ࡱ> _ Sbjbjzyzy B6b6b3{& & & & & : : : 8r L : *k!!:!!!"""jjjjjjj$loHj& '$""'$'$j& & !!j%*%*%*'$& !& !j%*'$j%*%*bM\h!E$vQbVjj0*kbp%php& h"0#"%*)#E#"""jj'n"""*k'$'$'$'$p"""""""""B : section 32 80 00 IRRIGATION SYSTEMs GENERAL RELATED DOCUMENTS Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. summary Section Includes: Heads Valves, and valve boxes Control wire splice boxes Control wiring Electric controller Piping circuits, and accessories, including electric power source coordination and installation. REFERENCES Reference Standards Applicable to this Section: ASTM: American Society for Testing and Materials B88: Specifications for Seamless Copper water tube. D 1785: Specifications for Poly Vinyl Chloride (PVC) Plastic Pipe, Schedules 40, 80, and 120. D 2241: Specification for Poly Vinyl Chloride (PVC) Pressure-Rated Pipe (SDR Series) D 2564: Specification for Solvent Cements for Poly Vinyl Chloride (PVC) Plastic Pipe and Fittings F 690: Practice for Underground Installation of Thermoplastic Pressure Piping Irrigation Systems AWWA: American Water Works Association C 500: Gate Valves, 3 inches through 48 inches NPS, for Water and Sewage Systems C 506: Backflow Prevention Devices, Reduced Pressure Principle and Double Check Valve Types ICC: International Code Council IBC: International Building Code IPC: International Plumbing Code NEMA: National Electrical Manufacturer's Assoc. 250: Enclosures for Electrical Equipment (1000 Volts Maximum) NFPA: National Fire Protection Association NFPA 70 (NEC): National Electric Code NSF: National Sanitation Foundation No. 14 - Plastic Piping System Components and Related Materials Chapter 344 Texas Water Code-Regulations governing irrigation Chapter 37 Texas Water Code- Regulations governing irrigation licensing Chapter 1903 Texas Water Code Regulations governing irrigation licensing. extra materials Refer to Section 01 78 46 for Maintenance Material Requirements. DEFINITIONS Irrigation Main - Irrigation main is the piping from the water source(s) to control valves. Irrigation main is that pipe which is on the pressure side of irrigation control valves. This definition shall include looped mains and sub-looped mains. Irrigation Lateral Lines - Irrigation lateral line is the piping from the control valves to the irrigation heads. Lateral line is that pipe which is on the non-pressure side of irrigation control valves. QUALITY ASSURANCE Installation of Irrigation System shall be performed under the direction and supervision of a currently licensed State of Texas Irrigator with not less than 5 years of direct design and installation experience in this type of work. PERFORMANCE REQUIREMENTS DELEGATED DESIGN Provide complete Irrigation System including but not limited to: heads, valves, valve boxes, control wire splice boxes, control wiring, electric controller, piping circuits, and all accessories, including electric power source coordination and installation. Scale design to a 1:20 scale and sealed by either a Texas Licensed Irrigator or a Landscape Architect currently licensed in the State of Texas. Provide design to MD Anderson, Grounds & Landscape Department. (For clarity purposes the term Grounds and Landscape Department shall be used to indicate the Owner.) Provide design on paper following generally accepted industry standards utilizing a title block, page numbers, page descriptions, and all other pertinent data relating to the Irrigation System. Design shall include the following: Hydraulic calculation for the worst case scenario irrigation head in the worst case irrigation zone shall be provided. This calculation shall provide the actual head pressure for this identified sprinkler head and shall be representative for the system. A hydraulic calculation showing the design pressure for the worst case scenario irrigation head in the worst case irrigation zone shall be provided. The licensed irrigator or Landscape Architect shall affix their seal over these hydraulic calculations. The manufacturers recommended pressure for each product used shall be noted on the design and hydraulic section. Location of Heads - Represent design location as accurately as possible. Make minor adjustments on site with approval of the irrigation designer or Landscape Architect as necessary to ensure consistent and even spacing where applicable. Design for 100% coverage, head to head spacing, and matched precipitation rate (MPR) application. Set all heads minimum 4 from back of curb and 4" from edge of concrete walls. Utilize a center fed valve configuration and progressive pipe sizing of all irrigation lines. If appropriate, the use of a looped main is preferred. When a looped main is used, there shall be independent isolation valves at each leg of the looped main. Comply with a maximum velocity of 5 linear feet per second through the discharge piping of the Irrigation System. Design landscape beds and turf on separate zones. Rotors and spray shall also be on different zones. If drip is used, it shall utilize pressure compensation, pressure regulation, and pressure filtration. Include a sheet(s) titled Typical Exploded Views. This sheet shall show detail of specific installation applications. All major component utilized on the project shall have a Typical Exploded View A statement on the irrigation designer or Landscape Architects letterhead shall be included that indicates the irrigation design provided to the Owner is in 100% compliance with all prevailing city codes, ordinances, and the TCEQ standards, rules, and regulations. Document will contain the seal of either the licensed irrigator or the Landscape Architect. Submit an ET (Evapotranspiration) based schedule indicating length of time each valve is to be open to produce a given amount of precipitation for the ET value of July. Submit the recommended monthly adjustment rates in percentages for the ET of the other eleven months. Include any schedules deemed appropriate for any watering windows that may be imposed by the Authority Having Jurisdiction (AHJ) and/or requested by the Owner. SUBMITTALS Provide a completed As Built Drawing to the Owner at the completion of the project. This Record Drawing shall be in the form of paper copy as well as a USB. Product Data: For each type of product indicated. Include rated capacities, operating characteristics, electrical characteristics, and furnished specialties and accessories. Shop Drawings: For the sprinkler heads, automatic valves, controllers, backflow preventers, connections, details, and related items Operation Instructions for all applicable irrigation components. Maintenance instructions on items requiring manufacturer's standard detail submittal. Wiring Diagrams: For power, signal, and control wiring. Qualification Data: For qualified Installer. Zoning Chart: Show each irrigation zone and its control valve. Controller Timing Schedule: Indicate timing settings for each automatic controller zone. Field quality-control reports. DELIVERY, STORAGE, AND HANDLING Deliver materials in manufacturer's unopened packaging labeled to indicate manufacturer's name and product identification. Ensure that packaging and labeling remain intact until installation. Store materials protected from the elements, including direct sunlight. Pipes shall be handled so as to prevent being damaged and to maintain their straightness. Pipe ends shall be wrapped. Pipes shall be stored on beds the full length of the pipes. Damaged or dented pipes or fittings shall not be used. At no time will pipe joints other than swing joints; be accepted at lengths that are less than 20 feet in length. PRODUCTS PIPES Markings - Thermoplastic pipes shall be marked in accordance with ASTM D 1785 and ASTM D 2241 as applicable and shall bear the NSF mark in accordance with NSF 14. Irrigation Main Pipe - ASTM D 2231, PVC, 1120 or 1220, Schedule 40. or Class 200. Irrigation Lateral Line Pipe Pipes 3/4 inch diameter and larger: ASTM D 2231, PVC, 1120 or 1220, SDR 21.0, 200 PSI Pipes 1/2 inch diameter: ASTM D 2241, PVC, 1120 or 1220, SDR 13.5, 315 PSI Copper Tubing - ASTM B 88, Type K FITTINGS FOR SOLVENT WELDED JOINTS Schedule 40: ASTM D 2466 Schedule 80: ASTM D 2467 SOLVENT CEMENT FOR SOLVENT WELDED JOINTS IPS Weld-On PVC Cement: IPS Corporation, 455 West Victoria Street, Compton, Ca 90220; 1-800-421-2677. Weld-On 700 for PVC pipe up to 4 and /or Weld-On 710 for PVC pipe up to 2. In the event PVC pipe is greater than 4 then a Weld-On 704 series medium body shall be used. IPS Weld-On Primer: IPS Corporation, 455 West Victoria Street, Compton, Ca 90220; 1-800-421-2677. Weld-On P-68 or P-70 primer shall be used for surface preparation for all PVC pipe and fittings prior to cement applications. FITTINGS FOR THREADED JOINTS ASTM D 2466, PVC, Schedule 80. SEALANT FOR THREADED JOINTS UNDER CONSTANT PRESSURE No liquid Teflon or pipe dope shall be used on any threaded electric irrigation control valve. A high quality MIL-SPEC (MIL-T-27730) Teflon tape shall be used for threaded electric irrigation control valves. All other types of threaded joints under constant pressure may use RECTOR SEAL LIQUID TEFLON by Rector Seal Corp., 2830 Produce Row, Houston, Texas 77023, (713) 928-6423, or approved equal. SLEEVES UNDER PAVING FOR CONTROL WIRE AND IRRIGATION LINES ASTM D 2466, PVC, Schedule 40, sized as shown on Drawings. In the event the sleeve is not shown on plan or an additional sleeve is to be installed, the sleeve shall be at a minimum two (2) pipe sizes larger than the pipe that is to be routed through the sleeve. For sleeves that are to be used specifically for control wires only, the sleeve shall be a 1-1/2 sleeve Sleeves shall extend a minimum of 12 beyond the obstacle that was sleeved. Sleeves shall be marked and located on the Record Drawings by one of the methods listed below: A minimum of two measurements from two known and fixed positions that terminate at the end of the sleeve. A GPS (Global Positioning System) fix in degrees, minutes, and seconds for the longitude and latitude location of the end of the sleeve. Sleeves shall have an identification marker installed in the concrete at the point where the sleeve is located. These markers shall be Berntsen Survey markers as provided by Berntsen International Inc., P.O. Box Madison, WI 53708-8670. Telephone number: 800-356-7388 The markers shall be a 3 Aluminum domed concrete marker, part number C-35-D as per Berntsen International Inc. The markers shall have at the minimum, the following information stamped on them: MD Anderson Irrigation sleeve Sleeve size in inches Marker layout shall be approved by MD Anderson, and Grounds and Landscape Department prior to placing final order for the markers. Install markers per the manufacturers specifications. IRRIGATION SPRINKLER HEADS Rotor and spray sprinkler heads and all landscape irrigation drip line shall be provided by Rain Bird, 6991 E. South point Road, Tucson, As, 85706. Telephone 520-741-6100 unless specifically authorized by MD Anderson, Grounds and Landscape Department. Spray Heads Spray heads shall be Rain Bird 1800 series sprinkler heads with the height as indicated on the design or design legend. Under no conditions will an 1802 series sprinkler head be installed. The nozzles shall be from the MPR series unless otherwise indicated on the design. 1800 series sprinkler heads shall have filters installed. SAM-PRS (Seal-A-Matic check valve and in-stem pressure regulation) sprinkler heads shall be installed on all projects where the turf area is adjoined by a pedestrian walk path. They are not required in areas other than low drainage or areas that are specifically called for in the design. All other areas will use the standard 1800s as specified. If adjustments of radius are required on a specific design that reduces the radius of a given nozzle by more than 25%, then a Rain Bird PCS (Pressure Compensating Screen) with the appropriate color shall be installed. Sprinklers shall be connected to irrigation lateral lines by swing joints. Swing joints shall be constructed via flexible PVC with a street elbow on one end and a coupler on the other end. Swing joints shall be solvent welded with hot glue and shall be constructed at least 24 hours prior to installation. The nozzles on pop-up spray head body shall be as shown on Drawings and shall be capable of covering the radius as designated on Drawings. Rotor Heads Rotor heads shall be from the Rain Bird product line. When the site conditions permit, Rain Bird 5000 series rotor heads with MPR nozzles shall be used. When site conditions dictate larger diameter rotors, the designer shall utilize Matched Precipitation Rate design concepts in the nozzle selection. Drip Irrigation Drip irrigation products shall be from the Rain Bird product line. All use of drip irrigation that is incorporated into the design shall utilize the following items: All drip applications shall utilize Pressure Compensation type products and a uniform regulated pressure. All drip applications shall utilize a pressure regulator incorporated into the valve configuration. All drip applications shall have air/vacuum relief valves and flush flow valves installed as per manufactures specifications. All drip applications shall incorporate a Rain Bird Automatic Filter kit with each section of drip. The drain line from this filter shall be routed to either a drain approved by the Owner, or to an area where it can be discharged via an impact type head with a large nozzle. Under no circumstances shall the drain line be day lighted. The stainless steel mesh screen shall be a 150 micron mesh. The valve configuration shall be sized according to the manufacturers specifications. When site conditions permit, utilize the Rain Bird Landscape Drip line. The spacing standards shall be: 12 spacing sandy soil conditions 18 spacing loam soil conditions 24 spacing clay soil conditions Design preference is for use of uniform rows, centers fed zones, and maximum spacing not exceeding the manufacturers specifications. The drip shall be designed and installed as per the manufacturers recommendations. ELECTRIC REMOTE CONTROL VALVES Remote control irrigation zone valves shall be manufacutred by Rain Bird, 6991 E. Southpoint Road, Tucson, Az, 85706. Telephone 520-741-6100. These valves will be Rain Bird PEB Normally Closed (N.C.) series valves with the size shown on the design. A Normally Open (N.O.) master valve shall be used with the RainMaster DX2 controller. This master valve shall be as per RainMaster specification. REMOTE CONTROL VALVE TAGS Remote control valve tags shall be plastic tags with plastic wire to attach numbered tag to valve. VALVE BOX Valve boxes shall be heavy duty plastic 17 inch by 11-3/4 inch by 12 inch depth, black with black cover. Valve box shall be non-hinged, bolt type by Carson Industries, Inc., 1925 Street, LaVerne, CA 91750, (213) 732-6265, or approved equal. CONTROL WIRE SPLICE BOXES Control wire splice boxes shall be heavy duty plastic 10 inch diameter by 10-1/4 inch deep, black with black cover, No. 910-12B, by Carson Industries, Inc. or approved equal. GRAVEL BACKFILL Gravel backfill for valve boxes and control wire splice boxes shall be 3/8 inch diameter pea gravel. ELECTRIC CONTROLLER(S) Controllers shall be RainMaster DX2 Evolution by RainMaster Irrigation Systems, 3910-B Royal Avenue, Simi Valley, California 93063 (805)527-4498 The DX2 Evolution controller shall be used on all projects unless otherwise specified by MD Anderson, Grounds and Landscape Department. The DX2 Controllers shall be housed in wall mounted Stainless Steel cabinets provided by RainMaster unless otherwise specified. In areas where a wall mount controller is not feasible a Stainless Steel Pedestal mount controller will be used. All DX2 controllers shall have the lighting protection kit installed and shall be grounded and installed as per manufacturers specifications. Coordinate with the Owner as to the communication source for the connectivity to the Central Control system. Once the communications source is determined, the appropriate communications equipment shall be provided as specified under the communications specifications. The number of zones per each controller shall be determined by the irrigation designer or Landscape Architect based on site conditions, water sources, watering windows, and input from the Owner. All controllers specified shall have a capacity to add an additional two zones of irrigation to the number of zones needed without exceeding the controllers capacity. Install the appropriate sized flow sensor as per Rainmaster installation specifications. A master valve shall be used in conjunction with the DX2 controller. The master valve shall be a normally open (N.O.) valve as specified by RainMaster. Equipment Associated with RainMaster Central Control Master Valve A master valve shall be installed on all Irrigation Systems that utilize a DX2 Controller unless otherwise specified by the Owner. The master valve shall be as specified by RainMaster. Flow Sensor The flow sensor shall be a Rainmaster flow sensor sized as per the RainMaster specifications for the main line pipe size and flow. A DX-Flow sensing circuit board will be required for flow sensors Each flow sensor will require EV-CAB-SEN flow sensing cable. The maximum allowable distance is 2000 linear feet. Communications The appropriate type of communications equipment, including cards, wire, and devices shall be specified to correspond with each controller that is used. The Contractor shall coordinate with the Owner as to the connectivity of each device and the existing Central Control software. Rain Switch A wireless rain switch by Hunter shall be installed as per manufacturers specifications utilizing the normally open (N.O.) lead. A conventional hard wire switch will be used when wireless is not compatible. Coordinate with the RainMaster distributor to obtain the required interface kit- DXCID-KIT. IRRIGATION CONTROL WIRE Wire: Solid copper wire, NEC type UF, UL listed for direct burial in ground. Minimum size: No. 14 AWG. No. 12 UF for runs over 1000 LF. The wires for all irrigation control valves shall be red in color. The common wires for all irrigation control valves shall be white in color. Splicing Material shall be King Wire Connectors, Tan in color, by King Innovation, 3801 Lloyd King Drive, St. Charles, Mo 63304. A new King wire connector shall be used for every electrical connection An extra transient or spare wire shall be installed. This transient wire shall be yellow in color and will be labeled as spare in the controller. BACKFLOW PREVENTER Backflow Preventers shall be bronze and copper, pressure vacuum breaker (PVB) assembly Febco model 765 or reduced pressure device (RPZ) model 825 YA by Febco Sales, Inc. (CMB Industries), P.O. Box 8070, Fresno, CA 93747, (209) 252-0791, or approved equal. Size as per Drawings. The backflow devices shall be installed in accordance with the manufacturer, TCEQ, and local codes and standards. The backflow device(s) shall be installed in an enclosure by StrongBox, V.I.T. Products, Inc., 800.729-1314. The enclosure shall be the Smooth Touch Vandal Resistant Backflow Enclosure model sized as per the backflow device. It shall be powder coated the standard dark green color. Each enclosure shall include a PolarBearier insulated blanket sized to fit the backflow device. Each enclosure shall be installed on Contractor built enclosure pad. The holes for the irrigation lines shall be large enough in diameter so as to accommodate foam insulation wrap around the irrigation pipe so as to protect against freeze and chafing. There shall be a drainage area so as to alleviate any standing water inside the enclosure. The pad shall be adequately anchored and shall have the concrete sleeved where the irrigation lines protrude through the concrete. The pad shall have pea gravel no larger than 3/8 diameter installed in the Contractor installed drainage hole in the bottom of the pad. The pad shall have a mechanism installed that will allow the enclosure pad to lock the enclosure to the pad. The Owner will provide padlocks to the Contractor. The Contractor shall ensure all enclosures are locked. The pad shall be installed in locations as per the manufacturers specifications in a location approved by M D Anderson, Grounds and Landscape Department. GATE VALVES Gate Valves shall comply with AWWA C-500. Valves up to 3 inch size shall be 125 pound, bronze body, bronze-mounted, non-rising stem with solid wedge gates. The size shall correspond to the main line they are attached to. QUICK COUPLING VALVES Quick coupling valves shall have heavy duty brass construction, durable thermoplastic rubber cover, stainless steel internal valve spring, two-piece body design. These valves shall be sized as 1. Provide four valve keys with 3/4 inch swivel hose ells. The Quick Coupling valves shall be installed as per the typical exploded view found on the detail sheets. The 1 size shall supersede any sizing that may be shown on an exploded view. Coordinate location of the Quick Coupling valves with M D Anderson, Grounds and Landscape Department. EXECUTION TRENCHING AND BACKFILLING General - Contractor shall comply with Division 31 of these Specifications. Excavate straight and true with bottom uniformly sloped to low points. Protect existing lawns and plantings. Remove and replant as necessary to complete installation. Replace damaged lawn areas and plants with new products to restore to existing installation's original condition. Minimum Cover Provide 18 inch minimum cover over top of installed irrigation main piping. Provide 12 inch minimum cover over top of installed irrigation lateral line piping. Provide 2 inches of earth between parallels and wire. Parallels shall be laid side-by-side, not stacked. Backfill - Backfill with clean material from excavation after obtaining Landscape Architect's approval. Remove organic material, as well as rocks and debris larger than 1 inch in diameter. Place acceptable backfill in 6 inch lifts and water jet all trenches. Existing Lawns - Where trenching is required across existing lawns, (or in event of changes or repairs after new lawn has been established), uniformly cut strips of sod 6 inches wider than trench. Remove sod in rolls of suitable size for handling and keep moistened until replanted. Backfill trench to within 6 inches of finished grade and compact. Continue fill with acceptable topsoil and compact to bring sod even with existing lawn. Replant sod within 2 days after removal, roll and water generously. Resod and restore to original condition all sod areas not in healthy condition equal to adjoining lawns 30 days after replanting. INSTALLATION General - Unless otherwise indicated, Contractor shall comply with requirements of the governing International Plumbing Code and Chapter 344 of the Texas Water Code. Verify all applicable irrigation codes. Pipes Piping Mains and Laterals - Lay out sprinkler mainlines and perform line adjustments and site modifications to laterals prior to excavation. Lay pipe on solid subbase, uniformly sloped without humps or depressions. PVC Pipe Assembly Cut PVC pipe, square and de-burr. Use PVC pipe cutter when possible. Clean pipe and fittings using primer as recommended by the PVC pipe manufacturer. Use purple tinted primer to aid in visual inspection. Apply a thin even flow coat of PVC solvent cement to the pipe first, then the inside of the fitting. Utilize the appropriate size applicator and the correct temperature range of solvent weld material for the size of the pipe. Cure joints as recommended by the manufacturer and keep pipe and fitting out of service during curing period. Construct watertight joints equal or greater in strength than the pipe. Do not tap pipe at fittings. Install plastic pipe in dry weather, when temperature is above 40 degrees F. and in accordance with manufacturer's written instructions. Allow joints to cure at least 24 hours at temperature above 40 degrees F. before testing. Plastic pipe shall be snaked in the trenches in a manner to provide for expansion and contraction as recommended by pipe manufacturer. Sleeves Under Paving The majority of sleeves under paving are existing as shown on Drawings. Where boring is required for new sleeves (refer to Drawings), it shall be a "wet bore." Install sleeves 12" beyond edge of pavement. Perform trench and backfill in accordance with these specifications. Irrigation Heads Flush irrigation lines with full head of water and install heads after hydrostatic test is completed. Install heads at manufacturer's recommended heights. Activate the zone valve and flush out the heads. Locate part-circle heads to maintain a minimum distance of 4 inches from walls and 4 inches from other boundaries, unless otherwise indicated. Check for uniformity of coverage and pattern correctness. Adjust for 100% coverage where required. Install nozzles as indicated on the design. Adjust arcs and radius at the stated manufacturers pressure. Adjust the flow control valve until this pressure is obtained at the last head on each zone. Electric Remote Control Valves Adjust automatic control valves to provide flow rate at rated operating pressure required for each irrigation section. Install valves in valve boxes, arranged for easy adjustment and removal. Locate valves to ensure ease of access for maintenance such that no physical interference with other elements of the project exists. Install a 3 expansion coil at each valve. Remote Control Valve Tags One Remote Control Valve Tag shall be attached to stem of each electric remote control valve. Tags shall be numbered sequentially. Numbers shall correspond to station numbers and controller numbers. Provide tags and corresponding numbers for wires pulled for future valves. Valve Boxes Install valve boxes to cover electric remote control valves. Top of valve box shall be flush with finished grade. Bury minimum 4 bricks under base of each box as support. Control Wire Splice Boxes Install control wire splice box to cover any splice in control wire. Top of valve box shall be flush with finished grade. Bury minimum 4 bricks under base of each box as support. Install control wire splice box to cover wires pulled for future valves. Gravel Backfill - Backfill valve boxes and control wire splice boxes with gravel, minimum 6 inch depth. Electric Controller Controllers shall be fully grounded as per the manufacturers specifications. Connect remote control valves to controller in clockwise sequence to correspond with stations 1, 2, 3, successively. Provide M D Anderson, Grounds and Landscape Department with a size reduced copy of the irrigation plan. Provide two keys to Owner. Keys to be matched with existing controller key locking mechanisms. Power to Controller & Locations: Locations shown on plan for controllers is approximate. Final location shall be determined on site by Owner. Contractor shall supply 120 VAC to controller from adjacent existing power sources. Follow local governing codes in electrical work. Take an ohm reading on all irrigation electric control valves and spare wiring prior to connection to the controller. Note the ohms readings on the Record Drawing. Irrigation Control Wires Provide 24 volt system for control of automatic circuit-section valves of underground Irrigation System. Provide unit capacity to suit number of circuits indicated. Install control wires with irrigation mains and laterals in common trench where possible. Lay control wires neatly together to side of pipe. Provide 3 expansion coils at valves, corners, bores and snake wire in trench to allow for contraction. Tape wires in bundles at 10 foot intervals. Line splices will be allowed on runs of 500 Ft. or more. Splices shall be made and placed in control wire splice boxes. Common ground wire shall be white. No other wires shall be white. Supply one extra wire, for each direction of run, to valve which is located the greatest distance from the controller. Extra wire shall be yellow and labeled as spare in the controller. Color of wire from controller to control valve shall be consistent to each valve. Red shall be used for the zone valves. Provide 12 inch long expansion loop within 3 feet of each wire connection and splice on runs of wire 100 feet or longer. Backflow Preventers Make required connection to water supply according to local codes and manufacturer's written instructions. Install pressure type backflow devices at required grade in accordance with the local Plumbing Code. Exposed mainline and mainline risers above PVC pipe main elevation shall be copper. Install a brass union in the riser on the upstream and downstream of the device. Install the StrongBox and insulation blanket as per manufacturers recommendations. Provide an isolation valve (gate valve) prior to the PVB. Install a valve box as per specifications over the valve. Locate the valve on the as built drawings utilizing one of the following methods. A minimum of two measurements from two known and fixed positions that terminate at the end of the sleeve. A GPS (Global Positioning System) fix in degrees, minutes, and seconds for the longitude and latitude location of device. Have the PVB tested as per Chapter 290 of the Texas Water Code. Provide the Owner a copy of this inspection. TESTING General - Notify Landscape Architect 48 hours in advance when testing will be conducted. Conduct tests in presence of Landscape Architect and a representative of M D Anderson, Grounds and Landscape Department. Hydrostatic Test - Test irrigation main line, before backfilling trenches, to a hydrostatic pressure of not less than 100 psi for 1 hour. Piping may be tested in sections to expedite work. Remove and repair or replace piping and connections which do not pass hydrostatic testing. System shall not lose more than 1-1/2 gallons of water in 1 hour. Shut off mainline at backflow preventer during non working hours until Contractor has demonstrated the mainline is stable. Operational Testing - Perform operational testing after hydrostatic testing is completed, backfill is in place, and irrigation heads are adjusted to final position. Demonstrate to Landscape Architect that system meets coverage requirements, is as specified and indicated, and that automatic controls function properly. Coverage requirements are based on operation of one circuit at a time. After completion of grading, sodding, and rolling of grass areas, carefully adjust lawn sprinkler heads so they will be flush with or not more than 1/2 inch above finished grade. Set shrub sprinkler heads not more than 1/2 inch above top of mulch. MAINTENANCE Coordinate with the Owner on the implementation of the initial ET based irrigation schedule. Maintain the Irrigation System during the installation process and throughout the landscaping maintenance service period as specified in Section 32 91 20 - Exterior Landscape Maintenance. END OF SECTION 32 80 00 FOR MDACC USE ONLY. 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