Specification SECTION 32 84 00 PLANTING IRRIGATION.docx

SECTION 32 84 00

PLANTING IRRIGATION

GENERAL

SYSTEM DESCRIPTION

Contractor is responsible for:

Providing programmable fully automatic irrigation system being modified as indicated on drawings.

Furnish all labor, materials, supplies, equipment, tools, and transportation.

Perform all operations in connection with and reasonable incidental to the complete installation of the irrigation system, and guarantee/warranty as shown on the drawings, the installation details, and specific herein. Items of work specifically included are:

Procurement of all applicable licenses, permits, and payment of required fees.

Coordination of utility locates. (Call Before You dig”) Manufacturer of primary irrigation equipment including but not limited to sprinklers, control valves, and decoders shall be compatible with the existing components on the cemetery.

DEFINITIONS

Lateral: Piping located downstream from control valves to sprinklers. Piping is under pressure during flow.

Mainline: Piping located downstream from point of connection to water distribution piping to, and including, control valves. Piping is under system pressure.

Low Voltage: As defined in NFPA 70 for circuits and equipment operating at less than 50 Volts or for remote control, signaling powerlimited circuits.

Hardscape: Site roads, walks, walls, or any other surface improvements for which removal for excavation to perform maintenance or replacement of the irrigation system pipes, or wires will require disturbance of other than landscape materials.

RE: Contracting Officer's Representative (COR) COR: Contracting Officer's Technical Representative

APPLICABLE PUBLICATIONS

The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the test by the basic designation only.

American Society of Mechanical Engineers (ASME):

American Society for Testing and materials (ASTM):

American Water Works Association (AWWA):

C90120 Polyethylene (PE) Pressure Pipe and Tubing, 13 mm (0.5 inches) through 76 mm (3 inches), for Water Service Irrigation Association (IA):

Technical Resources, Irrigation Best Practices & Standards National Electric Code: (latest edition 2024) Uniform Plumbing Code: (latest edition 2024)

PREINSTALLATION MEETINGS

Conduct preinstallation meeting at project site before beginning Work of this section.

Required Participants:

Re/COR Contractor Installer Other installers responsible for adjacent and intersecting work.

Meeting Agenda: Distribute agenda to participants minimum 3 days before meeting.

Installation schedule Installation sequence Preparatory work Protection before, during, and after installation Installation Inspecting and testing Other items affecting successful completion Document and distribute meeting minutes to participants to record decisions affecting installation.

SUBMITTALS

Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

Submit product data as one package for each type of product indicated on the plans and these specifications. Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories. Highlight items being supplied on the catalog cut sheets. Incomplete submittals will be returned to the Contractor without review for revision and resubmittal.

Provide qualification data for a qualified irrigation installer.

Submittal Drawings:

Shop Drawings: Show size, configuration, fabrication, and installation details.

Show any other detailing through shop drawings indicated in the Drawings.

Manufacturer's Literature and Data:

Submit product data:

Description of each product.

Provide digital copies of irrigation information in PDF format with table of contents and index sheet.

Provide manufacturers’ catalog cut sheets, specifications, installation instructions, and operating instructions for equipment shown.

Materials List:

Valves Sprinkler irrigation components Controller system components Pipe and fittings Mainline components Electrical components Provide all other irrigation equipment shown or described on Drawings and within these specifications.

Test Reports:

Certify products comply with specifications.

Submit report of testing following completion of each test listed in Part 3 of these specifications.

AS-BUILT RECORD DRAWINGS

Maintain a complete set of “as-built” drawings and correct daily to show changes in locations of all pipe, two-wire path when not located next to mainline, valves, and related irrigation equipment. Show valves with dimensions to reference points.

Produce and maintain a complete set of irrigation system "as-built" drawings that show the actual locations for the pipes, bends, fittings, wiring and appurtenances. The location for the underground materials as well as the depth shall be indicated, and curved pipe installations shall be so indicated, and bends and fittings shall have swing ties showing the locations, using physical features.

The "as-built" drawing for the irrigation system wiring shall show the routing of the wires from controller to corresponding operational elements, and wire colors and numbers and color of spare wires shall be indicated. The wiring diagram for the irrigation system shall include the routing of the power lines to the equipment as well as the of the grounding equipment.

The actual location of the installed elements on a scaled drawing shall be provided using the enlarged design drawing background to show the actual installation and not the schematic representation of the elements. All sleeves for pipes and/or wires shall be indicated with the size, type of material location and depth indicated on the "As-Built" drawings.

QUALITY ASSURANCE

Manufacturer Qualifications:

Regularly manufactures specified products.

Installer Qualifications:

Regularly installs specified products.

Irrigation Contractor must be a licensed landscape contractor in the State of California.

Irrigation Contractor must have demonstrated, using persons directly employed by the contractor, experience with the installation of at least five (5) similar irrigation systems.

Project Experience List: Provide contact names and addresses for completed projects.

Irrigation Contractor and project superintendent must be certified by control system manufacturer as a certified contractor for installation of control system wiring and grounding systems. Provide documentation from control system manufacturer regarding certification.

HDPE Fusion Technician Requirements:

Each Fusion technician shall be separately qualified to make each type of fusion joint and trained/certified in HDPE fusion. Fusion joint types are butt fusion, saddle fusion, electrofusion, and socket fusion.

Only qualified technicians shall make fuses during construction and during contractor warranty period.

Qualification to make one type of fusion joint shall not qualify a Fusion Technician to make a different type of fusion joint.

Provide documentation of Contractor qualifications with submittals.

Products Criteria:

Multiple Units: When two or more units, same type or class of materials or equipment required, provide compatible products from one manufacturer.

Assembled Units: Manufacturers of equipment assemblies, which use components made by others, assume complete responsibility for final assembled product.

All components of assembled unit need not be products of same manufacturer but component parts which are alike are product of single manufacturer.

Assembled units are compatible with each other and with total assembly for intended service.

Codes and Regulations:

Comply with latest edition of National Electrical Code, Uniform Plumbing Code, and applicable laws and regulations of governing authorities.

WARRANTY

Construction Warranty: FAR clause 52.24621, "Warranty of Construction."

Manufacturer's Warranty: Warrant irrigation materials against material and manufacturing defects.

Warranty Period: One year The Contractor will remedy any defect due to faulty material or workmanship and pay for any damage to other work resulting therefrom within a period of one year from date of final acceptance.

Provide all manufacturers’ and supplier's written guarantees and warranties covering materials and equipment furnished under this Contract.

Make repairs within 72 hours of notification from COR. Fill and repair depressions. Restore landscape, utilities, structures, or site features damaged by the settlement of irrigation trenches or excavations. Repair damage to the premises caused by construction or a defective item.

Replace damaged items with identical materials and methods per contract documents or applicable codes. Make replacements at no additional cost to the contract price.

Warranty applies to originally installed materials and equipment and replacements made during the Warranty period.

GENERAL CONSTRUCTION REQUIREMENTS

Coordinate construction of irrigation system with RE/COR and Cemetery Staff. See irrigation plans and installation details for required coordination efforts related to the installation of specific irrigation components.

Install irrigation components in designated turf/landscaped areas only.

Construction cannot proceed unless staking of irrigation mainline, remote control valve locations, and sprinkler locations are reviewed and accepted by the RE/COR.

PRODUCTS

MATERIALS

Provide new materials without flaws or defects.

Provide each product from one manufacturer.

SUBSTITUTIONS

Unless noted otherwise, use specified equipment. RE/COR must approve equipment prior to construction. The Contractor through written request prior to purchase or installation may request substitutions to the approved equals listed herein. Changes and associated design costs to accommodate alternative equipment are Contractor’s.

Pipe sizes and pressure ratings referenced in the construction documents are a minimum and may be increased at Contractor’s option.

PIPE

Mainline Pipe [76.2 mm (3-inch) and larger]:

High Density Polyethylene (HDPE) pipe: AWWA C901. Pipe and fittings PE 3408 HDPE resin compound meeting cell classification 345434C, ASTM D3350; and Type III, Class C, Category 5, Grade P34, ASTM D1238.

Lateral Pipe: Polyvinyl Chloride (PVC), ASTM D2241, Class 200, SDR21, 1375 kPa (200 psi) pressure rating.

Fittings Mainline Fittings [76.2 mm (3-inch) and larger]:

High Density Polyethylene (HDPE) Fittings:

Butt, HeatFusion Fittings: ASTM D3261.

Socket-Type Fusion Fittings: ASTM D2683 // Acceptable Manufacturer/Model: AquaFuse or approved equal.

Threaded Pipe: Polyvinyl Chloride (PVC), ASTM D1785, PVC 1120, Schedule 80 threaded connections, risers, and swing joints.

Lateral Fittings:

Irrigation Laterals: ASTM D2466 PVC, Schedule 40, solvent welded socket type.

Transition Fittings: HDPE socket fusion to Brass FPT coupling.

Pipe Joining Materials:

Lateral Pipe: ASTM D2466 and D1784 PVC Schedule 40, Type 1, solvent weld fittings.

Primer: ASTM F656.

Solvent Cement: ASTM D2564.

Threaded Pipe: Teflontype tape or Teflon based paste pipe joint sealant. Use nonhardening, nontoxic pipe joint sealant for watercarrying pipes on metal threaded connections.

MAINLINE COMPONENTS

Valve Box (Mainline Components):

Pull/Wire Splice Box:

Materials:

Body: Composite formulation of polyester resin, fiberglass, and calcium carbonate. Density ASTM D1505, 0.96 g/cm3; Tensile Strength’ ASTM D638 (5,500) psi.

Lid: Composite, flush solid. Compressive Strength’ ASTM C170 76 MPa (11,000 psi); Density’ ASTM C128 143 lb/ft3.

Size: 508 mm (20 inches) long by 304.8 mm (12 inches) wide by 304.8 mm (12 inches) deep.

Traffic Rating: ANSI/SCTE-77, Tier 8.

Acceptable Manufacturer/Model: Oldcastle Fibrelyte FL12 or approved equal.

Options:

Aggregate Base: 0.375-inch minus crushed aggregate Valve Box ID: “PB” or “WS” Valve Box Accessories:

Galvanized steel wire mesh fabric: 16 gauge with 12.7 mm (0.5-inch) openings.

Filter Fabric: Spunbound polyester 3.5 oz. per square yard landscape fabric.

Drainage Backfill: Clean gravel or crushed stone, graded from 6 mm (0.25-inch) minimum to 19.1 mm (0.75-inch) maximum.

Aggregate Base: 0.375-inch minus crushed aggregate Valve ID Tag: Standard ID tags (2.25 inches x 2.75-inches) with single side hot-stamped black letters on a yellow background designating controller letter and valve station number in 25.4 mm (1-inch) minimum tall letters.

Acceptable Manufacturer/Model: ‘Christy’ ID.STD.Y1 or approved equal.

Valve Box ID:

HDPE valve boxes, hot brand valve box lid 50.8 mm (2-inch) high, 5 mm (0.1875-inch) deep with permanent white epoxy paint designating equipment, controller, and valve number.

Composite Polymer Concrete valve boxes, install stainless steel valve tag, 76.2 mm (3-inch) tall by 101.6 mm (4-inch) long designating equipment, controller, and valve number.

Waterproof Wire Connector: Direct burial 600 V maximum voltage, UL approved.

Acceptable Manufacturer/Model: 3M DBR/Y-6, Rain Master TW-SPLICE-14 or approved equal.

SPRINKLER IRRIGATION COMPONENTS

Remote Control Valve Assembly:

Remote Control Valve:

Body and Cover: Globe type, heavy construction, manual shutoff and flow control adjustment for manual operation.

Minimum 13.80 bar (200 psi) working pressure.

Straight valve body bonnet with reinforced nylon, trim, and renewable seat.

Fully encapsulated, one-piece solenoid. Both internal and external manual open/close control (internal and external bleed) to manually open and close the valve without electrically energizing the solenoid.

Valve serviceability: From top without removing valve body from system.

Acceptable Manufacturer/Model: Rain Bird PESB Series or approved equal.

Pressure Regulating Module: Provide valve with pressure regulator module capable of regulating outlet pressure between 15 and 100 psi (1.04 and 6.90 bar).

Acceptable Manufacturer/Model: Rain Bird PRS-D or approved equal.

Full Port Bronze Ball Valve with Stainless Trim:

Valve Pressure rating: 41.4 bar (600 psi).

Acceptable Manufacturer/Model: Nibco T-585-66-LF or approved equal.

PVC Union: Schedule 80 threaded union with O-ring seal.

Valve Box Sprinkler Irrigation Components:

Remote Control Valve:

Materials: Composite formulation of polyester resin, fiberglass, and calcium carbonate.

Size: Minimum 609.6 mm (24 inches) long by 355.6 mm (14 inches) wide by 457.2 mm (18 inches) deep.

Lid: Composite, flush solid Aggregate Base: 0.375-inch minus crushed aggregate Valve Box ID: “XXX” Include controller letter and valve number Acceptable Manufacturer/Model: Oldcastle Fibrelyte FL30-18 or approved equal.

Valve Box Accessories:

Galvanized steel wire mesh fabric: 16 gauge with 12.7 mm (0.5-inch) openings.

Filter Fabric: Spunbound polyester 3.5 oz. per square yard landscape fabric.

Support Block: Precast concrete paver, or brick Drainage Backfill: Clean gravel or crushed stone, graded from 6 mm (0.25-inch) minimum to 19.1 mm (0.75-inch) maximum.

Aggregate Base: 0.375-inch minus crushed aggregate Valve ID Tag: Standard ID tags (2.25 inches x 2.75-inches) with single side hot-stamped black letters on a yellow background designating controller letter and valve station number in 25.4 mm (1-inch) minimum tall letters.

Acceptable Manufacturer/Model: ‘Christy’ ID.STD.Y1 or approved equal.

Valve Box ID:

HDPE valve boxes, hot brand valve box lid 50.8 mm (2-inch) high, 5 mm (0.1875-inch) deep with permanent white epoxy paint designating equipment, controller, and valve number.

Composite and Polymer Concrete valve boxes, install stainless steel valve tag, 76.2 mm (3-inch) tall by 101.6 mm (4-inch) long designating equipment, controller, and valve number.

Waterproof Wire Connector: Direct burial 600 V maximum voltage. UL approved.

Acceptable Manufacturer/Model: 3M DBR/Y-6, Rain Master TW-SPLICE-14 or approved equal.

WIRE COMPONENTS

TwoWire Decoder Cable:

Conductor: Tin coated copper, soft drawn bare copper conforming to ASTM B33. Two (2) conductors Solid (14awg minimum).

Insulation: Polyvinyl Chloride (PVC) conforming to UL Standard 493 for TYPE UF rated 60°C.

Outer Jacket: Pressure Extruded High Density PE conforming to ICEA S61402, and NEMA WC5 Jacket Thickness 1.2 mm (3/64-inch) minimum jacket material to completely fill interstices between the two insulated conductors.

Color Coding: Black, Red.

Jacket Color: Continuous color over entire length. (Use a different jacket color for each controller on the project).

Acceptable Manufacturer/Model: Rain Bird Maxi Cable, Paige P7072D or approved equal.

Install wire splices in the specified valve box as indicated on Drawings and according to manufacturer's instructions.

Waterproof Wire Connector: Direct burial 600 V maximum voltage, UL approved.

Acceptable Manufacturer/Model: 3M DBR/Y-6, Rain Master TW-SPLICE-14, Rain Bird WC20 or approved equal.

Splicing Materials: Epoxy waterproof sealing packet.

Two-Wire Field Devices:

Valve Decoder: Solidstate design, housed in a watertight molded plastic housing.

Decoder leads: 18gauge, insulated, stranded copper.

Colors as indicated.

Wire Leads: Minimum of 305 mm (12 inches) long.

Wire Connections: Watertight electrical connections suitable for the wire type being connected.

Provide factory precoded decoders with 1 address activating one remote control valve solenoid.

Acceptable Manufacturer/Model: Rain Bird FD-101TURF or approved equal.

Electrical Conduit and Fittings:

Highimpact Schedule 40 PVC C2000 compound, conforming to the dimensions and tolerances established by ASTM D-1785, UL approved, gray color, size as required.

Fittings will be Schedule 40, Type 1, solvent-weld sweep ells, conforming to ASTM D2466 and D1784.

Pull Rope for Empty Conduits: 0.25-inch diameter, 12strand, 544 kg (1,200 lb.) tensile strength braided polypropylene rope.

Drainage Backfill: Clean gravel or crushed stone, graded from 6 mm (0.25 inches) minimum to 19 mm (0.75-inch) maximum.

Pipe Bedding and Initial Backfill: Clean sand per Section 31 20 00 EARTH MOVING for trenching and backfilling of utilities.

EXECUTION

PREPARATION

Examine and verify substrate suitability for product installation.

Protect existing construction and completed work from damage.

INSPECTIONS AND REVIEWS

Site Inspections:

Verify site conditions and note irregularities affecting work. Report irregularities to COR before beginning work.

Utility Location ("Call Before You Dig"):

Arrange and coordinate underground utility locations with local authorities and cemetery maintenance personnel.

Repair underground utilities damaged during construction with no increase in contract price.

Irrigation System Layout Review: Stake locations of irrigation system components as defined below for COR's review. Notify the COR one week in advance of review. COR will identify and approve modifications during this review.

GENERAL INSTALLATION

Install products according to manufacturer's instructions.

When manufacturer's instructions deviate from specifications, submit proposed resolution for COR consideration.

AVAILABILITY AND USE OF UTILITY SERVICES

Upon completion of the irrigation system or completion of portions thereof, the Contractor through the permanent connection of the new irrigation system to the existing irrigation mainline, shall be provided water for flushing and testing of the new irrigation system. Once the system is deemed operable and approved and prior to the final inspection, the Contractor may use water at no cost through the irrigation system for establishing turf and maintaining plant material. No other expressed or implied uses of government furnished water exist.

LAYOUT OF WORK

General Construction Requirements:

Coordinate construction of irrigation system with COR and Cemetery Maintenance Contractor. Coordinate temporary shut-down of existing system with Cemetery Maintenance Contractor prior to construction. Disturbance to cemetery operations must be minimized. See irrigation plans, installation details, and specifications sections for required coordination efforts related to the installation of specific irrigation components.

Connections to the existing mainline must be approved by the COR while minimizing the impact on the operation of the existing irrigation system.

Stake out irrigation system. Items staked include mainline components, lateral pipe, and remote control valves.

When staked irrigation components conflict with utilities or other components or site features, coordinate rerouting of components with COR. To comply with requirements of the following conditions specified herein this specification section to obtain compliance of regulatory regulations.

Layout work as shown on the drawings.

Determine the exact location for the assemblies by verifying actual field conditions. Stake the locations in the field and coordinate with the Contracting Officer’s Representative (COR) before installation. Construction cannot proceed unless staking of automatic control valve locations and sprinkler locations are reviewed and accepted by the COR.

Run irrigation lines, control wires and power wires in trenches as indicated on Drawings or as typical for industry standards, when not indicated.

EXCAVATION, TRENCHING, AND BACKFILLING

Perform excavation, trenching, and backfilling for sprinkler system as specified in Section 31 20 11, EARTHWORK (Short Form) and as indicated on Drawings.

Excavate to permit the pipes to be laid at the intended elevations and to permit workspace for installing connections and fittings.

Excavated material is generally satisfactory for backfill. Backfill will be free from rubbish, vegetable matter and stones larger than 2-inches in maximum dimension. Remove material not suitable for backfill. Backfill placed next to pipe will be free of sharp objects that may damage the pipe.

Do not lay pipe on unstable material, in wet trenches or when trench or weather conditions are unsuitable for the work.

Do not work over or walk on pipe in trenches until covered by layers of earth well tamped in place to a depth of 3300 mm (12 inches) over pipe.

Minimum Cover(distance from top of pipe to finish grade):

30-inches over irrigation mainline pipe.

18-inches over irrigation lateral pipe to sprinklers in in-ground cremains burial sections.

18-inches over PVC irrigation lateral pipe to sprinklers, bubblers, or drip in non-burial areas.

18-inches over control wire when not in common trench with mainline or lateral piping.

4-inches minimum horizontal separation between pipes and wiring in a common trench.

PIPE AND FITTING ASSEMBLY

General:

Keep pipe free from dirt and pipe scale. Cut pipe ends square and debur.

Cap assembled pipe ends. Remove caps only to continue assembly.

Curve trenches to change direction or avoid obstructions within limits of pipe curvature. No deflection allowed at pipe joint. Minimum radius of curvatures as follows:

Mainline Pipe and Fittings:

Plastic Pipe:

Lay pipe "snake fashion" in trench 1 meter to 100 meters (1-foot per 100-feet) to allow for thermal construction and expansion and to reduce strain on connections.

Joints:

Solvent Welded Socket Type, ASTM D2855.

Threaded Type: Apply liquid Teflon, thread lubricant. Tighten joint with strap wrench up to two additional full turns after joint is hand tight (hard).

HDPE:

Join pipe using butt-fusion techniques as recommended by manufacturer.

Join pipe to dissimilar pipe materials using HDPE x transition adapter.

Lateral Pipe and Fittings:

PVC Solvent Weld Pipe:

Use primer and solvent cement. Join pipe according to manufacturer's instructions and accepted industry practices.

Cure 30 minutes before handling and 24 hours before pressurizing or installing vibratory plow.

Snake pipe from side to side within trench or install with expansion joints.

In irrigation isles, coordinate location of monuments to avoid conflicts.

Fittings: Cross type fittings are not acceptable.

Specialized Pipe and Fittings:

PVC Threaded Connections:

Factoryformed threads. Fieldcut threads are not acceptable.

Apply thread sealant according to manufacturer's instructions and accepted industry practices.

Use plastic components male threads and metal components female threads for plastictometal connection.

Hydrostatic Pressure Test - Mainline:

Notify the COR three days in advance of testing.

Newly installed irrigation pipelines jointed with rubber gaskets or threaded connections shall be subject to pressure and leakage testing after partial completion of backfill.

Subsections of mainline pipe may be tested independently, subject to the review of the COR.

Provide clean, clear water, pumps, labor, fittings, power, and equipment necessary to conduct tests or retests.

Volumetric Leakage Test - Gasketed Mainline Pipe:

Backfill to prevent pipe from moving under pressure. Expose couplings and fittings.

Purge all air from the pipeline before test.

Provide all necessary pumps, bypass piping, storage tanks, meters, 76.2 mm (3-inch) test gauge, supply piping, and fittings to properly perform testing. Testing pump must provide a continuous 700 kPa (100 psi) pressure to the mainline pipe. Where main lines are installed with significant elevation change, perform the test at the mid elevation of the segment being tested. Main lines may be tested in segments where the terrain makes it difficult to maintain the test pressure throughout. The test pressure is the minimum pressure on the line at the highest point of the line segment being tested.

Allowable deviation in test pressure, 35 kPa (5 psi) during test period; average pressure during test, 700 kPa (100 psi) therefore the pressure shall start at 5 psi above and be repressurized when the pressure is 5 psi below the test pressure. Restore test pressure to 700 kPa (100 psi) at end of test. Measure water added to mainline pipe volumetrically to nearest 10 ml (0.025 gallons).

Subject mainline pipe to the anticipated operating pressure of 700 kPa (100 psi) for two hours. Amount of additional water pumped in during test not exceeding the value in table, or the calculated value using the formula below, based on differing number of joints, duration, or pressure of the test:

Leakage Allowable (Gallons per (100 Joints)/Hour).

Note: Allowable Leakage calculated using L = (ND√P)/7400.

Where: L = Allowable Leakage (gph).

N = Number of Joints.

D = Nominal Diameter of Pipe (inches).

P = Average Test Pressure (psi).

The following are the values for a 2-hour duration test at 100 psi for pipe length containing 100 joints.

3.10 L (0.82 gallons) per 100 joints of 76.2 mm (3-inch) diameter pipe.

4.09 L (1.08 gallons) per 100 joints of 100 mm (4-inch) diameter pipe.

6.13 L (1.62 gallons) per 100 joints of 150 mm (6-inch) diameter pipe.

8.18 L (2.16 gallons) per 100 joints of 200 mm (8-inch) diameter pipe.

10.22 L (2.70 gallons) per 100 joints of 250 mm (10-inch) diameter pipe.

12.26 L (3.24 gallons) per 100 joints of 300 mm (12-inch) diameter pipe.

Volumetric leakage exceeding the amounts indicated above, adjusted for system test pressure, number of joints and shall be a failure of the test. Replace defective pipe, fitting, joint, valve, or appurtenance. Repeat the test until the pipe passes test.

Cement or caulking to seal leaks is prohibited.

Contractor may subcontract testing to pipeline testing company approved by RE/COR.

After mainline passes test, flush mainline.

Mainline Flushing:

Notify the COR three days in advance of flushing mainline.

Flush mainline before installation of Valve Assemblies.

Identify valve service tees for mainline flushing and plug or cap.

Remove plug or cap from closest service tee to point of connection (POC) and attach pipe with elbow to direct water away from trench.

Flush until water is clear of debris.

Replace plug or cap and move to next service tee and repeat flush. Continue process until all service tees are flushed ending with farthest service tee(s) from POC.

Flush one service tee at a time. Do not flush multiple points simultaneously.

COR will review flushing operation and water clarity before stopping flushing operation.

INSTALLATION OF MAINLINE COMPONENTS

General: Install as indicated on Drawings.

INSTALLATION OF SPRINKLER IRRIGATION COMPONENTS

Remote Control Valve Assembly:

Install as indicated on Drawings and according to manufacturer's instructions.

Adjust valve to regulate downstream operating pressure measured at the last sprinkler on the zone as follows:

Small Rotor: 379 kPa (55 psi) Connect valve decoder to solenoid wires and connect decoder to two-wire with wire connectors and waterproof sealant. Insert the connector all the way into the tube until the connector rests on the bottom.

Install only one remote control valve to valve box. Align valve box square from adjacent edges of paved areas.

Install valve in the specified valve box.

Install top of valve box flush with finish grade and level with slope.

Install valve box ID tag “XXX” and include controller letter and valve number.

Install schedule 80 threaded unions on both sides of valve.

Do not use schedule 80 close nipples.

Lateral Flushing:

Notify the COR three days in advance of flushing.

After pressure test, flush laterals before installation of Sprinklers.

Cap all risers.

Remove cap from closest sprinkler to valve and flush until water is clear of debris. Replace cap and move to next sprinkler and repeat flush. Continue process until all sprinklers are flushed ending with farthest sprinkler(s) from valve.

Flush one sprinkler at a time. Do not flush multiple points simultaneously.

COR will review flushing operation and water clarity before stopping flushing operation.

After flushing is complete install sprinklers and backfill and compact all pipe, fittings, joints, or appurtenances.

CONTROL SYSTEM COMPONENTS

Two-Wire Decoder Cable:

Provide 600 mm (24-inch) excess wire length in 200mm (8-inch) diameter loop at each 90 degree change in direction, at both ends of sleeves, and at 30 m (100foot) intervals along continuous wire runs. Do not tie wiring loop. Coil 600mm (24-inch) wire length within each remote control valve box.

Use wire connectors and waterproof sealant to splice wire according to manufacturer's instructions and these specifications.

Locate splices in valve box containing irrigation valve assembly. Use same procedure for valve connection and inline splices. When separate valve box is used for wire splices, provide pull box.

Install wire parallel with and below mainline, unless indicated on Drawings.

Cap exposed wire ends with waterproof wire splices.

Electrical Conduit:

Install two-wire cable in electrical conduit.

Two-Wire Decoders:

Connect decoders to two-wire cable and solenoid wires using specified wire connectors.

Connect flow sensor decoder to flow meter and weather station.

Existing Controller:

Program controller with new zones.

FIELD QUALITY CONTROL

Special Inspections and Tests:

Operational Test - Remote Control Valves, Lateral Piping and Sprinklers:

Activate each remote control valve in sequence automatically from the Central Computer, and via any handheld units. Manual operation on the valves from the bleed valve on the remote control valve is not an acceptable method of activation. COR will visually observe operation, water application patterns, and leakage.

Replace defective remote control valve, solenoid, wiring, or appurtenance to correct operational deficiencies.

Replace defective pipe, fitting, joint, valve, sprinkler, or appurtenance to correct leakage problems. Cement or caulking to seal leaks is prohibited.

Repeat tests until each lateral passes all tests. Repeat tests, replace components, and correct deficiencies at no additional cost to the Owner.

Operation Test: Operate entire installation to demonstrate the complete and successful operation of all equipment.

CLEANING

Upon completion of work, remove from site all machinery, tools, excess materials, and rubbish. Restore site to normal or original condition.

Clean exposed surfaces. Remove contaminants and stains.

REPAIR

Restore turf over trenches and turf damaged by Contractor activities to original condition by sodding as described in Section 32 92 24 – Turf Renovation.

Replace/repair turf damaged as a result of construction or negligence of the Contractor through “Turf Renovation” by sod when directed by the COR.

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PLANTING IRRIGATION

32 84 00 - 12