328400_Irrigation_Specs_100__Bid_amended_6-25-14.pdf

Confidential and Proprietary Information Contract #2

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031814 LANDSCAPE IRRIGATION

SECTION 32 84 00 – LANDSCAPE IRRIGATION

GENERAL

1.1 SUMMARY

A. Section includes: Fully operative irrigation system. The project Limits of Work for the irrigation systems are shown on the Drawings.

B. Scope includes:

1. Comply with the instructions provided in Division 01 of the Specifications.

2. Accurate layout of irrigation system.

3. Trenching, excavating and backfilling for installation of all underground materials.

4. Installation of pipe, mainline marker tape, fittings, sprinklers, drip-tubing, filters, control valves, gate valves, quick-couplers, valve boxes, pump-station with flow-sensors and master valves, computer for central controller software, field satellite controller, two-wire communication cable, decoders, radio antenna, hand-held remote control units, solar-powered wireless weather-station and other related accessory items.

5. Connections to existing ductile iron mainline and lateral pipe, sleeves for pipes located under pavements as indicated on Drawings, some boring of new lateral feed lines, and conduit for two-wire communication cable where not in mainline trench.

6. Adjustments in elevations of valve boxes, if necessary, after completion of finish grading and seeding.

7. Electric work (field wiring and connections) required to operate the irrigation systems.

8. Plumbing/mechanical work required to install, connect and operate the booster pump-station for the irrigation system.

9. Grounding of equipment called for by manufacturers, per manufacturers’ instructions.

10. Protection of completed system until accepted by Contract Officer.

11. Restore all trenches to original finish grade; compact soil, and seed disturbed areas.

C. Related Work:

1. General Provisions of the Contract, including the General and Supplementary Conditions and Division 1 - General Requirements of the Specifications, apply to work of this

Section.

2. Section 32 1216 Asphalt Paving

3. Section 32 9200 Turf and Grasses

4. Section 32 9300 Planting

1.2 REFERENCES

A. American National Standards Institute (ANSI)

B. American Society for Testing and Materials (ASTM):

1. ASTM D698, Standard Test Methods for Moisture-Density Relations of Soils and

Soil-Aggregate Mixtures Using 5.5-lb. Rammer and 12-inch Drop.

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2. ASTM D1248, Standard Specification for Polyethylene Plastics Molding and Extrusion

Materials.

3. ASTM D1784, Standard Specification for Rigid Poly (Vinyl Chloride) (PVC) Compounds and Chlorinated Poly (Vinyl Chloride) (CPVC) Compounds.

4. ASTM D2241, Standard Specification for Poly (Vinyl Chloride) (PVC) Pressure-Rated

Pipe (SDR-Series).

5. ASTM D2564, Solvent cement for polyvinyl chloride plastic pipe and fittings.

6. ASTM D2672, Standard Specification for Bell-End Poly Vinyl Chloride (PVC) Pipe.

C. American Society of Mechanical Contracting Officers (ASME)

D. National Fire Protection Agency (NFPA)

E. Plastic Pipe Institute (PPI)

F. Underwriters' Laboratories, Inc. (UL)

1.3 SUBMITTALS

A. In addition to requirements of Section 01 33 23 “Submittal Procedures” (see Division 01 –

General Requirements), submit manufacturers’ technical data for all components of the irrigation system, including the appropriate and necessary CM-SPE Transmittal Form.

B. Contract Closeout Submittals:

1. Record Drawings: After completion of the installation, furnish a record drawing

(commonly called: ‘As-Builts’) in electronic format (CAD and PDF as described in

Section 01 33 23), showing point-of-connection, pump-station (with flow-sensor and master valve), mainline alignment and size, isolation valves, communication cable routing (if not in mainline trench), control valves and decoders, size and alignment of laterals, sprinkler heads, drip-tubing, quick-couplers, drip-zone kits and air-relief valve locations all at scale with dimensions and offsets from fixed points/landmarks in the field.

On plans, valve-I.D. tags shall have correct station assignment number listed, with arrow pointing to referenced valve. (Note: air-relief valve locations are not shown on plan;

contractor responsible for locating all localized high-points of the mainline where air could be trapped, existing or new high-points.) Submit shop-drawing showing locations before proceeding.

2. In addition to requirements of Section 01 33 23 “Submittal Procedures” (see Division 01 –

General Requirements), submit a programming data chart and zone-by-zone worksheet

(of site characteristics and irrigation product specifics for each zone) for the weather-based central controller. Contracting Officer shall review and/or modify the values assigned (for each of the zone parameters, plant watering needs within each zone, etc.)

prior to the contractor’s initial programming of the controller.

3. Provide final programming data chart and zone-by-zone worksheet (of site characteristics and irrigation product specifics for each zone) to serve as a guide for the owner in case modifications to the weather-based central controller are necessary in the future. This should be in Excel and PDF format.

4. Provide serial numbers, registration numbers, and contact information for the radios, weather-station, and central control computer hardware and software required for system.

5. File for, and obtain, FCC license for UHF radios and hand-helds, for central control system.

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6. Bind data in three (3) 3-ring loose-leaf notebooks of appropriate size, or in binders as approved by Contracting Officer.

7. Provide closeout submittals at completion of work, and before final payment will be issued.

1.4 QUALITY ASSURANCE

A. General: Layout work accurately in accordance with the Drawings. The Drawings, though carefully drawn, are generally diagrammatic. Actual equipment (connection to and alignment of mainline running parallel to the Processional Walk from Contract #1), isolation valves, pump-station with master valve and flow-sensor, mainline and sleeve locations, control valves, drip-zone kits and related valve-boxes, etc.) may need to be adjusted or oriented differently to accommodate actual on-site Project conditions and to avoid conflicts with other site elements/utilities/trades/contracts.

B. Installer's Qualifications: Company shall meet the requirements of the General Conditions

(Division 01) of the Specifications with experience in the installation of automatic irrigation systems for commercial projects, using experienced installers who have worked on projects similar in size to this proposed Project. Provide proof of competence prior to Contract award by submitting list of projects of similar scope, using similar equipment/products (specifically the weather-based central controller), and submit qualifications of responsible parties who will be associated with the installation.

C. Contractors Responsibility:

1. Regulatory Requirements: Perform work in accordance with all governing requirements of the following:

a. Municipal and State standards, including any local permits required before installation.

b. State plumbing code, latest edition.

c. State electric code and NEC, latest edition.

2. Plumbing Work:

a. Irrigation contractor shall Sub-Contract plumbing work specified in this section to a licensed plumbing contractor, as required by local and state regulatory requirements, and as indicated on Drawings to provide a fully operative irrigation system.

b. Plumbing Contractor shall provide Contracting Officer documentation of inspection

(backflow preventer, etc.) and approval of work by all governing regulatory agencies.

3. Electric Work:

a. Irrigation contractor shall Sub-Contract electric work specified in this section to a licensed electrical contractor, as required by local and state regulatory requirements, and as indicated on Drawings to provide a fully operative irrigation system.

b. Electrical Contractor shall provide Contracting Officer documentation of inspection

(pump-station, controller, etc.) and approval of work by all governing regulatory agencies.

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1.5 SITE CONDITIONS

A. Source of water supply for irrigation system: Contractor shall connect to existing supply pipes leading from existing backflow preventer in vault (see Civil drawings) providing water for the system, as shown on Drawings. The 10” RPZ backflow preventer is intended to remain in place, and shall be used for the new irrigation system. The existing infrastructure equipment

(water meter, service line, backflow preventer, discharge line from backflow) is expected to provide up to 600 gpm at Connection Point ‘A’, west of the Operations & Maintenance

Building (O&M). Contractor shall communicate with other trades and Contracting Officer to coordinate closure of water service prior to accessing existing mainline to install pump-station, the vault for the pump and other related equipment and fittings necessary to complete the work. (See Civil specification Section #33 11 13, paragraph 2.11 and drawing #C220 for booster-pump vault. While the vault is not within the scope of the irrigation contractor’s work, the actual pump-station and its connections to water/power supply is part of the irrigation contractor’s scope.) At the point-of-connection (A) for irrigation contractor (after the backflow preventer), water pressure is anticipated to be approximately 45-50 psi. The booster pump-station is designed to increase water pressure, at discharge, to approximately

105-110 psi.

1.6 COORDINATION, SEQUENCING AND SCHEDULING

A. Coordination: Other improvements will have occurred at the Project site under separate contracts. Contractor shall comply with the requirements called for in Specifications: Division

01, Section 01 31 00 (Project Management and Coordination), and Section 01 32 16

(Construction Schedule Requirements). Contractor shall coordinate all irrigation (and related accessories) crossing the Contract Limit lines with the Contracting Officer and adjacent

Contractor performing the extension of the work. Coordination-drawings showing depth, location and alignment shall be submitted by both Contractors meeting at the Contract Limit

Line, and the timing of interconnections shall be as determined by the Contracting Officer.

B. On East Slopes (east of railroad, on Sheets #I207, I208 and I209 in Contract #2), irrigation contractor will need to coordinate with grading and landscape contractors so that pipe (mainline and laterals) can be installed concurrently with slope construction. (See sheet #L915 for slope stabilization details and instructions).

1.7 WARRANTY/GUARANTEE

A. Description: For a period of one year after date of Substantial Completion of work performed under this Contract, Contractor shall promptly furnish and install, without cost to Owner, parts which prove to be defective in either material or workmanship.

PRODUCTS

2.1 MANUFACTURERS

A. Acceptable Manufacturers for Irrigation System Whole-Good Equipment (control valves, sprinklers and nozzles, and drip-irrigation):

1. Toro

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2. Rain Bird

3. Irritrol

4. Hunter

5. Netafim (drip only)

B. Acceptable Manufacturers for Consideration of Irrigation System Central Control:

1. Toro (Sentinel with Two-wire Field Satellites and solar-powered, wireless weather-station.)

2. RainMaster (Oasis Central Control with DX2 Evolution controllers and solar-powered, wireless weather-station)

3. CalSense (Command Center with ET2000-E controllers and solar-powered, wireless weather-station)

2.2 MATERIALS AND EQUIPMENT

A. General Requirements:

1. Provide and install only new materials and equipment.

2. PVC pipe, HDPE pipe, fittings, sprinklers and nozzles, bubblers, drip-tubing, drip-fittings, isolation valves, booster pump-station (with master valves and flow-sensors incorporated into the package), control valves, isolation valves, drip-zone kits, quick-couplers, valve-boxes, two-wire communication cable, decoders, central controller computer and software, field satellites with integrated UHF radios (including FCC license), hand-held remote radios, and solar-powered wireless weather station shall all be compatible.

2.3 BACKFLOW PREVENTER

A. General: There is an existing 10” Reduced-Pressure Assembly backflow preventer in a vault.

This is intended to remain in place, and these shall be used for the new irrigation system.

Contractor shall perform testing for the backflow preventer in their contract, and assure that it is appropriately equipped and meets standards required by local code. If corrective work is required to make backflow preventer work properly, or bring it up to code, then such work will be paid as a Change Order.

2.4 PIPE

A. Polyvinyl-Chloride Pipe (PVC):

1. Replacement of Existing and Extensions of Mainline Pipe: Pipe shall meet the requirements of AWWA C900 ASTM D1784 polyvinyl chloride (PVC) pressure pipe (Class 200; SDR

21) and fabricated fittings, 3”-12”, for water distribution. Where connecting existing ductile iron pipe to new Class 200 PVC pipe, provisions must be made for expansion and contraction at each joint with an elastomeric seal contractor shall provide and install a ductile-iron repair coupling with transition gasket joining to the new Class 200 PVC pipe.

Repair couplings should be secured to the pipe using ‘Clam-shell’ restraints (6”-10”

HARCO #820611, #820811, #821011 or approved equal by LEEMCO), or ‘Knuckle-joint’ restraints (3”-4” HARCO #60-100-03, #60-100-04 or approved equal by

LEEMCO). The bell shall consist of an integral thickened wall section with an elastomeric seal. The wall thickness in the bell section shall conform to the requirements of Section 6.2 of ASTM D3139. The pipe shall be manufactured to cast-iron outside dimensions (CIOD) in accordance with AWWA C900. All new C900 mainline pipe that

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is 3” diameter and larger shall be gasketed, with HARCO (or approved equal: LEEMCO) ductile-iron fittings and joint restraints where angled fittings, elbows and tees occur.

2. Lateral Pipe (non-pressurized): All new lateral pipe (2.5” diameter and smaller) shall be

Class 200 PVC, SDR 21 solvent-weld pipe. Lateral pipe 3” diameter and larger shall be

Class 200 PVC, SDR 21 gasketed pipe and shall comply with requirements of ASTM

D1784. All new lateral pipes shall be continuously and permanently marked PVC pipe with manufacturer's name, material, and schedule or type.

3. Pipe: Comply with requirements of ASTM D2241 and D2672, or latest revision.

4. Sleeves of 4” diameter and smaller shall be Schedule 40 PVC; sleeves of 6” diameter and larger shall be Class 200 SDR 21 PVC.

5. Conduits for two-wire communication cable (control cable), where not in same trench as the mainline, shall be in 2” diameter Schedule 40 PVC, at a minimum depth of 24”.

Place underground plastic marker tape (12” depth) along entire route of communication cable, whether in conduit (not with mainline) or in trench with new mainline.

6. Polyethylene Lateral Pipe: Not used on this project, except drip-tubing.

7. Underground Plastic Markers: As shown in the ‘Utility Corridor’ cross-section, contractor shall place, at a depth of 12” beneath the surface, bright colored continuously printed plastic ribbon tape of not less than 6 inches wide by 4 mil thick, printed legend indicating type of underground line, manufactured for direct burial service. Tape shall contain a continuous metallic wire to allow location with a metal detector.

B. High-Density Polyethylene (HDPE):

1. Some instances occur where there is a need to bore under existing trees, to split large existing zones into more manageable smaller zones. In an effort to not damage the trees nor disturb the surface soils, the contractor shall directionally bore from a point along an accessible existing mainline to a location (shown on plans) where a new control valve will be located. Other situations occur where the pipe to be bored will serve as the lateral, providing irrigation water to a distant zone/group of sprinklers.

2. Contractor shall provide shop-drawings describing the materials, details of the entrance and exit points of the bore, and the fusing process they propose to accomplish this task. To be included in the shop drawings shall be a detailed list of the ductile-iron fittings (HARCO) to be used at connection points at both ends.

3. The HDPE pressure pipe shall be manufactured with premium PE4710 resin. The PE4710 material shall conform to ASTM D3350 with the cell classification of 445574C/E and shall be listed with the Plastic Pipe Institute’s (PPI) TR4. The pipe shall be formulated with carbon black and/or ultraviolet stabilizer for maximum protection against UV rays.

4. The HDPE pipe shall be 4” IPS, DR11 (200 psi), meeting ASTM D3350 and ASTM F714 standards.

5. Standard laying lengths of HDPE pressure water pipe is 40-50 foot lengths. Pipe sizes smaller than 6” may be coiled at continuous longer lengths, for ease of installation.

6. The standard markings printed on pipes shall consist of: nominal size and OD base, material code, dimension ratio, pressure class, current AWWA C906, ASTM F714, and production date (day, month, & year).

2.5 DUCTILE IRON FITTINGS AND ACCESSORIES

A. Fittings: Push-on joint fittings (3”-10” size) shall be manufactured of ductile iron, Grade 65-

45-12 in accordance with ASTM A536. The fittings shall have a pressure rating of 350 psi

(minimum), and a tensile strength of 65,000 psi. Fittings shall have deep bell push-on joints with gaskets meeting ASTM F477. Configurations are available in tees, bends, reducers, plugs, JEFF - 181202 32 84 00 -7 service tees, flange adapters, wyes, and male-thread by bell adapters. Basis of Design (BoD) fittings shall be DEEP BELL as manufactured by HARCO (Harrington Corporation), or approved equal by LEEMCO. or equal. Transition gaskets are not allowed.

B. Fitting to Pipe Joint Restraint 3”-4”: Knuckle Joint Restraint for connecting 3”-4” push-on ductile iron fittings to pipe shall be knuckle type (model #60-100-03 and #60-100-04); BoD is as manufactured by HARCO, or approved equal by LEEMCO. The grip ring shall be one piece residing within a ductile iron housing having machined serrations and shall be activated by one bolt. Housing and grip ring shall be of ductile iron to ASTM A536. Bolt and nut shall be Type

304 stainless steel.

C. Fitting to Pipe Joint Restraint 6”-10”: HARCO fitting to pipe restraints (6”-10”) shall be of

‘Clamshell’ type (BoD is HARCO #820611, #820811, #821011 or approved equal by

LEEMCO). Fitting to pipe restraints shall meet the requirements of Unibell B-13-94. Grip ring serrations shall be machined, as cast serrations are not permitted. Restraint rods, bolts and nuts shall be of ductile iron to ASTM A563 or low alloy steel to AWWA/ANSI C111/A21.11. There may be times when additional lengths of pipe are required to hold the fitting, which is when the pipe to pipe restraint is used.

D. Pipe to Pipe Restraints 3”-10”: Site conditions may require sections of existing ductile iron pipe to be removed and replaced (with C900 Class 200 PVC, SDR 21 pipe), which will require pipe to pipe restraints. Depending upon the material and condition of the existing pipe, contractor shall provide and install a ductile-iron repair coupling with transition gasket joining to the new

Class 200 PVC pipe. Repair couplings should be secured to the pipe using ‘Clam-shell’ restraints (6”-10” HARCO #820611, #820811, #821011 or approved equal by LEEMCO), or

‘Knuckle-joint’ restraints (3”-4” HARCO #60-100-03, #60-100-04 or approved equal by

LEEMCO). Where pipes of similar size and type are joined, pipe to pipe restraints shall meet the requirements of Unibell B-13-94. Grip ring serrations shall be machined, as cast serrations are not permitted. (BoD is HARCO #820315, #820415, #820615, #820815, #821015 or approved equal by LEEMCO). Restraint rods, bolts and nuts shall be of ductile iron to ASTM

A563 or low alloy steel to AWWA/ANSI C111/A21.11.

E. Fitting to Valve to Pipe Restraints: Fitting to Valve to Pipe Restraints shall consist of ductile iron

(ASTM A536) grip rings with machined serrations and ductile iron restraint rods. The ring that grips the pipe shall meet the requirements of Uni-B-13-94. The restraint rod nuts shall be made from low alloy steel to AWWA/ANSI C111/A21.11 or ductile iron to ASTM A536. (BoD for

3” F-V-P restraint is by HARCO #820322, #820422, #820622, #820822 or approved equal by

LEEMCO). Where 2” or smaller control valve connects to mainline, provide one HARCO ductile-iron service tee (gasketed x 2” female-threaded for under 100 gpm), with 2”x12”

Schedule 80 PVC threaded nipple. For connecting sub-main to mainline for a manifold of grouped valves (within 4 ft.), refer to “Fitting to Pipe Joint Restraint” sections above.

2.6 VALVES

A. Automatic Remote Control Valves and Accessories: Manufactured by either: The Toro

Company (Toro and/or Irritrol), or Rain Bird.

1. Master Valve: Incorporated into each pump-station. See pump-station specifications, this section.

2. Flow-Sensor: Incorporated into each pump-station. See pump-station specifications, this section.

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3. Control Valves: Basis of Design: Toro P220 Series (3”, 2”, 1.5” and 1” with DC-latching solenoids) such as model #P220-27-90. Valve shall be rated to operate up to 220 psi, with a burst pressure safety rating of 750 psi. All valves shall include factory installed pressure-regulation feature. Note: with Toro control system, all valves must have DC-latching solenoids instead of AC solenoids. If other control system is selected, ensure compatibility.

4. Drip-zone valve-kit combinations:

a. Tree-Pit Watering Zones: Basis of Design: Rain Bird drip-zone valve kit #XCZ-

100-PRB-COM for high-flow (20 gpm) commercial applications, with pressure-regulating basket filter, using 200 mesh filter-screen. The Rain Bird PESB valve shall be equipped with a DC-latching solenoid. Note: with Toro control system, all valves must have DC-latching solenoids instead of AC solenoids. If other control system is selected, ensure compatibility.

b. Other drip-zones: Basis of Design: Rain Bird #XCZ-100-PRB-COM (3-20 gpm).

Note: with Toro control system, all valves must have DC-latching solenoids instead of AC solenoids. If other control system is selected, ensure compatibility.

c. Use in-line Pressure-regulator (40 psi) or PR basket filter, not valve-PR feature for drip-zones.

d. Pressure-regulating filter basket (with 200-mesh stainless-steel screen): Rain Bird model: #QKCHK-200.

5. Drip-zone ball valves: Within the Processional Walk Tree-Pit zones, each two trees shall have a ½” (or ¾”) brass ball-valve that regulates the flow of water to either an inner ring of bubblers for the first two years, or an outer network of drip-tubing for years

2-6 during establishment. Initially, while the ball-valve that regulates the bubblers should be open, the other valve regulating the drip-tubing shall remain closed.

6. Air-Release Valves: Val-Matic model #15A.3 (1”) at all localized high-points of mainline throughout site. (Note: these locations are not shown on plan; contractor responsible for locating all localized high-points of the mainline where air could be trapped, existing or new high-points.) Submit shop-drawing showing locations before proceeding.

7. Provide valve sizes indicated on the Drawings and install in valve boxes of appropriate size and type as specified under Valve Boxes for Automatic Remote Control Valves, in this Section.

B. Valve Boxes for Automatic Remote Control Valves: Plastic valve boxes manufactured by Carson

(OldCastle), Highline, Rain Bird or approved equal. Provide all valve-boxes with black lids.

Sizes shall be as follows: 12-inch ‘standard’ valve-boxes for drip-zone valve-kits and single control valves; 10-inch round boxes for quick-couplers, and air-release valves at high-points along the mainline. No 6-inch valve-boxes will be allowed. Valve boxes are to be filled with a minimum of 6-inches of washed gravel (minimum ¾” diameter stones) below pipe level to ensure adequate drainage.

C. Valve Boxes for Quick Coupling Valves: 10-inch round plastic valve boxes with black lids manufactured by Carson (OldCastle), Highline, Rainbird or approved equal. For quick-couplers, provide valve boxes with locking black lids.

D. Manual Mainline Isolation Valves: Nibco or Matco iron body gate type valve with resilient seal non-rising stem designed for a working pressure of not less than 150 psi. Above each valve, install Highline (or equal) valve box with black lid: black box top section with 7-1/2” opening, white box bottom (of appropriate length) and integral valve key when top of mainline is 20”-

48” below grade.

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E. Quick Coupling Valves: Provide all quick couplers and accessories by same manufacturer.

1. Toro Model #100-SLLVC (1” with lavender vinyl cover) with #100-SLK key to match existing NPS equipment inventory. All shall be mounted on 1” Sch 40 PVC triple-elbow swing-joints by either Lasco or Spears. Provide stabilizing rod/post, as shown in detail.

Provide two (2) appropriately sized keys and hose-swivels for quick couplers.

2.7 ACCESSORY MATERIALS

A. Key for Control of Quick Coupling Valves: Provide two (2) Toro #100-SLK keys.

B. Hose Junction Swivels: Provide two (2) Toro 1” hose-swivels #100-MHS.

C. Quick Coupling Swing Joints: Schedule 40 PVC tee and 1” swing-joint with three 90-degree swivel-elbows (Lasco or Spears only).

D. Weather-Station:

1. Provide and install solar-powered, wireless weather station (BoD: Davis Instruments model #6162 “Vantage Pro 2 Plus”) to send weather data to central controller inside

Operations & Maintenance Building. The wireless weather station shall include two components: the Integrated Sensor Suite (ISS) which houses and manages the external sensor array, and the console which provides the user interface, data display, and calculations. The ISS and console communicate via an FCC‐certified, license‐free, spread‐spectrum frequency‐hopping (FHSS) transmitter and receiver. User‐selectable transmitter ID codes allow up to eight stations to coexist in the same geographic area.

The frequency hopping spread spectrum technology provides greater communication strength over longer distances and areas of weaker reception. The weather station shall include two additional sensors that are optional on many models: the UV sensor and the solar radiation sensor. Provide and install within 150 feet of controller on existing light pole north of the parking spaces just north of the entry doors to the O&M Building, where shown on plans. Coordinate exact location and orientation with Contracting

Officer. Use #07717 mounting pole and hardware to mount and install station according to manufacturer’s specifications. Contractor shall ensure proper wireless communications between outside weather station and weather console by computer (inside O&M

Building).

2. Integrated Sensor Suite:

a. Operating Temperature: -40° to +150°F (-40° to +65°C)

b. Non-operating Temperature: -40° to +158°F (-40° to +70°C)

c. Current Draw (ISS SIM only): 0.14 mA (average), 30 mA (peak) at 4 to 6 VDC

d. Solar Power Panel: 0.5 Watts (ISS SIM)

e. Battery (ISS SIM): CR-123 3-Volt Lithium cell

f. Battery Life (3-Volt Lithium cell): 8 months without sunlight - greater than 2 years depending on solar charging

g. Connectors, Sensor: Modular RJ-11

h. Cable Type: 4-conductor, 26 AWG

i. Cable Length, Anemometer: 40’ (included)

j. Wind Speed Sensor: Solid state magnetic sensor

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k. Wind Direction Sensor: Wind vane with potentiometer

l. Rain Collector Type: Tipping bucket, 0.01" per tip; 33.2 sq in collection area

m. Temperature Sensor Type: PN Junction Silicon Diode

n. Relative Humidity Sensor Type: Film capacitor element

o. Housing Material: UV-resistant ABS, ASA plastic

3. Console:

a. Console Operating Temperature: +32° to +140°F (0° to +60°C)

b. Non-Operating (Storage) Temperature: +14° to +158°F (-10° to +70°C)

c. Current Draw: 0.9 mA average, 30 mA peak, (add 120 mA for display lamps) at 4-6

VDC

d. AC Power Adapter: 5 VDC, 300 mA, regulated

e. Batteries: 3 C-cells

f. Battery Life: up to 9 months

g. Connectors: Modular RJ-11

h. Housing Material: UV-resistant ABS plastic

i. Console Display Type: LCD Transflective

j. Display Backlight: LEDs

k. Console Dimensions:

Console with antenna down (L x H x D): 10.625" x 6.125" x 1.625"

Console with antenna extended up (L x H x D): 10.625" x 9.625" x 1.625"

Display (L x H): 5.94" x 3.375"

l. Weight (with batteries): 1.88 lbs.

4. Provide and install (inside) software, and data-logger/connector between weather console and computer (BoD: Davis Instruments model #6510-SER).

E. Flow-Sensor: Incorporated into each pump-station. See pump-station specifications, this section.

Ensure that Data Industrial (Badger Meter) flow sensors are installed with manufacturer’s recommended distances before and after other devices (tees/fittings). Refer to manufacturers’ websites for appropriate K-values and offsets of sensors.

2.8 SPRINKLERS

A. Single-stream Rotors:

1. Gear-driven 1” inlet rotors shall be (BoD) Toro T7 Series with #16 nozzles delivering

16.4 gpm, with 60-ft radius operating at 65 psi. Most new 1” rotors will be installed in existing sprinkler locations, with spacings of 55-60 feet. For design purposes, rotors with a discharge of 16.3-16.6 gpm operating at 65 psi were considered to be a common platform. Radius of throw at 65 psi needs to be 60-66 feet. Other rotors considered equal for performance reasons are: Irritrol ‘Platinum Sport’ (16 nozzle) and Rain Bird 8005 (16 nozzle).

a. Submit an ‘Add-Alternate’ price for providing and installing 1” rotors that match the original equipment used throughout the park: Or approved equal: Toro 640 (#43 nozzle for full-circle)

2. Gear-driven, ¾” inlet mid-range rotors shall be (BoD) Rain Bird 5004-SAM bodies with

Rain Bird’s “Rain Curtain” nozzles delivering (#6 nozzle) 6.3 gpm, with 46-ft radius operating at 50 psi. Other manufacturers that may be considered: Or approved equal:

Toro’s T5 rotor, Irritrol’s 550R rotor, or Hunter’s I-20 rotor all with standard nozzles.

B. Spray Heads

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1. The spray heads shall be either Toro bodies (#570Z-4P-PRX-COM and #570Z-12P-SI-

PRX) or Rain Bird bodies (#RD-04-S-F-P30 and #RD-12-S-F-P30) with Toro’s

“Precision Series Spray Nozzles” in areas 15 feet and smaller. If used on Rainbird spray bodies, the Toro Precision nozzles must be ordered with female-threads.

2. In areas (designated on plan) where spacings are between 16-28 feet, use Rain Bird rotary nozzles or Toro “Precision Series Rotating Nozzles”, as specified and noted in Legend.

Use on either Rain Bird bodies (#RD-04-S-F-P45 or #RD-12-S-F-P45) or Toro bodies

(#570Z-4P-XF-COM or #570Z-12P-SI-XF). Optimum operating pressure: 45 psi.

C. Bubblers

1. Bubblers shall be used on the inner loop of the new trees along the Processional Walk, as detailed on the drawings.

2. With four bubblers per tree, each shall have an output of 0.25 gpm

3. Basis of Design bubbler (Rain Bird #1401, or approved equal: Toro #FB-25-PC) allows threaded mounting onto ½” MPT plastic shrub adapter while retaining the mandatory filter basket (provided), which threads directly onto 17mm x 17mm barb x ½” MPT drip-tubing fitting.

D. Sprinkler Risers

1. Sprinkler heads (3/4” rotors and sprays) are to be connected to the laterals by poly flex-pipe and associated fittings, either by Rain Bird or Toro/Irritrol.

2. Large turf rotors (1” inlet) are to be connected to laterals by Schedule 40 PVC tee and

Sch 40 PVC 1” swing-joint with three 90-degree swivel-elbows (Lasco or Spears only).

2.9 DRIP IRRIGATION

A. In Tree-Pits along the Processional Walk, as designated on the plans, provide drip-irrigation as described: Continuously self-flushing, pressure-compensating dripline. Provide and install

17mm drip-tubing with inline emitters (inside the tubing), consisting of low-density, linear poly-tubing housing internal pressure compensating, self-flushing, integral drip emitters.

(BoD: Netafim’s Techline-CV #TLCV-06-12 with built-in check-valves; considered equal:

Rain Bird’s #XFCV-06-12). The tubing shall be brown or maroon in color. The emitters should have the ability to independently regulate discharge rates, with an output pressure of between

15-40 psi, at a constant flow. The emitter discharge rate shall be 0.61 gallons per hour, utilizing a combination turbulent flow/reduced pressure cell mechanism and a diaphragm to maintain uniform discharge rates. The emitters shall continuously clean themselves while in operation.

The dripline shall have the 0.6 gph emitters spaced 12” apart, with a 16” spacing between drip laterals (rows), providing a precipitation rate of approximately 0.72 inches per hour.

B. Accessories: The disc-filters, flush-valves (often two: one at each end of center-feed zone) and air-relief valves (at high-points of zone) shall all be manufactured specifically for use with micro-irrigation applications.

2.10 CONTROLLER

A. Central Controller:

1. The Water Management System shall include the following general components:

a. Software

b. Field Satellite

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c. Integrated Radio Communications Hardware that allows hand-held radios to communicate to field controllers, and not rely on the Central

d. Dedicated computer utilizing a Windows 7 Operating System

e. ET-based weather interface that works with onsite wireless weather-station

f. Two year manufacturer national support network

2. Computer with Windows 7 Operating System, monitor, color printer and all peripherals

(per manufacturer's requirements below), installed in Operations & Maintenance

Building, Grounds Supervisor’s office. (Contracting Officer shall confirm location and connectivity to ensure compatibility before ordering).

a. Processor / Motherboard: Intel® Core i3 (3.10 GHz) Biostar BIB75-AHA ATX

System Board; LGA1155 socket 1333 MHz Bus

b. RAM: 4 GB DDR3 – Dual Channel 16GB max

c. Audio: Realtek CODEC ALC892-VC, 5.1 channel (integrated); (Support Blu-ray

Audio)

d. Network Interface: 2 - (1) INTEL 82574 (NIC), (1) INTEL 82579 (PHY).

10/100 Mb/s, 1Gb/s auto negotiation (integrated)

e. Hard Drive: 500 GB

f. Optical Drive: DVD/CD-RW Dual Format LIghtScribe. Supports all formats including: DVD +/- R, DVD +/- RW, CD-R, CD- RW

g. Motherboard Bus Type: (1) PCI-E x 16, (2) PCI-E x1, (1) PCI-E x 4, (3) PCI

h. Video/Graphics: 2 - (1) Integrated VGA, (1) DVI. INTEL HD Graphics integrated.

Supports dual independent displays (Extended mode).

i. Serial (COM) Ports: 6 - (2) Integrated system board COM port, (4) Integrated RS-

232 9-pin Single headers

j. USB Ports: 8 - (2) in front, (6) integrated in back. 2.0

k. 1394 (Firewire) Ports: N/A

l. Case Type: Mid-Tower (5-Bay)

m. Backup Device/Media/Software: 320 GB Removable Hard Disk; 4 GB USB 2.0

Mini Drive; Second Copy (License Only)

n. Operating System: Windows® 7 Ultimate 64 bit

o. Recovery Software: Symantec Ghost

p. Antivirus Software: AVAST Anti-Virus (3 year), (License only)

q. DVD Recorder: Windows Media Player (DVD Player CODEC)

r. CD/DVD Authoring Software: Windows 7 Ultimate 64 bit

s. Speakers: Stereo – on monitor

t. Mouse: Microsoft® Compatible Optical Wheel USB

u. Keyboard: Keytronics USB

v. Monitor: 24” ViewSonic® Wide Screen Flat Panel with speakers

w. Battery Backup: Uninterruptible Power Supply, 700VA Minimum (or equivalent)

x. Printer: Canon PIXMA iP2702 (or equivalent)

y. Accessory kit: Contains one RS-232 in-line surge protection device; one CD Case;

one mouse pad; one USB printer cable; one blank recordable CD, one blank recordable DVD; one computer power cord, and other necessary cables and/or software.

3. Information-Technology Interface: The Irrigation Contractor is responsible for configuration of the computer and software, and bringing it “online”. Coordinate with

Contracting Officer to verify that there is a network drop in Park Manager’s office for the computer. The Irrigation Contractor shall furnish and connect a network cable into a network jack provided by others. Contracting Officer will provide the IP address, which

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determines the network assignment. Contractor shall coordinate with Contracting Officer and the (NPS) in-house IT team for proper network addressing information and procedures.

4. Central Control Components: Contractor shall provide and install a central controller

(Basis of Design: Toro #SGIS-1-T), latest software (WMS 3.0), peripheral hardware, plus

2-years of manufacturer’s support (NSN) that functions 24 hours/day, seven days per week. Required for the central control package is the following:

a. Toro #ESB-CTM-WP1, Communication Termination Module in small plastic wall-mount enclosure & #ESB-SERIAL (Serial cable).

b. Field satellite controller (see paragraph 2.10-B)

c. One (1) Base-station antenna: PCTEL #MYA45012N 450-470 MHz, 12.2 DBD

GAIN, YAGI, N(F), 70 ft. LMR-400 coax cable with N-male Connections on each end, as required. The irrigation contractor will provide and install the antenna, coax cable, junction box (PVC-type: Cantex model #5133713, or equal, at pole base), conduit, connectors, fasteners, and will terminate that cable with 36” relief cable

(Toro #RG58) at the central interface unit, inside the O&M Building. Attachment of mounting bracket and pole (2-3/8” diameter x 8 ft aluminized fence post) to building façade by other trades (see specification Section #270543: Exterior Communications

Pathways). Sentinel shall not have a polyphaser (surge device); this gives a ground reference to the controller and shorts it out. Instead, contractor shall isolate the antenna from a ground reference by providing a sleeve around the mast where the antenna mounts, and then grounding the mast only, not the antenna.

d. Davis Instruments #06162 wireless, solar-powered onsite weather station & software, with Vantage Pro2 console/receiver, and data logger (DI #06510SER). Contractor responsible for providing and installing mounting pole (DI #07717) to mount unit to existing light pole across the parking lot, where shown on plans.

e. FCC license, with 4 frequencies within a range of 450-470 MHz. Contractor is responsible for coordinating with Contracting Officer for required FCC licensing.

(See more detailed information for procedures and confirmation of existing FCC licenses in “Part 3 – Execution” of this section.)

f. Toro #SHHR (two) FCC-licensed hand-held radios with 5-watt radio operating within a range of 450-470 MHz, communicating with integrated (not an add-on feature) UHF radios within field satellite cabinets. The hand-held units shall have 120 selectable and programmable channels, with a transmit range of between 2-3 miles.

5. Other central control manufacturers/products that will be considered are: RainMaster

(Oasis Central Control with DX2 Evolution controllers and solar-powered, wireless weather-station) and CalSense (Command Center with ET2000-E controllers and solar-powered, wireless weather-station), only if those can provide matching equipment with similar performance without modifications.

B. Field Satellite Controllers:

1. Standard (Basis of Design): Toro’s Sentinel ‘Two-Wire’ controller model # ESBTW204-

U2/TDC-PP2-VRA (‘A’: Sentinel Two-wire with UHF radio in sandstone-colored heavy-plastic pedestal cabinet). Controller shall be situated as instructed by Contracting Officer

(in vicinity as shown on plan).The two-wire field satellite controller communicates with the central (through base radio), and has the ability to control up to 204-stations

(decoders) with 16 independent programs and 8 start-times per program. The satellite unit

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shall be compatible with a two-wire communication path leading to decoders that convert power from AC to DC, to activate DC-latching solenoids on the control valves.

2. The field satellite unit (pedestal-mounted) shall have the latest faceplate that the manufacturer produces (Basis of Design: Toro’s Sentinel version 3 faceplate).

3. Contractor shall provide and install two (2) hand-held remote control radios

(BoD: Toro model #SHHR) with the system, for users to communicate remotely with the field satellite unit directly, without being routed through the central. Contractor shall ensure proper two-way communication is established between the controller (‘A’) and the base-station radio antenna (at O&M Bldg.), and the two (2) hand-held remote control radios.

4. The field satellite shall have the ability to activate up to 20 DC-latching solenoids simultaneously (maximum of two solenoids per station on ten different programs, although 16 different programs shall be available).

5. The field satellite shall have a terminal dedicated for a flow-sensor, which will be located within the pump-station. The shielded cable between the controller and the flow-sensor shall be manufactured by Paige Electric (Basis of Design: Paige #P7162D –

Revision 11, shielded underground communication cable; 16 AWG, one pair with drain wire. Cable should be equivalent to AT&T PE-39 or PE-89.) This cable, along with the two-wire communication cable, shall be within a 2” diameter Schedule 40 PVC conduit running between the field satellite and the pump station. This conduit route shall have warning tape placed 12 inches deep, with the conduit 30-36 inches below finished grade.

Flow sensor within pump-station shall be by Data Industrial, and will have optical isolators, which allows the flow data to be shared between the pump station and the controller. The controller will transmit the flow data to the central for redundant storage.

6. The field satellite will utilize a decoder for the master valve. The master valve circuit shall have the ability to be programmed through the software to ‘normally open’ setting.

7. The field satellite shall be a fully intelligent unit with program data stored at both the field satellite and within the central controller. In the event of a computer or central control (software) malfunction, there will be no loss of irrigation data and the controller can still function as normal without the need for the central to be operational.

8. The pedestal-mounted field controller has the ability to have four (4) two-wire communication cables originate from the board. The controller in this Contract will utilize only three (3) of those terminals, sending three separate wire paths into the field.

(See Sheets #I206 and #I301 for communication cable paths).

C. Controller- Valve Communication Circuitry:

1. Communication between controller and the decoders and valves shall be accomplished by a twisted pair of #14 AWG decoder cables for direct burial within a HDPE outer jacket.

The communication cable shall be manufactured by Paige Electric (BoD) model

#P7350D. Decoders (either 1 or 2 station configuration with ability to operate one or two solenoids per station) shall have ‘Integrated Surge Protection’ (#CDEC-ISP-1 or #CDEC-

ISP-2), or additional line-surge protection must be installed at 1000 ft intervals along cable route. Each decoder is pre-addressed with an address, and is not programmable in

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the field. Internal capacitors within the decoders convert AC power to DC power, which then sends DC signals to DC-latching solenoids up to 400 feet through #14 wire DTS cables (model #P7351D). All splices shall be made in accordance with National

Electrical Code® Articles 300.5 (Underground Installations) and 110.14 (Electrical

Connections) using “3M” DBY-6 or DBR-6 connectors, which are UL listed under "UL

486D-Direct Burial", for wet or damp locations, 600 volts. The decoders shall have surge protection rated to 20 KV (20,000 volts) secondary surge.

2. There shall be three (3) two-wire paths originating from Controller ‘A’ (see Sheet #I301)

3. Irrigation contractor shall coordinate irrigation communication cable (and related accessories) crossing the Contract Limit lines with the Contracting Officer and contractor performing the work in adjacent Contract (#1). Coordination-drawings showing depth, location and alignment shall be submitted by both Contractors meeting at the Contract

Limit Line, and the timing of interconnections shall be as determined by the Contracting

Officer.

2.11 PUMP STATION

A. Contractor shall verify existing water pressure at the point-of-connection, which is after the irrigation-only backflow preventer (existing in vault). Report results of pressure-tests to

Contracting Officer, to verify that the anticipated water-pressure matches the pressure used for configuring the BoD (Watertronics) pump-station #P1.

B. The intention of this specification is to describe an automatic pump station for a turf irrigation system. This is to be accomplished by using a completely prefabricated pump station conforming to the following specifications:

1. The Basis of Design (BoD) pumping station shall be WaterMax Model # WM7000 as manufactured by Watertronics, Inc. Other pump-station manufacturers that may be considered as equals, if their specifications and performance match precisely are:

Flowtronex and Rain Bird.

2. The following information must be furnished by the contractor or manufacturer’s representative to the Contracting Officer, for consideration as an equal brand:

a. A complete specification and submittal of all major components for the proposed pump station with individual pump performance verification.

b. A detailed pumping station proposal drawing complete with component location, sizes and dimensions specific to the installation.

c. A complete electrical schematic for all high and low voltage circuits showing breaker/ fuse sizing, wire numbering and color.

d. Pump station manufacturers U.L. file number for the electrical controls and pump station.

e. A copy of the manufacturer’s certificate of insurance.

f. Product support technicians shall be capable of accessing all information pertaining to the pumping equipment, e.g. electrical schematics, pump curves, program data, bill of materials, etc. The manufacturer shall have no less than two technicians on call seven days a week.

g. The pump station manufacturer shall provide factory authorized or factory direct service personnel for the setup, start-up, preventative maintenance and general service of the pump system. A factory authorized or factory direct service technician must be located within one-hundred (100) mile radius of the project site. The pump system’s technician must have a minimum of 5 years of experience. The pump

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station manufacturer shall provide technical phone support twenty-four hours a day, seven days a week.

3. The pump station performance at enclosure limits shall be as noted in the technical specifications. The capacity, discharge pressure, dynamic inlet pressure and intake and discharge pipe dimensions shall be per the technical specifications. The pump shall operate at no more than 3600 RPM. The power supply to the station shall be as noted in the technical specifications.

4. The station shall be completely wired, piped, dynamically flow and pressure tested prior to shipment.

5. Construction shall be of modular form utilizing a steel base structurally adequate to support pumps, piping, and electrical equipment as a single integral assembly. All nuts, bolts washers, and fasteners shall be stainless steel, zinc or cadmium plated for corrosion resistance.

C. Pump shall be electric motor driven, horizontal centrifugal with mechanical shaft seal, volute case and impeller. The shaft seal shall be a self-adjusting mechanical type to prevent leakage and eliminate the need for drain piping. The volute case shall be precision machined from gray cast iron and engineered to modern hydraulic standards. It shall be possible to rotate the discharge connection to any of four positions. A heavy cast iron bracket shall maintain alignment between the motor and volute case. The impeller shall be an enclosed type and balanced to provide smooth operation. The impeller shall be keyed to the shaft and locked with a special cap screw and washer. The motor shaft is to be manufactured from high grade steel and of reduced length to increase shaft rigidity, extend bearing life, and reduce the overall length of the pump and motor assembly. The motor shaft shall be protected with a replaceable stainless steel sleeve. The pump motor and impeller shall be removable from the back of volute case for service without disturbing the plumbing.

D. Pump motor shall be a squirrel cage induction horizontal solid shaft type. The pump impeller shall be direct mounted and keyed to the motor shaft with a stainless steel protective sleeve.

The temperature rise of the motor shall be to NEMA Standard MG-1-12.42 for class B or Class

F insulation. Radial and thrust bearings of ample capacity to accommodate the hydraulic thrust of the pump shall be incorporated into the motor. The motor shall be of proper size to drive the pump at any point on its operation curve without exceeding the motor service factor.

E. Fabricated Piping: All fabricated piping shall conform to ASTM specifications A53 for Grade

B welded or seamless schedule 40 pipe. All welded flanges shall be forged steel, slip-on or weld neck type. All welded fittings shall be seamless, ASTM Specification A234, with pressure rating not less than 150 PSI.

F. Bypass Piping System: A fabricated full flow bypass shall be constructed of ASTM specification A53 Grade B welded or seamless schedule 40 pipe. All welded flanges shall be forged steel, slip-on or weld neck type. All welded fitting shall be seamless, ASTM

Specification A234, with pressure rating not less than 150 PSI. Full flow bypass shall be complete with 3 butterfly isolation valves to allow for complete isolation and bypass of the pump. All valves shall be installed inside the enclosure for vandal resistance.

G. Check Valve: Pump check valve shall be of the silent operating type that begins to close as forward velocity diminishes and be fully closed at zero velocity preventing flow reversal.

Valve bodies shall be cast from ASTM-126C cast-iron or better and shall be free from blow holes, sand holes, and other impurities. The valve design shall incorporate a center guided, spring loaded poppet, guided at opposite ends and having a short linear stroke…