement to completion. The workmanship of the entire job must in every way be first class, and only experienced and competent workmen will be allowed on the job.

1.13 SUPERVISION OF CONSTRUCTION

IRRIGATION SYSTEM 7 January 7, 2024

A. The day-to-day full-time supervision of construction will be under the direction of the Owner’s Representative Any questions regarding day-to-day interpretation of the specifications or working drawings which the Contractor may have, are to be directed only to the Owner’s Representative. Only the Owner’s Representative shall be authorized by the Consultant to approve the necessary day-to-day adjustments or modifications which from time to time may arise during the term of construction. All employees of the Contractor shall be subordinate to the Golf Course Superintendent. Disputes which may arise between the Golf Course Superintendent and the Contractor or the Contractor’s supervisors or foremen shall be arbitrated by the Consultant, and as necessary, by the Owner’s Representative. In any disputes relating to the golf course irrigation system design, or the implementation of that design, only the Consultant shall make the final and binding decisions.

1.14 CONTRACTOR’S STORAGE AREA

A. Space will be provided for the Contractor to erect a temporary fence for a storage yard on or adjacent to the golf course.

1.15 EXCESS TRENCHING SPOILS

A. A location on or adjacent to the golf course will be made available to dispose of the excess spoils.

1.16 WORKMEN’S COMPENSTATION

A. The Contractor shall maintain employer’s and workmen’s compensation insurance that will protect him against any and all claims resulting from injuries to, and deaths of, workmen engaged in work under this contract. In case any class of employees is not protected under the Workmen’s Compensation statute, the Contractor shall provide, and shall cause each subcontractor to provide, adequate employer’s liability coverage that will protect him against any claims resulting from injuries to, and death of, workmen engaged in work under this contract.

1.17 CHANGE ORDERS

A. Increase or decrease in the scope of work will become a change order to the original contract. The dollar amount of the change order will be based on the unit prices submitted with the original bid.

1.18 CONTRACTOR QUALIFICATIONS

A. The irrigation contractor performing this work shall have completed a minimum of three 18 hole golf course irrigation installation projects in the last 5 years. Each project shall have consisted of a computerized control system, a minimum of 1600 sprinklers. Provide project list and contact person with address and telephone numbers.

IRRIGATION SYSTEM 8 January 7, 2024

PART 2 - MATERIALS

2.01 PIPE AND FITTINGS

A. All pipe shall be manufactured from purple-colored PVC material and shall be printed on two sides with the wording “CAUTION – RECYCLED WATER ".

B. PVC Pressure Mainline pipe and fittings.

1. Pressure mainline piping:

a. 4” shall be C905 (DR 18), with rubber gasketed bell connections.

2. Pressure sub mainline piping (laterals):

a. 3” AND SMALLER: Shall be PVC 1120-Schedule 40 plastic pipe.

Pipe shall be made from NSF approved Type 1, Grade 1 PVC compound conforming to ASTM D1785.

3. C900 Pipe shall be made from an NSF approved Type 1, Grade 1 PVC with a cell classification of 12454 per ASTM D1784.

4. Schedule 40 pipe shall be manufactured in strict compliance to ASTM D1785 and D2665 (where applicable), consistently meeting and/or exceeding the Quality Assurance test requirements of these standards with regard to material, workmanship, burst pressure, flattening, and extrusion quality.

5. All PVC pipe shall bear the following markings:

a. Manufacturer’s name

b. Nominal pipe size

c. Class or Schedule

d. Pressure rating in PSI

e. NSF

f. Date of extrusion

6. Use rubber-gasketed pipe equipped with factory installed reinforced gaskets for mainline pipe with a nominal diameter greater than or equal to 4-inches. Gasketed pipe joints must conform to the "Laboratory Qualifying Tests" section of ASTM D3139. Gasket material must conform to ASTM F477. Use rubber gasketed deep bell ductile iron fittings conforming to ASTM A-536 and ASTM F- 477. Harco, Leemco or approved equal. Use lubricant approved by the pipe manufacturer. 40.6 11/6/02.

7. Use solvent weld pipe for mainline pipe with a nominal diameter less than 3-inches or where a pipe connection occurs in a sleeve. Use with Lasco heavy turf surge guard PVC solvent weld fittings. Use primer approved by the pipe manufacturer. Solvent cement to conform to ASTM Standard D2564.

8. All fittings shall bear the manufacturer’s name or trademark, material designation, size, applicable I.P.D. schedule and NSF Seal of approval.

IRRIGATION SYSTEM 9 January 7, 2024

9. Inside diameter of pipe shall be the same size as iron pipe.

10. PVC Type I shall not be threaded.

11. PVC fittings shall be PVC Type II, Schedule 40 NSF approved.

12. Caution shall be utilized in handling Type I pipe due to the possibility of cracking or splitting.

13. Threaded Nipples – ASTM D2464, Schedule 80 with molded threads.

C. Solvent for all PVC pipe shall be #711 Gray, along with #P-70 primer, NSF approved as manufactured by Industrial Polychemical Service, Gardena, California, or approved equal.

D. Pipe joint compound shall be non-hardening, non-toxic materials designed specifically for use on threaded connections in water carrying pipe. Performance shall be same as RectorSeal #5.

E. Swing joints shall be as shown on construction details. Use Lasco solvent weld PVC service tee or elbow with female acme threads or approved equal.

2.02 DUCTILE IRON FITTINGS

A. Fittings shall be deep bell push-on joint fittings manufactured for ASTM A536, Grade 65-45-12 ductile iron with a tensile strength of 65,000 psi.

B. Fittings shall be designed for use on IPS PVC pipe.

2.03 DUCTILE IRON FITTING ENCASEMENT:

A. Encase all ductile iron fittings and gate valves with a 4-Mil high density, cross laminated (HDCL) polyethylene plastic sheeting (AWWA C105). Wrap and fold around fittings to prevent contact with soil.

2.04 JOINT RESISTANT HARNESS

A. Use a joint restraint harness wherever joints are not positively restrained by flanged fittings, threaded fittings, and/or thrust blocks.

B. Use a joint restraint harness with transition fittings between metal and PVC pipe, where weak trench banks do not allow the use of thrust blocks, or where extra support is required to retain a fitting or joint.

C. Use bolts, nuts, retaining clamps, all-thread, or other joint restraint harness materials which are zinc plated or galvanized.

D. Use on pipe greater than or equal to 3-inch diameter or any diameter rubber gasketed pipe.

2.05 SERVICE SADDLES

A. Saddle body is cast from ductile iron meeting or exceeding ASTM A 536, Grade 65-45-12.

IRRIGATION SYSTEM 10 January 7, B. Gasket is made from Nitrile Butadiene Rubber (NBR) compounded for water and sewer service and a tolerance of petroleum products in accordance with ASTM D

2000 MBC 610

C. Straps shall be type 304 (18-8) heavy guage Stainless Steel per ASTM A204.

D. For PVC pipe choose a saddle that has the pipe O.D. closest to the top of the saddle’s O.D. range.

E. For copper pipe, single strap saddles should be pre-formed at the factory, or use type 304/306 stainless steel saddles.

F. Saddle shall be by Harco, Leemco or approved equal.

2.06 TRANSITION OR REPAIR COUPLINGS FOR CONNECTIONS TO ASBESTOS

CONCRETE PIPE, DUCTILE IRON PIPE OR OTHER PIPE

A. Couplings shall meet the design specifications per AWWA C219-07, and shall be used for water and sewerage applications, above and below ground. Shall be able to join pipes with diameter differences up to 1.30 inches and pipe end gaps up to 7.5 inches, and accommodate angular deflection of up to 8 degrees.

B. Size Range: Nominal Diameter ranges from 1.5 to 24 inches C. Flange Adapter: Consists of one compression end and gasket, coupling center sleeve and AWWA Class “D” Flange (per AWWA C207-07).

D. Coupling Body: Center sleeves fabricated of high strength carbon steel tubing equivalent to ANSI/AWWA C200.

E. Compression End Rings: One gasket compression end ring per coupling end.

End rings to be of either one or two bolt design, fabricated of carbon steel equivalent to ASTM A576. (One bolt per end in Nominal Size ranges of 1.5 to 12 inches and two bolts per end on the 14 to 24 inch diameter coupling end.)

F. Hydraulic Wide Range Gasket: Chloramine Resistant NSF-61 Approved EPDM gasket designed with a multi-layered wide range removable outer layer. Gasket hydraulically actuated with a pressure-equalizing dam, pressure cavity and sealing lip for working pressure of 260 psi (1.5 to 16 inches) and 232 psi (18 to 24 inch nominal diameter coupling).

G. Nuts and Bolts H. ANSI 304 Stainless Steel with yield strengths that conform to all nationally recognized standards. Bolts are to be pre-coated with an anti-sieze type coating to prevent galling.

I. Bolts and nuts shall be stainless steel. high strength low alloy steel track head bolts. National coarse rolled thread and heavy hex nuts. Steel shall meet AWWA C111 composition specifications.

J. Coatings: Interior and Exterior NSF-61 Approved Fusion Bonded Epoxy coating generally conforming to AWWA C213-01 section 4.5. Average thickness, 12

MILS.

K. Performance: When properly installed the coupling will provide 8 degrees of deflection across the coupling (4 degrees per end); up to 260 psi working

IRRIGATION SYSTEM 11 January 7, pressure for sizes 1.5” – 16”, and 232 psi working pressure for sizes 18”-24”; and 3/8 inch longitudinal pipe movement without leakage. (Flanged adapters will provide half the longitudinal movement and deflection.)

L. Testing: All products are proof tested to a minimum of 1.5 times working pressure.

M. Pressure: Must be able to be used at working pressures up to 260 PSIG.

N. Acceptable products: Hymax 2 Wide-Range Coupling Series, or approved equal.

2.07 STAINLESS STEEL ANGLE ISOLATION VALVES

A. Angle lateral isolation valves 2” in size shall meet the following requirements:

1. Valves shall be of stainless steel (316) body and cross handle with DI grip ring.

2. Valves shall be Harco or approved equal.

3. Install in 10” diameter plastic valve box as detailed.

2.08 DUCTILE IRON IPS SWIVEL JOINT LATERAL ANGLE VALVE SADDLE

A. Ductile iron IPS swivel joint lateral connection saddle shall meet the following requirements:

1. Saddles shall be of female swivel outlet with a ductile iron body.

2. Swivel saddles shall be Harco or approved equal.

2.09 QUICK COUPLING VALVES

A. Quick coupling valves shall be as shown on the drawings.

B. Install in 7” diameter plastic valve box as detailed.

2.10 SMART HUB IN PEDESTAL ENCLOSURE

A. Smart hub shall be as shown on the drawings.

B. Install as detailed.

2.11 CENTRAL CONTROL SYSTEM - EXISTING

2.12 COMMUNICATION CABLE

A. Irrigation communication cable: solid copper with U.L. approval for direct burial in ground. Size #12AWG wire with a jacketed 2-conductor. Preferred make and model is the Paige irrigation wire #P-7072D or approved equal. All splicing shall

IRRIGATION SYSTEM 12 January 7, be made with 3-M DBR/Y-6. or 3M SCOTCHLOK 3570 waterproof splice kit.

Refer to manufacturer’s recommendation at the time of construction.

B. No splicing of communication wire permitted without approval except at sprinklers, isolation valve boxes or splice box locations.

C. Each wire path from the Smart Hubs shall be a different color from the adjacent paths.

D. Two wire cable along main line shall be installed within 1.5” Schedule 40 grey PVC with Schedule 40 fittings and Schedule 40 electrical long sweeps elbows at all changes in direction. Sweep into each isolation valve box. At three-way splices sweep conduits into a Carson 1419 gray electrical.

2.13 CONDUIT PULL BOXES

A. In Landscaped Areas: Conduit pull boxes shall be Carson Model 1419, or approved equal plastic valve box with a lockable plastic lid. Color shall be Gray and lockable.

B. Pull boxes along a long conduit run shall be no more than 250 feet apart.

C. Each pull box shall be set on 6 inches, minimum, of clean drain rock.

2.14 ELECTRIC REMOTE CONTROL VALVES

A. Electric remote control valves sizes shall be shown on drawings.

B. Electric remote control valve shall be a normally closed, solenoid actuated globe pattern valve with a pressure reducing feature. Solenoid must be compatible with 2-wire system.

C. Valves shall be made of durable glass-filled nylon with a minimum pressure rating of 150 PSI

D. Valve shall have external and internal bleed for manual operation.

2.15 IDENTIFICATION TAG

A. Identification tags for all recycled water valves shall be manufactured by Christy.

Christy ID.MAX.P2.RC006.

2.16 VALVES BOXES

A. GATE VALVE (4”) BOXES:

1. All gate valves shall be installed within a Carson model 910 (10” round) plastic valve box with bolt down plastic lid or approved equal.

2. Use black colored boxes with recycled water decals installed on lid per detail.

B. ISOLATION VALVE BOXES:

IRRIGATION SYSTEM 13 January 7,

1. All isolation valves shall be installed within a Carson model 910 (10” round) plastic valve box with plastic lid or approved equal. Use a Carson 1419 plastic valve box with bolt down plastic lid or approved equal for isolation valves that require a ground rod.

2. Use green colored boxes with recycled water decals installed on lid per detail.

C. ELECTRIC REMOTE CONTROL VALVE BOXES:

1. All electric remote control valves shall be installed within a Carson model

1419 (14”x19”) plastic valve box with plastic lid or approved equal. Size of box is dependent on the size of valve. Lid shall be marked: "Irrigation Control Valve."

2. Use green colored boxes with recycled water decals installed on lid per detail..

D. QUICK COUPLING VALVE BOXES:

1. All quick coupling valves shall be installed within a Carson Model 708 depth plastic valve box with plastic lid or approved equal.

2. Use green colored boxes with recycled water decals installed on lid per detail..

2.17 SPRINKLER HEADS

A. All sprinkler heads shall be as listed on the drawings.

B. Use purple caps on sprinkler head for recycled water systems.

2.18 MISCELLANEOUS INSTALLATION MATERIALS

A. Pipe joint compound shall be non-hardening, non-toxic materials designed specifically for use on threaded connections in water carrying pipe. Performance shall be same as RectorSeal #5.

PART 3 - INSTALLATION

3.01 PREPARATION

A. Schedule and coordinate placement of materials and equipment in a manner to effect the earliest completion of work in conformance with construction and progress schedule.

3.02 HANDLING AND STORAGE

A. Protect work and materials from damage during construction and storage as directed by the Project Representative/Owner.

IRRIGATION SYSTEM 14 January 7, B. Handle plastic pipe carefully; especially protect it from prolonged exposure to sunlight. Any section of pipe that has been damaged will be discarded and removed and replaced if installed.

3.03 LAYOUT

A. Lay out work as accurately as possible in accordance with diagrammatic drawings.

B. Where site conditions do not permit location of piping, valves and heads where shown, notify Project Representative/Owner immediately and determine relocation in joint conference.

C. Prior to installation, the Contractor shall stake out the routing of all pressurized main lines for approval by Project Representative/Owner.

3.04 EXCAVATING AND TRENCHING

A. Work shall be performed when soils are reasonably dry and not saturated.

B. Trenching

1. Excavation shall be in all cases ample in size to permit the pipes to be joined at the elevations intended and to permit ample space for joining.

2. Make excavations for pipelines deep enough to provide minimum cover from finish grade as indicated on drawings.

3. Restore surfaces, existing underground installations, etc., damaged or cut as a result of excavations, to original conditions in a manner approved by the Project Representative/Owner.

4. Where other utilities interfere with irrigation trenching and pipe work, ad-just the trench depth as instructed by the Owner.

5. Depth of trenches shall be pipelines deep enough to provide minimum cover from finish grade as follows.

a. 30” minimum cover over main lines to isolation valves. Refer to legend for depth requirements.

b. 18” minimum cover to sprinkler heads. Refer to legend for depth requirements.

6. Trenches shall be excavated to such depths as will permit the pipe to be laid at the elevations, slopes, or depths of cover indicated on the draw-ings, and at uniform slopes between indicated elevations.

7. Whenever cobbles larger than 2 inches in size are present in earthen subgrade, the trench section shall be excavated to the lines required.

Every effort shall be made to keep the sides of the trenches firm and un-disturbed until backfilling has been completed and consolidated. Trench-es shall be excavated with approximately vertical sides between the ele-vation of the bottom of the pipe and an elevation one foot above the top of the pipe.

IRRIGATION SYSTEM 15 January 7, C. Backfilling:

1. Backfill materials shall be approved native soil in all landscaped areas.

Unsuitable material, including clods and rocks over 2 inches in size shall be removed from the premises by Contractor and disposed of legally at no cost to the Project Representative/Owner.

2. Backfill only after piping has been tested, inspected and approved.

3. Place backfill materials in 6” layers and compact by jetting or tamping to a minimum compaction of 85 percent of original soil density.

4. Dress off areas to finish grades and remove excess soil, rocks or debris remaining after backfill is completed.

5. All backfilling shall be properly compacted so as to avoid future settle-ment.

6. If settlement occurs along trenches, and adjustments in pipes, valves and sprinkler heads, soil, sod or paving are necessary to bring the system, soil, sod or paving to the proper level or the permanent grade, the Con-tractor, as part of the work under this contract, shall make all adjustments without extra cost to the project.

D. Re-sod Turf Areas

1. The contractor shall sod cut all existing turf areas that require trenching.

Keep existing sod cuts moist and relay rolls as quickly as possible to pre-vent loss and stress.

2. If sod cut turf does not survive, Contractor shall re-sod any turf areas damaged due to trenching, excavation, or equipment damage such as tire tracks, to the satisfaction of the Project Representative/Owner. If ap-proved by Project Representative/Owner re-seeding of damaged areas may be allowed.

3. Contractor shall furnish topsoil approved by the Project Representa-tive/Owner in sufficient quantities needed to perform the work and feather in all edges to eliminate any lips.

4. Sod shall be placed over the top of all excavations through grass areas.

Backfill of trenches should be held short of adjacent finished grade by 1/2 inch, minimum, to accommodate sod. Roll sod with a roller to eliminate any lips where existing and new sod transition.

5. If necessary, the edge of new sod and existing turf shall be blended by using a topsoil on the turf surface to eliminate the lip. The topsoil shall be placed and blended until the lip has been blended to the satisfaction of the Project Representative/Owner.

6. Roll sod after installation, a minimum of 3 passes, to remove air pockets and promote establishment of sod.

IRRIGATION SYSTEM 16 January 7,

3.05 INSTALLATION OF PIPING UNDER ASPHALT OR CONCRETE

A. General: Layout of the main line piping system shall be per the drawings and to the depth specified above.

B. Under Existing Pavement:

1. Sub main (lateral lines) Piping under existing pavement may be installed by jacking, boring or hydraulic driving.

2. Where cutting of existing pavement is necessary, provide alternate routes for vehicular traffic. After placement of pipes, backfill trench and compact to 95%. Replace entire section of base rock and hardscape to match ex-isting conditions.

3.06 MECHANICAL PIPE PULLING

A. Lateral line (sub-main) 3” and smaller shall be installed by use of an approved mechanical vibratory plow. After plowing, the remaining hump shall be rolled with a heavy mechanical roller to flatten flush with finish grade. Install wire while pulling lateral lines. Communication cable/control wire shall be fed (not pulled) along sub-main as pipe is pulled into ground.

3.07 ASSEMBLING PIPELINES

A. Pipe shall be installed in a manner which will provide for expansion and contraction as recommended by the pipe manufacturer. Pipe routing is diagrammatic and shall be installed in such a manner as to conform with the details.

B. In joining, use only the specified solvent and make all joints in strict accordance with the manufacturer's recommended methods. Give solvent welds at least 16 minutes set-up time before moving or handling and 24 hours curing time before filling with water.

C. All pipe shall be assembled free from dirt and pipe scale. Field cut ends shall be reamed only to full pipe diameter with rough edges and burrs removed.

D. Install 3” wide detectable warning tape above all pressurized main lines as shown in the details. Use Christy model #TA-DT-3-PRW for recycled irrigation water systems

E. Rubber Ring Seal Joint:

1. Use factory made male end or prepare field-cut male end to exact specifications of factory made end.

2. Carefully clean bell or coupling and insert rubber ring without lubricant.

Position ring carefully according to manufacturer’s instructions.

3. Lubricate male end according to manufacturer’s instruction and insert male end to specified depth. Use hands only when inserting PVC pipe.

4. Thrust blocks shall be provided where necessary to resist system pressure on ring-tite pipe and fittings. Blocks shall be concrete and the

IRRIGATION SYSTEM 17 January 7, size shall be based on an average soil safe bearing load of 700# per square foot.

5. Form thrust blocks in such a manner that concrete comes in contact only with the fittings. Thrust blocks shall be between solid soil and the fittings.

6. Ductile Iron Fittings Encasement: Wrap valves, tees, elbows, etc. with a flat sheet or split length of polyethylene tube by passing the sheet under and then over the appurtenance and bringing it together around the body of the appurtenance. Make seams by bringing the edges of the polyethylene together, folding over twice and taping them down. Carefully pour thrust blocks so as not to damage polyethylene material.

F. Solvent Weld Joint:

1. Prepare joint by first making sure the pipe end is square. Then, de-burring the pipe end, and clean pipe and fitting of dirt, dust and moisture.

2. Dry insert pipe into fitting to check for proper sizing. Pipe should enter fitting 1/3 to 2/3 depth of socket.

3. Coat the inside socket surface of the fitting and the male end of the pipe with P-70 primer (manufactured by Weld-On). Then without delay, apply Weld-On 711 cement liberally to the male end of the pipe and also apply 711 cement lightly to the inside of the socket. At this time, apply a second coat of cement to the pipe end.

4. Insert pipe immediately into fitting and turn 1/4 turn to distribute cement and remove air bubbles. The pipe must seat to the bottom of the socket and fitting. Check alignment of the fitting. Pipe and fitting shall be aligned properly without strain to either.

5. Hold joint still for approximately thirty (30) seconds and then wipe the excess cement from the pipe and fitting.

6. Cure joint a minimum of thirty (30) minutes before handling, at least six

(6) hours before allowing water in the pipe.

G. Threaded Joint:

1. Field threading of plastic pipe or fittings is not permitted. Only factory formed threads will be permitted.

2. Factory made nipples shall be used wherever possible. Field cut threads in metallic pipe will be permitted only where absolutely necessary. When field threading, cut threads accurately on axis with sharp dies.

3. All threaded joints shall be made up with pipe joint compound. Apply compound to male threads only.

4. Where assembling metallic pipe to metallic fitting or valve, not more than three (3) full threads shall show when joint is made up.

5. Where assembling to threaded plastic fitting, take up joint no more than one full turn beyond hand tight.

6. Where assembling plastic pipe, use strap type friction wrench only; do not use metal-jawed wrench.

IRRIGATION SYSTEM 18 January 7, H. Cap or plug openings as pipeline is assembled to prevent entrance of dirt or obstructions. Remove caps or plugs only when necessary to continue assembly.

I. Where pipes or control wires pass through sleeves, provide removable non-decaying plug at ends of sleeve to prevent entrance of earth.

J. For plastic-to-steel connections, work the steel connections first; use a non-hardening non-lead base pipe dope on all threaded plastic-to-steel connections and use only light wrench pressure. All plastic-to-steel connections shall be made with SCH 80 PVC nipple or plastic male adapters.

3.08 FLUSHING, CLEANING, AND DISINFECTING PIPING

A. All mains shall be cleaned and flushed to remove all dirt, sand, pipe shavings, debris and foreign matter.

3.09 REMOTE CONTROL VALVES

A. Install where shown on drawings and group together where practical.

B. Thoroughly flush main line before installing valves.

C. Flow control stems shall be adjusted or tuned per manufacturer recommendations.

D. Install 19GA ½” x ½” square wire mesh under all valve boxes and wrap up the sides of the valves. Adhere wire mesh to sides of box with stainless-steel screws and washers as required. Refer to details for more information.

3.10 TWO WIRE CABLE

A. Run lines along mains and laterals wherever practical.

B. All 2-wire installed with vibratory plow should be feed versus pulled C. Loop a minimum of two (2) feet of extra wire at each sprinkler and in each valve box.

D. Connections shall be made by crimping bare wires with brass connectors and sealing with watertight resin sealer packs per manufacturer specifications.

3.11 TWO WIRE CABLE IN CONDUIT:

A. Install cable in PVC electrical conduit with pull/splice boxes located as shown on plans and as required. This conduit shall be dedicated to irrigation control wires only.

B. For all cable runs, pull/junction boxes will be required every 250 linear feet of conduit run.

C. All electrical equipment and wiring shall comply with local and state codes and be installed by personnel skilled and licensed in the trade.

IRRIGATION SYSTEM 19 January 7, D. Connecting and splicing of wire at the valves shall be made using approved materials and shall be made by crimping bare wires with brass connectors and sealing with watertight resin sealer packs. 3M DBY-6 or approved equal.

E. All splices shall be placed within a valve box. Leave a 24” long coil, at each pull box, or splice location.

3.12 SPRINKLER HEADS

A. All sprinkler heads shall be set perpendicular to finish grade of the area to be irrigated unless otherwise designated on the plans.

3.13 QUICK COUPLING VALVES

A. Thoroughly flush lines before installing quick coupling valves.

B. Locate quick coupling valves as shown in the drawings and details.

3.14 TESTING

A. General

1. Notify the Project Representative/Owner at least three (3) days in advance of testing.

2. Furnish all necessary testing equipment and personnel. The contractor shall insure testing can be accomplished in a safe manner, including protection of personnel, equipment, and public in the event of a failure during testing. The contractor shall restrain pipe, components, and test equipment as required. All pumps, valves, temporary connections, meters, gauges and other measuring devices shall be furnished, installed and operated by the Contractor and all such equipment and devices and their installation shall be approved by the Project Representative/Owner

3. Perform testing at his/hers own expense.

4. Correct all leaks and retest until acceptance by the Project

Representative/Owner.

B. Perform test as specified below. Remake any faulty joints with all new materials.

C. Pressure Testing Procedure (PVC):

1. Apply the following tests after welded plastic pipe joints have cured at least twenty-four (24) hours.

a. Ring-Tite Mainline: Test main (constant pressure) lines hydrostatically at 150 PSI minimum. The test pressure is to be maintained for two (2) hours. The amount of water required to keep the pressure at 150 PSI shall be measured. Approved tables of allowable losses will be consulted, and the lines will be approved or not approved as such results may indicate. Contractor shall make tests and repairs as necessary until test conditions are met.

IRRIGATION SYSTEM 20 January 7, Allowable leakage for PVC plastic pipe with elastomeric joints in U.S.

gallons per hour at a test pressure of 150 PSI.

• 4” - 0.30 gallons per 1000 ft. or 50 joints

b. Test lateral lines with water at line pressure and visually inspect for leaks. Retest after correcting defects.

c. The Contractor is responsible for operating the system automatically for five (5) days with a minimum of two (2) - five (5) minute waterings per day prior to final acceptance of that portion of the irrigation system.

3.15 GUARANTEE

A. It shall be the responsibility of the Contractor to fill and repair all depressions and replace all necessary lawn and planting due to the settlement of irrigation trenches for one (1) year following completion and acceptance of the irrigation system.

B. The Contractor shall also guarantee all materials, equipment and workmanship furnished by him to be free of all defects of workmanship and materials, and shall agree to replace at his expense, at any time within one (1) year after installation is accepted, any and all defective parts that may be found.

C. If the Contractor does not respond to the Owner’s request for repairs covered under this guarantee, the Owner will make said repairs and back charge the Contractor for the cost of the work.

3.16 CLEAN-UP

A. Preservation and Cleaning: The Contractor shall clean up the work as it progresses. At frequent intervals, and at all times when directed by the Project Representative/Owner, the Contractor shall remove and dispose of accumulations of rubbish and debris of all kinds. At the time of completion, the entire site shall be cleared of tools, equipment, rubbish, etc., all of which shall be removed from the site; and the entire project, including surrounding premises, shall be left in proper, clean condition ready for acceptance.

END OF SECTION