Attachment 10 - 32 84 00 Planting Irrigation Specs - Project 648-20-121.pdf

08-01-16

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SECTION 32 84 00

PLANTING IRRIGATION

SPEC WRITER NOTE: Delete text between // ______ // not applicable to project.

Edit remaining text to suit project.

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Automatically-controlled lawn, trees, and shrub irrigation system, controllers and all other appurtenances.

1.2 RELATED REQUIREMENTS

A. Concrete Work, Reinforcing, Placement and Finishing: Section 03 30 00, CAST-IN-PLACE CONCRETE.

B. Metering: SECTION 25 10 10, ADVANCED UTILITY METERING SYSTEM.

C. Excavation, Trench Widths, Pipe Bedding, Backfill, Shoring, Sheeting, Bracing: Section 31 20 00, EARTH MOVING.

1.3 ABBREVIATIONS

A. HDPE: High-density polyethylene plastic.

B. NPT: National pipe thread.

C. PTFE: Polytetrafluoroethylene.

D. PVC: Polyvinyl chloride plastic.

1.4 DEFINITIONS

A. Circuit Piping: Downstream from control valves to sprinklers, specialties, and drain valves.

B. Drain Piping: Downstream from circuit-piping drain valves.

C. Main Piping: Downstream from point of connection to water distribution piping to, and including, control valves.

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

1.5 APPLICABLE PUBLICATIONS

A. Comply with references to extent specified in this section.

B. American Society Of Mechanical Engineers (ASME):

1. B16.18-2012 - Cast Copper Alloy Solder Joint Pressure Fittings.

2. B16.22-2013 - Wrought Copper and Copper Alloy Solder Joint Pressure

Fittings.

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3. B16.24-2011 - Cast Copper Alloy Pipe Flanges and Flanged Fittings:

Classes 150, 300, 600, 900, 1500 and 2500.

4. B40.100-2013 - Pressure Gauges and Gauge Attachments.

C. American Society Of Sanitary Engineering (ASSE):

1. 1013-2011 - Reduced Pressure Principle Backflow Preventers and

Reduced Pressure Principle Fire Protection Backflow Preventers.

D. ASTM International (ASTM):

1. B88-14/B88M-13 - Seamless Copper Water Tube.

2. B813-10 - Liquid and Paste Fluxes for Soldering of Copper and Copper

Alloy Tube.

3. D1785-15 - Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedule 40, 80, and 120.

4. D2239-12- Polyethylene (PE) Plastic Pipe (SIDR) Based on controlled

Inside Diameter.

5. D2241-15 - Poly(Vinyl Chloride) (PVC) Pressure Rated Pipe (SDR

Series).

6. D2464-15 - Threaded Poly (Vinyl Chloride) (PVC) Plastic Pipe

Fittings, Schedule 80.

7. D2466-15 - Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40.

8. D2564-12 - Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic

Piping Systems.

9. D2609-15 - Plastic Insert Fittings for Polyethylene (PE) Plastic

Pipe.

10. D2683-14 - Socket-Type Polyethylene Fittings for Outside

Diameter-Controlled Polyethylene Pipe and Tubing.

11. D2855-15 - Two-Step (Primer and Solvent Cement) Method of Joining Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride)

(CPVC) Pipe and Piping Components with Tapered Sockets.

12. F477-14 - Elastomeric Seals (Gaskets) for Joining Plastic Pipe.

E. American Water Works Association (AWWA):

1. C504-15 - Rubber-Seated Butterfly Valves.

2. C906-15 - Polyethylene (PE) Pressure Pipe and Fittings, 4 In.

Through 65 In. (100 mm Through 1,650 mm), for Waterworks.

F. American Welding Society (AWS):

1. A5.8/A5.8M-04 - Filler Metals for Brazing and Braze Welding.

G. National Fire Protection Association (NFPA):

1. 70 2011 Edition - National Electrical Code.

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1.6 PREINSTALLATION MEETINGS

A. Conduct preinstallation meeting minimum 30 days before beginning Work of this section.

1. Required Participants:

a. Contracting Officer's Representative.

b. Contractor.

c. Installer.

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

a. Installation schedule.

b. Installation sequence.

c. Preparatory work.

d. Protection before, during, and after installation.

e. Installation.

f. Terminations.

g. Transitions and connections to other work.

h. Inspecting and testing.

i. Other items affecting successful completion.

3. Document and distribute meeting minutes to participants to record decisions affecting installation.

1.7 SUBMITTALS

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

B. Submittal Drawings:

1. Show size, configuration, and installation details.

2. Show complete detailed irrigation layout covering design of system showing pipe sizes and lengths; fittings; locations; types and sizes of sprinklers; controls; backflow preventers; valves; location and mounting details of electrical control equipment, complete wiring diagram showing routes and wire sizes for; power, signal and control wiring details and connections to water supply main.

3. Do not start work before final shop drawing approval.

C. Manufacturer's Literature and Data:

1. Description of each product.

a. Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories.

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b. Include zone chart and controller timing schedule showing each irrigation zone and its control valve; and show time settings for each automatic controller zone.

2. Installation instructions.

3. Warranty.

D. Certificates: Certify products comply with specifications.

1. Control systems.

2. Show control system is UL Listed for specified application.

E. Delegated Design Drawings and Calculations: Signed and sealed by responsible design professional.

F. Operation and Maintenance Data:

1. Start-up, maintenance, troubleshooting, emergency, and shut-down instructions for each operational product.

1.8 QUALITY ASSURANCE

A. Installer Qualifications:

1. Regularly installs specified products.

2. Installed specified products with satisfactory service on five similar installations for minimum five years.

1.9 DELIVERY, STORAGE, AND HANDLING

A. Deliver products in manufacturer's original sealed packaging.

B. Mark packaging, legibly. Indicate manufacturer's name or brand, type, production run number, and manufacture date.

C. Before installation, return or dispose of products within distorted, damaged, or opened packaging.

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

1.10 WARRANTY

A. Construction Warranty: FAR clause 52.246-21, "Warranty of

Construction."

PART 2 - PRODUCTS

2.1 SYSTEM DESCRIPTION

A. Irrigation Zone Control: Automatic operation with controller and automatic control valves.

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2.2 SYSTEM PERFORMANCE

A. Delegated Design: Prepare submittal documents including design calculations and drawings signed and sealed by registered design professional, licensed in state where work is located.

2.3 MATERIALS

A. Piping Materials:

1. Polyethylene (PE) Plastic Pipe with Controlled ID: ASTM D2239

a. Fittings: ASTM D2609.

b. Flange Gaskets, Bolts, and Nuts: Type as recommended by manufacturer.

2. Polyethylene (PE) Plastic Pipe: AWWC906 with dimension ratio of 7.3, 9, or 9.3 to provide 1380 kPa (200 psi) minimum pressure rating.

a. Fittings: ASTM D3261 ASTM D2683.

3. Polyvinyl Chloride (PVC) Pipe: ASTM D1785 PVC 1120, Schedule 40; or

ASTM D2241, PVC 1120 compound.

a. Fittings:

1) Socket Type: ASTM D2466, Schedule 40.

2) Threaded Type: ASTM D2464, Schedule 80.

3) Swing Joints: Threaded fittings with elastomeric seals and minimum 1380 kPa (200 psi) working pressure.

b. Solvent Cement: ASTM D2564.

c. Flange Gaskets, Bolts, and Nuts: Type as recommended by manufacturer.

B. Valves:

1. Underground Shut-Off Valves:

a. Ball Valves, Isolation valves, 38 mm (1-1/2 Inch) and Smaller:

Full-port ball valves with bronze body, PTFE seats, and 90 degree on/off handle. Ball valves to have NPT female end connections.

b. Operations:

1) Underground Applications: Use valves with 50 mm (2 inch) nut for T-Handle socket wrench operation.

2) Aboveground and Valve Pit Applications: Use valves with handwheels.

3) Provide enclosed gear drive operators for all butterfly valves 150 mm (6 inches) and larger.

4) Valve ends: Accommodate type of main pipe adjacent to valve.

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2. Pressure Reducing Valve: Cast steel body with renewable seats and stainless steel trim. Design flow passages and all parts to withstand high velocity applications, flange connected.

3. Remote Control Valves: Solenoid actuated valves, 24 Volt AC, installed underground.

a. Globe Valves: Heavy duty construction with manual shut-off and flow control adjustment manual operation.

b. Straight or Angle Valve:

1) Cast iron valve body with brass bonnet, trim and renewable seat with two inlet taps.

2) Molded-plastic body, normally closed diaphragm type with manual shut off and flow control adjustment.

c. Provide valves with unions and housing with minimum working pressure, 1025 kPa (150 psi).

4. Quick Couplers: Brass parts, two-piece unit consisting of coupler water seal valve assembly and removable upper body to allow spring and key track to be serviced without shut down of main.

a. Lids: Lockable vinyl cover with springs for positive closure on key removal.

b. Provide hose swivels and operating keys for each size coupler to

Contracting Officer’s Representative.

5. Reduced Pressure Principle Backflow Preventer: ASSE 1013. Provide for new connection to water distribution system.

6. Valves Serviceability: From top without removing valve body from system. Provide 750 mm (30 inch) long adjustment keys. Valves to operate at no more than 50 kPa (7 psi) pressure loss at manufacturers maximum recommended flow rate.

C. Sleeve Material: ASTM D2241, Schedule 40.

1. remote control valves, with manufacturer's recommended components.

2.4 SPRINKLER HEADS

A. Sprinkler Heads: Manufacturer's standard unit designed to provide uniform coverage over entire area of spray as indicated on Drawings.

Internal assembly includes filter screen, capable of removal from top without removing sprinkler case from riser.

1. Rotary Pop-Up Sprinklers: Gear-driven, impact resistant heavy-duty

ABS with gears and pinions assembled on stainless steel spindles.

a. Full circle sprinklers, dual or tri-nozzle combination type with positive water-driven gear assembly.

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b. Part circle sprinklers, variable arc type.

2. Shrub Spray: Pop-up or fixed spray type with heavy-duty, ultraviolet resistant plastic sprinkler body, stem, nozzle, and screen and stainless steel retract spring and ratcheting system for alignment of pattern.

3. Drip Emitters: Pressure compensating, permanently assembled type with 13 mm (1/2 inch) FPT inlet, capable of providing 3.8 L/min.

(1 gpm) at inlet pressures between 100 and 340 kPa (15 and 50 psi).

4. Emitter Distribution Tubing: Constructed of UV resistant vinyl material, 5.5 mm (0.22 inch) O.D. and 4 mm (0.16 inch) I.D., manufactured by same manufacturer as drip emitters.

2.5 LOW VOLTAGE CONTROL VALVE WIRE

A. Wire: NFPA 70, solid copper wire, minimum1.8 mm (14 gage), UL LLC approved for direct burial in ground.

2.6 LOW VOLTAGE CONTROLLER CABLE

A. Multi-strand cable, UL-approved for direct burial in ground, size and wire type according to manufacturer’s recommendations.

2.7 TRACER WIRES

A. Tracer Wires: Plastic-coated copper tracer wire, 1.8 mm (14 gage), green, Type TW, installed with non-metallic irrigation main lines.

2.8 SPLICING MATERIALS

A. Epoxy waterproof sealing packet.

2.9 ACCESSORIES

A. Valve Box: Precast concrete with compressive strength in excess of

30 MPa (4,000 psi). Provide valve boxes suitable and adjustable for valve used.

1. Cast word “Irrigation” on cover.

2. Provide "T" handle socket wrenches, 15 mm (5/8 inch) round stock with sufficient length to extend 600 mm (2 feet) above top of deepest valve box cover.

3. Stencil controller and circuit numbers with permanent white epoxy paint. Letters minimum 75 mm (3 inches) height.

4. Provide 760 mm (30 inches) long valve adjustment keys.

5. Valve Box in Plant Bed Areas: HDPE structural foam Type A, Class

III.

a. Color: Green.

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b. Size: Minimum 480 (19 inches) long by 355 mm (14 inches) deep with key-lockable hinged cast iron cover.

B. Backflow Preventer: ASSE 1013.Provide reduced pressure principle backflow preventer at each new connection to water distribution system.

C. Strainers:

1. Brass Strainer Basket:

a. Bodies smaller than 63 mm (2-1/2 inches), brass or bronze.

b. Bodies 63 mm (2-1/2 inches) and larger, cast iron or semi-steel.

c. Provide strainer cover with blow-off connection and shut-off valve to accommodate 18 mm (3/4 inch) diameter hose connection.

D. Warning Tape: Polyethylene film warning tape, 0.1 mm (4 mils) thick, 75 mm (3 inches) wide, detectable imprinted with “CAUTION BURIED

IRRIGATION WATER LINE BELOW”, colored as follows:

1. Purple with Black Letters: Reclaimed or untreated well water.

PART 3 - EXECUTION

3.1 PREPARATION

A. Examine and verify substrate suitability for product installation.

B. Protect existing construction and completed work from damage.

C. Examine proposed irrigation areas for compliance with requirements and conditions affecting installation and performance.

D. Set stakes to identify locations of proposed irrigation system. Obtain

Contracting Officer’s Representative's approval before excavation.

3.2 INSTALLATION - GENERAL

A. Install products according to manufacturer's instructions and approved submittal drawings.

1. When manufacturer's instructions deviate from specifications, submit proposed resolution for Contracting Officer's Representative consideration.

B. Perform excavation, trenching, and backfilling for sprinkler system as specified in Section 31 20 00, EARTHWORK.

3.3 PIPE INSTALLATION - GENERAL

A. Layout work as indicated on drawings. Lines are to be in common trench wherever possible.

B. Install sprinkler lines to avoid HVAC trenches, electric ducts, storm and sanitary sewer lines, and existing water and gas mains; all of which have right of way.

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C. Cut existing sidewalks and curbs during trenching and installation of pipe. Install pipe under sidewalks and curbs by jacking, auger boring, or by tunneling. Repair or replace any cracked concrete, due to settling, during warranty period.

D. Do not lay pipe on unstable material, in wet trenches or, in opinion of

Contracting Officer’s Representative, when trench or weather conditions are unsuitable for work.

E. Allow minimum of 75 mm (3 inches) between parallel pipes in same trench.

F. Clean interior portion of pipe and fittings of foreign matter before installation. Securely close open ends of pipe and fittings with caps or plugs to protect fixtures and equipment against dirt, water and chemical or mechanical injury. At completion of all work thoroughly clean fixtures, exposed materials and equipment.

G. Install full length of each section of pipe resting upon pipe bed with recesses excavated to accommodate bells or joints. Do not lay pipe on wood blocking.

H. Hold pipe securely in place while joint is being made.

I. Do not work over, or walk on, pipe in trenches until covered by layers of earth, well tamped, in place to depth of 300 mm (12 inches) over pipe.

J. Install irrigation lines and control wire at boundaries of graves, through designated utility lanes or beside roadways without disruption of irrigation system.

K. Install irrigation lines and control wire at designated utility lanes or beside roadways where possible.

L. Install concrete thrust blocks where irrigation main changes direction at “L” and “T” locations and where irrigation main terminates. Delay pressure tests until minimum 36 hours after completing thrust blocks.

Size and place concrete thrust blocks for supply mains according to pipe manufacturer's instructions.

M. Minimum cover over water mains, 760 mm (30 inches). Cover laterals to minimum depth of 600 mm (24 inches).

N. Place warning tape 300 mm (12 inches) above sprinkler system water mains and laterals.

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3.4 PLASTIC PIPE INSTALLATION

A. Install plastic pipe snaked in trench at least 1 m per 30 m (1 foot per

100 feet) to allow for thermal construction and expansion and to reduce strain on connections.

B. Joints:

1. Solvent Welded Socket Type: ASTM D2855.

2. Threaded Type: Apply liquid Polytetrafluoroethylene (PTFE) thread lubricant or PTFE thread tape. After joint is made hand tight

(hard), strap wrench should be used to make up to two additional full turns.

3. Elastomeric Gasket: ASTM F477.

3.5 VALVE INSTALLATION

A. Group remote control valves wherever possible and aligned at set dimension back of curb along roads.

B. Do not install valves under roads, pavement or walks.

C. Clean interior of valves of foreign matter before installation.

D. House pressure control valves installed adjacent to remote control valve in same valve box.

E. Install valve box with cover flush with finished grade.

F. Install control valves minimum75 mm (3 inches) below finished grade.

3.6 SLEEVE INSTALLATION

A. Install sleeves where pipe and control wires are installed under walks, paving, walls, and other similar areas.

B. Install sleeves twice line size or greater extend 300 mm (12 inches) beyond edges of paving or construction.

C. Bed sleeves with minimum 100 mm (4 inches) sand backfill above top of pipe in areas where pipe is placed before hardscape is installed.

3.7 EMITTER HOSE INSTALLATION

A. Joint: Solvent weld connection.

B. Install line size by 9 mm (3/8 inch) insert bushings adapters from PVC

Schedule 40 fittings to flex vinyl hose.

3.8 SPRINKLER AND QUICK COUPLER INSTALLATION

A. Install sprinkler heads and quick couplers on temporary nipples extending at least 75 mm (3 inches) above finished grade. After turf is established, remove temporary nipples, install sprinkler heads and quick couplers at ground surface.

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B. Locate part circle heads to maintain maximum distance of 150 mm

(6 inches) from edges and other boundaries.

C. Provide swing joint assembly in all sprinklers, shrub sprays and quick couplers.

D. Set shrub spray heads 200 mm (8 inches) above grade and 300 mm

(12 inches) from edge of curb or pavement. Place adjacent to walls.

Stake heads before backfilling trenches. Support stakes parallel to riser.

E. Install entire system for manual and automatic draining. Equip low point of each underground line with drain valve draining into an excavation containing gravel. Backfill with excavated material and cover with 50 mm (2 inches) precast concrete cover.

3.9 AUTOMATIC IRRIGATION - CONTROL SYSTEM INSTALLATION

A. Determine exact location of controllers in field before installation.

Coordinate electrical service to these locations. Install according to manufacturer's instructions and NFPA 70.

3.10 CONTROL WIRE INSTALLATION

A. Install electric control cable in trenches with new mains or in separate trench at back of curb, unless cross-country route is indicated on Drawings. Locate in trench with mains when possible on cross-country routes.

B. Install wiring bundles located with piping 50 mm (2 inches) below bottom of pipe. Color code each wire in bundle differently. Bundle multiple wires and tape together at 4570 mm (15 foot) intervals. Tag wires at controllers and control valve location with plastic tie wire tags. Provide same number and color of wire at each ends.

C. Hold splicing to minimum. Provide pullbox at each splice. No splices will be allowed between field located controllers and remote control valves.

D. Provide 300 mm (12 inch) expansion loops in wiring at each wire connection or change in wire direction. Provide 600 mm (24 inches) loop at remote control valves.

E. Do not install power wires for operation of irrigation system in same conduit as irrigation control wires.

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3.11 TRACER WIRE INSTALLATION

A. Install tracer wire on bottom of trench, adjacent to vertical pipe projections, and continuous throughout length of pipe, with spliced joints soldered and covered with insulation type tape.

B. Install tracer wire following main line pipe and branch lines and terminate in yard box with gate valve controlling these main irrigation lines. Provide sufficient length of wire to reach finish grade, bend back end of wire to make loop and attach plastic label with designation

"Tracer Wire."

C. Record locations of tracer wires and their terminations on project record documents.

3.12 FRAMED INSTRUCTIONS

A. Post framed instructions, containing wiring and control diagrams under glass or in laminated plastic, where directed by Contracting Officer.

Condensed operating instructions, prepared in typed form, framed and posted beside diagrams. Post framed instructions before acceptance testing of system. Submit labels, signs, and templates of operating instructions that are required to be mounted or installed on or near product for normal, safe operation. Prepare controller charts and programming schedule after as-built drawings are approved by

Contracting Officer. Provide one black-line chart for each controller as reduced drawing of actual as-built system that will fit maximum dimensions inside controller housing. Indicate each station coverage area with different pastel or transparent color on chart. After chart is completed and approved for final acceptance, laminate chart, sealed between two 0.5 mm (20 mil) pieces of clear plastic.

3.13 FIELD QUALITY CONTROL

A. Field Tests and Inspections: Performed by testing laboratory specified in Section 01 45 29, TESTING LABORATORY SERVICES.

1. Pressure test lines before joint areas are backfilled. Backfill minimum of 300 mm (12 inches) over pipe to maintain pipe stability during test period. Test piping at hydraulic pressure of 1030 kPa

(150 psi) for two hours.

a. Maximum Loss: 3 L/25 mm pipe diameter/300 m (0.8 gallons per inch pipe diameter per 1,000-feet). Locate pump at low point in line and apply pressure gradually. Install pressure gage shut-off valve and safety blow-off valve between pressure source

32 84 00 - 13 and piping. Inspect each joint and repair leaks. Repeat test until satisfactory results are achieved and accepted by

Contracting Officer's Representative.

2. After testing, flush system with minimum 150 percent of operating flow passing through each pipe beginning with larger mains and continuing through smaller mains in sequence. Flush lines before installing sprinkler heads and quick couplers.

3. Charge system and test for leaks after installation. Repair leaks and retest until no leaks exist.

4. After electrical circuitry has been energized and final adjustment of sprinkler heads is complete, test each sprinkler section by pan test and visual test to indicate uniform distribution within any one sprinkler head area and over entire area. Operate controllers and automatic control valves to demonstrate complete and successful installation and operation of all equipment.

B. Test and adjust controls and safeties. Replace damaged and malfunctioning controls and equipment. Any irrigation product will be considered defective if it does not pass tests and inspections.

C. Prepare test and inspection reports.

3.14 PROTECTION

A. Protect irrigation system from traffic and construction operations.

B. Remove protective materials immediately before acceptance.

C. Repair damage.

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3. Document and distribute meeting minutes to participants to record decisions affecting installation.

c. Provide valves with unions and housing with minimum working pressure, 1025 kPa (150 psi).

B. Perform excavation, trenching, and backfilling for sprinkler system as specified in Section 31 20 00, EARTHWORK.