CONSTRUCTION STANDARD SPECIFICATION

SECTION 02812

[IRRIGATION SYSTEMS]{.underline}

Page

[PART 1 - GENERAL 3](#__RefHeading___Toc178050633)

[1.1 RELATED DOCUMENTS 3](#__RefHeading___Toc178050634)

[1.2 SUMMARY 3](#__RefHeading___Toc178050635)

[1.3 RELATED SECTIONS 3](#__RefHeading___Toc178050636)

[1.4 REFERENCES 4](#__RefHeading___Toc178050637)

[1.5 PERFORMANCE REQUIREMENTS 5](#__RefHeading___Toc178050638)

[1.6 SUBMITTALS 6](#__RefHeading___Toc178050639)

[1.7 QUALITY ASSURANCE 6](#__RefHeading___Toc178050640)

[1.8 DELIVERY, STORAGE, AND HANDLING 7](#__RefHeading___Toc178050641)

[1.9 PROJECT CONDITIONS 7](#__RefHeading___Toc178050642)

[1.10 WARRANTY 8](#__RefHeading___Toc178050643)

[PART 2 - PRODUCTS 8](#__RefHeading___Toc178050644)

[2.1 PIPES, TUBES, AND FITTINGS 8](#__RefHeading___Toc178050645)

[2.2 PIPING JOINING MATERIALS 9](#__RefHeading___Toc178050646)

[2.3 QUICK COUPLERS 10](#__RefHeading___Toc178050647)

[2.4 ENCASEMENT FOR PIPING 10](#__RefHeading___Toc178050648)

[2.5 MANUAL VALVES 10](#__RefHeading___Toc178050649)

[2.6 PRESSURE-REDUCING VALVES 11](#__RefHeading___Toc178050650)

[2.7 AUTOMATIC CONTROL VALVES 12](#__RefHeading___Toc178050651)

[2.8 BACKFLOW PREVENTION DEVICES 12](#__RefHeading___Toc178050652)

[2.9 MANUAL DRAIN VALVES 13](#__RefHeading___Toc178050653)

[2.10 PRESSURE REGULATING VALVES -- Adjustable
13](#__RefHeading___Toc178050654)

[2.11 MISCELLANEOUS PIPING SPECIALTIES 13](#refheading___toc178050655)

[2.12 SPRINKLERS 13](#__RefHeading___Toc178050656)

[2.13 DRIP IRRIGATION SPECIALTIES 15](#__RefHeading___Toc178050657)

[2.14 CONTROLLERS 17](#__RefHeading___Toc178050658)

[2.15 BOXES FOR AUTOMATIC CONTROL VALVES
18](#__RefHeading___Toc178050659)

[PART 3 - EXECUTION 18](#__RefHeading___Toc178050660)

[3.1 EARTHWORK 18](#__RefHeading___Toc178050661)

[3.2 PREPARATION 19](#__RefHeading___Toc178050662)

[3.3 PIPING INSTALLATION 21](#__RefHeading___Toc178050663)

[3.4 JOINT CONSTRUCTION 21](#__RefHeading___Toc178050664)

[3.5 THRUST BLOCKS (TB) 22](#__RefHeading___Toc178050665)

[3.6 VALVE INSTALLATION 22](#__RefHeading___Toc178050666)

[3.7 SPRINKLER INSTALLATION 23](#__RefHeading___Toc178050667)

[3.8 DRIP IRRIGATION SPECIALTY INSTALLATION
24](#__RefHeading___Toc178050668)

[3.9 VALVE BOX INSTALLATION 24](#__RefHeading___Toc178050669)

[3.10 AUTOMATIC IRRIGATION-CONTROL SYSTEM INSTALLATION
24](#__RefHeading___Toc178050670)

[3.11 FIELD QUALITY CONTROL 25](#__RefHeading___Toc178050671)

[3.12 BACKFILLING 26](#__RefHeading___Toc178050672)

[3.13 COMMISSIONING 26](#__RefHeading___Toc178050673)

[3.14 ADJUSTING 27](#__RefHeading___Toc178050674)

[3.15 DEMONSTRATION & MAINTENANCE 27](#__RefHeading___Toc178050675)

[3.16 FINAL INSPECTION AND ACCEPTANCE. 27](#__RefHeading___Toc178050676)

CONSTRUCTION STANDARD SPECIFICATION

SECTION 02812

[IRRIGATION SYSTEMS]{.underline}

1.  []{#__RefHeading___Toc178050633 .anchor}GENERAL

    1.  []{#__RefHeading___Toc178050634 .anchor}RELATED DOCUMENTS

        A.  Drawings and general provisions of the Contract, including
            General and Supplementary Conditions and Division 1
            Specification Sections, apply to this Section.

    2.  []{#__RefHeading___Toc178050635 .anchor}SUMMARY

        A.  Section Includes:

            1.  Piping.

            2.  Encasement for piping.

            3.  Manual valves.

            4.  Pressure-reducing valves.

            5.  Automatic control valves.

            6.  Automatic drain valves.

            7.  Transition fittings.

            8.  Dielectric fittings.

            9.  Miscellaneous piping specialties.

            10. Sprinklers.

            11. Quick couplers.

            12. Drip irrigation specialties.

            13. Controllers.

            14. Boxes for automatic control valves.

    3.  []{#__RefHeading___Toc178050636 .anchor}RELATED SECTIONS

        A.  Refer to the following sections for related work:

            1.  Section 01330 -- Submittal Procedures. All required
                submittals shall be per Sandia Construction Standard
                Specification Section 01330, "Descriptive Submittal
                Procedures".

            2.  Section 02200 -- Earthwork. Perform trenching,
                excavation, boring, backfilling, sleeving, and
                compacting as required.

            3.  Section 02510 -- Asphalt Concrete, with Standard Detail
                WU3001 -- Utility Crossing at Pavement.

            4.  Section 02665 -- Underground Water Lines for Domestic
                and Fire Protection Systems.

            5.  Section 15050 -- Basic Mechanical Materials and Methods

            6.  Section 15310 -- Automatic Sprinklers and Water-Based
                Fire Protection Systems. Refer to this Section for
                backflow prevention guidelines.

            7.  Section 16001 -- Electrical Work.

    4.  []{#__RefHeading___Toc178050637 .anchor}REFERENCES

        A.  The publications listed below form a part of this Section to
            the extent referenced. The publications are referred to in
            the text by basic design only.

            1.  American Society for Testing and Materials (Latest
                Edition) -- ASTM.

> A- 674 Standard Practice for Polyethylene Encasement for Ductile Iron
> Pipe for Water or Other Liquids
>
> B-32 Standard Specifications for Solder Metal
>
> B-88-03 Standard Specifications for Seamless Copper Water Tube
>
> B-813-00el Standard Specifications for liquid and Paste Fluxes for
> Soldering of Copper and Copper Alloy Tube
>
> B-828 Standard Practice for Making Capillary Joints by Soldering of
> Copper and Copper Alloy Tube and Fittings.
>
> D-1784 Std. Specification for Plastic Insert Fittings for
>
> D-1875 Std. Test Method for Density of Adhesives in Fluid Form
>
> D-1785 Std. Specification for Poly Vinyl Chloride (PVC) Plastic Pipe,
> Schedules 40, 80, & 120.
>
> D-2241 Std. Specification for Poly Vinyl Chloride (PVC) Pressure-Rated
> Pipe.
>
> D-2464 Std. Specification for Threaded Poly Vinyl Chloride (PVC)
> Plastic Pipe Fittings, Schedule 80.
>
> D-2466 Std. Specification for Poly Vinyl Chloride (PVC) Plastic Pipe
> Fittings, Schedule 40.
>
> D-2467 Std. Specification for Poly Vinyl Chloride (PVC) Plastic Pipe
> Fittings, Schedule 80.
>
> D-2564 Std. Specification for Solvent Cements for Poly Vinyl Chloride
> (PVC) Plastic Piping Systems.
>
> D-2609 Std. Practice for Plastic Insert Fittings for Polyethylene (PE)
> Plastic Pipe
>
> D-2657 Std. Practice for Heat Fusion Joining of Polyolefin Pipe and
> Fittings
>
> D-2683 Std. Specification for Socket Type Polyethylene Fittings for
> Outside Diameter Controlled Polyethylene Pipe.
>
> D-2774 Std. Practice for Underground Installation of Thermoplastic
> Pressure Piping.
>
> D-2855 Std. Practice for Making Solvent-Cement Joints with Poly Vinyl
> Chloride (PVC) Pipe & Fittings.
>
> D-3139 Specification for joints for Plastic Pressure Pipe using
> Flexible Elastomeric Seals.
>
> D-3261 Std. Specification for Butt Heat Fusion Polyethylene (PE)
> Plastic Fittings for PE Plastic Pipe and Tubing.
>
> F- 402 Std. Practice for Safe handling of Solvent Cements, Primers and
> Cleaners used for joining Thermoplastic Pipe and Fittings.
>
> F-656 Std. Specifications for Primers used in Solvent Cement Joints of
> Polyvinyl Chloride (PVC) Plastic Pipe and Fittings.
>
> F-771 Std. Specification for Polyethylene (PE) Thermoplastic High
> Pressure Irrigation Pipeline systems.

2.  American Society of Agricultural Engineers -- ASAE.

> S376.1 Design Installation & Performance of Underground, Thermoplastic
> Irrigation Pipelines.

3.  National Sanitation Foundation - NSF

4.  American Water Works Association- AWWA

5.  American Society of Mechanical Engineers\_ ASME

6.  Manufacturers Standardization Society of the Valve and Fittings
    Industry, Inc. -MSS

7.  American Society of Safety Engineers - ASSE

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5.  []{#__RefHeading___Toc178050638 .anchor}PERFORMANCE REQUIREMENTS

    A.  Irrigation zone control shall be automatic operation with
        controller and automatic control valves.

    B.  Location of Sprinklers and Specialties: Design location is
        approximate. Make minor adjustments necessary to avoid plantings
        and obstructions such as signs and light standards. Maintain
        100% percent irrigation coverage of areas indicated.

    C.  Delegated Design (Design/Build type contract): Design 100%
        percent coverage irrigation system, unless otherwise specified,
        using performance requirements and design criteria indicated.

    D.  Minimum Working Pressures: The following are minimum pressure
        requirements for piping, valves, and specialties unless
        otherwise indicated:

        1.  Irrigation Main Piping: 60 psi.

        2.  Circuit Piping: 60 psi.

6.  []{#__RefHeading___Toc178050639 .anchor}SUBMITTALS

    A.  General: Submit the following in accordance with conditions of
        the contract and Section 01330, Submittal Procedures.

    B.  [Product Data]{.underline}: All pipe and tubing materials,
        valves, emitters, bubblers, sprinkler heads, equipment, and
        accessories shall be submitted for approval. Data shall indicate
        the maximum allowable operating pressures of each component and
        any related manufacturing standards and recommendations. Submit
        manufacturer's literature, technical data, and recommendations
        for the System as specified.

    C.  [Shop Drawing]{.underline}: Submit detailed shop drawing showing
        complete System layout to include irrigation piping and sizes,
        sprinkler and bubbler heads, emitters, wiring diagram, valves,
        and controllers (to include mounting detail).

    D.  Red-Line Drawings

        1.  Record drawings noting any variations from the Contract
            Documents. Submit one copy of record "Red-Line" prints prior
            to expiration of the required maintenance period.

        2.  All valves and controllers shall be GPS surveyed. This
            service can be obtained by paging 505.530.4477.

    E.  Controller Chart.

        1.  Provide a Controller Chart that is 8^1/2^" x 11" and
            hermetically sealed. Chart shall be legible \[adjust format
            accordingly\] and color-coded for each zone, keying stations
            of the Controller to valve locations and to irrigation heads
            served by the station. Place Chart inside door of
            Controller.

    F.  Operation & Maintenance Manual

        1.  The O&M Manual shall include manufacturer's recommended
            instructions and maintenance schedule for the complete
            irrigation system.

        2.  Provide a copy of the color-coded Controller Chart in the
            Manual

    G.  Spray irrigation system audit test results. Turf areas 10,000 sf
        and larger shall be audited by an Irrigation Association
        certified auditor. The following efficiencies shall be minimal:
        Fixed spray -- 60%, rotors -- 70%.

    H.  Backflow test results.

    I.  Pressure test results of system pressure test for 1 hour at 100
        psi.

7.  []{#__RefHeading___Toc178050640 .anchor}QUALITY ASSURANCE

    A.  Installer Qualifications: Licensed in landscaping and irrigation
        systems with not less than five years experience in the type and
        scale of work required in this Section.

    B.  All irrigation work shall be performed by a single firm
        specializing in this type of work and possessing the State of
        New Mexico MS06 Irrigation Certification license. Firm shall
        also provide for at least one on-site employee with a journeyman
        irrigation license.

    C.  Irrigation System: Provide underground irrigation system as a
        complete unit, including sprinklers, bubblers, drip irrigation
        heads, controllers, and accessories -- produced by acceptable
        manufacturers as specified herein.

8.  []{#__RefHeading___Toc178050641 .anchor}DELIVERY, STORAGE, AND
    HANDLING

    A.  Store plastic piping protected from direct sunlight. Support to
        prevent sagging and bending.

    B.  Product Handling: Follow manufacturer\'s published
        recommendations for handling materials and equipment. PVC pipe
        shall lay flat during transport and storage.

9.  []{#__RefHeading___Toc178050642 .anchor}PROJECT CONDITIONS

    A.  Interruption of Existing Water Service: Do not interrupt water
        service to facilities occupied by Owner or others unless
        permitted under the following conditions and then only after
        arranging to provide temporary water service according to
        requirements indicated:

        1.  Notify SCO no fewer than five days in advance of proposed
            interruption of water service.

        2.  Do not proceed with interruption of water service without
            SCO written permission.

    B.  Existing Conditions:

        1.  Take precaution to insure that equipment and vehicles do not
            disturb or damage existing site grading, walks, curbs,
            pavements, utilities, plants, tree protection zones, and
            other existing items and elements of the Site. Notify the
            SCO if rock layer(s) or other unanticipated conditions are
            encountered underground.

        2.  Utilities: Verify the locations and sizes of stub-outs for
            water sources indicated on the Contract Drawings as the
            source of water supply to the underground irrigation system.

        3.  Existing Utilities: Prior to excavation, determine the
            locations of all newly constructed and existing utilities.
            It is the Contractor's responsibility to obtain all
            necessary spotting services thru the SCO. Do not damage or
            disturb underground utilities. If a conflict exists between
            the location of underground utilities and the proposed work,
            notify the SCO and arrange for field and design adjustments.

        4.  Unknown Utilities: In the event that uncharted or
            incorrectly charted utilities are encountered during
            excavation that conflicts with this work, all work on that
            part of the job shall cease until the SCO is contacted and
            resumption of work is authorized by the SCO.

        5.  Existing Structures: Use extreme caution when working near
            existing structures. Do not damage existing features unless
            specifically indicated on the Contract Drawings. Contractor
            is responsible for incidental damage caused to existing site
            features and structures. Repairs shall be made at
            Contractor's expense.

        6.  Sequencing/Scheduling: Coordinate irrigation system with
            related work. Grade site within 1"-inch of finish grade
            prior to trenching. Install irrigation system prior to plant
            material installation.

10. []{#__RefHeading___Toc178050643 .anchor}WARRANTY

    A.  General: Warranty underground irrigation system through the
        specified warranty period \[one twelve month calendar period\]
        against operational deficiencies due to inferior material or
        workmanship. Correct deficiencies immediately as directed by the
        SCO at no additional cost to SNL, including damage caused by
        such defects. Repairs shall be completed within ten business
        days of notification from the SDR.

    B.  Settlement: Warranty underground irrigation system through the
        specified warranty period \[one twelve month calendar period\]
        against settlement damage. Adjust, restore, or replace pipes,
        valves, sprinkler heads, planting, paving, or other improvements
        or damages caused by settlement at no additional cost to Sandia.
        These adjustments and restorations include damage caused to
        adjacent areas that are not part of the project. Damaged areas
        shall be restored to their original state.

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2.  []{#__RefHeading___Toc178050644 .anchor}PRODUCTS

    1.  []{#__RefHeading___Toc178050645 .anchor}PIPES, TUBES, AND
        FITTINGS

        A.  Comply with requirements in the piping schedule for
            applications of pipe, tube, and fitting materials, and for
            joining methods for specific services, service locations,
            and pipe sizes.

        B.  Ductile-Iron Pipe with Push-on Joint: AWWA C151, with
            push-on-joint bell and spigot ends.

            1.  Push-on-Joint, Ductile-Iron Fittings: AWWA C110,
                ductile- or gray-iron standard pattern or AWWA C153,
                ductile-iron compact pattern.

                a.  Gaskets: AWWA C111, rubber.

        C.  Soft Copper Tube: ASTM B88, Type L (ASTM B88M, Type B),
            water tube, annealed temper.

            1.  Copper Pressure Fittings: ASME B16.18, cast-copper-alloy
                or ASME B16.22, wrought-copper solder-joint fittings.
                Furnish wrought-copper fittings if indicated.

            2.  Bronze Flanges: ASME B16.24, Class 150, with
                solder-joint end.

            3.  Copper Unions: MSS SP-123, cast-copper-alloy,
                hexagonal-stock body, with ball-and-socket,
                metal-to-metal seating surfaces and solder-joint or
                threaded ends.

        D.  Hard Copper Tube: ASTM B88, Type L (ASTM B88M, Type B), and
            ASTM B88, Type M (ASTM B88M, Type C), water tube, drawn
            temper.

            1.  Copper Pressure Fittings: ASME B16.18, cast-copper-alloy
                or ASME B16.22, wrought-copper solder-joint fittings.
                Furnish wrought-copper fittings if indicated.

            2.  Bronze Flanges: ASME B16.24, Class 150, with
                solder-joint end.

            3.  Copper Unions: MSS SP-123, cast-copper-alloy,
                hexagonal-stock body, with ball-and-socket,
                metal-to-metal seating surfaces and solder-joint or
                threaded ends.

        E.  PE Pipe with Controlled ID: ASTM F771, PE3408 compound; SIDR
            11.5 and SIDR 15.

            1.  Insert Fittings for PE Pipe: ASTM D2609, nylon or
                propylene plastic with barbed ends. Include bands or
                other fasteners.

        F.  PE Pipe with Controlled OD: ASTM F771, PE3408 compound,
            SDR11.

            1.  PE Butt, Heat-Fusion Fittings: ASTM D3261.

            2.  PE Socket-Type Fittings: ASTM D2683.

        G.  All valves shall be NSF (National Sanitation Foundation)
            Certified for potable water.

        H.  Pipe and Pipe Fittings

            1.  Polyvinyl Chloride Pipe (PVC).

                a.  Main and Lateral Lines: All plastic pipe which is
                    2^1/2^ inches or smaller shall be Schedule 40 PVC
                    and shall conform to ASTM D1785 -- continuously and
                    permanently marked with manufacturer's
                    identification, type, class, nominal pipe size,
                    schedule, and pressure rating \[in psi\] in
                    accordance with the NSF standard.

                b.  Main Lines: All main line pipe which is larger than
                    2^1/2^ inches in diameter shall be PVC 1120 or 1220
                    (SDR-PR) pipe, SDR-21 with a 200 psi pressure rating
                    and conforming to ASTM D3139.

                c.  Provide pipes in 20 foot lengths, free of holes,
                    blisters, wrinkles or dents.

                    Note: Except for drip irrigation systems all systems
                    are designed to 100 psi. Pressure shall be regulated
                    at source connection to operate at manufacturers
                    recommended pressure.

        I.  Threaded Nipples: Schedule 80 machined PVC pipe, Type 1,
            Cell Classification 12454, complying with ASTM D2467.

        J.  Line location tape: shall be detectable irrigation line
            marking tape- Thorbrand or equal. Location tape shall be
            used on all main and lateral lines.

    2.  []{#__RefHeading___Toc178050646 .anchor}PIPING JOINING MATERIALS

        A.  Pipe-Flange Gasket Materials: AWWA C110, rubber, flat face,
            1/8" inch (3.2 mm) thick unless otherwise indicated;
            full-face or ring type unless otherwise indicated.

        B.  Metal, Pipe-Flange Bolts and Nuts: ASME B18.2.1, carbon
            steel unless otherwise indicated.

        C.  Brazing Filler Metals: AWS A5.8/A5.8M, BCuP Series,
            copper-phosphorus alloys for general-duty brazing unless
            otherwise indicated.

        D.  Solder Filler Metals: ASTM B32, lead-free alloys. Include
            water-flushable flux according to ASTM B813.

        E.  Cleaner, Primer and Solvent Cements

            1.  Cleaner: Uni-Weld 7300 cleaner, ASTM F 656, or approved
                equal. Cleaner shall be NSF approved.

            2.  Primer: Uni-Weld 8700, Hi-Etch purple primer, ASTM F656.

            3.  Cleaner/Primer shall be any color other than clear.

            4.  Solvent Cements: Uni-Weld 2200 clear, light viscosity
                type, for lateral lines, Uni-Weld 1700 gray, heavy duty
                viscosity type, for lateral lines larger than 2^1/2"^
                inch diameter, and Uni-Weld 6700 clear, light viscosity
                type for Flex/PVC connections -- ASTM D 2564. Solvent
                shall be NSF approved.

        F.  Plastic, Pipe-Flange Gasket, Bolts, and Nuts: Type and
            material recommended by piping system manufacturer unless
            otherwise indicated.

        G.  Sealing Tapes and Pastes:

            1.  Threaded Connections between PVC and Metal Pipe:
                Rectorseal No. 100 virgin heavy duty sealing paste,
                Plasto-joint Stick as manufactured by Lake Chemical
                Company, or Teflon tape.

            2.  Metal-to-Metal Connection: Rectorseal No.5 slow dry,
                soft set pipe thread compound.

            3.  PVC-to-PVC Connections: Teflon tape.

            4.  Plastic irrigation head or Plastic valve to pipe
                Connections: Teflon tape. Thread sealing compound shall
                not be used on thread connections between nipples and
                plastic valves.

    3.  []{#__RefHeading___Toc178050647 .anchor}QUICK COUPLERS

        A.  Manufacturers: Subject to compliance with requirements,
            Provide products by one of the following :

        B.  Basis-of-Design Product: Subject to compliance with
            requirements, provide comparable product by one of the
            following:

            1.  Hunter Industries Incorporated.

            2.  Rain Bird Corporation.

            3.  Weathermatic.

        C.  Description: Factory-fabricated, bronze or brass, two-piece
            assembly. Include coupler water-seal valve; removable upper
            body with spring-loaded or weighted, rubber-covered cap;
            hose swivel with ASME B1.20.7, 3/4-11.5NH threads for garden
            hose on outlet; and operating key.

    4.  []{#__RefHeading___Toc178050648 .anchor}ENCASEMENT FOR PIPING

        A.  Standard: ASTM A674 or AWWA C105. Class 200 PVC Sleeves, 2x
            the diameter of the pipe being sleeved.

        B.  Form: Tube.

        C.  Material: Class 200 PVC

        D.  Color: White.

    5.  []{#__RefHeading___Toc178050649 .anchor}MANUAL VALVES

        A.  Curb Valves: Refer to SNL standard specification 02665

            1.  Description:

                a.  Standard: AWWA C800.

                b.  NPS 1 (DN25) and Smaller Pressure Rating: 150 psi
                    (1035 kPa).

                c.  NPS 1-1/4 to NPS 2 (DN32 to DN50) Pressure Rating:
                    150 psi (1035 kPa).

                d.  Body Material: Brass or bronze with ball or
                    ground-key plug.

                e.  End Connections: Matching piping.

                f.  Stem: With wide-tee head.

        B.  Curb-Valve Casing:

            1.  Standard: Similar to AWWA M44 for cast-iron valve
                casings.

            2.  Top Section: Telescoping, of length required for depth
                of burial of curb valve.

            3.  Barrel: Approximately 3" inch (75-mm) diameter.

            4.  Plug: With lettering \"WATER.\"

            5.  Bottom Section: With base of size to fit over valve.

            6.  Base Support: Concrete collar.

        C.  Shutoff Rods for Curb-Valve Casings: Furnish two steel,
            tee-handle shutoff rod(s) with one pointed end, stem of
            length to operate deepest buried valve, and slotted end
            matching curb valve for Project.

        D.  Plastic Ball Valves:

            1.  Description:

                a.  Standard: MSS SP-122.

                b.  Pressure Rating: 150 psi (1035 kPa).

                c.  Body Material: PVC.

                d.  Type: True Union.

                e.  End Connections: Socket or threaded.

                f.  Port: Full.

        E.  Bronze Gate Valves: Rubber or resilient seated only

            1.  Description: Manual, bronze, rubber seated

    6.  []{#__RefHeading___Toc178050650 .anchor}PRESSURE-REDUCING VALVES

        A.  Water Regulators:

            1.  Description:

                a.  Standard: ASSE 1003.

                b.  Body Material: Bronze for NPS 2 (DN50) and smaller;
                    cast iron with interior lining complying with AWWA
                    C550 or that is FDA approved for NPS 2-1/2 and NPS 3
                    (DN65 and DN80).

                c.  Pressure Rating: Initial pressure of 150 psi (1035
                    kPa).

                d.  End Connections: Threaded for NPS 2 (DN50) and
                    smaller; flanged for NPS 2-1/2 and NPS 3 (DN65 and
                    DN80).

            2.  Capacities and Characteristics:

                a.  Size: 1"-3" inch NPS .

                b.  Design Flow Rate: 50-150 gpm .

                c.  Design Inlet Pressure: 200 psi.

                d.  Design Outlet Pressure Setting: 10-75 psi .

        B.  Flow meter

            1.  Calsense FM flow meter: Additional information can be
                obtained at http://www.calsense.com, or (800) 573.8608.

    7.  []{#__RefHeading___Toc178050651 .anchor}AUTOMATIC CONTROL VALVES

        A.  Brass, Automatic Control Valves:

            1.  Manufacturers: Subject to compliance with requirements,
                provide products by one of the following

                a.  Rainbird

                b.  Weathermatic

                c.  Hunter Industries

            2.  Description: Red brass body, normally closed, diaphragm
                type with manual-flow adjustment, and operated by 24-VAC
                solenoid. Valve shall be a reverse flow design.

        B.  Plastic, Automatic Control Valves:

            1.  Manufacturers: Subject to compliance with requirements,
                provide products by one of the following:

                a.  Hunter Industries Incorporated.

                b.  Rain Bird Corporation.

                c.  Weathermatic.

            2.  Description: Molded-glass filled nylon body, normally
                closed, diaphragm type with manual-flow adjustment, and
                operated by 24-VAC solenoid. With captured plunger and
                150 -200 psi rating. Slow closing with fabric reinforced
                diaphragm.

    8.  []{#__RefHeading___Toc178050652 .anchor}BACKFLOW PREVENTION
        DEVICES

        A.  Backflow Prevention Devices shall be installed at the
            locations indicated and as detailed on the Shop Drawings.
            The selected device shall be appropriate for the
            installation and shall comply with COA Cross Connection
            Control Ordinance. The device shall be a USC approved
            device.

        B.  Pressure Vacuum Breaker shall be installed on all
            connections without backpressure. (This assembly shall be a
            minimum of 12" inches higher in elevation than highest point
            in the piping system and outlet, otherwise the system is
            considered to be under backpressure). Coordinate
            installation with the Mechanical Contractor.

        C.  Reduced Pressure Assemblies shall be installed on all
            connections under backpressure.

        D.  Traditional check valve assemblies are not allowed.

        E.  Freeze Protection for Backflow Preventors

            1.  Backflow Preventors shall be protected from freezing
                temp as required by the COA Cross Connection Control
                Ordinance as per drawings with either heat tape with
                built in light indicator or heater.

    9.  []{#__RefHeading___Toc178050653 .anchor}MANUAL DRAIN VALVES

        A.  Description: Brass rubber seated.

    10. []{#__RefHeading___Toc178050654 .anchor}PRESSURE REGULATING
        VALVES -- Adjustable

        A. Description: Inlet pressure up to 3000 psi, adjustable outlet
        pressure from 25-75 psi, seated spring cage, corrosion resistant
        screws, union inlet construction, stainless steel strainer,
        bronze body, serviceable in line bypass feature.

    11. []{#refheading___toc178050655 .anchor}MISCELLANEOUS PIPING
        SPECIALTIES

        A.  Water Hammer Arresters: ASSE 1010 or PDI WH 201, with
            bellows or piston-type pressurized cushioning chamber and in
            sizes complying with PDI WH 201, Sizes A to F.

        B.  Pressure Gages: ASME B40.1. Include 4^1/2"^ inch (115mm)
            diameter dial, dial range of two times system operating
            pressure, and bottom outlet.

    12. []{#__RefHeading___Toc178050656 .anchor}SPRINKLERS

        A.  General Requirements: Designed for uniform coverage over
            entire spray area indicated at available water pressure.

        B.  Plastic, Pop-up, Gear-Drive Rotary Sprinklers:

            1.  Rotary Sprinkler

                a.  Match precipitation rate nozzles

                b.  Low discharge trajectory angle

                c.  Filter Screen

                d.  Use 4"-- 6" inch pop-ups in cool season grass areas

                e.  Use 6" -- 9" inch pop-ups in native grass seeded
                    area

                f.  MP Rotator or equal

        C.  Plastic, Pop-up, Impact-Drive Rotary Sprinklers:

            1.  Manufacturers: Subject to compliance with requirements,
                provide products by one of the following

                a.  Rainbird.

                b.  Hunter Industries

                c.  Champion Irrigation Products.

                d.  Toro Company (The); Irrigation Division.

            2.  Description:

                a.  Case: ABS.

                b.  Pop-up Height: Approximately variable 4"- 9" inches.

                c.  Sprinkler Construction: ABS and other
                    corrosion-resistant metals.

            3.  Capacities and Characteristics:

                a.  Nozzle: As per drawings and Irrigation schedule.

                b.  Flow: As per drawings and Irrigation schedule.

                c.  Arc: As per drawings and Irrigation schedule.

                d.  Radius: As per drawings and Irrigation schedule.

                e.  Inlet: NPS  ½" ¾", or 1" depending on brand

        D.  Plastic, Pop-up Spray Sprinklers

            1.  Fixed Spray Sprinklers

                a.  Filter screen.

                b.  Use 4" -- 6" inch pop-ups in cool season grass
                    areas.

                c.  Matched Precipitation Rates Nozzles

                d.  Adjustable arc nozzles: Use only when odd arcs are
                    required.

                e.  Use 6" -- 9" inch pop-ups in native grass seeded
                    areas.

                f.  M P Rotor or equal

            2.  Manufacturers: Subject to compliance with requirements,
                provide products by the following manufacturer:

                a.  Hunter Irrigation.

            3.  Description:

                a.  Body Material: ABS.

                b.  Nozzle: ABS.

                c.  Retraction Spring: Stainless steel.

                d.  Internal Parts: Corrosion resistant.

                e.  Pattern: Fixed, with flow adjustment.

            4.  Capacities and Characteristics:

                a.  Nozzle: As per drawings and irrigation
                    specifications

                b.  Flow: As per drawings and irrigation specifications

                c.  Pop-up Height: As per drawings and irrigation
                    specifications

                d.  Arc: As per drawings and irrigation specifications

                e.  Radius: As per drawings and irrigation
                    specifications.

                f.  Inlet: **N**PS ½" or NPS ¾".

        E.  Plastic Shrub Sprinklers:

            1.  Manufacturers: Subject to compliance with requirements,
                provide products by one of the following:

                a.  Hunter Industries Incorporated.

                b.  Rainbird.

                c.  Weathermatic.

            2.  Description:

                a.  Body Material: ABS or other plastic.

                b.  Pattern: Fixed, with flow adjustment.

            3.  Capacities and Characteristics:

                a.  Configuration: spaced to achieve matched
                    precipitation .

                b.  Flow: **.**21 gpm to 5.32 gpm.

                c.  Arc: Full, half, or quarter as needed, and
                    adjustable -- Rainbird VAN Series Nozzles circle.

                d.  Radius: 3-18 feet.

                e.  Mounting Height: 6 - 18 inch pop-up installed at
                    grade

                f.  Inlet: ½ inch

        F.  Plastic Tree Bubblers

            1.  Manufacturers: Subject to compliance with requirements,
                provide products by the following manufacturers:

                a.  Rainbird -- 1404 series

                b.  Hunter Industries

            2.  Description:

                a.  Body Material: ABS or other plastic.

                b.  Pattern: Pressure compensating full circle bubbler.

            3.  Capacities and Characteristics:

                a.  a\. Configuration: two per tree

                b.  Flow: .25 gpm to 2 gpm.

                c.  Arc: Full circle.

                d.  Radius: As per Drawings and irrigation
                    specifications.

                e.  Mounting Height: flush with finish grade on pop-up
                    body.

                f.  Inlet: NPS ½ inch (DN 15)

    13. []{#__RefHeading___Toc178050657 .anchor}DRIP IRRIGATION
        SPECIALTIES

        A.  Manufacturers: Subject to compliance with requirements,
            provide products by one of the following:

            1.  Aquarius Brands, Inc.

            2.  Olson Irrigation Systems.

            3.  Rain Bird Corporation.

        B.  Multiple-Outlet Emitter Systems: Emitter with tubing and
            button-type outlets.

            1.  Emitter: With multiple outlets to deliver water to
                remote outlets.

                a.  Body Material: Plastic.

                b.  Outlet Caps: Plastic, for outlets without installed
                    tubing.

                c.  Operation: Automatic pressure compensating.

                d.  Emitters: Devices to deliver water at approximately
                    15-30 psi.

                e.  Option: Pressure regulating

            2.  Tubing: PE or PVC; 1/8" inch (3mm) minimum ID.

            3.  Capacities and Characteristics:

                a.  Emitter:

                    1.  Flow: As per drawings and irrigation schedule.

                    2.  Number of Outlets: To be determined by the
                        Architect/Designer.

                    3.  Rainbird XERI --BIRD 8 X BD-80 or XBD- PRO

                    4.  Retain and copy subparagraph below for each
                        emitter.

        C.  Drip Tubes with Direct-Attached Emitters:

            1.  Tubing: Flexible PE or PVC with plugged end.

            2.  Emitters: Devices to deliver water at approximately
                15-30 psi.

                a.  Body Material: PE or vinyl, with flow control.

                b.  Mounting: Inserted into tubing at set intervals.

            3.  Capacities and Characteristics:

                a.  Tubing Size: 1/8 inch.

                b.  Length: Various.

                c.  Emitter Spacing: to be determined.

                d.  Emitter Flow: 1/2 gph - 2 gph .

        D.  Off-Ground Supports: Plastic stakes.

        E.  Application Pressure Regulators: Brass or plastic housing,
            NPS 3/4 (DN20), with corrosion-resistant internal parts;
            capable of controlling outlet pressure to approximately 20
            psi . In line pressure regulators for ¾" inch or 1" inch
            lines. Inlet pressure from 10-150 psi.

        F.  Filter Units: Brass or plastic housing, with
            corrosion-resistant internal parts; of size and capacity
            required for devices downstream from unit.

        G.  Air Relief Valves: Brass or plastic housing, with
            corrosion-resistant internal parts.

    14. []{#__RefHeading___Toc178050658 .anchor}CONTROLLERS

        A.  Automatic Controller

            1.  Calsense Controller ET-2000.

            2.  Stations: size as indicated on Contract Drawings.
                Designer shall consider future landscape adjacencies.

            3.  Controller shall be equipped with a freeze sensor: a
                single moisture sensor per irrigation zone as indicated
                on Contract Drawings and grounding rod.

            4.  Communication Options:

                a.  F

                b.  LR with Sandia Frequency -- 422.175 MHz

                c.  RR

            5.  Controller Enclosure

                a.  Wall Mount: shall be installed in standard
                    two-cabinet application; housing the controller and
                    transient protection board in separate cabinets.
                    Provide stub-out to roof top for antenna.

                b.  Pedestal Mount: use a heavy-duty Stainless Steel
                    enclosure with radio antenna pre-mounted (Model
                    SSE-R).

        B.  Wiring

            1.  Provide #14 AWG \[min. ga.\], type UF, single conductor,
                solid copper wire, color-coded wiring to electric
                control valves from automatic controller. Wire shall be
                UL approved for direct underground burial. Exposed
                wiring leading to controller shall be in a rigid
                electrical metallic approved tubing. Multi-strand wire
                is not acceptable.

            2.  Provide a single wire to each solenoid from controller
                and a common neutral wire to all solenoids from
                controller as power supply.

            3.  Provide two extra zone wires and one extra common wire
                to furthest valve location with 36-inch loops in
                standard size valve box.

            4.  Indicate wire path and size on Contract Drawings.

            5.  Refer to the Facilities Design Manual for additional
                requirements.

        C.  Dry Splice Connectors

            1.  Rainbird Snap-Tite wire connectors or Spears DS-400
                Dri-Splice connectors or approved equal.

        D.  Freeze Sensor

            1.  Calsense compatible

        E.  Soil Moisture Sensor

            1.  As manufactured by Calsense.

    15. []{#__RefHeading___Toc178050659 .anchor}BOXES FOR AUTOMATIC
        CONTROL VALVES

        A.  Plastic Boxes:

            1.  Manufacturers: Subject to compliance with requirements,
                provide products by one of the following

                a.  Carson/Brooks, Carson Industries LLC.

            2.  Description: Box and cover, with open bottom and
                openings for piping; designed for installing flush with
                grade.

                a.  Size: 17"x 30" inch minimum size All valve boxes
                    shall be sized to allow for ease of maintenance
                    access

                b.  Shape: Rectangular.

                c.  Sidewall Material: HDPE.

                d.  Cover Material: HDPE.

                    1.  Lettering: \"Irrigation Valve \# embossed on the
                        top**.**\"

        B.  Polymer-Concrete Boxes:

            1.  Manufacturers: Subject to compliance with requirements,
                provide products by one of the following:

                a.  Carson Industries LLC.

            2.  Description: Box and cover, with open bottom and
                openings for piping; designed for installing flush with
                grade.

                a.  Size: As required for valves and service.

                b.  Shape: \[Round\] \[Square\] \[Rectangular\].

                c.  Sidewall Material: Polymer concrete with lateral and
                    vertical sidewall design loading of 15,000 lb (6800
                    kg)\] minimum over 10"x 10" inches (254 x 254 mm)
                    square.

                d.  Cover Material: \[Polymer concrete\] \[Reinforced
                    polymer concrete\] with cover design loading of
                    15,000 lb (6800 kg)\] minimum over 10" x 10" inches
                    (254 x 254 mm) square.

                    1.  Lettering: \"**VALVE BOX - IRRIGATION**\"

        C.  Drainage Backfill: Cleaned gravel or crushed stone, graded
            from ¾" inch (19 mm) minimum to 3" inches (75 mm) maximum.

3.  []{#__RefHeading___Toc178050660 .anchor}EXECUTION

    1.  []{#__RefHeading___Toc178050661 .anchor}EARTHWORK

        A.  Excavating, trenching, and backfilling are specified in
            Section 02200, \"Earthwork.\"

        B.  Install warning tape directly above pressure piping, 6"
            inches (300 mm) below finished grades, except 6" inches
            (150 mm) below subgrade under pavement and slabs.

        C.  Manual Drain Pockets: Excavate to sizes indicated. Backfill
            with cleaned gravel or crushed stone, graded from ¾" to 1 ½"
            inches (19 to 75 mm)\], to 36" inches (300 mm) below grade.
            Cover gravel or crushed stone with sheet of weed barrier
            fabric and backfill remainder with excavated material.

        D.  Provide minimum cover over top of underground piping
            according to the following:

            1.  Irrigation Main Piping: Minimum depth of 24" inches
                (900 mm) below finished grade, or not less than 12"
                inches (450 mm) below average local frost depth,
                whichever is deeper.

            2.  Circuit Piping: 18" inches (300 mm).

            3.  Drain Piping: 18" inches (300 mm).

            4.  Sleeves: 24" inches (600 mm) for mains, 18" inches for
                laterals.

        E.  Trenching:.

            1.  Stake out all sprinkler head and valve locations prior
                to trenching for review and approval by the SCO.

            2.  Excavate trenches straight and true with bottom
                uniformly sloped to low points. Make excavations of
                sufficient depth and width to permit proper handling and
                installation of the pipe and fittings. Accurately trim
                trenches to provide a uniform bed, free from loose soil,
                rocks, debris, and other sharp edged objects before
                installing pipe and fittings. In areas where trees are
                present, adjust trench location beyond the drip line of
                the trees.

            3.  Trench depths in rocky areas shall be 6" inches below
                required depth to allow for pipe bedding. Pipe installed
                in rocky soil shall be bedded in 6" inches of sand.

            4.  Trench widths shall allow a minimum of 4" inches between
                pipes laid in the same trench.

            5.  Provide a minimum of 24" inches and a maximum of 26"
                inches of cover for all constant pressure mainline.
                Provide a minimum of 18" inches and a maximum of 20"
                inches of cover for all mainline located downstream of
                the master valve. Provide a minimum of 18 inches and a
                maximum of 20" inches of cover for all lateral lines not
                under constant pressure. Provide a minimum of 6" inches
                of cover for all ½" inch distribution tubing.

            6.  Keep bottom of trench or excavation free and clear of
                water.

            7.  Where existing pavement must be cut to install landscape
                irrigation system, saw-cut smoothly to straight lines 6"
                inches wider than trench. Concrete sidewalks, curb &
                gutter, shall be removed to the nearest joint or saw-cut
                as directed by the SCO.

                a.  Repair and replace pavement cuts, sidewalks, curb &
                    gutter with equivalent materials and finishes --
                    match existing. Refer to Section \[2\] and Standard
                    Detail WU3001 for patching.

    2.  []{#__RefHeading___Toc178050662 .anchor}PREPARATION

        A.  Installation

            1.  General

                a.  Prior to installing irrigation heads, stake or
                    otherwise locate trees and shrub planting areas.
                    Avoid laying irrigation lines in root ball zone.

                b.  Install irrigation material and equipment and
                    provide necessary hardware in accordance with the
                    Contract Drawings.

                c.  All connections to the SNL water distribution system
                    must comply with SNL's Standard Specification
                    Section 02665 -- Underground Water Lines for
                    Domestic & Fire Protection Systems.

            2.  PVC Pipe

                a.  Main Line: Verify static water pressure at PoC with
                    pressure noted on Contract Drawings. Notify the SCO
                    with any discrepancies prior to proceeding.

                b.  Cut pipe square with the axis, using a fine-tooth
                    hand saw, or ratcheting PVC cutter. Blade edge of
                    cutter shall be straight and sharp to assure square
                    burr-free cuts through PVC pipe. Cutter shall have a
                    pipe supporting plate that adjusts to PVC size, and
                    aids in eliminating pipe deformation and cracking.
                    Remove all burrs prior to solvent welding.

                c.  Inside of pipes shall be clean and free of dirt,
                    debris, and any foreign matter.

                d.  Apply cleaner and solvent in accordance with ASTM D
                    2855 and manufacturer's recommendations.

                e.  All piping in planters is to rest on a gravel
                    filtration layer and is to be placed prior to
                    placement of soil.

                f.  Cover and protect open pipe ends, fixtures and
                    equipment from dirt, water, and chemical or
                    mechanical damage during installation.

                g.  Do **[not]{.underline}** lay pipe in water or in
                    trench when weather conditions are unsuitable for
                    work or when temperature is 32^0^ F or below. Pump
                    out or otherwise remove water encountered or
                    accumulated in excavation to keep the bottom of the
                    trench or excavation free and clear of water during
                    installation.

                h.  Compression or flow span couplings are
                    **[not]{.underline}** permitted.

                i.  Avoid having irrigation pipe crossovers. When pipes
                    cross there shall be a minimum vertical clearance of
                    4" inches between the pipes and trenching shall be
                    adjusted accordingly to provide required cover.

                j.  Vertical stacking of irrigation lines is
                    **[not]{.underline}** permitted. Where pipes are
                    laid in the same trench there shall be a minimum
                    horizontal separation of 4" inches between pipes.

                k.  There shall be a minimum separation between fittings
                    used on any single piece of pipe of 3" inches
                    between fittings 1 ½" inches or less and 6" inches
                    between fittings 2" inches and larger.

                l.  Saddle taps are **[not]{.underline}** permitted on
                    lines greater than 2" inches. Refer to the Sandia
                    Specification Section 02665 -- Underground Water
                    Lines For Domestic & Fire Protection Systems.

                m.  Drain entire system to a manual drain valve(s)
                    placed at the low point(s) in the system. Drain
                    valve shall be installed on lines of nominal pipe
                    size of 1½" inches or less.

                n.  Install drain valve in a standard-body plastic valve
                    box with locking cover and sump pit. Drain‑gravel
                    backfill shall be 1-cubic foot of cleaned gravel or
                    crushed stone, graded from ¾ inch min. to 1½"inch
                    maximum.

                o.  Thoroughly clean fixtures, exposed materials, and
                    equipment.

                p.  Install detectable Line Marking Tape meeting the
                    requirements in SNL's Standard Specification 02200
                    Earthwork on all main lines \[lines \> ¾"inch\].
                    Place tape 6 "inches above piping.

    3.  []{#__RefHeading___Toc178050663 .anchor}PIPING INSTALLATION

        A.  Location and Arrangement: Drawings indicate location and
            arrangement of piping systems. Install piping as indicated
            unless deviations are approved on Coordination Drawings.

        B.  Lay piping on solid subbase, uniformly sloped without humps
            or depressions.

        C.  Revise first two paragraphs below to suit Project; delete if
            not required.

        D.  Install (PRV's) water regulators with shutoff valve and
            strainer on inlet and pressure gage on outlet. Install
            shutoff valve on outlet. Install aboveground or in
            control-valve boxes.

        E.  Water Hammer Arresters: Install between connection to
            building main and circuit valves aboveground or in
            control-valve boxes.

        F.  Install piping in sleeves under parking lots, roadways, and
            sidewalks.

        G.  Install sleeves made of Class 200 PVC pipe and socket
            fittings, and solvent-cemented joints. Two times the size of
            the pipe sleeved.

        H.  Install transition fittings for plastic-to-metal pipe
            connections according to the following:

            1.  Underground Piping:

                a.  NPS 1-1/2 (DN40) and Smaller: Plastic-to-metal
                    transition fittings.

                b.  NPS 2 (DN50) and Larger: AWWA transition couplings.

            2.  Aboveground Piping:

                a.  NPS 2 (DN50) and Smaller: Plastic-to-metal
                    transition \[**fittings**\] \[**unions**\].

                b.  NPS 2 (DN50) and Larger: Use dielectric flange kits
                    with one plastic flange.

        I.  Install dielectric fittings for dissimilar-metal pipe
            connections according to the following:

            1.  Underground Piping:

                a.  NPS 2 (DN50) and Smaller: Dielectric coupling or
                    dielectric nipple.

                b.  NPS 2-1/2 (DN65) and Larger: Prohibited except in
                    control-valve box.

            2.  Piping in Control-Valve Boxes:

                a.  NPS 2 (DN50) and Smaller: Dielectric union.

                b.  NPS 2-1/2 to NPS 4 (DN65 to DN100): Dielectric
                    flange.

                c.  NPS 5 (DN125) and Larger: Dielectric flange kit.

    4.  []{#__RefHeading___Toc178050664 .anchor}JOINT CONSTRUCTION

        A.  Threaded Joints: Thread pipe with tapered pipe threads
            according to ASME B1.20.1. Cut threads full and clean using
            sharp dies. Ream threaded pipe ends to remove burrs and
            restore full ID. Join pipe fittings and valves as follows:

            1.  Apply appropriate tape or thread compound to external
                pipe threads unless dry seal threading is specified.

            2.  Damaged Threads: Do not use pipe or pipe fittings with
                threads that are corroded or damaged. Do not use pipe
                sections that have cracks or open welds.

        B.  Flanged Joints: Select rubber gasket material, size, type,
            and thickness for service application. Install gasket
            concentrically positioned. Use suitable lubricants on bolt
            threads.

        C.  Ductile-Iron Piping Gasketed Joints: Comply with AWWA C600
            and AWWA M41.

        D.  Copper-Tubing Brazed Joints: Construct joints according to
            CDA\'s \"Copper Tube Handbook,\" using copper-phosphorus
            brazing filler metal.

        E.  Copper-Tubing Soldered Joints: Apply ASTM B813
            water-flushable flux to tube end unless otherwise indicated.
            Construct joints according to ASTM B828 or CDA\'s \"Copper
            Tube Handbook,\" using lead-free solder alloy (0.20% percent
            maximum lead content) complying with ASTM B32.

        F.  PE Piping Fastener Joints: Join with insert fittings and
            bands or fasteners according to piping manufacturer\'s
            written instructions.

        G.  PE Piping Heat-Fusion Joints: Clean and dry joining surfaces
            by wiping with clean cloth or paper towels. Join according
            to ASTM D2657.

            1.  Plain-End PE Pipe and Fittings: Use butt fusion.

            2.  Plain-End PE Pipe and Socket Fittings: Use socket
                fusion.

        H.  PVC Piping Solvent-Cemented Joints: Clean and dry joining
            surfaces. Join pipe and fittings according to the following:

            1.  Comply with ASTM F402 for safe-handling practice of
                cleaners, primers, and solvent cements.

            2.  PVC Pressure Piping: Join schedule number, ASTM D1785,
                PVC pipe and PVC socket fittings according to ASTM
                D2672. Join other-than-schedule-number PVC pipe and
                socket fittings according to ASTM D2855.

            3.  PVC Nonpressure Piping: Join according to ASTM D2855.

    5.  []{#__RefHeading___Toc178050665 .anchor}THRUST BLOCKS (TB)

        A.  Install thrust blocks on all lines 2 inches or larger. Size
            TBs in accordance with ASAE standard S376.1. TBs shall be
            installed in place against undisturbed earth. Thrust blocks
            shall be constructed at all direction changes, size changes,
            valves, and terminations or at any other points of the
            system that will result in an unbalanced thrust line. Refer
            to Standard Detail WU5005STD -- Water Line Thrust
            Details/Restraint Details.

    6.  []{#__RefHeading___Toc178050666 .anchor}VALVE INSTALLATION

        A.  Underground Curb Valves: Install in curb-valve casings with
            tops flush with grade.

        B.  Above ground Valves: Install as components of connected
            piping system.

        C.  Pressure-Reducing Valves: Install in boxes for automatic
            control valves or aboveground between shutoff valves in Hot
            box.

        D.  Throttling Valves: Install in underground piping in boxes
            for automatic control valves.

        E.  Drain Valves: Install in underground piping in boxes for
            automatic control valves.

        F.  Setting Valves:

            1.  Do not locate valves beneath paved surfaces.

            2.  Install valves in a level position.

            3.  Install all valves, except backflow preventer, with
                minimum 24" inches cover. Refer to Section 15051, Piping
                Systems, for backflow preventer installation.

            4.  Install an isolation valve at the PoC, and at loop or
                zone isolation points.

            5.  Install an isolation valve upstream of each electric
                control valve. Isolation valve may be installed in same
                valve box with automatic valve.

            6.  Provide true union ball valves where piping is 2" inches
                or less.

            7.  Provide push on ring and gasket type isolation valves
                where piping is 2½" inches or larger.

            8.  Install rubber seated valve or true union ball valve as
                needed. At a minimum, one shall be installed at every
                hundred feet of mainline in a 12"inch valve box with
                3/8" inch gravel.

            9.  Manual Drain Valves: install at end and low points of
                the irrigation system. Additional manual drain valves
                must be installed if there are multiple low points along
                the system's run of pipe where water collection may
                occur.

            10. Install Reduced Pressure or Pressure Vacuum Breakers in
                accordance with Section 15051, Piping Systems.

    7.  []{#__RefHeading___Toc178050667 .anchor}SPRINKLER INSTALLATION

        A.  Install sprinklers after hydrostatic test is completed.

        B.  Install sprinklers at manufacturer\'s recommended heights.

        C.  Locate part-circle sprinklers to maintain a minimum distance
            of 6" inches from walls and other boundaries such as curbs
            and walks.

        D.  Sprinkler Heads,

            1.  Fully flush entire system prior to the installation of
                sprinkler and bubbler heads. Cap risers as deemed
                necessary to achieve adequate flushing.

        E.  Bubblers:

            1.  Bubblers shall be spaced 180^o^ apart and 12" inches
                from edge of root ball. On sloped surfaces -- install
                bubbler on uphill side of plant material to be
                irrigated.

        F.  Emitters

            1.  Do not bunch emitters. Space about plant material to
                provide even irrigation distribution and 6" inches from
                edge of root ball.

    8.  []{#__RefHeading___Toc178050668 .anchor}DRIP IRRIGATION
        SPECIALTY INSTALLATION

        A.  Install multiple-outlet emitter systems with tubing to
            outlets. Plug unused emitter outlets. Install emitters on
            multiple-outlet device vs. tubing end outlets on off-ground
            supports at height indicated.

        B.  Install drip tubes with direct-attached emitters on ground.

    9.  []{#__RefHeading___Toc178050669 .anchor}VALVE BOX INSTALLATION

        A.  Valve boxes shall be installed as shown on the detail
            drawings and located as shown on the drawings.

        B.  Valve boxes shall be installed at and level with finish
            grade.

        C.  Valve boxes shall be engraved or embossed on the top side of
            the lid with the contents of each valve box. Letters and
            numbers shall be no smaller than 1 inch and no larger than 1
            ½" inches

            1.  Control Valves -- brand "Zone Valve" and the \# of that
                valve into the lid.

            2.  Quick coupling valve -- Brand "Q C " into the lid

            3.  Wire splices Brand "WS" into the lid.

            4.  Isolation valves -- "IV"

            5.  Drain Valves -- "DV".

            6.  Air release -- "AR"

    10. []{#__RefHeading___Toc178050670 .anchor}AUTOMATIC
        IRRIGATION-CONTROL SYSTEM INSTALLATION

        A.  Equipment Mounting: No interior mounts

        B.  Equipment Mounting: Install exterior freestanding
            controllers on precast concrete bases or wall mounts.

            1.  Place and secure anchorage devices. Use setting
                drawings, templates, diagrams, instructions, and
                directions furnished with items to be embedded.

            2.  Install anchor bolts to elevations required for proper
                attachment to supported equipment.

            3.  Controller Enclosure

                a.  Wall mount shall be installed in standard
                    two-cabinet application; housing the controller and
                    transient protection board in separate cabinets.

                b.  Pedestal Mount: use a heavy-duty Stainless Steel
                    enclosure with radio antenna pre-mounted (Model
                    SSE-R).

        C.  Install control cable in same trench as irrigation piping
            and at least 2" inches (51mm) below \[**or beside**\]
            piping. Provide conductors of size not smaller than
            recommended by controller manufacturer. Install cable in
            separate sleeve under paved areas.

        D.  Wiring

            1.  Keep splicing to a minimum. All continual wire shall be
                of one color. Splicing of different color wires is
                **[not]{.underline}** permitted. Only one splice per any
                given run is permitted. All splicing, connectors, and
                splice boxes shall be of a water proof type. All splices
                shall be placed in a wire-splice-box.

            2.  Provide 24" inch expansion coils in wiring at each wire
                connection or change in wire direction and at remote
                control valves

            3.  Provide 24" inch expansion loop at remote control
                valves.

            4.  Install 24-volt control valve wiring in same trench as
                main line 2 inches below and to one side of irrigation
                line. Tape together at 10 foot intervals. Run control
                wiring through conduit in areas designated on the
                Contract Drawings. Direct burial is acceptable where
                approved by the SCO. Run control valve wiring in lateral
                trench in same manner as in main line trench
                **[only]{.underline}** when it is not possible to use
                main line trench.

                a.  Do not install run power wiring in the same conduit
                    as control wiring.

                b.  Indicate wire path and size on Contract Drawings.

                c.  Control wires shall be identified with E-Z Coder WDR
                    series tape. Identify wires at all splices, valves,
                    and at controller. Valves shall be numbered
                    according to the Contract Drawings.

                d.  Redundant control wiring shall be color coded as
                    follows: white-common, blue-master valve, red-zone
                    valves, yellow and orange -- flow meter.

    11. []{#__RefHeading___Toc178050671 .anchor}FIELD QUALITY CONTROL

        A.  Inspection -- Test & Flushing:

            1.  Upon completion of the irrigation system, the entire
                system shall be flushed, tested, and inspected. Notify
                the SCO in writing 48 hours in advance prior to start of
                testing.

            2.  Work done which fails to comply with requirements of
                this Specification or Contract Drawings will be rejected
                and shall be immediately removed from the site.
                Defective work or materials shall be corrected
                satisfactorily.

            3.  Flushing: Prior to testing, the entire System shall be
                partially backfilled, leaving all joints and connections
                exposed and the entire System shall be flushed clear of
                all debris, dirt and foreign matter.

            4.  Testing: A hydrostatic pressure test of main and lateral
                lines at 100 psi for one hour is required.

                a.  Center -- load the mainline piping with a small
                    amount of backfill material, leaving joints and
                    connections exposed. Cap all outlets and
                    hydrostatically test the normally pressurized part
                    (main line) of the system at a pressure of 100 psi.
                    Maintain pressure test for one hour.

                b.  Test laterals in the same manner used for main line.
                    Leave joints exposed for inspection during the
                    pressure test. Do **[not]{.underline}** install
                    swing joints prior to pressure test. Maintain
                    pressure tests on plastic pipe for not less than one
                    hour. Do **[not]{.underline}** use air pressure
                    test.

                c.  If pressure loss or leaks occurs, affected pipe line
                    or connections shall be repaired and tests shall be
                    repeated until the entire system has been proven
                    tight. Conceal lines passing hydrostatic pressure
                    test the same day if nighttime temperatures are to
                    be 32° Fahrenheit and below. Install pressure gauges
                    on the line being tested.

            5.  Back Flow Testing:

                a.  Provide test results of RP or PVB testing to SCO.

            6.  Irrigation System Audit:

                a.  Provide results of irrigation system audit when
                    required as per submittals section to the SCO.

            7.  Following System's testing and adjustments operate the
                entire installation to demonstrate the complete and
                successful operation of all equipment. Re-adjust as
                required, all valves, sprinkler heads, and bubblers for
                proper operating pressures, uniform coverage and even
                flow.

        B.  Any irrigation product will be considered defective if it
            does not pass tests and inspections.

        C.  Prepare test and inspection reports.

    12. []{#__RefHeading___Toc178050672 .anchor}BACKFILLING

        A.  Prior to backfilling trenches, contact the SCO to have
            valves and other landscape equipment located by Global
            Positioning System (GPS). This service can be obtained by
            paging 505.530.4477 to coordinate the GPS Utility Position
            Survey.

        B.  After pipe joints have been visually inspected, flushing and
            pressure testing performed and accepted, and GPS procedure
            has been accomplished, and backfilling may begin.

        C.  Begin backfilling when the piping is not in an expanded
            condition due to heat or pressure. Cool piping by operating
            the system for a short period of time or by backfilling in
            the cool a.m. hours of the day.

        D.  Backfill material shall be free from construction rubbish,
            rock, large stones, brush, sod, frozen material or other
            unsuitable substances. When material from excavation or
            trenching is unsuitable for use as backfill it shall be
            disposed of, and suitable material which is capable of
            attaining the required relative density shall be furnished.

    13. []{#__RefHeading___Toc178050673 .anchor}COMMISSIONING

        A.  Landscape & Irrigation Commissioning shall be the
            responsibility of the General Contractor, the Landscape
            Contractor, the SCO, and the Landscape Architect. At a
            minimum, the following irrigation equipment and systems
            shall be commissioned:

            1.  24v Control Wire Installation

            2.  Hydrostatic Pressure Test -- Main, Laterals, & Electric
                Control Valves. Master Valve included.

            3.  Flow meter

            4.  Automatic Irrigation Controller -- Installation &
                Operation.

            5.  Local and remote radio operation

            6.  Sprinkler, Drip, & Bubbler Heads -- Placement, Coverage,
                & Operating Pressures prior to planting.

            7.  Backflow Preventer

        B.  The Contractor shall complete the following documents:

            1.  Irrigation System Check List

            2.  Functional Performance Check List

    14. []{#__RefHeading___Toc178050674 .anchor}ADJUSTING

        A.  Adjust settings of controllers.

        B.  Adjust automatic control valves to provide flow rate at
            rated operating pressure required for each sprinkler
            circuit.

        C.  Adjust sprinklers and devices, except those intended to be
            mounted aboveground, so they will be flush with, or not more
            than ¼" inch above, finish grade.

    15. []{#__RefHeading___Toc178050675 .anchor}DEMONSTRATION and
        MAINTENANCE

        A.  Train Owner\'s maintenance personnel to adjust, operate, and
            maintain automatic control valves and controllers.

        B.  Maintain and adjust the irrigation system in coordination
            with the plant materials requirements until substantial
            completion. Irrigation maintenance shall include repair and
            replacement of parts or workmanship not operating properly
            and adjustment of timing and coverage of heads.

            1.  Provide site consultation with Sandia's G&RS
                representative.

        C.  Record Drawings and Controller Chart:

            1.  Maintain a complete set of up-to-date Red-Line drawings
                and provide a copy to the SCO.

            2.  Prepare a controller chart showing:

                a.  Location of all sections, valves, lateral lines, and
                    routes of control wires.

                b.  Identify all valves by size, station, and number.

    16. []{#__RefHeading___Toc178050676 .anchor}FINAL INSPECTION AND
        ACCEPTANCE.

        A.  Upon written request by the Contractor, five days in advance
            of the end of the maintenance and guarantee period and after
            substantial completion, an inspection of the irrigation
            system will be made by the SCO. The Contractor will be
            notified in writing of the Final Acceptance, or of work
            required. The Contractor will be responsible for all
            maintenance until all punch list items are completed and
            Final Acceptance is granted at which time Sandia will assume
            responsibility.

        B.  Where inspected irrigation work does not comply with the
            requirements of the Specification and Contract Drawings,
            replace rejected work and continue specified maintenance
            until re-inspected by the SDR and the SCO and the work is
            found to be acceptable. Promptly remove rejected equipment.

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