9-25-047 Frank White Sports Complex Planting Irrigation (scope Area 2)..pdf

Frank White Jr. Sports Complex Irrigation Improvements Olsson Project M23-01112 Jackson County, Missouri

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SECTION 328400

PLANTING IRRIGATION (SCOPE AREA #2)

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes furnishing all labor, materials, accessories and equipment, and performing all operations necessary for the complete installation of the non-potable landscape irrigation system, permits and including items listed below:

1. Piping.

2. Manual valves.

3. Automatic control valves.

4. Automatic drain valves.

5. Spray and rotor heads.

6. Driplines

7. Quick couplers.

8. Controller and central control features.

9. Boxes for automatic control valves.

B. Irrigation Control System

1. Prior to bid, Irrigation Contractor to confirm with Owner if central control software is to be included for irrigation system control.

2. The construction shall include one (1) controller to be shown on Irrigation

Contractor design plans.

3. Power shall be provided to the irrigation controller by electrical contractor. Final connection by Irrigation Contractor.

4. If applicable, communication drops to be provided to the Irrigation Controller location. Final connection by Irrigation Contractor.

C. Basis for Design

1. The basis of design for the new Irrigation System shall be as manufactured by

Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be considered if they meet or exceed the general and standard specifications. All equipment and work must comply with Federal, State, and Local codes.

D. All bids should reflect a total “turn-key” installation for the site. This would include all equipment necessary to install satellite controller, central control system (if applicable) including necessary wiring, communications equipment, electrical service, water supply and lines needed to communicate with the central irrigation control system. Each bid shall include all equipment and labor necessary to provide a “turn-key” installation.

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E. Each proposal shall include the cost to install a combination flow meter and master valve.

This meter and valve shall be connected just past the water connection. This meter and valve shall be capable of relaying this information to the central irrigation control system point computer to provide flow information of each valve as it waters. It shall also be capable of detecting any flow that is occurring when no valves are operating, such as a broken main line would create. This flow sensor should then be capable of sending a signal to the central irrigation control system that will then in turn close the master valve.

The bid for each flow meter and valve shall include the meter/valve and any other items needed for a “turn-key” installation. The bid price for this meter and valve shall be shown as a separate bid item for this site.

F. The contractor shall include a proposed schedule, with projected time frame and phasing of work (if applicable), for installing the system with their proposal. It should reflect, in calendar days, the anticipated time required from the day of the award to completion of the system in a fully operational mode. This schedule should reflect anticipated time for ordering and receiving all components, starting and ending times for installation, starting and ending times for training, system start-up, etc.

1.2 PERFORMANCE REQUIREMENTS

A. Irrigation zone control shall be central control system (if applicable) with automatic operation with controller and automatic control valves.

B. Location of Sprinklers and Specialties: Locations per Contractor design plans. Make minor adjustments necessary to avoid plantings and obstructions such as signs and light standards. Maintain 100 percent irrigation coverage of areas indicated.

C. Minimum Working Pressures: The following are minimum pressure requirements for piping, valves, and specialties unless otherwise indicated:

1. Irrigation Main Piping: 120 psi

2. Circuit Piping: 60psi

1.3 SEQUENCING/SCHEDULING

A. Obtain information pertaining to the location of all existing utility lines and equipment prior to irrigation installation.

B. Install sleeves for all mainline, laterals, and wire that cross roadways, drives, sidewalks, and all other paving surfaces prior to placement of paving. It is the responsibility of the Irrigation Contractor to coordinate timing of sleeve installation and construction procedure with Paving Contractor to ensure proper sequencing.

C. Give at least seven (7) days notice to the Landscape Architect or his representative prior to all required site visits as indicated herein.

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1.4 ACTION SUBMITTALS

A. Product Data: For each type of product indicated. Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories.

Only materials and items of equipment so approved shall be used.

B. Wiring Diagrams: For power, signal, and control wiring.

C. Approvals: Submit documentation of all approvals required by local, municipal, and state jurisdictions.

D. Grounding and Line Surge Protection Verification: The Irrigation Contractor is to provide written documentation and verification that each grounding device meets the manufacturer’s specified requirements for grounding and line surge protection. The tests shall be completed using an approved ground resistance tester. The Hunter Field Service Manager (FSM) shall conduct testing.

1.5 INFORMATIONAL SUBMITTALS

A. Controller Timing Schedule: Indicate timing settings for each automatic controller zone.

B. Field quality-control reports.

1.6 CLOSEOUT SUBMITTALS

A. Operational and Maintenance Data: Submit manufacturer's data in a three-ring binder, labeled and indexed

B. Record Drawings: Irrigation Contractor shall record and submit an “As-Built Drawing” which records actual installed conditions. The As-Built Drawing shall be submitted in an electronic format. Irrigation Contractor shall submit the As-Built Drawing to the Landscape Architect before work under this contract will be considered for Acceptance.

1.7 QUALITY ASSURANCE

A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application.

B. Manufacturing Qualifications: Provide landscape irrigation system as a complete unit produced by acceptable manufacturers for all portions of work, including heads, valves, piping, controllers, and accessories.

C. Installer qualification: Contractor shall be a firm specializing in irrigation work with a minimum of 10 years’ experience in work of this type. The irrigation contractor shall provide written proof of attendance at a manufacture’s supported training program regarding the installation, programming and troubleshooting for a Hunter two-wire decoder-based irrigation control system. These qualifications must be present prior to any work beginning on this project.

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D. Support Network requirements: Contractor shall have Hunter Support Network (HSN) Field Service Manager (FSM) provide commissioning of irrigation control system including verification of specified Hunter components, correct wire and connectors, and grounding of required component has been set up with proper start-up and initial programming.

E. Referenced Standards: American Society for Testing and Materials, Annual Book of ASTM Standards, latest edition.

F. Codes and Standards: Irrigation installation shall comply with all applicable federal, state and local governing agency requirements and to industry standards. Notify Landscape Architect immediately in writing of any discrepancies, inconsistencies, or contradictory requirements.

G. Workmanship: Install materials and equipment in a neat and professional manner following manufacturer's recommendations.

1.8 FEES AND PERMITS

A. Work under this Section shall include all fees, permits, licenses, and required inspections by concerned governing agencies.

1.9 DELIVERY, STORAGE AND HANDLING

A. Deliver materials and equipment in such a manner as not to damage the parts or decrease the useful life of equipment.

B. Store materials away from detrimental elements. Coordinate with Owner’s Representative, General Contractor, or Landscape Contractor, as appropriate, to secure a safe staging area.

C. Handle, load, unload, stack, and transport materials carefully to avoid damage. Handle pipe in accordance with manufacturer's recommendations.

1.10 JOB CONDITIONS

A. Prior to commencing any work required under the Contract, the Contractor shall locate all utilities, subsurface drainage, and underground construction so that proper precautions may be taken not to disturb or damage any subsurface improvements.

Damage to any of the above-mentioned items or other shall be promptly repaired by the contractor at no additional cost to the owner.

B. Non-Potable water service from Fred Arbanas Golf Course supply and electric service will be supplied by the Irrigation Contractor for the purpose of the automatic irrigation system.

C. Irrigation System is to operate under the water pressure and flow rates as provided by Fred Arbanas Golf Course irrigation main line. Irrigation Contractor shall be responsible for determining these parameters, and shall design the irrigation system in accordance with the existing or anticipated conditions.

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D. Insurance on irrigation materials or equipment stored or installed is the responsibility of the Irrigation Contractor. Such insurance shall cover fire, theft, and vandalism. Should the Irrigation Contractor elect not to provide such insurance the Owner shall in no way be responsible for any losses incurred by the aforementioned acts. The Irrigation Contractor is responsible for all costs incurred in replacing damaged or stolen materials or equipment prior to Substantial Completion of the Work.

E. Obtain all required permits and pay all required fees at no additional cost to the Owner.

Any penalties imposed due to failure to obtain permits or pay fees are the responsibility of the Irrigation Contractor.

F. Provide and maintain all passageways, guard fences, warning lights, and other protection devices required by local authorities or others having jurisdiction.

G. Irrigation Contractor shall adequately protect adjacent property as provided by law and the Contract Documents.

H. Existing Site Improvements: Perform Work in a manner that avoids damage to existing site improvements. The Irrigation Contractor is responsible for any damage of mechanical nature as well as damage resulting from leaks in the irrigation system whether due to negligence or otherwise.

I. Test water conditions: Irrigation System is to operate under the water pressure and flow indicated on the irrigation plan. It shall be the responsibility of the Irrigation Contractor to measure or analyze the existing or anticipated water supply at the tap.

1.11 WARRANTY AND SUBSTANTIAL COMPLETION

A. Substantial Completion

1. At the completion of the installation of the irrigation system components, and at the direction of the Owner, the Owner’s Representative or Landscape Architect shall observe the conditions of the project for the purpose of verifying compliance with plans, details and specifications. A written report will be provided to the Owner listing any deviations or omissions. These issues will be resolved and verified by the Landscape Architect prior to the issuance of a Letter of Substantial Completion.

2. Contractor shall provide Landscape Architect with written notification from Hunter FSM stating that all installation, testing and training of the irrigation control system has been completed and approved. Notification shall be received prior to substantial completion.

B. All irrigation equipment including controller, control valves, sprinklers, rotors, and accessories shall have a five (5) year manufacturer’s warranty. All other irrigation equipment, workmanship, and, supplies shall be warranted for one (1) year from date of issuance of the letter of substantial completion. All warranties shall be turned over to the Owner.

1.12 TRAINING

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A. A minimum of 2 hours of training, as determined by Hunter Support Network (HSM Field Service Manager (FSM), (or approved equal) for up to two (2) users determined by Owner or Owner’s Representative shall be conducted by the FSM on-site, with installed system, after completion of project. The contractor is to schedule, coordinate, and attend the training session. Training shall include an overview of system operations as well as detailed one-on-one training for selected individuals for hardware operation.

B. The control system manufacturer is to provide toll-free phone-in support to the Owner at no cost for a period of one (1) year within the initial purchase price of the system.

PART 2 - PRODUCTS

2.1 GENERAL

A. Specific requirements concerning the various materials and the arrangements in which they are to be installed are outlined in this Specification.

B. Quality and Size

1. Material specified by name and / or model number in the Specifications, on the site, or detailed drawings are used for the purpose of identification of materials and to ensure specific use of that material in the construction of the system. No substitutions will be permitted without approval.

2. All materials used in the system must be new and without flaws or defects of any type and be the best quality available.

2.2 ACCEPTABLE MANUFACTURERS

A. The basis of design for the new Irrigation System shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be considered if they meet or exceed the general and standard specifications. All equipment and work must comply with Federal, State, and Local codes.

B. Manufacturer: Contractor materials shall comply with all requirements and provide irrigation equipment products from only the following:

1. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products not listed within this section may be incorporated into the Work.

2. Irrigation non-potable equipment including spray heads, rotors, nozzles, control valves, quick couplers, master valves, irrigation controller, rain sensors, low volume irrigation equipment, drip tubing and drip fittings including pressure regulators, filters, air relief valves, pipe fittings including swing assemblies, swing joints, barbed fittings, swing pipe and compression fittings shall be manufactured by Hunter Irrigation Systems.

a. Or approved equal

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3. Decoder based irrigation control system equipment including field decoders, line surge protection devices, sensor decoders and field transmitters shall be manufactured by the Hunter Irrigation Systems.

a. Or approved equal

4. Centralus Central Irrigation Control System equipment, software, modules, and system hardware interface shall be manufactured by the Hunter Irrigation Systems.

a. Or approved equal

5. Decoder control wire shall be manufactured by Hunter Irrigation Systems.

a. Or approved equal

6. Wire connectors shall be manufactured by 3M Corporation.

a. Or approved equal

2.3 DELIVERY, STORAGE AND HANDLING

A. Manufactured materials shall be delivered in original containers with brand and maker's names marked thereon. Materials in broken containers or showing evidence of damage will be rejected and must be immediately removed from the work.

B. Store plastic pipe on flat pallets and protect from sunlight.

2.4 PIPES, TUBES, AND FITTINGS

A. Main Irrigation supply line and circuit pipe for non-potable water. High Density Polyethylene (HDPE) pipe ASTM D3350

1. Pipe shall be made of HDPE material with a minimum material designation code of PE4710 and with a minimum Cell Classification of 445474C. The polyethylene compound shall be suitably protected against degradation by ultraviolet light by means of carbon black of not less than two (2) percent. The manufacturer of the HDPE resin shall certify the cell classification indicated.

2. Pipe sizes 3” and larger shall have a manufacturing standard of ASTM F714, while pipe smaller than 3” shall be manufactured to the dimensional requirements listed in ASTM D3035. Dimension Ratio (DR) and Outside Diameter (IPS/DIPS) shall be as specified in the irrigation design plans to be developed by irrigation contractor.

3. Pipe shall meet AWWA C901 (1/2” to 3”) or AWWA C906 (4” and greater), and shall be listed as meeting NSF-61.

4. When required by the Owner, pipe shall be color coded for the intended service.

The color coding shall be permanently co-extruded stripes on the pipe outside surface as part of the pipe’s manufacturing process. Color coding shall be as follows:

a. Reclaimed water – purple

B. All pipe that is exposed or not below grade shall be Schedule 80 PVC or Seamless Copper Pipe: ASTM B88, Type M, drawn temper.

C. Sleeving Pipe for Potable Water Irrigation Supply Line: PVC plastic pipe, Schedule 40, ASTM D 1785 and D 1784, PS 21-70.

D. HDPE Fittings:

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1. Butt Fusion Fittings- Fittings shall be made of HDPE material with a minimum material designation code of PE4710 and with a minimum Cell Classification as noted in 2.01.A. Fittings shall have a minimum pressure rating equal to or greater than the pipe to which they are joined unless otherwise specified on the plans or accepted by owner/engineer. All fittings shall meet the requirements of AWWA C901 or C906.

a. Molded fittings shall comply with the requirements of ASTM D3261.

b. All fabricated elbows, tees, reducing tees and end caps shall be produced and meet the requirements of ASTM F2206, as manufactured by ISCO Industries, Inc or other approved manufacturer holding an ISO 9001 quality system certificate. Each fitting will be marked per ASTM F2206 section 10 including the nominal size and fitting EDR, which will meet or exceed the pipe DR identified for the project. Fabricated fittings shall be manufactured using a McElroy DataLogger to record fusion pressure and temperature and shall be stamped with unique joint number that corresponds to the joint report. A graphic representation of the temperature and pressure data for all fusion joints made producing fittings shall be maintained for a minimum of 5 years as part of the quality control and will be available upon request of owner. Test results to validate ASTM F2206 section 7.3 and 9 shall be provided to owner or owner’s representative upon request.

c. Socket fittings shall meet ASTM D2683.

2. Electrofusion Fittings - Fittings shall be made of HDPE material with a minimum material designation code of PE 4710 and with a minimum Cell Classification as noted in 2.01.A. Electrofusion Fittings shall have a manufacturing standard of ASTM F1055. Fittings shall have a minimum pressure rating equal to or greater than the pipe to which they are joined unless otherwise specified on the plans. For potable water systems, all electrofusion fittings shall have AWWA approval.

3. Bolted Connections - Flanges and MJ Adapters shall be fused onto the pipe and have a minimum pressure rating equal to or greater than the pipe unless otherwise specified on the plans.

a. Metallic back-up rings (Van-Stone style lap joint flanges) shall have a radius on the inside diameter of the bore to be compatible with HDPE Flanges. Back up rings shall have bolt pattern that will mate with AWWA C207 Class D (generically known as 150-pound patterns).

b. Flange assemblies shall be assembled and torqued according to PPI TN-38, “Bolt Torque for Polyethylene Flanged Joints.”

c. 4" and larger transitions to mechanical joint fittings and valves shall be accomplished using a MJ Adapter with kit. The D.I./HDPE mechanical joint adapter shall consist of an HDPE mechanical joint transition fitting, rubber gasket, a mechanical joint backup drive ring, and Corten mechanical joint tee bolts.

E. HDPE Saddles

1. Riser/branch/swing connections shall be electrofusion saddles, sidewall fusion saddles, tapping tees or mechanical saddles.

2. Refer to fittings specification for additional requirements for each fitting type.

3. Sidewall fusion saddles can be made in accordance with ASTM D3261 or ASTM

F2206.

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4. Tapping tees shall be made in accordance with ASTM D3261 or D2683 and MSS

SP-60.

F. HDPE Ball Valves

1. Valves shall meet ASME b16.40, EN12201-4 and NSF 61.

2. Valve ends shall meet dimensional requirements of ASTM D3035 & AWWA C901

(Sizes through 3”), ASTM F710 & AWWA C906 for sizes 4” and larger.

3. Each valve shall be labeled in accordance with ASTM F2897 for material tracking and traceability.

4. Valves shall be all-plastic construction with outlet and shell made of PE4710

HDPE.

5. All valve soft seals shall be constructed from Viton Flouroelastomer.

6. Valve obturators shall be quarter-turn operation.

G. Metallic: Cast bronze with standard iron pipe thread; 125 bl. class rating in conformance with ANSI B16.15.

1. Copper: ANSI B16.22 wrought copper or cast brass, recessed solder joint type fittings.

H. Pipeline locating materials

1. Tracer Wire – All HDPE pipe 4” and greater shall be installed with an extra high-strength, copper clad steel tracer wire including 45 mil HDPE jacket that has a minimum average break load of at least 1,150 lbs. This wire shall be continuous and brought up in the valve boxes at the ends of each line segment with splices made only by methods per the manufacturer’s recommendations. All splicing components shall be furnished and installed by the Contractor.

2.5 THRUST BLOCKS

A. All changes in pipe direction must be thrust blocked according to manufacturer's recommendations and specifications.

2.6 IRRIGATION CONTROL SYSTEM SLEEVING

A. Install separate sleeve beneath paved areas to route each run of wiring. Any existing sleeving is not to be used without the consent of the Owner’s Representative.

B. Sleeving material beneath pedestrian pavements shall be PVC Class 200 pipe with solvent welded joints.

C. Sleeving beneath drives and streets shall be PVC Schedule 40 pipe with solvent welded joints.

D. Sleeving diameter shall be equal to twice the diameter of the wiring bundle.

2.7 VALVES

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A. Manufacturer's Standard, of type and size required, and as follows:

B. Furnish valves with plastic bodies, glass filled nylon or red brass, unless otherwise indicated.

C. Pressure Reducing Valve: If required, standard capacity water pressure reducing valve with integral strainer, Watts U5 series or equal.

D. Master Valve.

1. The basis of design for the new Irrigation System “Master Valve” shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be considered if they meet or exceed the general and standard specifications. All equipment and work must comply with Federal, State, and Local codes.

2. The valve shall be a normally closed, electronically-actuated, diaphragm-operated, remote-control valve.

3. The valve shall be available in a globe body style with 1-, 1-1/2-, 2- or 3-inch Female National Pipe Thread (FNPT) inlet and outlet. When specified, the valve shall be configured with British Standard Pipe threads. The valve shall be equipped with a flow control mechanism with removable handle that will regulate flow from full on to completely off. When specified for use with reclaimed water, a reclaimed water identifier handle shall be available.

4. The body and bonnet shall be constructed of solid brass rated to 220 PSI (15 bars, 1500 kPa). The bonnet bolts shall be serviceable with a slotted screwdriver, Phillips screwdriver, or a hex wrench, and shall be held captive in the bonnet when the bonnet is removed from the valve body. The diaphragm assembly shall be of molded construction, reinforced with nylon fabric and have a thermoplastic elastomer seating material. The valve shall be equipped with an internal filter as well as a self-cleaning metering rod, so only clean water can enter the solenoid chamber. A filter cleaning system that cleans a stainless steel filter each time the valve opens and closes, shall be standard. All metal parts internal to the valve shall be manufactured from corrosion-resistant stainless steel.

5. The valve shall be available with an optional adjustable pressure regulating device with a calibrated dial for setting of the outlet pressure. (The regulator shall be capable of adjusting the outlet pressure from between 20 and 100 PSI (1.4 to 7.0 bars; 138 to 689 kPa) when inlet pressure is 15 PSI (1.0 bars; 103 kPa) or greater than regulated outlet pressure.) The regulated downstream pressure shall remain constant regardless of variations in upstream pressure. The regulation shall be maintained when valve is manually operated with use of internal bleed valve.

6. The valve shall be sized to meet flow requirements shown on design plans to be developed by Irrigation Contractor.

a. Non-potable irrigation system: Hunter IBV Series 3” valve

E. Zone Control Valves for non-potable irrigation system.

1. The basis of design for the new Irrigation System “Zone Control Valves” shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be

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2. Remote control valve shall be normally closed, electronically-actuated, diaphragm-operated, remote-control valve for operation of residential and commercial irrigation systems with flow control and bleeder pin. Includes internal filter with self-cleaning metering rod and both AC and DC power solenoids.

3. Valve inlet and outlet to be Female National Pipe Threads (FNPT). The body shall be molded of non-corrodible, glass-reinforced nylon rated to 220 PSI (15 bars, 1500 kPa). The body shall have brass inserts, with through-holes, to accept bonnet bolts. Bonnet bolts shall be held captive in bonnet.

4. Diaphragm assembly shall be molded construction, reinforced nylon fabric and thermoplastic elastomer seating material. Reclaimed water conditions shall have a diaphragm constructed of a higher grade of EPDM rubber with greater chlorine resistance.

5. Solenoid shall be an encapsulated, one-piece unit with captive plunger.

6. Filter and metering rod shall be manufactured from corrosion-resistant stainless steel.

7. Valve shall be capable of operating between 20 and 220 PSI (1.5 to 15.0 bar; 150 to 1500 kPa) and shall be capable of operating with a flow range between 0.1 to 300 GPM (0.06 to 68m3/hr;0.4 to 1135l/m). Pressure loss shall be 10.1 PSI (0.6 bars; 60 kPa) maximum at 300 GPM (68 m3/hr; 1135 l/m)

8. Solenoid shall be 24 VAC unit with a 350 mA inrush current and 190 mA holding current at 60 cycles and a 370 mA inrush current and 210 mA holding current at 50 cycles. DC latching solenoid available.

9. Valve shall be available with adjustable pressure regulating device with calibrated dial for setting of the outlet pressure.

a. Regulator shall be capable of adjusting the outlet pressure from between 20 and 100 PSI (1.4 to 7.0 bars; 138 to 689 kPa) when inlet pressure is 15 PSI (1.0 bars; 103 kPa) or greater than regulated outlet pressure.

b. Regulator shall be capable of regulating upstream pressures from 35 psi to 220 psi.

10. Valve shall be serviceable through captive bolts held in the bonnet.

11. The valves shall be sized to meet flow requirements shown on plans.

a. Non-potable irrigation system: Hunter ICV series valves.

F. Drip Zone Control Valve.

1. The basis of design for the new Irrigation System “Drip Zone Control Valve” shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be considered if they meet or exceed the general and standard specifications. All equipment and work must comply with Federal, State, and Local codes.

2. Preassembled Zone Control Valve Assembly designed specifically for drip irrigation applications.

3. Valve shall be normally closed 24 VAC 50/60 cycle solenoid actuated with a pressure rating of not less than 120 psi.

4. Valve shall fit Hunter Multi-Purpose Box, have 40 psi pressure regulation and 150 mesh (100 microns) stainless steel screen.

5. The valves shall be sized to meet flow requirements shown on plans.

a. Non-potable irrigation system: Hunter ICZ series low-flow valves.

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G. Pressure Regulating Module for regulating outlet pressure at control valve from 20 – 100 psi.

1. The basis of design for the new Irrigation System “Pressure Regulating Module” shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be considered if they meet or exceed the general and standard specifications. All equipment and work must comply with Federal, State, and Local codes.

2. The Pressure Regulating Module shall be Hunter Accu-Sync-Adj.

H. Quick Coupling Valve: Brass, Single piece construction, one-inch female iron pipe size connection; vinyl covered brass hinged locking cover.

1. The basis of design for the new Irrigation System “Quick Coupling Valve” shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be considered if they meet or exceed the general and standard specifications. All equipment and work must comply with Federal, State, and Local codes.

a. Non-potable irrigation system: Purple cap Hunter HQ-44-LRC-R

I. Manual Gate Valves (Isolation Valves): Non-rising stem, 125 lbs. brass body and parts with wedge disc filled for key operation, as supplied by Crane or equal.

J. Pressure Relief Valves: As manufactured by Waterman, or equal.

K. Valve Box Cover and Frame:

1. Manufacturers:

a. Hunter MB Series, manufactured by Hunter Industries

b. Rain Bird VB Series, manufactured by Rain Bird Corporation

c. Ametek plastic valve boxes, manufactured by Plymouth Products

d. or equal.

2. Non-potable water irrigation system:

a. Turf Areas: Purple Cover

b. Landscape Beds: Purple Cover

3. Sizes:

a. 10” Round

b. 12” Standard

L. Drainage Pit Backfill: Cleaned gravel or crushed stone, graded from 2" maximum to 3/4" minimum. AB3 or equivalent is not acceptable backfill material.

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2.8 AUTOMATIC DRAIN VALVES

A. Description: Spring-loaded-ball type of corrosion-resistant construction and designed to open for drainage if line pressure drops below 2-1/2 to 3 psig.

2.9 TURF ROTORS

A. The basis of design for the new Irrigation System “Turf Rotors” shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be considered if they meet or exceed the general and standard specifications. All equipment and work must comply with Federal, State, and Local codes.

B. Manufacturer’s standard unit to provide uniform coverage over entire area of spray shown on irrigation contractor’s design drawings at designated water pressure.

1. The sprinkler shall be of the gear-driven, rotary type available with six (6) color-coded nozzles discharging 7.0 GPM to 28.2 GPM. The sprinkler shall have radius adjustment capabilities by means of a stainless-steel nozzle retainer/radius adjustment screw.

2. The sprinkler shall be both full-circle and adjustable part-circle operation in a single unit. The sprinkler shall be minutely adjustable from 50° to 360°. It shall be adjustable in all phases of installation (i.e., before installation, after installation while static, and after installation while in operation). The sprinkler shall be equipped with a self-adjusting stator to ensure constant rotation speed regardless of nozzle installed.

3. The sprinkler shall have a non-strippable drive mechanism that allows the nozzle turret to be turned during operation, without damage. It shall also have an automatic arc return feature that returns the nozzle turret to its proper orientation if it is turned outside its intended arc of coverage.

4. The sprinkler shall be equipped with a drain check valve to prevent low head drainage, and be capable of checking up to 15 feet in elevation change. The sprinkler shall have a minimum of 6-inch pop-up stroke to bring the rotating nozzle turret into a clean environment. The sprinkler shall have a rubber cover firmly attached to the top of the riser. When specified, the sprinkler shall have a cover molded of purple Alcryn rubber to indicate the use of reclaimed water. The rubber cover shall be surrounded by a protective rubber boot when sprinkler is in the retracted position.

5. The sprinkler shall have an exposed surface diameter after installation of 2 inches (5 cm) and have an overall height of 7-7/8 inches (20 cm). The unit shall have a 1-inch Female National Pipe Thread (FNPT) inlet.

6. The sprinkler shall be serviceable after installation by unscrewing the body cap, removing the riser assembly, and extracting the inlet filter screen.

a. Prior to bid, irrigation contractor to confirm with Owner or Owner’s

Representative if turf-cup kits to be included for all rotors.

7. The body of the sprinkler shall be constructed of corrosion resistant, impact resistant, heavy-duty A.B.S. It shall have a stainless-steel spring for positive retraction of the riser when irrigation is complete. The riser and nozzle-turret

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8. Reclaimed water 6” Pop-up gear driven turf rotor at outfields: Hunter I-40 series installed using Hunter SJ series swing joints.

a. Or approved equal.

2.10 LANDSCAPE DRIPLINE

A. The basis of design for the new Irrigation System “Landscape Dripline” shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be considered if they meet or exceed the general and standard specifications. All equipment and work must comply with Federal, State, and Local codes.

B. Flexible In-Line Drip Tubing

1. Polyethylene tubing with factory installed pressure compensating emitters with a spacing and consistent flow as determined by Irrigation Contractor provided design plans.

2. All drip tube to be staked in place using 12-gauge galvanized steel staples at 24”-

36” OC.

3. Hunter ECO-INDICATOR shall be used for indicating drip zone operation.

a. One (1) indicator shall be installed per each drip zone.

4. Hunter PLD LOC fittings shall be used to connecting all drip tubing.

5. In-line drip tubing shall be Hunter Landscape Dripline.

a. Non-potable water irrigation system HDL-R in planting beds

2.11 AUTOMATIC CONTROL SYSTEM

A. The basis of design for the new Irrigation System “Automatic Control System” shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be considered if they meet or exceed the general and standard specifications. All equipment and work must comply with Federal, State, and Local codes.

B. The irrigation controller shall be a Hunter ACC2-Decoder controller.

1. The controller shall be housed in a wall-mountable, powder-coated 16-gauge G90 galvanized steel with approximately 5 mil coating. The enclosure shall be lockable and suitable for either indoor or outdoor installation. The controller shall be capable of supporting up to 75 stations and shall have a maximum capacity of up to 225 stations. The controller shall interface with ICD-SEN for weather sensors and flow sensors. Surge suppression and grounding should follow the manufacturer’s recommendation. The controller shall have 32 automatic programs with 10 start times each. The controller shall include 2-wire diagnostic tools for diagnosis of field

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2. The controller shall support up to six independently managed flow sensors. The controller shall support up to six flow zones.

3. Controller shall allow flow budgeting at flow zone and mainline levels to monitor total monthly water usage and provide an alarm when the budgeted amount is exceeded.

4. Flow management shall allow the controller to schedule simultaneous stations on within each flow zone, based on their flow characteristics, to reach a user programmable rate of flow for the duration of the water window.

a. Station flows may be “learned” via flow sensor or entered manually by the user.

b. Individual stations may be prioritized to insure they water earliest in flow management scenarios.

c. Flow zone assignments shall be by individual station, so that multiple programs may operate their stations in a flow managed state within a given flow zone.

5. The controller shall be compatible with the Centralus Central Control System and capable of providing remote computer control of the controller via a variety of communication options (Direct Connect Cable, Phone, GPRS/Cellular, Ethernet, WiFi, and Radio.

6. Shall have the dimensions of:

a. Width: 15.7 in. (40 cm)

b. Height: 15.7 in. (40 cm)

c. Depth: 6.8 in. (18 cm)

C. Modules:

1. Station Module Hunter A2C-D75: If required per Irrigation Contractor design plans, one (1) 75-station modules shall be provided increasing capacity of controller to 125 zones.

2.12 FIELD DECODERS

A. The basis of design for the new Irrigation System “Field Decoders” shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be considered if they meet or exceed the general and standard specifications. All equipment and work must comply with Federal, State, and Local codes.

B. Field decoders shall be Hunter ICD-100, ICD-200, ICD-400, ICD-600, and ICD-SEN

1. Capable of controlling one, two, four or six valves per unit and have integrated surge protection. The decoders shall be sealed in such a manner that they are not susceptible to moisture or inclement weather and can be buried underground.

Decoders shall be installed in valve boxes adjacent to valve with DECSTAKE10 universal decoder stakes.

2. Decoders to be IP68 (fully submersible and field programmable.

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3. Maximum wire runs per manufacturer’s specifications.

2.13 ELECTRIC WIRING

A. 120 Volt AC Wiring: 120-volt service to controller shall consist of three wires: one black, one white, and one ground. Electrical service is to be provided by the General Contractor unless otherwise directed by Owner’s Representative.

B. Provide junction box, flush-mounted and gasketed per code as required.

C. 2-Wire Control Wiring shall be dual core, tin-coated, double insulated special irrigation control wire. Minimum wire size shall be fourteen (14) gauge. Wire to be Maxi-cable as manufactured by Rain Bird® Corporation, Azusa, California or approved equal.

D. Splices in controller wiring shall be waterproof direct bury application. Use Rain Bird- DBY T or R wire connectors. No substitutions will be allowed.

2.14 CENTRAL IRRIGATION CONTROL DEVICES

A. Central Irrigation Control System Software (CICS)

1. Contractor shall confirm if CICS is to be included in irrigation system design. If approved by Owner, the central irrigation control system shall consist of a Hunter CentralusTM.

2. A computer and/or mobile device will be provided by the Owner that will be utilized as the central irrigation control system. The contractor will install the most current version of Hunter Centralus™ onto the computer and/or mobile device.

a. Irrigation Contractor shall verify owner’s computer and/or mobile device is compatible with Hunter CentralusTM software.

3. Data Communication Capabilities

a. Irrigation controller(s) shall be connected to the internet and central control software via 2.4 GHz Wi-Fi, Ethernet (LAN), or 4G LTE cellular communications.

1) Wi-Fi connections shall conform to 802.11 b/g/n standards with all necessary approvals and compliance for 2.4 GHz wireless devices and shall include an approved antenna.

2) Ethernet connections shall be standard RJ-45 hardwired jack to the network via approved cable (CAT 5, CAT 5e, CAT 6, or equal).

3) Cellular connections shall be made through a compatible cellular data carrier as appropriate in the host country and shall include an approved antenna.

a) Connections shall be via 4G/LTE with a compatible data plan.

4) Communications modules shall be installed internally or attached to the host controller.

a) Communication modules shall be of robust construction designed for outdoor use, when installed properly within the controller cabinet.

b) All communication modules shall indicate status of communications with the local router, network, and central control software.

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4. Compatible Controllers

a. The irrigation controllers shall be supplied by the same manufacturer of the central control software and warrantied for use together as a complete system.

b. The controllers shall be commercial-grade irrigation products suitable for outdoor or indoor use, with all necessary approvals.

c. The controller manufacturer shall offer a range of models that are suitable for different applications, including economical controllers with up to 54-station capacity, and heavy-duty controllers with up to 225-station capacity.

d. The controllers shall include water-saving features such as cycle and soak, delay between stations, rain sensor inputs with automatic shutdown, and manual or automated Seasonal Adjustment.

1) Advanced ACC2 Controllers shall also include built-in flow monitoring ability with multiple master valves to monitor up to 6 flow zones.

e. The controllers must also be compatible with a local, license-free remote control that is independent of internet connectivity, Hunter Industries models ROAM and ROAM-XL.

f. The Ethernet (LAN) communication module for heavy-duty ACC2 Controllers shall be Hunter Industries model A2C-LAN.

5. Function Specification – Software

a. The Centralus Irrigation Management Platform from Hunter Industries shall consist of cloud-based control software capable of remote monitoring and management of compatible Hunter residential and commercial irrigation controllers via Wi-Fi, Ethernet (LAN), or 4G LTE cellular connections.

b. The central control software shall be accessible via internet browser and display the activity of all managed controllers in list and/or map overviews.

c. All controllers shall be visible on a live, online map and located automatically based on the user-supplied controller addresses.

1) The map shall be selectable between street, satellite, or terrain views.

2) The map shall automatically size to the extents of the controller locations to show all controllers, and users may zoom, pan, and navigate freely throughout the map for controller selection purposes.

d. The central control software shall permit selection of any controller, and then offer full remote programming of all controller features in the browser, including irrigation scheduling, controller settings, and weather-based watering adjustments.

e. The central control software shall allow the user full remote-control capabilities, including starting and stopping individual stations and programs, or setting the controller to Off for a user-defined number of days. The system shall also allow quick adjustment of irrigation amounts by a percentage value.

f. The central control software shall be compatible with locally installed smart weather adjustment sensors, which can adjust each controller’s irrigation schedule automatically based on local climate conditions. The software shall also report controller shutdowns due to active rain, freeze, soil moisture, or other sensors.

g. The central control software shall display the forecast weather for each controller several days in advance and shall enable automatic shutdowns of irrigation when the forecast temperature or chance of rainfall exceed a user-specified threshold.

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h. The central control software shall have multi-user permissions for maintenance organizations, where each controller shall have a designated owner who may then grant control access for specified controllers to other authorized personnel by email address.

1) Both crewmembers and controllers may be organized into named groups.

2) Access may be granted or canceled at any time (by individual or group) by the designated owner.

i. The central control software shall automatically alert owners and/or designated crewmembers via SMS text messages when selected alarms occur at a controller location, indicating the controller and the type of alarm for rapid response or repair.

j. The central control software shall detect any settings or scheduling conflict between the software and the controller hardware and shall alert the user if a conflict is detected. The software shall have the ability to identify and display any conflicts and allow the user to decide which settings shall be used.

k. The central control software shall use transport layer security to ensure secure IoT (Internet of Things) communication.

1) The central control software users shall also be protected by a well-designed application layer security model that protects the settings and communication of each of user.

2) The central control software shall be protected by network layer security designed to minimize the potential attack surface.

3) The central control software shall be a cloud-based system, not an enterprise system, and does not have or recognize enterprise security.

2.15 SURGE PROTECTION FOR THE TWO-WIRE PATH

A. The basis of design for the new Irrigation System “Surge Protection for the Two-Wire Path” shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County. It is the intent of the County to encourage diversity and competition in the bid responses, and other manufacturers will be considered if they meet or exceed the general and standard specifications. All equipment and work must comply with Federal, State, and Local codes.

B. Contractor shall install controller and inline surge protection at locations and intervals along the wire path per Hunter Irrigation Systems minimum recommendations and specifications based on irrigation system design plans.

2.16 GROUNDING

A. Controller, decoders and ancillary products used on a two-wire path shall be connected to a grounding system with a ground resistance of ten (10) ohms or less.

2.17 FLOW SENSOR

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A. The basis of design for the new Irrigation System “Flow Sensor” shall be as manufactured by Hunter Irrigation Systems as specified herein. These standards and specifications shall be considered the minimum level of design and performance expected by the County.