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HomeMy WebLinkAbout1999-I-344 IRRRIGATION PART 1: GENERAL 1.1 SCOPE A. Furnish and install the IRRIGATION SYSTEM as indicated on the draw- ings and as specified in this section, including but not limited to the following: 1. Mains, valves, backflow preventer and quick coupling valves. 2. Automatic irrigation controller and remote unit. 3. Remote control valves and control wires. 4. Tensiometers. 5. Lateral lines, irrigation heads and anti -drain valves. 6. Testing and record drawings. 1.2 CODE REQUIREMENTS A. Secure, all permits and licenses necessary for the work. Give all notices and comply with all laws, ordinances, rules and regulations concerning the installation of the irrigation systems as drawn and specified. 1.3 SITE CONDITIONS A. Before proceeding with any work, verify all dimensions and quantities and immediately inform the Architect of any discrepancy. B. Before excavating for water lines, locate all underground utility lines so that proper precautions may be taken to avoid damage to such utilities. In the event of a conflict between underground 1ines, promptly notify.the Architect who will arrange for the relocation of one or the other. Failure to follow this procedure places the re- sponsibility e- sponsibi1ity upon the Contractor for making any and all repairs for damage of any kind at his own expense. C. Provide necessary safeguards and exercise caution against injury or defacement of any existing site improvements. Contractor shall be responsible for any damage resulting from his operations and shall repair or replace such damage at his own expense. No trucks or vehicles of any kind shall be allowed to pass over sidewalks, curbs, etc., unless adequate protection i s provided. 1.4 SUBMITTALS A. Materials List Within 20 days after aware of contract, submit for acceptance six (6) copies of a complete materials list, including manufacturer's name and number covering all material required under this contract together with six (6) copies of descriptive literature on all items listed on materials liar. Commence no work before receipt of accept- ance of materials list, and descriptive material. Cover items listed as follows: Plastic pipe and fittings Automatic sprinkler controller Backflow preventer unit Wire and connectors Quick coupling valves Automatic control valves Couplers Vavle boxes Hose swivels Sprinkler heads Epoxy coated steel fittings Anti -drain valves Tensiometers PVC sprinkler head lock Gate Valves Ring-tite pipe B. Record Drawings Record data daily before covering, on the blue line prints. Those prints shall be delivered to the Architect at the time of the instal- lation review. Dimensions shall locate control valves, main line, tensiometers, quick coupling valves, gate valves, plugged ends and stubs and shall be triangulated to permanent and easily identified objects. In addition, the requirements of the Supplementary General Conditions shall be followed. The Owner may invoice and charge the Contractor for all labor in excess of reasonable and normal labor for exca-vati ng and finding pipe, fittings, and valves due to errors or omissions by the Contractor in recording data at any time subsequest to the acceptance . of the work. C. Manuals Furnish two (2) sets of service manuals. Manuals may be loose leaf binders and shall contain complete exploded drawings of all equipment installed showing components and catalog numbers and price lists together with the manufacturer's name and address. 1.5 GUARANTEE A. The entire irrigation system shall be guaranteed for a period of one year from the date of acceptance against all defects in material and workmanship. B. Should trouble develop within the year of guarantee due to poor workmanship or defective material, corrections shall promptly be made at the Contractor's expense. C. Any damage to paving, planting or other developments due to settle- ment of improperly compacted trench soil, shall also be promptly repaired at Contractor's expense, to the satisfaction of the Owner. 1.6 INSPECTIONS A. At the completion of the installation and prior to planting of lawn or ground covers, an inspection shall be made to check the overall coverage of the system by the Contractor and the Architect. B. The entire system shall be checked out thoroughly and completely within five (5) days prior to the final inspection. All heads shall be properly aligned and adjusted for coverage and cleared of any foreign materials. All valves shall be properly adjusted. Irriga- tion rriga- tion controller valve chart shall be checked for accuracy. C. At the end of the Plant Maintenance Period, a final inspection shall be made by the Architect, Contractor and Owner to check out the entire system. 1.7 TESTS A. All tests shall be made in the presence of the Architect or Construc- tion Inspector. At least 48 hours notice shall be given for tests. B. Lines normally under pressure shall be tested as follows: 1. Mains and supply lines:. Four (4) hours at 150 p.s.i. of static pressure. 2. Each system may be tested as a unit or in sections, as directed by the Construction Inspector but each installation shall successfully meet the requirements specified herein before acceptance. 3. Center load pipe with small amount of backfill to prevent arching and whipping under pressure. Leave joints exposed for inspection during pressure test. No waste will be permitted in the pipe until the above has been accomplished and a period of at least 24 hours has elapsed for solvent weld setting and curings. 4. The test shall be made by capping each outlet and filling the pipeline with water. Specified pressure shall be maintained for three hours and the leakage determined. All leaks that are found shall be immediately corrected and the system again subjected to the same test. No pipe, fitting, or joint showing leakage will be accepted. After the piping has been tested to the satisfac- tion of the Inspector, the pipe trenches may be backfilled prior to adjustment and testing of heads and valves. CONSULTANTS C. The Contractor shall not allow or cause any of the work installed by him to be covered before it has been inspected and approved by the Architect or Construction Inspector. Work covered before approval shall be uncovered at the Contractor's expense. D. Automatic controllers shall be tested for seven (7) days just before the end of the established period. E. Prior to ordering pump assembly, verify existing water pressure on site. If the pressure differs from what is called out on plan, notify the Architect immediately. 1.8 CLEAN-UP A. Upon completion of the work, clean up all boxes, wrappings, excess materials, equipment and other rubbish resulting from this work and leave the premises in a clean, neat and orderly condition. PART 2 PRODUCTS 2.1 AUTOMATIC IRRIGATION CONTROLLER A. The irrigation system controller shall be a microprocessor based/micro electronics solid satate type, capable of ully automatic or manual operation of the system. B. The controller shall operate on a minimum of 117 volts A.C. power input and be capable of operating up to four (4) 24 volt A.C. electric remote control valves. The controller shall have a reset circuit breaker to protect it from power overload. C. The controller shall have independently programmable stations. The controller programming schedule shall be based on a variable seven- day (7) cycle. Each station shall have the capability of being programmed to automatically start on any quarter hour up to four (4) times per day. Station timing shall be variable from one (1) minute to nine (9) hours 59 minutes in one (1) minute increments. Controller station operation shall be sequential to avoid overlapping oeprati on. The controller shall have a water budgeting mode to allow simultaneous increasing or decreasing of watering time for all stations. D. While in operation the controller shall provide a monitoring readout indicating station in operation and time remaining. The controller shall have a 12 -hour AM/PM or 24-hour clock. E. The controller shall be capable of being operated manually at any time. A manual "single station" operation for programmed time or new time setting shall be possible without affecting the original program. F. The controller shall have a factory preset back-up program for stand- by operation in the event of a program loss and a rechargeable battery back-up to maintain program during power loss. 2.2 PIPE AND FITTINGS A. General 1. Pressure supply line from point of connection to backflow preventer shall be brass piping. 2. Pressure supply pipe transition from below grade to backflow preventer above grade shall be Schecule 40 brass pipe. 3. Connection between brass or copper pipe or tube shall be an approved device or material such as di -electrical coupling or union which will prevent the flow of electrical current from one tube of metal to another. B. Ring-tite PVC pipe shall be Johns -Manville, Pacific Western or ap- proved equal PVC pipe with ring-tite joints, class 200. 1. All ring-tite joints shall be sealed with rubber rings as pro- vided by the manufacturer. All pipe joints shall provide for expansion and contraction. 2. Fittings shall be epoxy -coated steel fitting (Ames Company, Inc., Woodland, California or approved equal). 3. Thrust blocks shall be provided as required for proper anchorage and durability of the pipe as recommended in the manufacturer's installation guide. C. Plastic pipe (solvent weld) shall be extruded from 100% polyvinyl chloride (PVC). Pipe shall meet the manufacturer's tolerance speci- fied by them in addition to commercial standards. All pipe shall be NSF approved. 1. Main' lines shal 1 be Moore, Cabor, Baldwin or Larco or approved equal, lateral lines shall be class 200, 1120-1220 pipe. a. Irrigation water pressure lines three (3) inches and larger shall be Class 200 ring-tite PVC. (Refer to specifications under Ring-tite PVC.) b. Irrigation water pressire lines two and one-half (2-1/2) inches and smaller sha 1 1 be sch 40, Type I. Grade I. PVC. (Refer to specifications under Plastic Pipe for Solvent Weld.) 2. Pipe shall be free from holes, foreign material, blisters, wrinkles or dents. 3. Pipe shall be produced in 20 feet lengths and shall be continu- ously and permanently marked with the following information: manufacturer's name, kind of pipe, material i.p.s. size and schedule NSF and code approval. 4. Plastic fitting shall be PVC schedule 40 NSF Type I-II plastic similar and equal to fittings manufactured by the Sloan Manufac- turing Company, Sun Valley, CA. 2.3 GATE VALVES GATE VALVE GATE VALVE A. Type 2" or Less 2-1/2" or Less Crane 438 461 or 460 Jenkins 370 326 Kennedy 427 058 Stockham B-115 G-612 Walworth 4 719F B. All gate valves shall have a non -rising stem. Gate valves near walks or curbs shall be set within 12 inches from walk or curb. All gate valves shall be the same size as the largest adjacent main line pipe. C. Gate valves 2-1/2 inches and larger shall have flanged ends and provided with oeprating nut in lieu of handwheel. 2.4 REMOTE CONTROL VALVES A. Remote control valves shall be of the size, capacity, location and manufacturer stated on drawing. 1. All remote control valves shall be set in a valve box set plumb over the valve. 2. The remote control valve shall be a normally closed 24 volt A.C., 60 cycle solenoid actuated globe pattern diaphragm type. Valve pressure rating shall not beless than 150 psi. 3. The valve body and bonnet shall be constructed of heavy cast brass, diaphragm shall be of nylon reinforced nitrile rubber. Solenoid coil shall be encapsulated in molded epoxy. REVISIONS OATEIBYI WUTHRIDGE VILLAGE PARK - PHASE 111 LOTS 119A, :120:, 134, 1,35 FONTANA, CALIFORNIA LANDSCAPE ARCHITECTURE DEV TEN-NINTY, LTD. 14735 VILLAGE DRIVE FONTANA, CALIFORNIA 92335 3. The chart is to be a reduced copy of the actual "record" drawing. In the event the controller sequence is not legible when the drawing is reduced, it shall be enlarged to a readable size. 4. Chart shall be a bl ackl i ne print with a different color used to show the area of coverage for each station. 5. When completed and approved, the chart shall be hermetically sealed between two pieces of plastic, each piece being a minimum 20 mils in thickness. 6. Controller charts shall be completed prior to final inspection. B. Maintenance Personnel After the system has been completed, inspected and approved, instruct the Owner's maintenance personnel in the oeprati on and maintenance of the irrigation system and demonstrate the contents of the manual furnished. C. Materials to be Furnished to Owner Supply as part of this Contract the following items: 1. Two (2) keys for each controller. 2. Two (2) keys for valve boxes. 3. One (1) five (5) foot valve key for four (4) inch gate valves. 4. One (1) radio transmitter and receiver compatible with controller. 5. Two (2) lock keys and two (2) quills equipped with hose swivels for every ten (10) quick couplers and deliver to Owner. IRRIGATION SPECIFICATIONS 9W &r 9 q q DATE DRAWN CHECKED JOB NO. 1214 EAST GREEN STREET, PASADENA, CALIFORNIA 91106 .213/681-3408 31815 CAMINO CAPISTRANO, SAN JUAN CAPISTRANO, CA 92675 714/661-7127 Zoo;�t% pF (�' RERW6H. 00 JR�9. * N, I-Aor "7 I�1i-" DAi t rqT� OF CAILN � SHEET 1j"34 OF 4. The valve shall be actuated by a low power, 2.0 watt, 24 -volt D. Plastic pipe and fittings shall be solvent welded using primer and A.C. solenoid actuator. The solenoid plunger shall have a "Grit solvents as recommended by the manufacturer of the pipe, except where Filter" to insure positive valve operation. screwed or ring-tite connections are required. Pipe and fittings shall be thoroughly cleaned of dirt, dust and moisture, before appli- 5. The valve shall have a flow control stem and cross handle for cation of primer and solvent with a non -synthetic bristle brush in regulating or shutting off the flow of water and a bleed screw the following sequence. for manual operation without electrically energizing the solenoid coil. 1. Apply an even coat of primer to outside of pipe, then to inside of fittings and then re -apply a light coat to outside of pipe, 6. The valve construction shall be such as to provide for all making sure that coated area of pipe is equal to full depth of internal parts to be removable from the top of the valve without fitting socket. disturbing the valve installation. -2. Apply solvent in the same manner and insert pipe quickly into 2.5 VALVE BOXES fitting and turn approximately 1/4 turn to distribute solvent and remove air bubbles; check tees and ells for correct position. A. Plastic valve boxes over gate and control valves shall be Carson Industries, Inc. No 910-12B or Ametek. 3. Use a clean rag and wipe off excess solvent. All welded joints shall cure at least 15 minutes before being moved or handled and B. Gate valve box lids shall be marked "Water" (by the manufacturer). at least 24 hours before water is permitted into the pipe. No Control valve box lids shall be marked "Irrigation Control" (by the solvent cans opened one day shall be used on any following day. manufacturer) with the appropriate station number and controller letter stenciled on lid with white paint. E. All connections between plastic pipe and metal valves or steel pipe shall be made with screw fittings, using plastic male adapters and 2.6 QUICK COUPLING VALVES teflon tape applied to male threads. Make up with light wrench A. Quick coupling valves shall be per irrigation legend. pressure. 1. Steel pipe shall not be screwed into plastic fittings. 2.7 IRRIGATION HEADS 3.5 RING-TITE PVC PIPE AND FITTINGS A. Irrigation heads shall be as indicated on the drawings. A. Install Ring -ti to pipe with skilled craftmen in accordance with pipe B. Provide two (2) extra heads of each type and deliver to Owner. manufacturer's installation guide or manual. Concrete thrust blocks of required size shall be provided at dead ends, angles, valves and C. All sprinklers shall include a head lock fitting, King Bros. HL- other fittings where pressure may occur to cause separation or damage Series PVC. to pipe. Hold-down anchors shall be provided where required or recommended by the manufacturer. 2.8 BACKFLOW PREVENTER A. Backflow preventer shall be as indicated on the drawings. Verify B. Pipe shall be laid with 24 -inch minimum cover above top of barrel in accurately formed trenches. exact location with Architect. C. Maximum defl esti on f rom a straight line shal 1 not exceed that 2.9 WIRE SPLICES recommended by the manufacturer. A. Shall be made with Rain Bird's Snap-Tite UL wire connectors ST-03UL D. Backfill material shall be existing excavated soil containing no rock with PT -S5 sealer. larger than 3/4 -inch in diameter. 2.10 CONTROL WIRES E. The location of field -assembled rings shall be checked with a A. Control wires to remote control valves shall be for direct burial, suitable gauge to verify that the rubber rings are in properposition. Standard National Electric Code. Type UF, G.E. Co., No. S158-51,, or equal. Wire to each remote control valve shall be sized so as not to F. Backfill shall be deposited in trenches uniformly on both side of exceed five per cent (5%) voltage drop value of the impressed voltage pipe for full width of trench and to horizontal diameter of pipe for and in no case less than No. 14 in size. full length of pipe. Soil shall be sufficiently damp to allow thorough consolidation under and on each side of the pipe to provide 2.11 TENSIOMETERS support free of voids. Additional backfill shall be deposited then between pipe joints to an average depth of six inches (6") over top A. Tensiometers shall be "Hydrovisor" HV72030 models, as manufactured by of the pipe. Pipe joints shall remain exposed until completion of Water Conservation Systems, Inc., Claremont, California 714/621-5805. the pressure test. PART 3: EXECUTION G. On completion of pressure and leadage test, exposed couplings and fittings shall be backfilled to a depth of six inches (6") above to 3.1 EXCAVATION of pipe and fittings, and backfill consolidated by jetting. Balance of trench shall be backfilled by wetting and blading before placing A. Excavations shall be open vertical construction sufficiently wide to and while still moist, placed in trench in layers and each layer provide free working space around the work installed and to provide compacted. Thickness of backfill layers permitted shall depend on ample space 'for backfilling and tamping. nature and condition of material and method of compaction. Backfill shall be placed carefully and without damaging pipe or joints, and B. Trenches for pipe shall be cut to required grade lines and compacted compacted to a density of not less than 90 per cent of maximum to provide an accurate grade and uniform bearing for the full length density. of pipe. 3.6 GENERAL SERVICE VALVES C. When two pipes are to be placed in the same trench it is required to maintain a six-inch (6") -space between pipe as a minimum. A. Gate valves located near walks, curbs, and paving shall be installed _ --.-- in such a way as to allow for valve boxes to abut and be on the same D. Depth of cover for pipe lines and control wire as follows: plane as adjacent walks, curbs and paving. T e of Pi in Minimum Depth of Cover Type p B. Valves shall be installed with the best of workmanship, neat appear - 2 - ance and grouping so all parts are easily accessible and maintained. Supply lines to control and quick coupling 24 inches (3" or larger) 3.7 REMOTE CONTROL VALVES valves. 18 inches (2-1/2�� or smaller) A. Remote control valves shall be adjusted so the most remote irrigation Laterals to irrigation heads 12 inches heads operate at the pressure recommended by the head manufacturer. Control Wire (24V) 18 inches 3.8 VALVES BOXES E. Minor variation found necessary during the progress of the work to A. Valve boxes shall be set 1/2 inch in lawn areas and two -inches (2") in shrub and ground cover areas above the designated finish grade ateach conform to actual conditions shall be made without additional cost to valve. the owner. 3.2 BACKFILLING 3.9 QUICK COUPLING VALVES A. Backfill shall not be placed until the installed irrigation system A. Quick coupling valves shall be installed as detailed. has been inspected and approved by the Architect or Construction Inspector. B. Contractor shall provide Owner with two (2) valve keys and two (2) quills equipped with hose swivels. B. Backfill material shall be approved soil, free from rocks larger than one -inch (1") in diameter. In general, the material removed from 3.10 IRRIGATION HEADS excavation may be used except in cases where rock is encountered. In such cases, the rocky material shall be removed from the site and A. Irrigation heads shall be installed as detailed in the drawings. 9 9 suitable fill material, as approved by the Architect, obtained for backfill. B. Upon completion of the installation, the Contractor shall adjust heads to properly distribute water flow and shall place entire irri- C. The top six -inches (6") of trenches shall be backfilled with topsoil gation system in first class operating condition. Adjustable irriga- only. tion heads shall be adjusted by fully opening the head farthest from the control valve. All sprinklers in that section shall be adjusted D. Backfill shall follow excavation with the least possible delay. Open for equal height sprays, regulating the control valve as required to trenches shall be adequately protected to prevent possible hazard to maintain this condition. and interference with the general public. 3.11 CONTROL WIRE E. Backfill from the bottom of the trench to a plane at least six inches (6") above the top of the pipe shall proceed evenly on both sides of A. Wires connecting controller and remote control valve shall be laid in g the pipe and shall be tamped thoroughly, except that heavy equipment trenches with a minimum cover of 18 inches. Bind wires in bundles shall not be used within 18 inches of the pipe. Flooding to obtain with friction tape every ten feet (10 ). compaction may be approved by the Architect, provided the soil is of proper character. B. Encase all wire under paving in class 200 PVC pipe. Wire shall be continuous runs between control valves (without splices); splicing F. Surplus earth remaining after backfilling shall be legally disposed shall occur only at control valves or approved junction box location. of off the premises as directed by the Construction Inspector. 3.12 BACKFLOW PREVENTER G. Where excavating or "jacking" is required under asphalt paving, sidewalks, roads, etc., care shall be taken in backfilling, tamping A. Install unit 12 inches minimum above rade or as necessaryto conform location and inundating with water. to code requirement. Verify exact with Architect before installation. Install unit utilizing brass pipe risers and fittings. 3.3 AUTOMATIC SPRINKLER CONTROLLER B. Assemblyshall be tested b a certified backflow y prevention device A. Install controller per manufacturer's recommendations and as tester, and registered with the local water district and the County indicated on the drawings. Verify controller location with Health Department. Architect. 3.13 TENSIOMETERS B. Electrical connection for controller is included under Electrical Work Division. A. Tensiometers shall be installed as detailed and per manufacturer's specifications. Installation shall be coordinated with Water 3.4 PLASTIC PIPE AND FITTINGS (SOLVENT WELD) Conservatin Systems, Inc., Claremont, California 714/621-5805. A. Plastic materials shall be carefully handled and stored under cover 3.14 FINAL INSPECTION (For City and Client Acceptance): to avoid damage. Beds on which plastic materials are transported or A. Controller Charts stored must be full length of pipe to avoid damage. Any damaged or dented pipe shall not be used in the work. 1. Record drawings must be approved by City before charts are B. Trenches shall be accurately trimmed for uniform bed free from rocks, prepared. clods or other sharp edged objects. 2. Provide one (1) controller chart (of -the maximum size controller C. PVC pipe shall be installed in a manner so as to provide for expan- door will allow) for each automatic controller. Chart shall show sion and contraction as recommended by the pipe manufacturer. All the area covered by controller. vertical changes of direction made with fittings shall not exceed 45 degrees except at valve and head risers (no 90 degree fittings). WUTHRIDGE VILLAGE PARK - PHASE 111 LOTS 119A, :120:, 134, 1,35 FONTANA, CALIFORNIA LANDSCAPE ARCHITECTURE DEV TEN-NINTY, LTD. 14735 VILLAGE DRIVE FONTANA, CALIFORNIA 92335 3. The chart is to be a reduced copy of the actual "record" drawing. In the event the controller sequence is not legible when the drawing is reduced, it shall be enlarged to a readable size. 4. Chart shall be a bl ackl i ne print with a different color used to show the area of coverage for each station. 5. When completed and approved, the chart shall be hermetically sealed between two pieces of plastic, each piece being a minimum 20 mils in thickness. 6. Controller charts shall be completed prior to final inspection. B. Maintenance Personnel After the system has been completed, inspected and approved, instruct the Owner's maintenance personnel in the oeprati on and maintenance of the irrigation system and demonstrate the contents of the manual furnished. C. Materials to be Furnished to Owner Supply as part of this Contract the following items: 1. Two (2) keys for each controller. 2. Two (2) keys for valve boxes. 3. One (1) five (5) foot valve key for four (4) inch gate valves. 4. One (1) radio transmitter and receiver compatible with controller. 5. Two (2) lock keys and two (2) quills equipped with hose swivels for every ten (10) quick couplers and deliver to Owner. IRRIGATION SPECIFICATIONS 9W &r 9 q q DATE DRAWN CHECKED JOB NO. 1214 EAST GREEN STREET, PASADENA, CALIFORNIA 91106 .213/681-3408 31815 CAMINO CAPISTRANO, SAN JUAN CAPISTRANO, CA 92675 714/661-7127 Zoo;�t% pF (�' RERW6H. 00 JR�9. * N, I-Aor "7 I�1i-" DAi t rqT� OF CAILN � SHEET 1j"34 OF