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HomeMy WebLinkAbout2869-15IRRIGATION SYSTEM I. SCOPE Provide all labor, materials, transportation, and services necessary to furnish and install irrigation system as shown on the drawings and described herein. II. QUALITY ASSURANCE AND REQUIREMENTS A. Permits and Fees: The contractor shall obtain and pay for any and all permits and all inspections as required. B. Manufacturer's Directions: Manufacturer's directions and detailed drawings shall be followed in all cases where the manufacturers of articles used in this contract furnish directions covering points not shown in the drawings and specifications. C. Ordinances and Regulations: All local, municipal and state laws, and rules and regulations governing or relating to any portion of this work are hereby incorporated into and made a part of these specifications, and their provisions shall be carried out by the contractor. Anything contained in these specifications shall not be construed to conflict with any of the above rules and regulations or requirements of the same. However, when these specifications and drawings call for or describe materials, workmanship, or construction of a better quality, higher standards, or larger size than is required by the above rules and regulations, the provisions of these specifications and drawings shall take precedence. D. Explanation of Drawings: 1. Due to the scale of drawings, it is not possible to indicate all offsets, fittings, sleeves, etc. which may be required. The contractor shall carefully investigate the structural and finished conditions affecting all of his work and plan his work accordingly, furnishing such fittings, etc. as may be required to meet such conditions. Drawings are generally diagrammatic and indicative of the work to be installed. The work shall be installed in such a manner as to avoid conflicts between irrigation systems, planting and architectural features. 2. The word Architect as used herein shall refer to the Owner's authorized representative. 3. All work called for on the drawings by notes or details shall be furnished and installed whether or not specifically mentioned in the specifications. 4. The contractor shall not willfully install the irrigation system as shown on the drawings when it is obvious in the field that obstructions, grade differences or discrepancies in area dimensions exist that might not have been considered. Such obstructions or differences should be brought to the attention of the Owner's authorized representative. In the event this notification is not performed, the irrigation contractor shall assume full responsibility for any revision necessary. III. SUBMITTALS A. Material List: 1. The contractor shall furnish the articles, equipment, materials or processes specified by name in the drawings and specifications. No substitution will be allowed without prior written approval by the Architect. 2. Complete material list shall be submitted prior to performing any work. Material list shall include the manufacturer, model number and description of all materials and equipment to be used. .3. Equipment or materials installed or furnished without prior approval of the Architect may be rejected and the contractor required to remove such materials from the site at his own expense. 4. Approval of any item, altemate or substitute indicates only that the product or products apparently meet the requirements of the drawings and specifications on the basis of the information or samples submitted. 5. Manufacturer's warranties shall not relieve the contractor of his liability under the guarantee. Such warranties shall only supplement the guarantee. B. Record and As -Built Drawings: 1. The contractor shall provide and keep up to date a complete "as -built" record set of blue line ozalid prints which shall be corrected daily and show every change from the original drawings and specifications and the exact "as -built" locations, sizes, and kinds of equipment. Prints for this purpose may be obtained from the Architect at cost. This set of drawings shall be kept on the site and shall be used only as a record set. 2. These drawings shall also serve as work progress sheets, and the contractor shall make neat and legible annotations thereon daily as the work proceeds, showing the work as actually installed. These drawings shall be available at all times for the inspection and shall be kept in a location designated by the Architect. 3. Before the date of the final inspection, the contractor shall transfer all information from the "as -built" prints to an ozalid sepia, procured from the Architect. All work shall be neat, in ink and subject to the approval of the Architect. 4. The contractor shall dimension from two (2) permanent points of reference, building corners, sidewalks, or road intersections, etc., the location of the following items: a. Connection to existing water lines. b. Connection to existing electrical power. c. Gate valves. d. Routing of sprinkler pressure lines (dimension maximum 100' along routing). e. Sprinkler control valves. f. Routing of control wiring. g. Quick coupling valves. h. Other related equipment as directed by the Architect. C. Controller Charts: 1. As -built drawings shall be approved by the Architect before controller charts are prepared. 2. Provide one controller chart for each controller supplied. 3. The chart shall show the area controlled by the automatic controller and shall be the maximum size which the controller door will allow. 4. The chart is to be a reduced drawing of the actual as -built system. However, in the event the controller sequence is not legible when the drawing is reduced, it shall be enlarged to a size that will be readable when reduced. 5. The chart shall be a black line or blue line ozalid print and a different color shall be used to indicate the area of coverage for each station. 6. When completed and approved, the chart shall be hermetically sealed between two pieces of plastic, each piece being a minimum 10 mils. 7. These charts shall be completed and approved prior to final inspection of the irrigation system. D. Operation and Maintenance Manuals: 1. Prepare and deliver to the Architect within ten calendar days prior to completion of the construction, two hard cover binders with three rings containing the following information: a. Index sheet stating contractor's address and telephone number, list of equipment with name and addresses of local manufacturer's representatives. b. Catalog and parts sheets on every material and equipment installed under this contract. c. Guarantee statement. d. Complete operating and maintenance instruction on all major equipment. 2. In addition to the above mentioned maintenance manuals, provide the Owner's maintenance personnel with instructions for major equipment and show evidence in writing to the Architect at the conclusion of the project that this service has been rendered. E. Equipment to be Furnished: 1. Supply as a part of this contract the following tools: a. Two (2) sets of special tools required for removing, disassembling and adjusting each type of sprinkler and valve supplied on this project. b. Two (2) five foot valve keys for operation of gate valves. c. Two (2) keys for each automatic controller. d. Two (2) quick coupler keys and matching hose swivels for each type of quick coupling valve installed. 2. The above mentioned equipment shall be turned over to the Owner at the conclusion of the project. Before final inspection can occur, evidence that the Owner has received material must be shown to the Architect. IV. PRODUCT DELIVERY. STORAGE AND HANDLING A. Handling of PVC Pipe and Fittings: The contractor is cautioned to exercise care in handling, loading, unloading and storing of PVC pipe and fittings. All PVC pipe shall be transported in a vehicle which allows the length of pipe to lie flat so as not to subject it to undue bending or concentrated external loan at any point. Any section of pipe that has been dented or damaged will be discarded and, if installed, shall be replaced with new piping. 1��t117_�7_�i•tlti�� A. The guarantee for the sprinkler irrigation system shall be made in accordance with the attached form. The general conditions and supplementary conditions of these specifications shall be filed with the Owner or his representative prior to acceptance of the irrigation system. B. A copy of the guarantee form shall be included in the operations and maintenance manual. C. The guarantee form shall be re -typed onto the contractor's letterhead and contain the following information: GUARANTEE FOR SPRICKLER IRRIGATION SYSTEM We hereby guarantee that the sprinkler irrigation system we have furnished and -installed is free from defects in materials and workmanship, and the work has been completed in accordance with the drawings and specifications, ordinary wear and tear and unusual abuse or neglect excepted. We agree to repair or replace any defects in material or workmanship which may develop during the period of one year from date of acceptance and also to repair or replace any damage resulting from the repairing or replacing of such defects at no additional cost to the Owner. We shall make such repairs or replacements within a reasonable time after receipt of written notice from the Owner, we authorize the Owner to proceed to have said repairs or replacements made at our expense and we will pay the costs and charges therefor upon demand. PROJECT: LOCATION: COMPANY: SIGNED: ADDRESS: PHONE: DATE OF ACCEPTANCE: VI- MATFRIAI S A. General: Use only new materials of brands and types noted on drawings, specified herein, or approved equals. B. PVC Pressure Main Line Pipe and Fittings: 1. Pressure main line piping for sizes 2" and larger, shall be PVC Class 315. 2. Pipe shall be made from an NSF approved Type I, Grade I, PVC compound conforming to ASTM resin specification D1784. All pipe must meet requirements as set forth in Federal Specification PS -22-70, with an appropriate standard dimension (S.D.R.). (Solvent -weld Pipe). 3. Pressure main line piping for sizes 1-1/2" and smaller shall be PVC Schedule 40 with solvent welded joints. 4. Pipe shall be made from NSF approved Type I, Grade I PVC compound conforming to ASTM resin specification 1785. All pipe must meet requirements as set forth in Federal Specification PS -21-70. (Solvent -weld Pipe). 5. PVC solvent -weld fittings shall be Schedule 40, 1-2, II -1 NSF approved conforming to ASTM test procedure D2466. 6. Solvent cement and primer for PVC solvent -weld pipe and fittings shall be of type and installation methods prescribed by the manufacturer. 7. All PVC pipe must bear the following markings: a. Manufacturer's name b. Nominal pipe size c. Schedule or class d. Pressure rating in P.S.I. e. NSF (National Sanitation Foundation) approval f. Date of extrusion 8. All fittings shall bear the manufacturer's name or trademark, material designation, size applicable I.P.S. schedule and NSF seal of approval. C. PVC Non -Pressure Lateral Line Piping: 1. Non -pressure buried lateral line piping shall be PVC class 200 with solvent -weld joints. 2. Pipe shall be made from NSF approved, Type I, Grade 11 PVC compound conforming to ASTM resin specification D1784. All pipe must meet requirements as set forth in Federal Specification PS -22-70, with an appropriate standard dimension ratio. 3. Except as noted in paragraph 1 and 2 of section 2.01C, all requirements for non -pressure lateral line pipe and fittings shall be the same as for solvent -weld pressure main line pipe and fittings as set forth in section f2.018 of these specifications. D. Brass Pipe and Fittings: 1. Where indicated on the drawings, use red brass screwed pipe conforming to Federal Specification #WW -P-351. 2. Fittings shall be red brass conforming to Federal Specification #WW -P-460. E. Galvanized Pipe Fittings: 1. Where indicated on the drawings, use galvanized steel pipe ASA Schedule 40 mild steel screwed pipe. 2. Fittings shall be medium galvanized screwed beeded malleable iron. Galvanized couplings may be merchant coupling. 3. All galvanized pipe and fittings installed below grade shall be painted with two (2) coats of Kippers #50 Bitumastic. F. Gate Valves: 1. Gate Valves 3" and smaller shall be 125 Ib. SWP bronze gate valve with screw-in bonnet, nonrising stem and solid wedge disc. 2. Gate valves 3" and smaller shall have threaded ends and shall be equipped with a bronze handwheel. 3. Gate valves 3" and smaller shall be similar to those manufactured by Nibco or approved equal. 4. All gate valves shall be installed per installation detail. G. Quick Coupling Valves: 1. Quick coupling valves shall have a brass two-piece body designed for working pressure of 150 P.S.I. operable with quick coupler. Key size and type shall be as shown on plans. H. Backflow Prevention Units: 1. Backflow preventers and/or vacuum breakers shall be of size and type as indicated on the drawings. All sprinkler irrigation systems that are using water from the potable water system shall require backflow prevention. All backflow prevention units shall be installed in accordance with the requirements set forth by local codes and the County Health Department. 2. Sprinkler irrigation systems which use water from the "reclaimed water' system will not require backflow prevention. However, all pressure main line piping receiving water from the "reclaimed water" system shall be of an approved type of purple pipe approved warning tape. Refer to reclaimed water notes for additional information. I. Anti -Drain Valves: 1. Anti -drain valves shall be of heavy duty virgin PVC construction with F.I.P. thread inlet and outlet. Internal parts shall be stainless steel and neoprene. Anti -drain valve shall be field adjustable against drawout from 5 to 40 feet of head. Anti -drain valve shall be similar to the Valcon "ADV" or approved equal. J. Control Wiring: 1. Connections between the automatic controllers and the electric control valves shall be made with direct burial copper wire AWG-U.F. 600 volt. Pilot wires shall be a different color wire for each automatic controller. Common wires shall be white with a different color stripe for each automatic controller. Install in accordance with valve manufacturer's specification and wire chart. In no case shall wire size be less than 914. 2. Wiring shall occupy the same trench and shall be installed along the same route as pressure supply or lateral lines wherever possible. 3. Where more than one (1) wire is placed in a trench, the wiring shall be taped together at intervals of ten (10) feet. 4. An expansion curl should be provided within three (3) feet of each wire connection and at least every one hundred (100) feet of wire length on runs more than one hundred (100) feet in length. Expansion curls shall be formed by wrapping at least five (5) turns of wire around a one -inch in diameter pipe then withdrawing the pipe. 5. All splices shall be made with Scotch -Lok #3576 Connector Sealing Packs, Pen-Tite wire connector, or approved equal. Use on splice per connector sealing pack. 6. Field splices between the automatic controller and electrical control valves will not be allowed without prior approval of the Architect. K. Automatic Controllers: 1. Automatic controllers shall be of size and type shown on the plans. 2. Final location of automatic controllers shall be approved by the Owner's authorized representative. 3. Unless otherwise noted on the plans, the 120v volt electrical power to the automatic controller location to be furnished by others. The final electrical hook-up shall be the responsibility of the irrigation contractor. L. Electric Control Valves: 1. All electric control valves shall be the same manufacturer as the automatic controllers, or per plan. 2. All electric control valves shall have a manual flow adjustment. 3. Provide and install one control valve box for each electric control valve. M. Control Valve Boxes: 1. Use 9" x 24" round box for all gate valves, Brooks #9 or approved equal. 2. Use 9-112" x 16" x 11" rectangular box for all electrical control valves, Carson Industries 1419-126 or approved equal. N. Sprinkler Heads: 1. All sprinkler heads shall be of the same size, type and deliver the same rate of precipitation with diameter (or radius) of throw, pressure, and discharge as shown on the plants and/or specified in these special provisions. 2. Spray heads shall have a screw adjustment. 3. Riser units shall be fabricated in accordance with the details shown on the plans. 4. Riser nipples for all sprinkler heads shall be the same size as the riser opening in the sprinkler body. 5. All sprinkler heads of the same type shall be of the same manufacturer. VII. INSPECTION A. Site Conditions: 1. All scaled dimensions are approximate. The contractor shall check and verify all size dimensions and receive Architect's approval prior to proceeding with work under this section. 2. Exercise extreme care in excavating and working near existing utilities,. Contractor shall be responsible for damages to utilities which are cause by his operations or neglect. Check existing utilities drawings for existing utility locations. 3. Coordinate installation of sprinkler irrigation materials, including pipe, so there shall be NO interference with utilities or other construction or difficulty in planting trees, shrubs, and ground covers. 4. The contractor shall carefully check all grades to satisfy himself that he may safely proceed before starting work on the sprinkler irrigation system. VIII. PREPARATION A. Physical Layout: 1. Prior to installation, the contractor shall stake out all pressure supply lines, routing and location of sprinkler heads. 2. All layout shall be approved by Architect prior to installation. B. Water Supply: 1. Sprinkler irrigation system shall be connected to water supply point of connection as indicated on the drawings. 2. Connections shall be made at approximate locations as shown on drawings. Contractor is responsible for minor changes caused by actual site conditions. C. Electrical Supply: 1. Electrical connections for automatic controller shall be made to electrical points of connection as indicated on the drawings,. 2. Connections shall be made at approximate locations as shown on drawings. Contractor is responsible for minor changes caused by actual site conditions. IX. INSTALLATION A. Trenching: 1. Dig trenches straight and support pipe continuously on bottom of trench. Lay pipe to an even grade. Trenching excavation shall follow layout indicated on drawings and as noted. 2. Provide for a minimum of eighteen (18) inches cover for all pressure supply lines. 3. Provide for a minimum cover of twelve (12) inches for all non -pressure lines. 4. Provide for a minimum cover of eighteen (18) inches for all control wiring. B. Backfilling: 1. The trenches shall not be backfilled until all required tests are performed. Trenches shall be carefully backfilled with the excavated materials approved for backfilling, consisting of earth, loam, sandy clay, sand, or other approved materials, free from clods of earth or stones. Backfill shall be mechanically compacted in landscaped areas to a dry density equal to adjacent undisturbed soil in planting areas. Backfill will conform to adjacent grades without dips, sunken areas, humps or other surface irregularities. 2. A fine granular material backfill will be initially placed on all lines. No foreign matter larger than one-half (1/2) inch in size will be permitted in the initial backfill. 3. Flooding of trenches will be permitted only with approval of the Architect. 4. If settlement occurs and subsequent adjustments in pipe, valves, sprinkler heads, lawn or planting, or other construction area is necessary, the contractor shall make all required adjustments without cost to the Owner. C. Trenching and Backfill Under Paving: 1. Trenches located under areas where paving, asphaltic concrete or concrete will be installed shall be backfilled with sand (a layer six (6) inches below the pipe and three (3) inches above the pipe) and compacted in layers to 95% compaction, using manual or mechanical tamping devices. Trenches for piping shall be compacted to equal the compaction of the existing adjacent undisturbed soil And shall be left in a firm unyielding condition. All trenches shall be left flush with the adjoining grade. The sprinkler irrigation contractor shall set in place, cap and pressure test all piping under paving prior to the paving work. 2. Generally, piping under existing walks is done by jacking, boring or hydraulic driving, but where any cutting or breaking of sidewalks and/or concrete is necessary, it shall be done and replaced by the contractor as part of the contract cost. Permission to cut or break sidewalks and/or concrete shall be obtained from the Architect. No hydraulic driving will be permitted under concrete paving. D. Assemblies: 1. Routing of sprinkler irrigation lines as indicated on the drawings is diagrammatic. Install lines (and various assemblies) in such a manner as to conform with the details per plans. 2. Install NO multiple assemblies on plastic lines. Provide each assembly with its own outlet. 3. Install all assemblies specified herein in accordance with respective detail. In absence of detail drawings or specifications pertaining to specific items required to complete work, perform such work in accordance with best standard practice with prior approval of Architect. 4. PVC pipe and fittings shall be thoroughly cleaned of dirt, dust and moisture before installation. Installation and solvent welding methods shall be as recommended by the pipe and fitting manufacturer. 5. On PVC to metal connections, the contractor shall work the metal connections first. Teflon tape or approved equal shall be used on all threaded PVC to PVC, and on all threaded PVC to metal joints. Light wrench pressure is all that is required,. Where threaded PVC connections are required, use threaded PVC adapters into which the pipe may be welded. E. Line Clearance: All lines shall have a minimum clearance of six (6) inches from each other and from lines of other trades. Parallel lines shall not be installed directly over one another. F. Automatic Controller: Install as per manufacturer's instructions. Remote control valves shall be connected to controller in numerical sequence as shown on the drawings. G. High Voltage Wiring for Automatic Controller: 1. 120 volt power connection to the automatic controller shall be provided by the irrigation contractor. 2. All electrical work shall conform to local codes, ordinances, and union authorities having jurisdiction. H. Remote Control Valves: Install where shown on drawings and details. When grouped together, allow at least twelve (12) inches between valves. Install each remote control valve in a separate valve box. The irrigation controller letter and the valve station number shall be placed on a plastic identity tag and attached to the valve wires. The valve box shall be branded on the cover with the same information. I. Flushing of System: 1. After all new sprinkler pipe lines and risers are in place and connected. All necessary diversion work has been completed, and prior to installation of sprinkler heads, the control valves shall be opened and a full head of water used to flush out the system. 2. Sprinkler heads shall be installed only after flushing of the system has been accomplished to the complete satisfaction of the Architect. J. Sprinkler Heads: 1. Install the sprinkler heads as designated on the drawings. Sprinkler heads to be installed in this work shall be equivalent in all respects to those itemized. 2. Spacing of heads shall not exceed the maximum indicated on the drawings. In no case shall the spacing exceed the maximum recommended by the manufacturer. An X. TEMPORARY REPAIRS The Owner reserves the right to make temporary repairs as necessary to keep the sprinkler system equipment in operating condition. The exercise of this right by the Builder -Developer shall not relieve the contractor of his responsibilities under the terms of the guarantee as herein specified. XI. EXISTING TREES Where it is necessary to excavate adjacent to existing trees, the contractor shall use all possible care to avoid injury to trees and tree roots. Excavation in areas where two (2) inch and larger roots occur shall be done by hand. All roots two (2) inches and larger in diameter, except directly in the path of pipe or conduit, shall be tunneled under and shall be heavily wrapped with burlap to prevent scarring or excessive drying. Where a ditching machine is run close to trees having roots smaller than two (2) inches in diameter, the wall of the trench adjacent to the tree shall be hand trimmed, making clean cuts thorough. Roots one (1) inch and larger in diameter shall be painted with two coats of Tree Seal, or equal. Trenches adjacent to trees should be closed within twenty-four (24) hours; and where this is not possible, the side of the trench adjacent to the tree shall be kept shaded with burlap or canvas. XII. FIELD QUALITY CONTROL A. Adjustment of the System: 1. The contractor shall flush and adjust all sprinkler heads for optimum performance and to prevent overspray onto walks, roadways, and buildings as much as possible. 2. It is determined that adjustments in the irrigation equipment will provide proper and more adequate cover, the contractor shall make such adjustments prior to planting. Adjustments may also include changes in nozzle sizes and degrees of arc as required. 3. Lowering raised sprinkler heads by the contractor shall -,be accomplished within ten (10) days after notification by Owner. 4. All sprinkler heads shall be set perpendicular to finished grades unless otherwise designated on the plans. B. Testing of Irrigation system: 1. The contractor shall request the presence of the Architect in writing at least 72 hours in advance of testing. 2. Test all pressure lines under hydrostatic pressure of 150 lbs. per square inch, and prove watertight. Note: Testing of pressure main lines shall occur prior to installation of electric control valves. 3. All piping under paved areas shall be tested under hydrostatic pressure of 150 lbs. per square inch, and proved watertight, prior to paving. 4. Sustain pressure in lines for not less than two (2) hours. If leaks develop, replace joints and repeat test until entire system is proven watertight. 5. All hydrostatic tests shall be made only in the presence of the Architect, or other duly authorized representative of the Owner. No pipe shall be backfilled until it has been inspected, tested and approved in writing. 6. Furnish necessary force pump and all other test equipment. 7. When the sprinkler irrigation system is completed, perform a coverage test in the presence of the Architect to determine if the water coverage for planting areas is complete and adequate. Furnish all materials and perform all work required to correct any inadequacies of coverage due to deviations from plans, or where he system has been willfully installed as indicated on the drawings when it is obviously inadequate, without bringing this to the attention of the Architect. This test shall be accomplished before any ground cover is planted. 8. Upon completion of each phase of work, entire system shall be tested and adjusted to meet site requirements. XIII. MAINTENANCE A. The entire sprinkler irrigation system shall be under full automatic operation for a period of seven (7) days prior to any planting. B. The Architect reserves the right to waive or shorten the operation period. XIV_ Cl FAN -11P Clean-up shall be made as each portion of work progresses. Refuse and excess dirt shall be removed from the site, all walks and paving shall be broomed or washed down, and any damage sustained on the work of others shall be repaired to original conditions. XV. FINAL INSPECTION PRIOR TO ACCEPTANCE A. The contractor shall operate each system in its entirety for the Architect at time of final inspection. Any items deemed not acceptable by the inspector shall be reworked to the complete satisfaction of the Architect. B. The contractor shall show evidence to the Architect that the Owner has received all accessories, charts, record drawings, and equipment as required before final inspection can occur. XVI. FINAL INSPECTION SCHEDULE A. Contractor shall be responsible for notifying the Architect in advance for the following inspections, according to the time indicated: 1. Pre job Conference - 7 days 2. Pressure supply line installation and testing - 72 hours 3. Automatic controller installation - 72 hours 4. Control wire installation - 72 hours 5. Lateral line and sprinkler installation - 72 hours 6. Coverage test - 72 hours 7. Final inspection - 7 days B. When inspections have been conducted by other than the Architect show evidence of when and by whom these inspections were made. C. No inspection will commence without as -built drawings. In the event the contractor calls for an inspection without as -built drawings, without completing previously noted corrections, or without preparing the system for inspection, he shall be responsible for reimbursing the Architect at the rate of $75.00 per hour portal to portal (plus transportation costs) for the inconvenience. No further inspections will be scheduled until this charge has been paid. �SS\pNAI LANs ICHA 7 cnM r I . p •� c1:1 tk pF Cp0F0�. Prepared Under The 'Supervision Of : Date : CITY- OF FONTANA* -CALIFORNIA DRAWN BY: SCALE: DESIGNED BY DATE: ' CHECKED BY APPROVED A ENGINEER R.C.E. 25126 EV..OATE 12 31f- DWG. No.: R.C.E. EXP.My r•� LJ v Z co) r. 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