SECTION 02811

LANDSCAPE IRRIGATION

PART 1 GENERAL

SECTION INCLUDES

Pipe and fittings, valves, sprinkler heads [, emitters] [, bubblers] and accessories.

Control system.

RELATED SECTIONS

Section 02225 - Trenching: Excavating and backfilling for irrigation piping.

Section 02923 - Landscape Grading.

Section [_____-__________]: Water supply.

Section 16111 - Conduit.

Section 16123 - Wire and Cable.

Section 16180 - Equipment Wiring Systems: Power supply connections.

REFERENCES

ANSI/ASTM D2282 - Acrylonitrile-Butadiene-Styrene (ABS) Plastic Pipe (SDR-PR).

ANSI/ASTM D2564 - Solvent Cement for Poly (Vinyl Chloride) (PVC) Plastic Pipe and Fittings.

ASTM B32 - Solder Metal.

ASTM B42 - Seamless Copper Pipe, Standard Sizes.

ASTM B88 - Seamless Copper Water Tube.

ASTM D2235 - Solvent Cement for Acrylonitrile - Butadiene - Styrene (ABS) Plastic Pipe and Fittings.

ASTM D2241 - Poly (Vinyl Chloride) (PVC) Plastic Pipe (SDR-PR).

FS O-F-506 - Flux, Soldering; Paste and Liquid.

NEMA 250 - Enclosures for Electrical Equipment (1000 Volts Maximum).

UNIT PRICE - MEASUREMENT AND PAYMENT

Piping:

Basis of Measurement: By the linear [foot] [________] ([meter] [________]).

Basis of Payment: Includes trenching, placing pipe and fittings, valves, control box, conduit and wiring, and accessories.

Sprinkler Heads:

Basis of Measurement: By the unit.

Basis of Payment: Includes sprinkler head and fittings.

SYSTEM DESCRIPTION

[Manual] [Electric solenoid] [Hydraulic] [Thermal hydraulic] controlled underground irrigation system, with [low point self] [pressure blow-out] drain.

Source Power: [120] [____] volt, [____] A., [____] phase.

Low Voltage Controls: [24] [____] volt, [____] A.

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings: Indicate piping layout to water source, location of sleeves under pavement, location and coverage of sprinkler heads, components, plant and landscaping features, site structures, schedule of fittings to be used.

Product Data: Provide component and control system and wiring diagrams.

Samples:	Provide one outlet of each type, with housing. [Accepted samples may [not] be used in the Work.]

PROJECT RECORD DOCUMENTS

Submit under provisions of Section [01700.] [________.]

Record actual locations of all concealed components [, piping system] [, conduit] and [________________].

OPERATION AND MAINTENANCE DATA

Submit under provisions of Section [01700.] [________.]

Provide instructions for operation and maintenance of system and controls, seasonal activation and shutdown, and manufacturer's parts catalog.

Provide schedule indicating length of time each valve is required to be open to provide a determined amount of water.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the products specified in this section with minimum [three] [_______] years [documented] experience.

Installer: Company specializing in performing the work of this section [with minimum [__________] years [documented] experience] [approved by manufacturer].

REGULATORY REQUIREMENTS

Conform to [applicable] [________] code for piping and component requirements.

Provide certificate of compliance from [authority having jurisdiction [________] indicating approval of products in system.

PRE-INSTALLATION CONFERENCE

Convene [one] [_____] week prior to commencing work of this Section, under provisions of Section [01039.] [________.]

FIELD MEASUREMENTS

Verify that field measurements are as [indicated [on shop drawings].] [instructed by the manufacturer.]

COORDINATION

Coordinate work under provisions of Section [01039.] [________.]

Coordinate the work with site backfilling, landscape grading and delivery of plant life.

EXTRA MATERIALS

Furnish extra components under provisions of Section [01700] [________]:

[Two] [____] sprinkler heads of each type and size.

[Two] [____] valve keys for manual valves.

[Two] [____] valve box keys.

[Two] [____] keys for valve markers.

[Two] [____] wrenches for each type head core and for removing and installing each type head.

PART 2 PRODUCTS

PIPE MATERIALS

Manufacturers:

[__________________________________].

[__________________________________].

[__________________________________].

PVC Pipe: ASTM D2411; [200] [____] psi ([1.38] [____] MPa) pressure rated upstream from controls, [160] [____] psi ([1.10] [____] MPa) downstream; [solvent welded sockets] [rubber gasketed joints].

****** [OR] ******

ABS Pipe: ANSI/ASTM D2282; [160] [____] psi ([1.10] [____] MPa) pressure rated upstream from controls, [100] [____] psi ([0.69] [____] MPa) downstream; [solvent-weld sockets] [rubber gasketed joints].

****** [OR] ******

Copper Tubing: ASTM B88 Type [K] [L] [M]; [annealed] [drawn] temper.

****** [OR] ******

Copper Pipe: ASTM B42 [Regular] [Extra Strong].

Fittings: Type and style of connection to match pipe.

Solvent Cement: [ANSI/ASTM D2564 for PVC pipe and fittings] [ASTM D2235 for ABS pipe and fittings].

****** [OR] ******

Solder and Flux:	ASTM B32 Type [95TA] [____] solder; [FS O-F-506] [paste] flux.

Sleeve Material: [PVC.] [________.]

OUTLETS

Manufacturers:

[_________________________________] Model [________].

[_________________________________] Model [________].

[_________________________________] Model [________].

Outlets: [Brass] [or] [bronze] [________] construction.

Rotary Type Sprinkler Head: [Fixed] [Pop-up] type [with] [without] screens; fully adjustable for flow and pressure; size as indicated; with letter or symbol designating degree of arc and arrow indicating center of spray pattern.

Spray Type Sprinkler Head: [Fixed surface head] [Pop-Up head with [full circle] [half circle] [third circle] [quarter circle] [square] pattern].

Emitter:	Adjustable outlet, non-clogging, [with [two] [____] trickle tubes,] [________________].

Bubbler: Adjustable outlet and [________________].

Quick Coupler:	[________________].

VALVES

Manufacturers:

[_________________________________] Model [________].

[_________________________________] Model [________].

[_________________________________] Model [________].

[Gate] [Ball] [____] Valves:	[Bronze] [________] construction [, non-rising stem] [, inside screw with threaded ends] [and] [________].

Backflow Preventers:	[Iron] [Bronze] body construction, [double check valve] [reduced pressure zone] [atmospheric] type.

Valve Box [and Cover]:	[________________].

Drain Valve: [________________].

CONTROLS

Manufacturers:

[_________________________________] Model [________].

[_________________________________] Model [________].

[_________________________________] Model [________].

Controller: [________________].

****** [OR] ******

Controller: [Automatic] [Manual] controller, [microprocessor solid state control with visible readout display] [motor driven timer with relay switches], [temporary override feature to bypass cycle for inclement weather,] timer for a [4] [6] [____] station system, programmable for [7] [10] [14] days in [quarter] [________] hour increments, with automatic start and shutdown.

Controller Housing: NEMA 250 Type [3] [3R] [4]; weatherproof, watertight, with lockable access door.

Valves: [Hydraulic] [Electric Solenoid] [Thermal Hydraulic]; normally [open] [closed]; [hydraulic tubing,] [wiring,] including required fittings and accessories.

[Wire Conductors: Color coded.]

PART 3 EXECUTION

INSTALLERS

[____________________________________].

[____________________________________].

[____________________________________].

EXAMINATION

Verify site conditions under provisions of Section [01039.] [________.]

Verify location of existing utilities.

Verify that required utilities are available, in proper location, and ready for use.

PREPARATION

Piping layout indicated is diagrammatic only. Route piping to avoid plants, ground cover, and structures.

Layout and stake locations of system components.

Review layout requirements with other affected work. Coordinate locations of sleeves [under paving] to accommodate system.

TRENCHING

Trench and backfill in accordance with Section [02225.] [________.]

Trench Size:

Minimum Width:	[____] inches ([____] mm).

Minimum Cover Over Installed Supply Piping: [____] inches ([____] mm).

Minimum Cover Over Installed Branch Piping: [____] inches ([____] mm).

Minimum Cover Over Installed Outlet Piping: [____] inches ([____] mm).

Trench to accommodate grade changes [and slope to drains].

Maintain trenches free of debris, material, or obstructions that may damage pipe.

INSTALLATION

Install pipe, valves, controls, and outlets in accordance with manufacturer's instructions.

Connect to utilities.

Set outlets and box covers [at finish grade elevations] [________________].

Provide for thermal movement of components in system.

Slope piping for self drainage to [gravel filled well point] [drainage pit] [________].

Use threaded nipples for risers to each outlet.

Install control [wiring] [tubing] in accordance with Section [16123] [________]. Provide 10 inch (250 mm) expansion coil at each valve to which controls are connected, and at 100 ft (30 m) intervals. Bury [wire] [tubing] beside pipe. Mark valves with neoprene valve markers containing locking device. Set valve markers in [160 psi (1.10 mPa) PVC] [100 psi (0.69 mPa) ABS] [200 psi (1.4 MPa) copper] pipe risers exiting from top of valve to finish grade.

After piping is installed, but before outlets are installed and backfilling commences, open valves and flush system with full head of water.

Coordinate pipe installation with Section [________] and conduit installation.

FIELD QUALITY CONTROL

Field [inspection and] testing will be performed under provisions of Section [01400.] [________.]

Prior to backfilling, test system for leakage [at main piping] [for whole system] to maintain [100] [____] psi ([690] [____] kPa) pressure for one hour.

System is acceptable if no leakage or loss of pressure occurs [and system self drains] during test period.

BACKFILLING

[Provide [3] [____] inch ([75] [____] mm) sand cover over piping.] Backfill trench and compact to subgrade elevation as specified in Section [02225] [________]. Protect piping from displacement.

INSTALLER'S FIELD SERVICES

Prepare and start systems under provisions of Section [01600.] [________.]

Provide one complete spring start-up and a fall shutdown.

ADJUSTING

Adjust work under provisions of Section [01650.] [________.]

Adjust control system to achieve time cycles required

[Change] [Adjust] head types for full water coverage as directed.

DEMONSTRATION

Provide system demonstration under provisions of Section [01670.] [________.]

Instruct Owner's personnel in operation and maintenance of system, including adjusting of sprinkler heads. Use operation and maintenance material as basis for demonstration.

SCHEDULES

Perimeter of Grassed Areas: Pop-Up half circle heads.

Corners of Grassed Areas: Pop-Up quarter circle heads.

Within Grassed Areas: Pop-Up full circle heads.

Planters: Fixed square pattern head, and one emitter per 4 sq ft of planter area.

END OF SECTION