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HomeMy WebLinkAbout2908-5IRRIGATION SPECIFICATIONS PART 1 - GENERAL 1.01 SCOPE All work shall be performed by a contractor with a C-27 license or greater. The work requit is in knied on the drawings and includes, but is not limited to new irrigation systems in medians and retrofitted irrigation systems on each side of roadway, automatic contrdler, remote control valves, quick cmgdw valves, water connections, and electric conueeti©ss. 1.82 CITY INSPECTiUN&"M3T3 A. 1`t is the landscape contractors responsibility to contact the Engineering Division US --=- Inspector, 48 hours prior to desired inspection of an item at extension (909) 350-6653. B. Prior to release of utilities or maintenance period commencement, the following inspections we required: - Construction of irrigation system in open trench condition (prior to backfill). Pressure test 150 PSI for a throe (3) hour continuous period. - An irrigation coverage tet. - Planting, including street trees. Contact the Parks Planning and Landscape Development Section, Engineering Division for species and locations. - Finish grade prior to seeding. - Compliance with approved landscape plans. - Any special Conditions of Approval attached to project. - Final Inspection. C. The owner's representative and landac conte shall be at this inspection. 1.03 MAINTENANCE GUIDELINES A. Landscape shall be m ' in a seat, clean, weed-i+se and beafty oon611, - This siel include but not limited to: 1. Cultivation of planted beds at into vsls (not to exceed tett (111) days). 2. Regular snowing to maintain a lawn height not to exceed two (2) inches (will vary w1* species). 3. Regular pruning of plate as necessary to control and &sect growth. 4. Scheduled rnaintcnaace of irrigation controller to assure proper application rate of wafer necessary for proper plant growth. Drip irrigation may require specialized landscape maintenance cars. 5. Immediate replacement of plant material as needed dote to death, disease, or lack of growth. 6. Fertilization on a regular schedule as recommended 1.04 TURNOVER IRRIGATION ITEMS A. Controller charts: Provide one controller chart (of the maximum size the controller door will allow) for each automatic controller. The chart shall show the area covered by controller and be Prepared from record drawings. B. Operation and maintenance manual: Two individually bound copies of operation and msirNonaWe menrslt shall be debw ad 10 the C*. C. Supply as part of this coerra I, i the folia" iro■rr: (a) Two keys for each as omatic hof. (b) One valve box cover wrench. D. Materials List: (1) Complete material list shall be submitted to the City's on-site Construction Manager prior to performing any work. Catalog data and full descriptive literature must be submitted whenever the use of items different than those specified is requested. (2) Material list shall be submitted using the following example: Item Description Manufacturer Model 1 Pressure Supply Lincs Lasco Schod.40 2 Lawn Hexad Toro 570 -GP F. Record drawmp for new systems: C tubae ler shall provide completed as4mk drewup which shall be Mylar comes of the pruWA plans and shall conform to the fallaw w&- (1) Record accurately on one set of core sct drrrrra0 eines in dIS week oaeselli9 deprrres fiom the original oonirect drawings. (2) The changes and dimensions shall be recorded in a legible and worbnaniike manner to As satisfaction of the Inspectors. Prior to final inspection of work, submit record drawmV to Inspectors for approval. (3) Dimension from two permanent points of reference (walls, sidewalks, curbs, pavement, etc.). Data to be shown on record drawings shall be recorded day to day as the project is being installed All lettering on drawings shall be a minimum of 1/8 inch in size. (4) Show locations and depths of the following items for new systems: (a) Point of connection for water and electrical (b) Routing of sprinkler pressure lines (dimension maximum 100 feet along routing). (c) Gate valves. (d) Sprinkler control valves. (e) Quick coupling valves. (f) Routing of control wires. (g) Electrical service lines. (h) Sprinkler heads. (i) I.aterallin". 0) Related equipment (as may be directed). (5) Maintain record drawings on site at an tunes. 1.05 GUARANTEE A. The entire sprinkler system, including all work done under this contract, shall be guaranteed by the Contractor against all defects, fault of material, and workmanship, for (1) one year from date of final inspection. B. The Contractor shall instruct the City's. in the operation and ixtertarere of alto system and shall furnish a complete set of operating instructions. PART 2 - MATERIALS 2.01 GENERAL Materials and equipment installed or furnished that do not meet these standards will be rejected and shall be removed from the site at no expense to the City. 2.02 GALVANIZED STEEL PIPE AND FTTTINGS (if applicable) A. All galvanized steel pipe shall be Schedule 40, threaded, coupled, and hot -dipped galvanized, and shall comply with the requirements of ASTM A120-66 or ASTM A53-67. B. All fittings for galvanized steel pipe shall be 150 pound rated galvanized malleable iron, banded pattern. C. Pipe sizes indicated on the drawings we nominal inside diamew, unless otherwise cored. 2.03 BRASS PIPE AND FITTINGS A. Brass pipe and fittings to be I.P.S. standard weigh, 125 UBS, 85% red brass, and are to be used as standpipes on backflow preveeter. B. Where galvanized risers and/or fittings are required, a dielectric union shall be installed at connection point of galvanized and bronze materiaL 2.04 PLASTIC PIPE AND FITTINGS A. All plaoic pipe shall beer tke following srarkis: nanufadwer's some, soai l pipe sim, schedule or class, type of material, pressure rating in PSI, NSF seal of awroval, and the data of extrusion. B. Pressure supply lines 1 1/2 inches and smaller downstream of the backflow prevention unit shall be Schedule 40 PVC. Pressure supply lines 2" and larger shall be either Class 315 solvent weld PVC or Class 200 rubber gasket type PVC. Solvent weld and ring type taupe shall not be used tom on the same pressure supply line. C. Non -pressure lines shall be Class 200 PVC. D. All fittings shall be standard weight Schedule 40 and shall be injection molded of an improved FW flwft Threaded plastic fiWW shah be i*cihm is oWsd. E. All threaded nipples shall be standard weight Schedule 80 with molded threads unless otherwiss specified F. All solvent cementing of plastic pipe and fittings shall be a two-step process, using primer and solvent cement applied per the manufacturer's recommendations. Cement shall be of a fluid consistency, not gel -like or ropy. Pruw and solvent shall be applied to BOTH mating surfaces. 2.05 BACKFLOW PREVENTION UNITS Backflow unit shall be as shown on the drawings. 2.86 VALVES A. Gate valves: (1) Gate valves 2 inches or smaller shall have screwed joints and brass bodies. (2) All gate valves shall have a minimum working p of not less &an 150 PSI and shrA conform to AWWA. B. Remote control valves: Valves shall be as shown on the drawings. Connect the controller in the operating sequence indicated on the drawings. 2.07 VALVE BOXES A. Valve boxes shall be fabricated from a durable, weather resistant plastic material, resistant to sunlight and chemical action of soils. N. The valve box cover shall be secured with a hidden latch I I or bolls. C. The cover and box shall be capable of sustaining a loci of 1,500 pounds. D. Valve box extensions shall be by the same manufacturer as the valve box. E. Gate valve boxes shall be round plastic boxer wilt tit -own covers marked "GATE VALVE'. F. Remote control valve boxes shall be rectangular plastic boxes with bolt -down covers marked wifi the valve identification number stenciled in 2 -inch -high letters/numbers using epoxy resin bars paint of a contrasting color. 2.00 AUTOMATIC CONTROLLER Auiomadc controllers shall be as indicated on the dmwms compie to with hookup to electrical soweies. AN controllers shall be enclosed in a vandal -resistant, waterproof enclosure, LeMeur or approved equal, or as shown on the drawings. All wiring from electrical meter to pedestal mount cntrolkr to be underground and sleeved through concrete pads. 2.09 ELECTRICAL - PRIMARY A. All electrical equipment shall be NEMA Type 3, waterproofed for exterior installation. B. All electrical work shall conform to local cad�oe and or+dlaaeoes. Above gnwires shall be condmit enclosed. 2.10 WIRING - LOW VOLTAGE A. Remote control wire shall be direct -burial AWG -UF type, #14 size according to manufacturer's specifications. B. Connections shall be either epoxy -sealed packet -type or Scotch Lock connectors. C. Ground wires shall be white in color. Control wires shall be of some color fuer a gives controller. Where more than one controller occupies a single trench, each controller shall have different color control wires. 2.11 SPRINKLER HEADS Sprmkler heads shall be as "tdiented oat the draw"Ms. Anti -Dram valva (or e*W) to be wealied as required for elimination of low head drainage. 2.12 IRRIGATION SLEEVES irrigation sleeves shall be SCH 40 PVC. Size shalt be two tunes (2x) sine of pipe, elecuical and pfpas to be sleeved wWataly. Sleeving required under all paved a wfaces. 2.13 SENSOR SYSTEM A. The sensor system shall be as indicated on the drawings. It shall consist of three main analog components: Control Module, Switch Module and Probe. B. The sensor system shall have an operating temperature range of 40 des CenhApdod to 108 degrees Centigrade. PART 3 - EXECUTION 3.01 GENERAL INSTALLATION A. Water Supply: Connections to proposed water meter (meter installation by others) shall be at the location shown on the drawings. Minor changes caused by actual site conditions shall be made at no additional coat to the City. B. Layout: Layout irrigation systems and make minor adjustments required due to differences between site and drawings. Where piping is shown on drawings under paved areas, but running parallel and ad, acsat to planed areae, iaWW the p4ing is the tented areas. C. Diagrammatic Intent: The drawings are essentially diagrammatic. The size and location of equipment and fixtures are drawn to scale where possible. Provide offsets in piping and changes in equipment locations as necessary to aonibrm with des and to aver tiaoar of conflicts with other work. D. Grades: Before stwtft work, carelhity check all grades to detmirtiae that wmt racy sa" proceed, keeping within the specified material depths with respect to finisib grade. E. Inspection: (1) Prior to all work of this section, carefully inspect the installed work of all other trades and verify that all such work is complete to the point where this instaiiaiitnw may properly commence without conflicts. (2) Verify that the irrigation system may be installed in strict accordance with all pertinent codes and regulations, the original design, the referenced standards, and the various manufacturer's recommendations. (3) Verify PSI prior to any wo& Conftd LAsdseape Ani iif prrsenss varies from that indicated on plans. F. Discrepancies: Do not proceed with installation in areas of discrepancy until all discrepancies have bow resolved. G. Field Measurements: Make all necessary measurements in the field to ensure precise fit of items in accordance with the original design. 3.02 TRENCHING A. Contractor shall notify UNDERGROUND SERVICE ALERT (800) 422-4133 at lest two (2) working days before beginning to dig. H. Dig trenches and support pipe continuously on bottom of ditch. Lay pipe to an even grade. Trenching excavation shall follow layout indicated on drawings to the depths below finished grade and as noted. C. Tree roots shall be protected Cut no roots over 1 /2" diameter. Reroute pipe above or below all roots. Preservation of all roots to take precedence over pipe depth requirement All trenching to maximize distance from existing mature trees. Hand digging is required where trenching might impact existing tree roots. D. Provide minimum cover of 30 inches over pressure supply lines under paved areas. E. Provide minimum cover of 19 inches over pressure supply lines 2 1/2 inches and smatter. F. Provide minimum covet of 18 inch+es over control wires. G. Provide minimum cover of 12 inches over non -pressure lines. 3.03 BACXFILLINO A. Initial backfill on all lines shall be of fine granular material with no foreign matter lawW than 1/2 inch in size, 6" above pipe. B. Backfill shall be tamped in 4 -inch layers under the pipe and uniformly on both sides for the full width of the trench and the full length of the pipe. Materials shall be sufficiently damp to permit thorough compaction, free of voids. Backfill shall be compacted to dry density equal to adjacent undisturbed soil and shall conform to adjacent grades. C. Flooding in lieu of tamping is not allowed without specific prior approval. D. Under nes circumstances shall true wheel be used to compare soli. E. Provide sand backfill a minimum of 6 inches over and under all piping under paved areas. 3.04 PIPING A. Piping u"der existing concur* pav+etsent must be itfalled it, siesws 2 1/2" x dial wWr. No hydraulic driving is pertnitteid under any concrete pavement. B. Cutting or breaking of existing pavement is not permitted without written permission from the owner. C. Install pipe with all marking up for vernal imp eetion and verifietiow. D. Remove all dented and damaged pipe sections. E. Contractor shall install concrete thrust blocking at all changes of direction and terminal points of pressure pipe. F. All lines shall have a minimum clearance of 4 inches from each other and 6 inches ftp lines of other trades. G. Parallel lines shall not be installed directly over one another. H. Make all joints in strict accordance with the manufacturer's recommended methods; allow solvent welds at least 15 minutes setup time before moving or handling and 24 hours curing time before filling. I. All threaded plastic -to -plastic connections shall be assembled using Teflon tope. J. For plastic -to -metal connections, use non -hardening pipe dope on all threaded plastic -to -metal connections, except where noted otherwise. K. Pigg shall be waited fic a side to tide in tsesici boftm to ale► for eraparion Siad contraction. 3.05 ASSEMBLIES A. Install all assemblies specified herein according to the respective detail &aw or specificaticenr, using beat "=dwd practice. B. Install backflow assemblies in shrub areas and/or adjacent to other ha dwApe items rather than turf areas, when possible, and at height required by local codes. C. Valves shall be installed in shrub areas whenever possille. D. Each valve box shall be installed on a foundation of pea gravel, backfill one cubic foot minimum. Valve boxes shall be installed with their tops one inch above the surface of surrounding finish grade in shrub area, and flush with turf areas. 3.06 CONTROLLER A. Controller shall be located by Inspector, and placed behind shn and/or s4ecent to other hordecape items. Maintenance access shall be provided B. The irrigation system shall be programmed to operate during the periods of minimal use of the design area and at time of least evaporation and wind turbulence, generally 2:00 A.M. to 6:00 A.M. C. The controller shall be programmed so that each valve operates separately. 3.07 WIRING A. Wiring shall occupy the same trench and be ratted a4oasg the same routs as to Pressure supply lines wberover possible. B. Where more than one wire is placed in a trench, the wiring shall be taped tom at intervals on 12 feet. C. All connections shall be of an approved type and shall owur in a valve bort. Pmvkb an 18 inch service loop at each uectiinn. D. An expansion loop of 12 inches shall be provided at each wire connection and/or directional turn, and one of 24 inches shall be provided at each remote control valve. E. A continuous ran of wire shall be used between the controiier and each rename coWd valve. Under no c' shall splicaa be used without prior � F. Wire running from controller to control valves shall be AWG -UF 600V, No. 14 minimum, solid core, single conductor copper wire, and style Br. (direct burial type G. Spare control wires shall be run to valve box locations as shown on the plans. Provide as 18 inch expansion loop at valve boar. 3.08 FLUSHING THE SYSTEM A. Prior to installation of sprinkler heads, the valves shad be opened and a fall head of wra/tr used to flush out the limes and risers. B. Sprinkler heads shall be installed after flushing the system has been completed. 3.04 SENSOR SYSTEM A. The sensor sysism shall have one or ati soil maiftwe sensors prod to tis slats clock. B. The system shall have one or more Control Modules per time clock and one Switch Module/Probe per designated valve, and will use irrigation wiring. C. The Switch Module shall be wired to the exiataeg solenoid wets and. hwdwii to the probe, and allow switch of use of time clock wires from power of valve to part of Senroir System. Operate on 20-35 VAC 50-60 HZ. D. The Control Module shall have an interface board built into device to allow use of existing station time clock wires as an extension of probe wires back to time clock location. This interface board will also allow grouping of valve/landscape areas together through on common wire, to allow one field sensor to control several valves. Operate an 115 VAC 50 to 60 HZ., and have either normally open or close relay contact. E. The control module shall compensate for the presence of salts and fertilizers. It shall not require re -calibration or over -ride of system when not fertilizing. The Control Mode shall not require any down time field maintenance. F. The Probe shall be constructed of 100% non-metallic con�nenis. 3.10 SPRINKLER HEADS A. Sprinkler heads shall be installed as designated on the drawings. B. Spacing of heads shall not exceed maw indicted on the des or in manufacturer's directions. C. Head height in relation to finish grades shall be as indicated on the drawings at the time of completion. 3.11 ADJUSTING THE SYSTEM Contractor shall adjust valves, align sprinkler heads of each system to maximize coverap to 1001/6 and minimize overspray prior to planting. 3.12 IRMAMN SLEEVING A. Provide minimum cover of eighteen (18) inches on irrigation sleeves to be provided under all paving. B. See 3.02 ('TRENCHING) and 3.03 (BACKFILLING) for further information. 3.13 C0114PLETION CLEANING Upon completion of work, Contractor shall smooth all ground surfaces; remove excess materials, rubbish, debris, etc.; sweep adjacent streets, curbs, gutters, walkways, and trails; and remove construction equipment from the premises. 4 w" '04 ,4YA, POPE , .� 0, J DATE: 7/17/2000 JOB NO.: 99-36 DRAWN BY: S.J.R. REVISIONS: REVISED SIDEWALK LAYOUT 1/8/01 SHEET NUMBER: S I OF: 6 I A F-4 z02 �f � �'� H U U 22 Eta yw PW W E"t U a /=0: L � nLCY UA U DATE: 7/17/2000 JOB NO.: 99-36 DRAWN BY: S.J.R. REVISIONS: REVISED SIDEWALK LAYOUT 1/8/01 SHEET NUMBER: S I OF: 6 I A F-4 z02 �f � �'� H U U CA A CU rJ3 W E"t U a � Z UA U M.y � �a Z aa --let U PL4 O N 0 � ONO U a 0 p W DATE: 7/17/2000 JOB NO.: 99-36 DRAWN BY: S.J.R. REVISIONS: REVISED SIDEWALK LAYOUT 1/8/01 SHEET NUMBER: S I OF: 6 I 0 F-4 z02 � �'� H U CA A CU W W � DATE: 7/17/2000 JOB NO.: 99-36 DRAWN BY: S.J.R. REVISIONS: REVISED SIDEWALK LAYOUT 1/8/01 SHEET NUMBER: S I OF: 6 I