BYU CITY FIRE STATION 02813 - LAWN SPRINKLER PIPING THIS SPECIFICATION SECTION - “LAWN SPRINKLER PIPING” IS “NIC”. THIS WORK WILL BE COMPLETED BY OTHERS. THE CONTRACTOR SHALL BE RESPONSIBLE TO COORDINATE THIS WORK AND PROVIDE THE FOLLOWING: 1. THE GENERAL CONTRACTOR SHALL PROVIDE ROUGH PRE-FINISHED GRADE TO WITHIN 0.2' OF THE FINAL GRADE AT LANDSCAPE AREAS 2. THE GENERAL CONTRACTOR SHALL PROVIDE UNDER-PAVEMENT SLEEVES AS SHOWN ON SHEET L 102 3. THE GENERAL CONTRACTOR SHALL PROVIDE NORTH AND EAST FENCING. 4. THE GENERAL CONTRACTOR SHALL PROVIDE PAVEMENTS AND DRAINAGE SYSTEMS.

PART 1 - GENERAL 1.1

RELATED DOCUMENTS A.

1.2

SUMMARY A.

1.3

This Section includes piping, automatic control valves, backflow preventer, sprinklers, lawn sprinkler specialties, automatic controller and electrical control wiring.

DEFINITIONS A. B. C. D.

1.4

Drawings and general provisions of the Contract, including General and Supplementary Conditions.

CIRCUIT PIPING: Downstream from control valves to sprinklers, specialties, and drain valves. Piping is under pressure during flow. PRESSURE PIPING: Downstream from point of connection to water distribution piping to and including control valves. Piping is under water distribution system pressure. The following are industry abbreviations for plastic materials: 1) PVC: Polyvinyl chloride plastic. SYSTEM PERFORMANCE REQUIREMENTS Minimum Water Coverage: 100 percent of turf and planting areas. 1) Location of Sprinklers and Specialties: Design location is approximate. Make minor adjustments necessary to avoid buildings, retaining walls, fences, trees, signs and light standards. 2) Minimum Working Pressures: The following are minimum pressure requirements for piping, valves, and specialties, unless otherwise indicated: a. Pressure Piping: 200 psi b. Circuit Piping: 200 psi

SUBMITTALS A.

Product Data: Include pressure rating, rated capacity, settings, and electrical data of

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BYU CITY FIRE STATION selected models for the following: 1) Valves. Include aboveground and underground; general-duty, manual and automatic control, and quick-coupler types. 2) Valve boxes, including 6" diameter pull-boxes 3) Sprinkler heads: Include all varieties on Irrigation Legend. 4) Automatic Controller. Include either pedestal mounting or wall mounting diagrams. 5) PVC Pipe. 6) PVC Sch 40 Grey Conduit for control wires. 7) Sweep Ells for control wires. 8) PVC Fittings. 9) Primer & Glue. 10) Swing Joints. 11) Control Wires 12) Ball Valves 13) Backflow Preventer 14) Strong Box Enclosure 15) Maintenance Data: Include data for the following: a. Automatic control valves. b. Sprinkler heads c. Automatic Controller d. Backflow Preventer 1.5

QUALITY ASSURANCE A.

Product Options: Drawings indicate size, profiles, and dimensional requirements of lawn sprinkler piping components and are based on specific types and models indicated. 1) Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction. 2) Comply with NFPA 70, "National Electrical Code," for electrical connections between wiring and electrically operated devices.

B. C.

DELIVERY, STORAGE, AND HANDLING 1)

2)

Preparation for Transport: Prepare valves according to the following: a. Ensure that valves are dry and internally protected against rust and corrosion. b. Protect valves against damage to threaded ends and flange faces. c. Set valves in best position for handling. Set valves closed to prevent rattling. During Storage: Use precautions for valves according to the following: a.

3) 4) 5) 6) 1.6.

Do not remove end protectors unless necessary for inspection; then, reinstall for storage. b. Protect from weather. Store indoors and maintain temperature higher than ambient dew-point temperature. Support off ground or pavement in watertight enclosures when outdoor storage is necessary. Deliver piping with factory-applied end caps. Maintain end caps through shipping, storage, and handling to prevent pipe-end damage and to prevent entrance of dirt, debris, and moisture. Protect stored piping from moisture and dirt. Elevate above grade. Do not exceed structural capacity of floor when storing inside. Protect flanges, fittings, and specialties from moisture and dirt. Store plastic piping protected from direct sunlight. Support to prevent sagging and bending.

PROJECT CONDITIONS

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BYU CITY FIRE STATION B. Research public utility records, and verify existing utility locations. 1) Investigate and determine available water supply water pressure and flow characteristics. 2) Site Information: Reports on subsurface condition investigations made during design of Project are available for informational purposes only; data in reports are not intended as warranties of accuracy or continuity of conditions (between soil borings). Owner assumes no responsibility for interpretations or conclusions drawn from this information. 1.7

SEQUENCING AND SCHEDULING A.

B.

Maintain uninterrupted water service to building during normal working hours. Arrange for temporary water shutoff with Owner. 1) Arrange for water shut-off with Owner. 2) Coordinate lawn sprinkler piping with utility work. EXTRA MATERIALS 1) 2) 3) 4)

Furnish extra materials described below that match products installed and that are packaged with protective covering for storage and identified with labels describing contents. Deliver extra materials to Owner. Quick Couplers: Furnish 2 units of each size installed. Sprinklers: Furnish 10 units of each type installed. Quick-Coupler Operating Keys: Furnish 2 units of each type of quick coupler installed.

PART 2 - PRODUCTS 2.1

MANUFACTURERS A.

Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 2)

BRONZE CORPORATION STOPS AND VALVES for Underground Installation:

Ford Meter Box Co., Inc. Grinnell Corp.; Mueller Co.; Water Products Div. Jones: James Jones Co. Kitz Corp. of America. Lee Brass Co. Master Meter, Inc. McDonald: A.Y. McDonald Mfg. Co.Red Hed Manufacturing Co. 2)

BRONZE, AUTOMATIC CONTROL VALVES: a. Rain Bird Sprinkler Mfg. Corp. b. Toro Co., Irrigation Div. c. Hunter Industries Inc.

3)

PLASTIC, AUTOMATIC CONTROL VALVES: a. Rain Bird Sprinkler Mfg. Corp. b. Toro Co., Irrigation Div c. Hunter Industries Inc.

4)

CONTROL-VALVE BOXES: a. AMETEK; Plymouth Products Div. b. Carson-Brooks Plastics, Inc.

5)

QUICK COUPLERS: a. Rain Bird Sprinkler Mfg. Corp.

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BYU CITY FIRE STATION b. c.

2.2

B.

SPRINKLERS: a. Rain Bird Sprinkler Mfg. Corp. b. Toro Co., Irrigation Div c. Hunter Manufacturing

7)

MISCELLANEOUS SPECIALTIES: a. Rain Bird Sprinkler Mfg. Corp. b. Toro Co., Irrigation Div c. Hunter Industries Inc.

8)

CONTROLLERS: a. Rain Bird Sprinkler Mfg. Corp. b. Toro Co., Irrigation Div c. Hunter Industries Inc.

Backflow preventer shall be as called for on the irrigation legend or equal. The size shall be equal to the mainline which feeds this valve. Valve shall be tested to withstand pressures of 175 psi and meeting ASSE, CSA, IAPMO listed, SBCCI, USC approvals. The backflow enclosure shall be of a vandal and weather resistant nature manufactured entirely of marine grade aluminum alloy 5052-H32, with a wall thickness of one eighth inch. The mounting base shall be manufactured entirely of stainless steel. The main housing shall be of solid sheet construction punched on the sides with a rectangular pattern for viewing backflow operation. The length of the enclosure shall be expandable to allow for site adjustment. The enclosure shall have a mounting lip on one end and a locking mechanism on the other end. The mounting base shall be submerged into the concrete a minimum of two inches, and position the enclosure two and one half inches above the concrete for drainage purposes. The locking mechanism shall be of the full release type which allows for complete removal of the enclosure from its mounting base without the use of tools. The handle controlling the locking mechanism shall be concealed within the surface of the enclosure and provide for a padlock.

PIPES AND TUBES a. b.

2.4

6)

BACKFLOW PREVENTER A.

2.3

Toro Co.; Irrigation Div. Hunter Industries Inc.

PVC Pipe: ASTM D 1785, PVC 1120 compound, Schedules 40. PVC Pipe : Sch 40 (Grey) Conduit for Control Wires.

PIPE AND TUBE FITTINGS a. b.

PVC Socket Fittings for Circuit Piping, Schedule 40: ASTM D 2466. PVC Socket Fittings for Pressure Piping, Schedule 80: ASTM D 2467. PVC

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BYU CITY FIRE STATION

c. 2.5

VALVES AND VALVE SPECIALTIES a. b. c.

d.

2.6

Threaded Fittings: ASTM D 2464. PVC Sweep Ells for control wires.

Electric remote control valves: All electric remote control valves shall be of the size and type as specified on the Irrigation Legend. Cast-Iron, Nonrising-Stem Gate Valves: MSS SP-70, Type I, solid wedge; nonrising stem and flanged ends. Include all bronze trim; Class 125, ASTM A 126, cast-iron body; and handwheel. Bronze Ball Valves: MSS SP-110, Class 150, 600-psi cold working pressure. Include bronze, two-piece construction body with regular port; chrome-plated brass ball; blowout-proof stem; PTFE seats and seals; threaded-end connections; and lever handle. Quick-Couplers: Factory-fabricated, bronze or brass, two-piece assembly. Include coupler water-seal valve; removable upper body with spring-loaded or weighted, rubber-covered cap; hose swivel with ASME B1.20.7, 3/4-11.5NH threads for garden hose on outlet; and operating key. 1) Locking Top Option: Include vandal-resistant, locking feature with two matching keys. 2) Curb-Stop Service Boxes: Cast iron with telescoping top section of length required for depth of bury of valve, cover with lettering "WATER," bottom section with base of size to fit over curb stop, and 3-inch diameter barrel. Include steel tee-handle shutoff rod with one pointed end, stem of length to operate curb stop, and slotted end fitting curb-stop head. 3) Control-Valve Boxes: PE, ABS, fiberglass, polymer concrete, or precast concrete box and cover, with open bottom, openings for piping, and designed for installing flush with grade. Include size as required for valves and service. 4) Drainage Backfill: Cleaned gravel or crushed stone, graded from 1 inch to 3/4 inch minimum.

SPRINKLERS b. c. d. e. f.

Description: Manufacturer's standard sprinklers designed for uniform coverage over entire spray area indicated, at available water pressure. Components: Plastic housing and stainless steel and corrossion-resistant interior parts. Pop-up, Spray Sprinklers: Fixed pattern, with screw-type flow adjustment and stainless-steel retraction spring. Pop-up, Rotary, Spray Sprinklers: Gear drive, full-circle and adjustable part-circle types. Pop-up, Rotary, Impact Sprinklers: Impact drive, full-circle and part-circle types.

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BYU CITY FIRE STATION

2.7

AUTOMATIC CONTROL SYSTEM a.

b. c. d. e.

f. g. h.

i.

Exterior Control Enclosures: Weatherproof enclosure with locking cover and two matching keys; and include provision for grounding, using a 3 rod grounding system as per the manufactures recommendations. Material: Stainless-steel, sheet metal. Transformer: Internal; and suitable for converting 120-V, ac building power to 24-V, ac power. Controller Stations for Automatic Control Valves: Each station is variable from approximately 0ne to 99 minutes. Include switch for manual or automatic operation of each station. Timing Device: Refer to Irrigation Legend on drawings. 1) Manual or Semiautomatic Operation: Allow this mode without disturbing preset automatic operation. 2) Nickel-Cadmium Battery and Trickle Charger: Automatically power timing device during power outages. Wiring: UL 493, Type UF, solid-copper-conductor, insulated cable, suitable for direct burial. Feeder-Circuit Cables: No. 12 AWG minimum, between building and controllers, to be hard wired. No splicing or plug-in connection allowed. Low-Voltage, Branch-Circuit Cables: No. 14 AWG minimum, between controllers and automatic control valves and color-coded different than feeder-circuit-cable jacket color and with jackets of different colors for multiple-cable installation in same trench. Splicing Materials: 3M DBY Splicing Kits.

PART 3 - EXECUTION 3.1

PREPARATION A.

3.2

Set stakes to identify proposed lawn sprinkler locations. Obtain Architect's approval before excavation.

TRENCHING AND BACKFILLING A. B. C.

D.

Refer to detail on the drawings for excavating, trenching, and backfilling. Install piping and wiring in 4" PVC sleeves under sidewalks, roadways, parking lots. Drain Pockets: Excavate to sizes indicated. Backfill with cleaned gravel or crushed stone, graded from 1inch to 3/4 inch minimum, to 12 inches below grade. Cover gravel or crushed stone with sheet of asphalt-saturated felt and backfill remainder with excavated material. Provide minimum cover over top of underground piping according

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BYU CITY FIRE STATION

to the detail shown on the drawings. 3.3

PIPING APPLICATIONS B.

B.

Install components having pressure rating equal to or greater than system operating pressure. 1) Piping in control-valve boxes and aboveground may be joined with flanges instead of joints indicated. 2) Underground, Pressure Piping: Use the following: 3) 4-Inch NPS and Smaller: Schedule 40 PVC pipe. 4) Sch 80 PVC Fittings. Circuit Piping: Use the following: 1) 2-Inch NPS and Smaller: Schedule 40 PVC pipe, Schedule 40 PVC socket fittings, and solvent-cemented joints. 2) Underground Branches and Offsets at Sprinklers and Devices: refer to details on the drawings for swing joints. 3) Sleeves: Schedule 40 PVC pipe, Schedule 40 PVC socket fittings, and solvent-cemented joints. 4) Control Wires: 2" PVC Sch 40 conduit (grey), throughout the entire length of the control wire run from the valve box to the controller. A.. B.. C..

3.4

VALVE APPLICATIONS A.

3.5

Provide 6" diameter valve boxes @ a maximum distance of 300 feet in straight runs and at every 90 degree change of direction. Use only “Sweep Ells” at directional changes. Do not exceed 3 sweep ells without providing a 6" diameter pull-box.

Underground, Shutoff-Duty Valves: Use the following: 1) 2-Inch NPS and Smaller: Curb stop, with tee head, curb-stop service box, and shutoff rod. 2) Control Valves: Refer to Irrigation Legend on drawings.

JOINT CONSTRUCTION A.

All mainline joints shall be glued as per manufacturers recommendations, using both the proper primer and glue. All joints must be allowed to set for a minimum of 24 hours prior to pressure testing. 1) All lateral line PVC joints shall be glued as per manufacturers recommendations, using both the proper primer and glue. All joints must be allowed to set for a minimum of 24 hours prior to pressure testing. 2) All Cast-Iron Joints on the mainline shall be fitted as per manufacturers recommendations, using both the proper “O-Ring” and pipe manipulation, as required.

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BYU CITY FIRE STATION

3.5

PIPING INSTALLATION A.

B. C. D. E. F. G. H.

3.6

VALVE INSTALLATION A. B.

3.7

Install in valve box as per the detail on the drawings. Drain Valves: Install in 2" PVC sleeve with locking lid.

SPRINKLER INSTALLATION A. B. C.

3.9

Underground Gate Valves: Install in valve box as per the details on the drawings. Underground Stop and Waste Valves: Install in service box as per the detail on the drawings.

ELECTRIC REMOTE CONTROL VALVES: A. B.

3.8

Locations and Arrangements: Drawings indicate location and arrangement of piping systems, which were used to size pipe and calculate friction loss, and other design considerations. Install piping as indicated, unless deviations are approved on Coordination Drawings. Install piping at uniform slope of 0.5 percent minimum, down toward drain valves. Install piping free of sags and bends. Install groups of pipes parallel to each other with a 6 inch min. separation , as per the detail on the drawings. Install fittings for changes in direction and branch connections. Install unions adjacent to valves and as per the detail on the drawings. Lay piping on solid subbase, uniformly sloped without humps or depressions. Install PVC piping in dry weather when temperature is above 40 deg F. Allow joints to cure at least 24 hours at temperature above 40 deg F before testing, unless otherwise recommended by manufacturer.

Flush circuit piping with full head of water and install sprinklers after hydrostatic test is completed. Install lawn sprinklers at manufacturer's recommended heights. Locate all sprinklers to maintain a minimum distance of 2 inches from all boundaries, unless otherwise indicated.

AUTOMATIC CONTROL SYSTEM INSTALLATION A. B. C.

Install controllers according to manufacturer's recommendations and as shown in detail on the drawings. Install control wiring as per the detail on the drawings. CONNECTIONS 1) Connect piping to valves, sprinklers, and specialties. 2) Connect water supplies to lawn sprinkler piping with backflow

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BYU CITY FIRE STATION

3) 4) 5)

6)

3.10

FIELD QUALITY CONTROL B.

3.11

B. C. D.

Flush dirt and debris from piping before installing sprinklers and other devices. Adjust automatic control valves to provide flow rate of rated operating pressure required for each sprinkler circuit. Carefully adjust lawn sprinklers so they will be not more than ½ inch below finish grade. Adjust settings of controllers and automatic control valves.

COMMISSIONING A.

3.13

Testing: Hydrostatically test piping and valves before backfilling trenches. Piping may be tested in sections. 1) Cap and test piping with static water pressure of 150 psi. 2) Repair leaks and defects with new materials and retest system or portion thereof until satisfactory results are obtained.

CLEANING AND ADJUSTING A.

3.12

preventers at connections to potable-water supplies. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, Article 100, by a testing agency acceptable to authorities having jurisdiction. Ground electric-powered controllers, valves, and devices with a 3 rod grounding system as per the manufactures recommendations. Tighten electrical connectors and terminals according to manufacturer's published torque-tightening values. If manufacturer's torque values are not indicated, use those specified in UL 486A and UL 486B. Arrange for electric-power connections to controllers, control valves, and devices that require power. Electric power, wiring, and disconnect switches are specified in Division 16 Sections.

Starting Procedures: Follow manufacturer's written procedures. If no procedures are prescribed by manufacturers, proceed as follows: 1) Verify that specialty valves and their accessories are installed and operate correctly. 2) Verify that specified tests of piping are complete. 3) Verify that sprinklers and devices are correct type. 4) Verify that damaged sprinklers and devices are replaced with new materials. 5) Verify that potable-water supply connections have backflow preventers. 6) Energize circuits to electrical equipment and devices. 7) Adjust operating controls.

DEMONSTRATION

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BYU CITY FIRE STATION

a. b.

Demonstrate to Landscape Architect and the Owner's maintenance personnel operation of equipment, sprinklers, specialties, and accessories. Review maintenance information. Provide seven days' advance written notice of demonstration. END OF SECTION 02813

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