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HomeMy WebLinkAbout32-8400-Irrigation_Rev_1Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 1 of 17 SECTION 32 8400 IRRIGATION PART 1 - GENERAL 1.1 WORK SUMMARY A. Provide all materials, labor, installation equipment, and technical service to complete construction of: 1. Automatic athletic field irrigation system 2. Connection to new well pump system and controls 3. Coordination of installation by licensed electricians. B. Provide testing and guarantee of irrigation and well water pump systems as defined in this Specification and Construction Drawings. C. Items of work specifically included are: 1. Procurement of all applicable licenses, permits, and fees. 2. Coordination of all utilities and licensed tradespersons to install work. 3. Acquisition of all materials. 4. Verification of site conditions. 5. Maintenance during guarantee period. 6. Connection of electrical power supply to the irrigation control system. 7. Demonstrating full system operation as specified through Commissioning procedure outlined in Section 32 8440 D. Forms and Conditions of the Contract as provided by the Construction Manager, and applicable parts of Division 1 - GENERAL REQUIREMENTS, shall be included in and made a part of this Section. 1.2 QUALIFICATIONS A. Qualified irrigation system installers must have a minimum experience of five (5) years with work and products specified herein, including: 1. Two-Wire Controller and Valve Installation 2. Weather-Based and Smart Controllers 3. Solvent Weld and/or Gasket Joint PVC Pipe 2-inches and Greater 4. Fused HDPE Pipe Installation 5. Commercial/Municipal Irrigation Systems 6. Athletic Field and Golf Course Irrigation Systems 7. Well Water Systems (Pressure Start) B. Qualifications: Submit qualification package as requested by Owner’s Representative. Qualifications package must include: 1. Three (3) references for similar work described under Section 1.02 Qualifications per- formed in last five (5) calendar years. a. Contact name b. Company Name c. Contact Phone Number d. Project Name and Location e. Brief Project Description Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 2 of 17 1.3 UTILITIES AND CONDITIONS A. Water Service Point of Connection 1. New overburn (sand and gravel) well water service shall be drilled and developed in proximity to proposed athletic fields (final location to be determined after test well drilling program, see 32 8410 Irrigation Well Construction). 2. Irrigation system flow and control valve equipment shall be installed in outdoor Pump Station Enclosure by Pump Station Manufacturer (see 328420 Irrigation Pump System). Provide two-wire path into Pump Station through provided conduits. 3. Irrigation Equipment within Pump Station Enclosure includes: a. 2-Inch Normally Open (NO) Hydrometer with Decoder b. Pressure Sensor with Decoder 4. Flow and Pressure Requirements to be developed by new overburden well and controlled through Pump Station: a. Flow: Targeted 65 gallons per minute (gpm) b. Pressure: Maintained 80 pounds per square inch (psi) downstream of pressure transducer. c. Pressure Relief: Discharging at 100 psi to dry well. B. Electrical Power Source to Outdoor Equipment 1. New electrical circuits to be provided by Electrical Contractor (Refer to Division 26 Electrical). a. Power Requirements for Irrigation Controller in Outdoor Pedestal Enclosure 1.) 120-Volt, 1-Phase, 60-Hz, 20-Amp (GFCI) b. Conduits shall be provided for power and valve wire through concrete pad into Outdoor Pedestal Enclosure C. Communications to Outdoor Irrigation Controller 1. Communications to be provided by Communications Contractor (Refer to Division 27 Communications). a. Communication Requirements for Irrigation Controller 1.) Ethernet CAT/5 Cable to Local Area Network a.) 1-Inch Conduit Provided with Cable by Electrical Contractor at Irrigation Controller 2.) BACNet Communication with Building Management System (BMS) a.) 1-Inch Conduit Provided to BMS by Electrical Contractor at Irrigation Controller D. Pipe Sleeves 1. Coordinate pipe sleeves to be provided by Earthwork Contractor beneath all hardscape, as indicated on Construction Drawings. a. Pipe sleeve requirements 1.) Two (2) parallel 6-inch Schedule 40 PVC 2.) Extend 18 inches beyond edge of hardscape 3.) Minimum cover: 12 inches 1.4 RELATED REQUIREMENTS A. Coordinate with other project trades and refer to overall project Construction Document Specifications and Drawings, including, but not limited to: 1. Division 01 – General Requirements a. Section 01 6000 – Product Requirements: Listing of Emissions and VOC Requirements Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 3 of 17 b. Section 01 7419 – Construction Waste Management and Disposal: Procedural and Administrative Requirements for Construction and Demolition Recycling c. Section 01 8113 – Sustainable Design Requirements: Special Administrative and Procedure Requirements Related to Owner’s LEED v4 for Schools Building Design + Construction (BD+C) goals of Certification d. Section 01 8113A – LEED v4 Materials Reporting Form: Materials Tracking for Building Product Disclosure and Optimization Credits 2. Division 02 – Existing Conditions 3. Division 03 – Concrete 4. Division 26 – Electrical 5. Division 27 – Communications 6. Division 31 – Earthwork 7. Division 32 – Exterior Improvements 8. Division 33 – Utilities 9. Construction Drawings: a. IR100 – Irrigation b. IR200 – Irrigation Well Construction c. IR300 – Irrigation Pump System d. IR400 – Irrigation System Commissioning e. Review all other Project Construction Drawings for coordination. 10. Specifications: a. 328400 – Irrigation (This Document) b. 328410 – Irrigation Well Construction c. 328420 – Irrigation Pump System d. 328430 – Irrigation System Commissioning 1.5 APPLICABLE STANDARDS AND CODES A. At a minimum, comply with the following standards and codes: 1. American Society for Testing and Materials (ASTM) 2. National Standard Plumbing Code (NSPC) 3. National Electric Code (NEC) 4. National Sanitary Foundation (NSF) 5. Underwriters Laboratories, Inc. (UL) 6. Occupational Safety and Health Administration (OSHA) B. Comply with applicable laws, standards, and regulations of the local governing authority. All local laws more stringent than those referenced above shall take precedent. 1.6 SUBMITTALS A. Submit the following under provisions of General Conditions: 1. Literature: Manufacturer's product data sheets, specifications and installation instructions for materials listed in this Specification (Part 2 – Products). a. Product submittals shall be concise (no extraneous pages or sections) and clearly marked to show submitted product model, type, size, etc. b. Substitute Product Submittal: 1.) Provide specified product submittals for “an approved equal” to Owner’s Representative for approval. 2.) Alternate products are acceptable when products of equal or better quality and performance are submitted and approved by the Owner’s Representative. 3.) Substitute Product Submittals constitute representation that: Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 4 of 17 a) Substitute products have been thoroughly investigated and have been determined to be equal or superior in all respects to that specified. b) Substitute products shall provide the same warranties as specified products. c) Substitute products are compatible with interfacing items. d) Assume responsibility of and guarantee system performance due to product substitution, including making all subsequent changes to meet design specifications. c. Work shall not commence until all products specified are submitted and approved in a written notification by Owner’s Representative. d. All product installed shall be new, without defects, and of quality and performance as specified. 2. Schedule: Submit Schedule of all products to be furnished hereunder, indicating manufacturer, size, and model. a. Ensure that all types/styles of products and installation equipment specified herein can be furnished by the manufacturer submitted. b. Provide all spare irrigation parts as noted (see Spare Irrigation Parts) c. Prior to submitting schedule, confirm current site conditions are as provided in the Construction Drawings. 1.7 DELIVERY, STORAGE AND HANDLING A. Do not deliver materials to the site, until all specified submittals have been submitted to, and approved by, the Owner’s Representative. B. Coordinate with Owner’s Representative for temporary storage and staging areas. C. Protect materials from damage from construction traffic, weather, corrosion, and other causes while stored on-site. Minimize on-site storage as possible. D. Store and handle all products and materials in compliance with manufacturer instructions and recommendations. 1.8 GUARANTEE AND REPLACEMENT A. Guarantee entire irrigation and well water systems, parts, and labor, for one (1) year from official written date of acceptance by Owner’s Representative. Provide written warranty showing date of completion and period of warranty prior to request for final payment. B. System malfunctions occurring during the guarantee period due to defective materials, poor workmanship, or improper adjustment shall be corrected to satisfaction of Owner’s Representative at no additional cost to the Owner. 1. Repair all defects within 10 days of notification from Owner or Owner’s Representative. 2. Repair defects with approved products. C. First-year spring system start-up and winterization shall be included in system guarantee. D. Manufacturer warranties shall be provided for all products and materials where such warranties are offered in published product data. Copies of manufacturer warranties are to be included in the Operations & Maintenance Manual (See Operation and Maintenance). Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 5 of 17 PART 2 - PRODUCTS 2.1 AUTOMATIC IRRIGATION CONTROLLER A. Controller 1. Size: Approximately 16 inches (tall) x 12 inches (wide) x 6 inches (deep) 2. Construction: Electronic with 120-Volt Input and 24-28 Volt Output, Stainless Steel Wall- Mounted Enclosure 3. Standards: UL-Listed 4. Features: Manual and Automatic Control, Water Budgeting, Cycle-Soak, Sensor Input Terminals, Internal Transformer, Flow Monitoring Capability, Lightning Protection, Remote Control, Two-Wire System with Conventional Wire Retrofit Capability. 5. Manufacturer/Model: Baseline BL-3200; or Approved Equal with: a. BACNet Manager (Required for School Commissioning) b. Soil Moisture Sensing c. BaseManager Subscription d. 10-Year BaseLine Extended Warranty (Include with Price) B. External Devices 1. Hydrometer (Installed Inside Pump Station) a. Manufacturer/Model: Netafim Hydrometer, Normally Open, 2-Inch (FPT) b. Flow Range: 5.3 – 95 gpm (nominal flow = 66 gpm) 2. 4-20 mA Pressure Sensor (Installed inside Pump Station) a. Manufacturer/Model: Baseline Pressure BiCoder BL-5406 3. Remote Control and Access a. Manufacturer/Model: Baseline BaseManager 2.0 Web Application (for use with Computer, tablet, or smartphone); or Approved Equal b. BACNet Communication with Building 4. Field Decoders a. Manufacturer/Model: BL-5201, BL-5202, and BL-5204; or Approved Equal 5. Lightning Arrestor a. Manufacturer/Model: Baseline BL-LA01 6. Soil Moisture Sensor a. Manufacturer/Model: Baseline BL-5315 7. Rain Sensor a. Manufacturer/Model: Hunter Mini-Click (Wired, through Rain Switch Enclosure into Irrigation Controller Enclosure C. Grounding 1. Ground Irrigation Controller to Earth with 6AWG bare copper wire to grounding rod and plate. D. Outdoor Enclosure 1. Exterior Controller Enclosure: Manufacturer/Model: VIT Strongbox SB-16SS; or Approved Equal. 2. Rain Switch Enclosure: Manufacturer/Model: VIT Strongbox RGVRSS; or Approved Equal. 2.2 WIRE A. Two-Wire (From Controller to Decoders) 1. Size: 14/2 AWG Minimum 2. Construction: Dual Strand Solid Copper Conductors with PVC Insulation and Poly Jacket. 3. Ratings: UL-Listed, NEC (Class II Circuit), Direct Burial UF/TWU, up to 600-Volt Potential Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 6 of 17 4. Standards: ASTM B-3, ASTM B-8 5. Markings: Manufacturer, Rating, Size, and Type 6. Manufacturer/Model: Coleman Cable #51452; Paige P7072D, P7296D, P7350D, and P7354D; Regency 14/2 and 12/2 Maxi Cable; Hunter Decoder Jacketed; Service Wire Company DEC12/2BE and DEC 14/2BE; or Approved Equal. B. Conventional Wire (From Decoders to Electric Zone Valves) 1. Size: 14AWG Minimum 2. Construction: Single Strand Solid Copper Conductor with PVC Insulation 3. Ratings: UL-Listed, NEC (Class II Circuit), Direct Burial UF/TWU, up to 600-Volt Potential 4. Standards: ASTM B-3, ASTM B-8 5. Markings: Manufacturer, Rating, Size, and Type 6. Manufacturer/Model: Paige Electric Model P7001D; Service Wire Company UF14, UF12; Regency Wire & Cable 14AWG, 12AWG; or Approved Equal. C. Wire Splices 1. Type: Direct Burial Wire Splice Kit (All Components Intact) 2. Construction: Lockable Plastic Tube, Pre-Filled with Insulation Gel 3. Ratings: UL-Listed, NEC, Direct Burial and Submersion, up to 600-Volt Potential 4. Manufacturer/Model: 3M DBY-6; Rain Bird DB Series; or Approved Equal. D. Decoder Cable Fuse Device with Lightning Arrestors 1. Type: Direct Burial Quick Disconnect Signal Splitter with 5-Amp Fuses 2. Construction: Waterproof PVC with O-Ring Seal and ACME Threads 3. Manufacturers: Paige Wire DCFD; or Approved Equal E. Wire Conduit 1. Size: 1-Inch Minimum 2. Construction: PVC, Solvent Weld 3. Ratings: Schedule 40 4. Fittings: Long Sweep Elbows 5. Manufacturer: Cresline; Certainteed, JM Eagle; or Approved Equal. 2.3 PIPE AND FITTINGS A. Irrigation Mainline and Laterals 1. Size: 2.5-Inch Mainline Maximum, Laterals with Size as Noted on Drawings 2. Construction: Polyvinyl Chloride (PVC), Solvent Weld 3. Ratings: Class 200 PVC SDR21 4. Markings: Manufacturer, Nominal Size, Class or Schedule, Pressure, Extrusion Date, Pipe Insertion Mark. 5. Manufacturer: Cresline; Certainteed; JM Eagle; or Approved Equal. B. Fittings 1. Ratings: a. For Valves Toe Nipples: Schedule 80 PVC b. Other Fittings: Schedule 40 PVC 2. Markings: NSF Designation, Size, Class or Schedule 3. Manufacturer: Lasco; Spears; Dura; or Approved Equal C. Solvent 1. Type: NSF Type I or Type II PVC 2. Standards: ASTM D-2564 3. Manufacturer: IPS Weld-On 711; Oatey HD Cement; Rectorseal Gold; or Approved Equal Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 7 of 17 D. Primer 1. Type: NSF for PVC 2. Standards: ASTM F-656 3. Manufacturer: IPS Weld-On P-68; Oatey Clear Primer; Rectorseal Jim PR-2; or Approved Equal 2.4 ELECTRIC ZONE VALVES A. Sprinkler Zone Valve 1. Size: 1½-Inch (up to 30 gpm), 2-Inch (up to 65 gpm) 2. Construction: Plastic Globe Valve with Reinforced Nylon or Fiberglass Body 3. Ratings: 200 psi 4. Features: Manual Bleed Screw, Flow Control, Pressure Regulation, and Filter/Scrubber 5. Manufacturer/Model: Hunter ICV-FS with Accu-Sync; Rain Bird PESB with PRS-Dial; or Approved Equal 2.5 ISOLATION VALVES A. Small PVC Mainline Isolation Valve 1. Size: 2.5-Inch and Smaller 2. Construction: Bronze, Gate Valve 3. Ratings: 200 psi 4. Features: Steel Cross Handle, Non-Rising Stem 5. Manufacturer/Model: Nibco T-113K; Apollo 102T-K; or Approved Equal 2.6 QUICK COUPLING VALVES A. Small Mainline Quick Coupling 1. Size: 1-Inch, Normally Closed 2. Construction: Brass, Spring-Loaded Valve Seat, Key Engaged 3. Ratings: 125 psi 4. Features: 1-Inch NPT Inlet, ACME Key, Locking Vinyl Cover, Anti-Rotation Stabilization Wings 5. Swing Joint Assembly a. Size: 1-Inch b. Construction: PVC, with O-Ring Seals and Brass Threaded Outlet c. Manufacturer: Hunter HSJ-1 with SnapLok; or Approved Equal 6. Manufacturer/Model: Hunter HQ-44RC-AW; or Approved Equal. 2.7 VALVE BOXES A. General 1. Size: a. 12-Inch Standard Valve Box 1.) Single 2-Inch Electric Zone Valve 2.) Double 1½-Inch Electric Zone Valves b. 6-Inch Round 1.) Wire Splice 2.) Decoder Cable Fuse Device 3.) Decoder Grounding Rod c. 10-Inch Round 1.) Single 1½-Inch Electric Zone Valve 2.) Isolation Valve 3.) Quick Coupling Valve Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 8 of 17 2. Construction: Resin 3. Ratings: Tensile Strength 3,000-5,000 psi 4. Color: Green or Black (per Owner’s Representative) 5. Features: Lockable, Bolt-Down Covers, Brick Supported 6. Manufacturer/Model: Carson, Model Specification Grade NDS Pro; Rain Bird VB; or Equal 2.8 PRESSURE GAUGES IN VALVE BOXES A. Construction: Steel, filled with Glycerin B. Configuration: Back Mount, 0 – 200 psi C. Manufacturer/Model: Watts, Winters Instruments, or Approved Equal 2.9 GEAR-DRIVEN ROTOR SPRINKLERS A. General 1. Size: 6-Inch Pop-Up Height with 1-inch FPT bottom inlet 2. Ratings: Approved Effective Radius shall be 80% of Manufacturer Radius by Nozzle, 60 psi minimum. 3. Construction: Gear-Driven, Removable Nozzle, Internal Check Valve, Stainless Steel Re- traction Spring, Rubber Cover, Stainless Steel Riser 4. Feature: Adjustable Part and Full Circle, High Speed Nozzles for Infield Watering 5. Manufacturers: Hunter, I-25-06-SS with Design Nozzles Shown on Drawings, Rain Bird Falcon 6504-SS, or Approved Equal. B. Swing Joint Assembly 1. Size: 1-Inch with 12-Inch Lay Arm 2. Construction: PVC, with O-Ring Seals and Threaded Outlet 3. Manufacturer: Hunter HSJ-1-12; Rain Bird TSJ-12; Lasco G132-100 or Approved Equal. 4. Provide Combination PVC Insert Tee Fitting with FPT Outlet at Lateral for Swing Joint 2.10 ROTARY NOZZLE SPRINKLERS A. Body 1. Size: 6-Inch Pop-Up 2. Construction: Plastic, Ratcheting Riser, Removable Nozlle, Internal Check Valve 3. Ratings: Pressure Regulated to 40 psi (Minimum 50 psi at Regulator) 4. Manufacturer/Model: Hunter PROS-XX-PRS40-CV; Rain Bird 18XX-SAM-PRS-P45, or Approved Equal. B. Nozzles 1. Distance: 12 – 30 feet radius (see drawings) 2. Features: Full and Part-Circle Fixed-Arc and Strip Patterns 3. Manufacturer/Model: Hunter MP Rotator, Toro Precision Rotating, or Approved Equal 2.11 IRRIGATION EARTH MATERIALS A. Stone (in Valve Boxes) 1. Type: ¾-Inch (minimum) Crushed Stone B. Clean Sand 1. Gradation: (passing by weight) a. No. 4 Sieve= 80% Minimum Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 9 of 17 b. No. 200 Sieve = 5% Maximum C. Concrete 1. Ratings: 3,000 psi 28-day Compressive Strength 2. Standards: ASTM C-33, ASTM C-94, ASTM-C150 2.12 SPARE PARTS A. Quick Coupler Valve Keys (2) B. Gate Valve (1) C. Five (5) Sets of Sprinkler Nozzles D. Pressure Gauge PART 3 - EXECUTION 3.1 GENERAL A. Competent superintendents and assistants shall always be on-site during product delivery, installation, testing, and system adjustments. 1. Field communication by Owner or Owner’s Representative to superintendent shall be binding. B. System features shall be laid out as indicated on Drawings, making minor adjustments for variations in planting arrangements or field conditions. Major changes shall be reviewed with Owner’s Representative before acceptance. 1. Irrigation lines shown on Construction Drawings are diagrammatic only. Location of irrigation equipment is contingent upon and subject to integration with all other underground utilities, tree roots, and hardscape design elements. 3.2 EXAMINATION A. Review and verify project conditions are as indicated on Construction Drawings prior to starting work, including but not limited to: 1. Utilities 2. Site grades and dimensions 3. Landscaping and features 4. Structures 5. Pipe sleeves B. Report any irregularities of site conditions to the Owner’s Representative prior to beginning work. C. Beginning of installation connotes acceptance of existing project conditions. 3.3 PROJECT COORDINATION A. Coordinate with Owner’s Representative to expeditiously install system. B. Provide written notifications (electronic is acceptable) to Owner’s Representative prior to work commencement, weekly for progress report, for any proposed changes to system design, and upon installation completion. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 10 of 17 C. All questions of design intent, proposed design changes, field notifications, and product substitution after installation commences shall be in writing to Owner’s Representative as a Request for Information (RFI). D. Utility Coordination: 1. Maintain 6-inch minimum clearance between irrigation lines and any utility line. Do not install sprinkler lines directly above another utility of any kind. 2. Exercise care when excavating, trenching, and working near existing utilities. 3.4 SITE PROTECTION A. Protect landscaping, paving, structures, walls, footings, etc. from damage caused during work. Damage to work of another trade shall be reported at once. B. Replace or repair any damage with same product or material, to the satisfaction of Owner’s Representative at no additional cost to the Owner per Guarantee. C. Route pipe as necessary to prevent damage to tree roots. Where trenching must occur near trees, provide proper root pruning and sealing methods to all roots 1-inch and larger. 3.5 EXCAVATION, TRENCHING, AND BACKFILLING A. Pipe Trench: 1. Trench all pipe (no pipe pulling). 2. Coordinate with athletic field underdrainage installation. 3. Excavate trenches straight and true, minimizing site disturbance as possible. 4. Final trench bottom shall be undisturbed soil and shall be free of rocks and debris larger than 1 inch or with sharp edges. If trench base is unsuitable for laying pipe, over excavate 2 inches below pipe invert, and place Clean Sand or Stone. B. Clean Backfill: 1. Material: Clean Sand (See Earth Materials) a. Clean backfill must be free of foreign material, debris, frozen material and rocks larger than 1-inch. 2. Carefully place clean backfill a minimum depth of 10-inches over pipe and wire, tamp in place. 3. Carefully place material around pipe and wire, tamp in place. C. Trench Backfill: 1. Material: Re-use excavated material a. Clean backfill must be free of foreign material, debris, frozen material, and rocks larger than 1-inch. 2. Place and compact in maximum 6-inch lifts to dry density equal to undisturbed soil. Compaction by truck or equipment tires is prohibited. 3. Avoid backfilling in hot weather. 4. Match adjacent subsurface grades without hills or depressions. Repair settling (as required by Guarantee). 5. If final soils were removed or disturbed during trenching, replace to match Project Specifications and regrade as necessary. 3.6 PIPE INSTALLATION A. PVC Pipe Installation Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 11 of 17 1. Cut plastic pipe with handsaw or pipe cutter, removing all burrs at cut ends. All pipe cuts shall be square and true. Bevel cut end as required to conform to manufacturer instructions. 2. Make all solvent-weld joints as per manufacturer’s instructions and avoid applying excess primer or solvent. Do not wipe off excess solvent from each connection. a. Allow welded joints minimum 5 minutes set-up/curing time before moving or handling. 1.) Above 80oF: Allow connections to set 24 hours. 2.) Below 80oF: Follow manufacturer instructions. 3.) Below 40oF: Prohibited. 3. Maximum deflection per joint shall not exceed manufacturer limits. 4. Maintain 1-inch minimum between lines which cross at angels of 45 to 90 degrees C. PVC Pipe and wire shall run in same trench as mainline, at the elevation of the pipe invert (See Wire Installation). D. PVC Pipe Cover (unpaved surfaces): 1. PVC Mainline = 22 inches 2. PVC Lateral = 16 inches E. Pipe Protection: 1. Prevent foreign material from entering pipe during installation. 2. Open ends of pipe shall be closed by watertight plug or seal when not in use. 3. Securely store pipe when not scheduled for installation. 4. Pipe shall not be installed when water is in trench, during rainstorms, or when temperature is below 400F. a. No additional pipe may be installed or backfilled if water enters trench during pipe installation. Remove all water from trench before resuming installation. b. Pipe installed at temperatures below 40 ºF shall be removed and replaced at no cost to owner. 5. Trenched PVC pipe shall be snaked to accommodate for expansion and contraction due to changes in temperature. 3.7 PIPE SLEEVE INSTALLATION A. Coordinate with Owner’s Representative for provided pipe sleeves and locations installed by Earthwork Contractor. B. New Pipe Sleeves: 1. Pipe Sleeve Cover: Minimum = 12 inches 2. Install pipe sleeves where irrigation pipe runs under hardscape (see Construction Drawings). 3. Extend pipe sleeves minimum 18 inches beyond edges of hardscapes. 4. Prior to installation of pipe, pipe sleeve ends shall be field marked with vertical wood stakes extending above grade to allow field location during irrigation system installation. C. Cutting through or jacking under new pavement shall be strictly prohibited. Failure to provide sleeves shall require notification to Owner’s Representative for resolution. 3.8 ELECTRICAL CONDUIT INSTALLATION A. Electrical conduit shall be installed: 1. Under and through all hardscape areas 2. Through all enclosure concrete pads Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 12 of 17 3. For above ground wiring B. Electrical conduit shall extend 18-inches beyond edges of hardscape. 3.9 ELECTRIC ZONE VALVE INSTALLATION A. Install electric zone valves on level crushed stone base generally where shown on Construction Drawings. Do not pour stone around valves that are already installed. B. Install all Schedule 80 PVC threaded nipples with Teflon tape, isolation valves, and/or union couplings in and out of electric zone valves as shown on details on Construction Drawings. C. Set valves plumb with adjusting handle and all bolts, screws, and wiring accessible through valve box opening. D. Install at sufficient depth to provide between 4-6 inches of cover from top of valve to finish grade. E. Install specified valve box over all electric zone valves. Ensure lid is flush with final proposed grade (coordinate with Site Contractor). F. Adjust zone valve operation after installation using flow control device on valve. 3.10 ISOLATION VALVE INSTALLATION A. Install isolation valves per detail where indicated on Construction Drawings. B. Install all isolation valves on level crushed stone base for operation ease with appropriate valve wrench. Do not pour stone around valves that are already installed. C. Install specified valve box over all isolation valves. Ensure lid is flush with final proposed grade (coordinate with Site Contractor). D. Check and tighten valve bonnet packing before valve box and backfill installation. 3.11 QUICK COUPLING VALVE INSTALLATION A. Install quick coupling valves where indicated on Construction Drawings; generally, at ends of mainline branches and immediately downstream of well. B. Mount mainline quick coupling valves on 1-inch diameter, 12-inch long brass swing joint assemblies and stabilizers. C. Where mainline pressure exceeds 60 psi, install pressure regulating valves to 40 psi off quick coupling valve service tee. 3.12 WIRE INSTALLATION A. Install wiring per local codes for less than 30-Volt service. B. Install valve two-wire in trench alongside mainline at invert elevation. Backfill carefully to avoid any damage to wire insulation on conductors. 1. In areas of unsuitable material, use clean sand in bottom of trench before placing wire (see Excavation, Trenching, and Backfilling) 2. Minimum cover: 12-inches Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 13 of 17 C. Maintain sufficient slack for expansion, contraction and servicing. Do not install wiring tightly. 1. Provide and install additional 8 to 12 inches slack for conventional wire from decoder to valve. 2. Provide 30 inches slack between decoders for two-wire. 3. Provide sufficient length of wire in valve boxes to allow valve solenoid, splice, decoder wire, and all connections to be brought above grade for servicing. 4. Coil slack for neatness in valve box. D. Install Decoder Cable Fuse Device as shown on Contract Drawings. E. Provide waterproof splices at all in-ground wire connections using approved splice kits. All splices shall be made in valve boxes and recorded on Record Drawings. F. Provide complete wiring diagram showing wire routing for connections between controller and valves as specified in Record Documents. G. Securely store wire when not scheduled for installation. 3.13 GROUND INSTALLATION A. Decoder Grounding (Over Earth, Not Over Structures) 1. Coordinate with on-site utility contractors and/or call 811 (Dig Safe) 2. Provide grounding for decoders – with lightning surge arrestor (as required by Manufacturer) – as shown on Drawings. 3. Grounding shall be provided for per manufacturer’s instructions. Where no minimum grounding requirements are specified, provide grounding every 8 decoders or 500 feet maximum. 4. Lightning/Surge Arrestor (if not included with Decoder) a. With waterproof splices, connect lightning arrestor red wire to site red wire and lightning arrestor black wire to site black wire. Decoder, lightning arrestor, and site two-wire may be connected in the same waterproof splice as per manufacturer. b. With waterproof splice, connect lightning arrestor ground green wire to 8AWG solid bare copper wire. Bury bare copper wire grounding wire 12 inches minimum (or per local code) and run to grounding rod valve box. c. Place wired lightning arrestor (if required) neatly inside valve box. 5. Grounding Rod a. Prepare valve box for grounding rod installation 8 feet from all valve boxes and electrical equipment. Drive 8-foot grounding rod into earth with 6 inches minimum below valve box lid. b. Make Cadweld connection between bare copper wire from lightning arrestor splice to grounding rod lug. c. Bolt down grounding rod valve box lid. 3.14 DECODER INSTALLATION A. Wiring 1. With waterproof splices, connect decoder red wire to site red wire and decoder black wire to site black wire. 2. With waterproof splices, connect decoder valve leads to electric zone valve solenoid leads. 3. Place wired decoder neatly inside valve box. 4. Connect with irrigation controller and run diagnostic decoder search to link. B. Provide grounding for decoders per manufacturer’s instructions. Refer to Ground Installation section. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 14 of 17 1. With waterproof splice, connect lightning arrestor ground green wire to 8AWG solid bare copper wire. Bury bare copper wire grounding wire 12 inches minimum (or per local code) and run to grounding rod valve box. 2. Place wired lightning arrestor (if required) neatly inside valve box. 3. Prepare 6-inch round valve box for grounding rod installation 8 feet from all valve boxes and electrical equipment. Drive 8-foot grounding rod into earth with 6 inches minimum below valve box lid. 4. Make Cadweld connection between bare copper wire from lightning arrestor splice to grounding rod lug. 5. Bolt down grounding rod valve box lid. 6. Where grounding rods cannot be driven into the earth, splice all lightning arrestor green wires in series (with 6AWG bare copper wire) and coordinate acceptable earth grounding with site Electrical Contractor. 3.15 SPRINKLER INSTALLATION A. Sprinklers shall not exceed maximum spacing as indicated on Construction Drawings. B. Install sprinklers flush with grade on PVC swing joints as specified. C. Flush system before installing internals, flush caps, and nozzles (see Testing and Adjustments) D. Adjust all sprinklers after installation using flow control device on valve. 3.16 AUTOMATIC IRRIGATION CONTROLLER INSTALLATION A. Controller 1. Install controller at location shown on Construction Drawings. a. Program “Cycle-Soak” feature for all zones with sloped or poorly draining soils. b. Install and calibrate all soil moisture sensors as per manufacturer instructions. c. Soil moisture sensors are not required for each irrigation zone. Assign representative soil moisture sensors for similar zones, such as: 1.) Sun vs. Shade 2.) Lawn vs. Plantings 3.) Heavy vs. Light Soils 4.) Use Irrigation Plans provided for Recommended Quantity and Assignment 2. Using licensed electrical, wire controller to 120-Volt, 20-Amp electrical supply provided by Electrical Contractor. 3. Provide keys to Owner after final walkthrough. B. Soil Moisture Sensors 1. Install rain sensors within Rain Switch Enclosure welded to irrigation controller enclosure. Wire sensor through Sensor Guard, through enclosure, and into Controller. 2. Exposed sensor wire shall be installed within ½-inch galvanized conduit, where applicable. 3. Rain Sensor shall have direct overhead exposure to atmospheric conditions and not in contact with overhead irrigation. C. Hydrometer 1. Hydrometer shall be installed within Pump Station by Pump Station manufacturer. 2. Wire Hydrometer through Pump Station Enclosure concrete pad to Decoder and Automatic Irrigation Controller as specified with waterproof connectors. 3. Do not make extra splices between Controller and Flow Sensor. Ground Sensor Decoder as required by manufacturer to earth where possible. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 15 of 17 D. Grounding 1. Coordinate with Electrical Contractor for acceptable grounding rod locations for controller and decoders). 3.17 VALVE BOX INSTALLATION A. Furnish and install valve boxes as per valve schedule above for each valve, splice, or sensor. B. Install valve boxes on minimum 4-inches crushed stone base. Pouring stone into valve box after installation is not acceptable. C. Finish elevation of all boxes shall be at grade, unless otherwise noted in Drawings. D. Provide level brick supports beneath valve boxes. 1. For square/rectangular boxes, provide four (4) supports - one at each corner. 2. For round boxes, provide three (3) supports equally spaced. E. Bolt down all valve boxes with manufacturer hardware. 3.18 TESTING AND ADJUSTMENTS A. Include all testing and adjustments in submitted bid price. B. System Flushing: 1. Open electric zone valves and flush out irrigation system under full head of water before installing sprinkler internals, flush caps, and nozzles. 2. Flush entire irrigation system after complete installation. 3. Clogged nozzles shall be remedied after completion of irrigation system. C. Testing: 1. Test all pipe and valves for leaks at operating pressure. Repair all leaks and retest until leaks are remedied. 2. Perform coverage test with Owner’s Representative present. Operate electric zone valves for five (5) minutes during coverage test. Readjust sprinkler nozzles and head locations (as necessary) to attain proper coverage. Replace any equipment that does not meet specified standards. 3. After testing, clean all equipment of debris during installation. D. Adjust sprinkler heads and valve boxes as necessary for mowing and landscaping. E. Throughout guarantee period, adjust sprinklers and ensure coverage due to settlement and landscaping operations. 3.19 RECORD DOCUMENTS A. Record (As-Built) Drawings 1. Maintain and update Record Drawings with red-line markings as project progresses, including locations of: a. Sprinklers and descriptions (nozzle, pop-up height, and type) b. Valve Boxes and descriptions (valve type, zone numbers, splice, etc.) c. All equipment installed with distinct symbols. d. Pipe routing and tees. e. Wire routing and splices. Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 16 of 17 2. Locations of installed equipment (valve, controller, sensors) shall be referenced by two permanent locations (swing ties) or GPS. 3. Make all notes legible as work progresses, any new equipment added shall use distinct symbols denoting location. 4. Document any changes from original Construction Drawings. 5. Prints of original Construction Drawings may be obtained from the Owner’s Representative at cost (0% markup). 6. Record Drawings shall be used as basis of payment for work completed. Provide copies of red-lined set to Owner’s Representative along with payment request. B. Record Documents 1. Record Documents shall always be on-site. Maintain record of the following as the project progresses: a. Plumbing and Electrical permits (state whether required or not) b. Materials Approved and approval date c. Pressure Test results, testing personnel and testing date. d. Materials delivered, Accepted, and Installed by whom and date. e. Field Communications and Requests for Information (RFI) C. Prior to final punchlist, provide complete electronic and hard copy files of Record Drawings and Documents to Owner’s Representative as part of project completion. All information must be complete and shall be added to submitted documents prior to acceptance. 3.20 OPERATION AND MAINTENANCE A. General 1. Bid price shall include up to four (4) hours of irrigation system overview and instruction with Owner and/or Owner’s Representative. B. Operation and Maintenance Manual 1. Provide three (3) hard cover binders titled “Dennis Yarmouth Intermediate Middle School System” prior to application for acceptance and final payment. 2. Operation and Maintenance Manual shall include, but not be limited to: a. Title Page and Table of Contents b. One-Paragraph Written Description of Irrigation System c. Manufacturers’ Data and Cut Sheets of Equipment, including: 1.) Copies of all approved submittals 2.) Wire resistance readings to each electric valve at completion (for future troubleshooting) 3.) Recommended operating settings (irrigation and booster pump system) 4.) Recommended maintenance schedule 5.) Name, address, and telephone number of installer (for repairs, spring startup, and winterization during 1-year guarantee period) 6.) Irrigation program for periods without rain and recommended settings including, zone run time, days per week, cycle-soak, and rain sensor suspension. 7.) Soil Moisture Sensor and Settings d. Winterization and Spring Startup Instructions (after 1-year guarantee period) e. Guarantee Data f. Pockets with Folded Plans of: 1.) Original Design Drawing 2.) Final Record Drawing 3.) Controller Valve and Wiring System Diagram Drawing 4.) Flow and Pressure Settings Dennis Yarmouth Intermediate Middle School January 19, 2021 Dennis Yarmouth Regional School District 100% Construction Documents Perkins Eastman DPC, Project #71011 32 8400 Irrigation 17 of 17 3.21 SYSTEM COMMISSIONING A. Once all punchlist items have been addressed and Operation and Maintenance Manuals have been provided, system shall be commissioned as specified in Section 328430 by Owner’s Representative. B. Demonstrate to Owner’s Representative satisfaction that all control points and operation of irrigation system 3.22 SITE CLEANUP A. Remove all unused materials and equipment from project site safely and efficiently. Dispose of all unused materials legally - including construction debris and trash. B. Adjust ground, compact, and re-plant around irrigation sprinkler heads and trenches as necessary for proper angle and elevation. C. Fill all depressions, erosion rills, tire tracks, etc. with proper planting soil mix to ensure site drainage. 3.23 FINAL OWNER ACCEPTANCE A. Final Owner Acceptance of Irrigation System is predicated on: 1. Complete system installation, adjustment, testing, and instructional overview. 2. Submission of Operation and Maintenance Manuals to Owner’s Representative. 3. Proper Programming of Automatic Irrigation Controller. 4. Completed and approved all punchlist items. 5. Approved Commissioning Report by Owner’s Representative. B. Owner and/or Owner’s Representative shall provide written notice (hard copy and/or electronic) for Final Acceptance. C. Date of Final Owner Acceptance notice shall serve as start of 1-year Guarantee period as described above. END OF SECTION (THIS PAGE IS BLANK)