Loading...
HomeMy WebLinkAboutBogert Swimming Pool Filter Bid InviteCITY OF BOZEMAN, MONTANA C A L L F O R B I D S NOTICE IS HEREBY GIVEN that the City of Bozeman, Montana, is accepting sealed bids for: Filter Replacement Bogert Park Swimming Pool Complete filtration system in exact accordance with plans and specifications, including recirculation pump, variable frequency drive controller, regenerative D.E. filter with necessary valves and miscellaneous pool equipment as indicated on the plans. Sealed bid offers need to include an original and three (3) copies for furnishing the above work. Bids will be accepted until 1:30 p.m. (local time) on Tuesday, March 8, 2011 by the Bozeman City Clerk’s Office, Bozeman City Hall, 121 N Rouse Ave., Bozeman, Montana 59715. The physical address is: City Clerk’s Office, Suite 102, City Hall, 121 No. Rouse Avenue, Bozeman, Montana. The mailing address is: City Clerk’s Office, Suite 102, City Hall, P.O. Box 1230, Bozeman, Montana 59771. Bids must be received before 1:30 p.m. Tuesday, March 8, 2011. Original copies must be submitted- no faxed or electronic bids will be accepted. Bids will be opened and read following the close of bids. The award of bids will be scheduled for the March 21 City Commission meeting. Copies of the bid documents may be obtained from the City Clerk at 121 N Rouse Ave. Specifications can also be found on the City of Bozeman’s web page at Bozeman.net Check the tab under bids for this listing. Copies may be requested by phoning (406) 582-2320 or faxing a request to 582-2344. Each entity submitting under this notice shall include a provision affirming in writing the submitting entity will not discriminate on the basis of race, color, religion, creed, sex, age, marital status, national origin, or because of actual or perceived sexual orientation, gender identity or disability in the exercise of contract should it be awarded to that entity. Each entity submitting under this notice shall also recognize in writing the eventual contract will contain a provision prohibiting discrimination as described above and this prohibition on discrimination shall apply to the hiring and treatment of the Contractor’s employees and to all subcontracts. A Pre-Bid Conference will be held on Tuesday, March 1, 2011, 10:00 a.m., at Bogert Park Swimming Pool located at 315 S Church St., Bozeman, MT. PLEASE NOTE: D-U-N-S® NUMBER/ CCR Registration Contractors awarded a contract as a result of this solicitation will be required to provide the city of Bozeman with their unique Dun and Bradstreet “Data Universal Numbering System” (DUNS) number prior to contract execution. If you do not know or do not have a DUNS number, visit www.dnb.com and click on “D & B DU-N-S Number” to obtain a number. NOTICE TO BIDDERS/OFFERORS To ensure that your bid/proposal is responsive, you are urged to request clarification or guidance on any issues involving this solicitation before submission of your response. Your point-of-contact for this solicitation is Dan McCarthy at (406) 582-2906. The City of Bozeman reserves the right to reject any and all bids, and to waive any informality in the bids received. The CITY OF BOZEMAN is required to be an Equal Opportunity Employer. DATED at Bozeman, Montana, this 16th day of February, 2011. Stacy Ulmen, CMC Bozeman City Clerk Legal Ad Sunday, February 20, 2011 Sunday, February 27, 2011 Division 13 Specifications Filter Replacement Bogert Park Swimming Pool Bozeman, Montana INDEX DIVISION 13 SPECIAL CONSTRUCTION Section 13150 POOL GENERAL PROVISIONS Section 13151 POOL PIPING & VALVES Section 13154 POOL PUMP, STRAINER & VFD Section 13156 POOL FILTER Section 13159 PROPOSAL FORM Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL GENERAL PROVISIONS 13150 – Page 1 SECTION 13150 – POOL GENERAL PROVISIONS PART 1 – GENERAL 1.01 GENERAL A. All work called for in this section shall be subject to the project general and special conditions. Contractors doing work of this section shall refer thereto. This section of the specifications is intended to describe the swimming pool filtration system equipment installation and service. All work called for in this section shall be, and remain through the warranty periods, the sole responsibility of this contractor. B. Preference will be given to those contractors supplying the complete filtration equipment for this job from one manufacturer so that all instruction, service and warranty claims will be handled by one organization specializing in this work. Only pool contractors with a verifiable in-house pool construction and service organization will be considered. C. Construction must be completed by June 3rd, 2011. 1.02 RELATED DOCUMENTS A. Requirements of the General Conditions, Supplementary Conditions and Division 1 apply to the work of this section. B. Related Sections: Section 13151 POOL PIPING & VALVES Section 13154 POOL PUMP, STRAINER & VFD Section 13156 POOL FILTER Section 13159 PROPOSAL FORM C. Published specifications, standards, tests, or recommended methods of trade, industry, environmental organizations and applicable code apply to work of this section. 1.03 SUMMARY A. Pool Data: SWIMMING POOL DATA POOL SIZE 59'-0" x 124'-11" SURFACE AREA 7,370 SF POOL PERIMETER 485'10" POOL DEPTH 1'-6" to 3'-0" to 5'-0" to 9'-0" POOL VOLUME 234,783 Gallons TURNOVER 6 Hour RECIRCULATION RATE 653 GPM FILTER SIZE/TYPE 508 SF Regenerative D.E. Filter FILTRATION RATE 1.28 GPM SF of Filter Area Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL GENERAL PROVISIONS 13150 – Page 2 1.04 SUBSTITUTIONS A. The Owner has made a detailed investigation before selecting the specified swimming pool filtration equipment. All bids must include this equipment without substitution since the operation and maintenance of this swimming pool facility has been predicated upon the specified equipment. Contract award will be determined by low bid for specified equipment. B. Substitutions of materials after award of contract: Generally no substitutions will be made after the award of contract. Substitution will be considered only under the following conditions: If, after the award of contract, the Contractor submits proof in writing that a material which is specified and bid, has since become unavailable or for some other justifiable reason is unsuitable for this project, the Contractor shall submit similar material, which he proposes to substitute for approval. C. Prior approval of the regenerative filter shall be submitted to the owner 10 days prior to the bidding of this project. 1.05 DESCRIPTION OF BASE BID A. Base Bid: Complete filtration system in exact accordance with plans and specifications, including recirculation pump, variable frequency drive controller, regenerative D.E. filter with necessary valves and miscellaneous pool equipment as indicated on the plans. B. Notes: a. Any and all required demolition by Owner. b. Any and all electrical work by Owner. 1.06 SUMMARY OF WORK TO BE DONE BY POOL CONTRACTOR A. Work By Pool Contractor (Not All Inclusive): 1. Furnish and install new pool circulation pump with necessary PVC Sch. 40 piping and valves as required. 2. Furnish and install new variable frequency drive unit for the new circulation pump. 3. Furnish and install new regenerative D.E. filter complete with gauge panel, face piping and necessary valves. 4. Furnish and install new hair and lint strainer with extra strainer basket. 5. Furnish and install new Sch. 40 piping in balance tank. 6. Furnish and install new Sch. 40 piping of backwash line to waste. 7. Factory representative required for filter inspection, startup and training. B. Related Work Not In Pool Contract – Performed by Others: Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL GENERAL PROVISIONS 13150 – Page 3 1. Site access for demolition and construction equipment. 2. Disposal of existing filter material and debris. 3. All electrical work not called for in pool schedule of work. 4. Provide access to filter equipment room for filter equipment. 5. All electrical connections and pool equipment grounding shall be by the Electrical Contractor. The Pool Contractor will provide the filter, pump, motor and variable frequency drive control unit. All controls, safety switches, motor starters and disconnects shall be provided and installed by the electrical contractor. 6. Existing make up water piping by Owner. 7. Existing backwash water piping to waste by Owner. 8. Filling of pool, water and chemicals. 9. Heating of pool water by Owner. 1.07 CODES AND STANDARDS A. All work shall conform to the latest editions of the following codes: 1. State Building Code 2. Local Health District Swimming Pool Codes 3. Underwriters Laboratories (UL) 4. Plumbing code 1.08 PERMITS AND FEES A. Each contractor shall acquire any permits required for installation of their work. Each contractor must arrange for any related inspections as required by governing agencies and obtain required certificates of inspection. Each contractor shall pay all sales taxes, fees, permits and other costs pertaining to the installation of their equipment. 1.09 DISCREPANCIES; OMISSIONS A. No Oral interpretation will be made of the specifications or the drawings. Notify the Engineer immediately if discrepancies or omissions from the drawings and specifications are found. In the case of a discrepancy, the option that is more beneficial to the owner shall be used. B. Interpretations of the documents will be made only in form of an addendum. Addenda shall become a part of the contract documents. 1.10 SHOP DRAWINGS A. Submit shop drawings for all equipment in accord with General requirements. 1.11 DRAWINGS Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL GENERAL PROVISIONS 13150 – Page 4 A. Field measurements of existing objects shall take precedence over the information on the drawings. Any alteration of the plan described on the drawings due to a different field location shall be done in consultation with the Owner or his representative. 1.12 CUTTING AND PATCHING A. Saw cut and or core drill all floor, wall and roof openings not provided. B. All penetrations must be properly sealed in accordance with specifications. 1.13 EQUIPMENT ERECTION A. The Contractor shall install all equipment with best construction practices and in accordance with the manufacturer‟s instructions and recommendations. 1.14 TESTS A. The Pool Contractor shall pay for all new pool water piping related plumbing tests required and will provide all materials necessary to perform tests. B. All new piping shall prove absolutely tight under required tests. Make tests before pipe is covered or connected to equipment. C. Remedy all defects found as result of testing. Repair, then repeat test as necessary until results are acceptable. 1.15 ACCEPTANCE OF WORK A. Acceptance shall follow the requirements of the General Conditions. When specified work is completed, the Owner and Contractor will conduct a detailed tour of work area prior to submitting formal acceptance of work completed. Complete conformance with the specifications in every detail is a condition precedent to the acceptance of the work by the Owner. The pool filtration system shall be a complete operating system with all mechanical equipment as specified in the project documents in place and operating before the owner will accept the work as complete. 1.16 MAINTENANCE AND OPERATING INSTRUCTIONS A. Submit three (3) bound copies of maintenance and operating instructions for all equipment and instruct the Owner‟s representative on the proper use and maintenance of the new system and equipment. Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL GENERAL PROVISIONS 13150 – Page 5 1.17 WARRANTIES A. The Contractor shall guarantee all workmanship and material against defects for at least one year from the date of start-up. 1.18 START-UP A. The Contractor is responsible for start-up of filtration system. Chemicals for proper chemistry balance will be provided by the owner. B. Water chemistry to be adjusted by the owner. C. All normal operating chemicals to be supplied by Owner. D. Water balance must include consideration of saturation index, disinfectant level, pH, calcium hardness, alkalinity and all required levels as dictated by the local health district swimming pool code. 1.19 POOL DRAINAGE A. All drainage lines for maintenance of the pool must terminate with a PVC ball valve or drain back to pool or pool equipment. B. Instruction Manual must include drainage instructions. END OF SECTION Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL PIPING & VALVES 13151 – Page 1 SECTION 13151 – PIPING & VALVES PART 1 – GENERAL 1.01 SCOPE A. Furnish all labor necessary to complete the piping and valve installation. B. The Contractor shall furnish materials, equipment and labor to furnish, install and test the piping as described on the drawings and as herein specified. PART 2 – PRODUCTS 2.01 POOL PIPING A. Interconnecting Pipe From Existing System to New Filtration System - All piping connecting the old filter system to the pool new filter system shall be schedule 40 rigid pipe solvent weld bell with schedule 40 solvent weld fittings. All connections to filter over 3" in size shall be flanged connections. Piping shall be installed in accordance with the latest ASTM Publication for Specified Pipe. B. All new circulation piping shall be Sch. 40 PVC. C. All new heater pipe to match existing heater piping. D. Testing - Testing of pipe connecting the filter system to the existing piping shall be as follows: All testing shall be done with water under pressure. All piping under pressure shall be tested at 35 PSI for one full hour without any significant drop in pressure. All piping under vacuum or gravity flow shall be tested at 35 PSI for one full hour without any significant drop in pressure. E. Supports and hangers can be clamp, saddle angle, spring or other standard types. Broad, smooth bearing surfaces are better than narrow or sharp contacts, since they minimize danger of stress concentration and physical damage. Supports generally should not clamp pipe and prevent end wise movement needed to allow for thermal expansion. Rigid clamping is advisable at valves and fittings located near sharp changes in direction when line is subjected to wide temperature changes. With exception of couplings, all plastic fittings shall be supported individually and valves shall be braced against operating torque. Generally, vertical runs are supported by spring hangers and guided with rings or long U- bolts, which restrict movement of rise to one plane. See support spacing chart that follows: Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL PIPING & VALVES 13151 – Page 2 SUPPORT SPACING IN FEET FOR PVC PIPE Nominal Pipe Schedule 40 Schedule 80 Size 60°F 100°F 140°F 60°F 100°F 140°F ½ inch 4½ 4 2½ 5 4½ 2½ ¾ inch 5 4 2½ 5½ 4½ 2½ 1 inch 5½ 4½ 2½ 6 5 3 1½ inch 6 5 3 6½ 5½ 3½ 2 inch 6 5 3 7 6 3½ 3 inch 7 6 3½ 8 7 4 4 inch 7½ 6½ 4 9 7½ 4½ 6 inch 8½ 7½ 4½ 10 9 5 8 inch 9 8 4½ 11 9½ 5½ 10 inch 10 8½ 5 12 10 6 F. Swimming Pool Contractor must adhere to the applicable provisions in Division 15, "General Provisions" and "Basic Materials and Methods". 2.02 VALVES A. Gate Valves 2½ and larger shall be standard iron body, brass trimmed O.S. and Y; flanged ends suitable for 125# S.W.P.; gate valves shall be epoxy coated and suitable for buried installation. B. Thermoplastic Butterfly Valves 4"-12" are wafer style to fit between ANSI B16.5 Class 150 flanges. Disc is smooth and contoured for lowest possible pressure drop (highest Cv). Shaft is 410 S.S. and of one piece, through shaft design, with square drive through entire length of blade. 4"-8" valves shall be complete with a spring loaded 10-15 position latch lever or epoxy coated gear actuators as required or specified. 10" and larger valves shall have epoxy coated gear actuators with handwheel. Seat liners shall be full faced with integral, ribbed flanges. No auxiliary gaskets shall be required for installation. Seat liners shall effectively isolate the body and shaft from the flow media. Seat liners shall also thermally insulate the body from the internal operating temperature. C. Thermoplastic Ball Valves ½"-3" are designed to safely block full system pressure in either direction to allow on-line system maintenance. Valve stem is of the blowout proof design. Valve has full port for lowest possible pressure loss. Seats shall be easily adjustable and replaceable. Stem has an internal pressure sealed land to protect stem and stem seal from contaminants. Every valve must be fully pressure and cycle tested before leaving the factory. D. Check valves, 2½ inch and larger on the recirculation pump shall be iron body, wafer style, brass trimmed, suitable for 125# S.W.P. Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL PIPING & VALVES 13151 – Page 3 E. Thermoplastic Ball Check Valves (1/2"-4") are of all thermoplastic construction. Body has full length ribs for maximum flow, minimum pressure drop and to eliminate ball sticking and chatter. Ball is of solid thermoplastic material. Seat is full circle and resilient. A molded gasket seal and seat enlarges seating surface and facilitates maintenance. Valves require less than one (1) PSI to open and 3-5 PSI to close drop tight. Valves are capable of installation in either vertical or horizontal pipe run. Valves are readily adaptable for foot valve service with the addition of a screen assembly. 2.03 PIPE AND VALVE IDENTIFICATION Color-coded arrows indicating the direction of flow shall be installed on all recirculation piping. All valves shall be identified with minimum 1½ plastic laminate engraved tags with nylon attachment. Valves shall be described as to their function and referenced in the operating instruction manual prepared by the swimming pool contractor. PART 3 – EXECUTION 3.01 PIPING A. General: 1. The contractor shall install all piping with best construction practices and in accordance with all local and state codes. B. Testing: 1. Testing of pipe connecting the new filter system to the existing pool piping shall be as follows: a. All testing shall be done with water under pressure. b. All piping under pressure shall be tested at 35 PSI for one full hour without any significant drop in pressure. c. All piping under vacuum or gravity flow shall be tested at 35 PSI for one full hour without any significant drop in pressure. C. Marking of Pipe: 1. Piping must be properly labeled and marked in accordance with these specifications and all local and state codes. Piping must be marked by label, color code, tag, or other distinguishing marking (permanent marker is not acceptable). B. Supports and Hangers Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL PIPING & VALVES 13151 – Page 4 1. Supports and hangers can be clamp, saddle angle, spring or other standard types. Broad smooth bearing surfaces are better than narrow or sharp contacts, since they minimize danger of stress concentration and physical damage. 2. Supports generally should not clamp pipe and prevent end wise movement needed to allow for thermal expansion. Rigid clamping is advisable at valves and fittings located near sharp changes in direction when line is subjected to wide temperature changes. With exception of couplings, all plastic fittings shall be supported individually and valves shall be braced against operating torque. Generally, vertical runs are supported by spring hangers and guided with rings or long U-bolts, which restrict movement of rise to one plane. C. Glue 1. The glue used for connecting PVC and CPVC pipe shall be clear in color at all locations where the pipe is visible. Pipe installed in non-visible locations may be connected with colored glue. 2. Glue as manufactured by IPS, cement No. 717 (clear) or equal. (Up to 12" Schedule 80). 3. Primer as manufactured by IPS, primer No. P70C (clear) or equal. 3.02 VALVES 1. The contractor shall install all valves with best construction practices and in accordance with the manufacturer‟s instructions and recommendations. All flanges, bolts, nuts, riser handles and gaskets must be non-corrosive, stainless steel or non-metallic unless otherwise specified. 2. Valves must be number tagged and identified in operation manual. END OF SECTION Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL PUMP, STRAINER & VFD 13154 – Page 1 SECTION 13154 – POOL PUMP PART 1 – GENERAL 1.01 DESCRIPTION A. The contractor shall furnish materials, equipment and labor to furnish, install and test the pumping system complete with the pump, motor, mounting base, piping, valves and appurtenances, as indicated on the contract drawings and as herein specified. 1.02 INSTALLATION A. The Contractor shall insure that the pump and motor are properly installed with no pipe strain transmitted to the pump casing. 1.03 RESPONSIBILITY A. To assure a properly integrated and compatible system, all equipment described in this section shall be furnished by the Pump Manufacturer, who shall assume full responsibility for the proper operation of the pump and associated equipment. 1.04 SUPERVISION A. The Contractor shall arrange for the Pump Manufacturer to provide a factory- trained representative as required for the purpose of supervising installation, start-up, final field acceptance testing, and providing instruction to the owner‟s operating personnel in the proper operation and maintenance of the equipment in this section. 1.05 REFERENCE STANDARDS A. The work in this section is subject to the requirements of applicable portions of the following standards: Hydraulic Institute Standards IEEE Standards NEMA Standards OSHA Rules and Regulations Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL PUMP, STRAINER & VFD 13154 – Page 2 PART 2 – PRODUCTS 2.01 GENERAL DESCRIPTION A. The pump shall be a centrifugal vertical close-coupled end suction pump, Aurora 342A or pre-approved equal. 2.02 MATERIALS OF CONSTRUCTION Casing Cast Iron (ASTM A48) Impeller Bronze (ASTM B584) Shaft Steel (AISI C1045) Case Ware Ring Bronze (ASTM B62) Shaft Sleeve Bronze (ASTM B62) Base Suction Elbow Cast Iron (ASTM A48) 2.03 CASING A. The casing will be of the end suction design with tangential discharge outlet. For suction piping diameters of 2" or greater, the suction inlet shall be a flat- faced flange connection and the discharge outlet shall be a bolt through flange connection. Flange connections shall be ANSI 125# rated. The casing shall have tapped and plugged holes for priming and draining. The casing bore shall be large enough to allow “back pullout” of the impeller without disturbing the casing or suction and discharge piping. The casing shall be supported by the driving unit. 2.04 IMPELLER A. The impeller shall be of the enclosed type, vacuum cast in one piece. It shall be finished all over, the exterior being turned and the interior being finished smooth and cleaned of all burrs, trimmings, and irregularities. The impeller shall be dynamically balanced. The impeller will be keyed to the shaft, and fastened with a washer, gasket and capscrew. 2.05 CASE WEARING RING A. The pump casing shall be fitted with a case wear ring to minimize abrasive and corrosive wear to the casing. The case wear ring shall be of the radial type, press fitted into the casing. 2.06 STUFFING BOX Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL PUMP, STRAINER & VFD 13154 – Page 3 A. The stuffing box shall be integrally cast with a mounting bracket. Flushing of the seal chamber shall be accomplished by means of an external line with fittings between the stuffing box and pump casing. 2.07 MECHANICAL SEAL A. Shaft sealing shall be accomplished by means of a mechanical seal with a Ni- Resist seat, carbon washer, Buna-N elastomers and stainless steel metal parts. 2.08 SHAFT A. The impeller shall be direct-coupled to the motor shaft. The motor shaft shall be machined to provide a keyway, and drilled and tapped to accept the impeller fastener. Stub shafts are not acceptable. 2.09 SHAFT SLEEVE A. The pump shaft shall be fitted with a shaft sleeve to minimize shaft wear. The sleeve shall be sealed to the impeller hub by an O-ring, and shall be positively driven by a pin to the keyway. The use of adhesive compounds to fasten the sleeve to the shaft shall not be accepted. 2.10 MOTOR A. The motor shall be a NEMA-JM configuration in accordance with the latest NEMA Standards, and shall have the following characteristics: Enclosure Totally Enclosed, Fan Cooled Number of phases Three (3) Cycles 60 Hz. Voltages 208 Volt (Verify available voltage prior to ordering pump) Speed 3450 RPM Horse Power 20 HP The motor shall have a sufficient horsepower rating to operate the pump at any point on the pump‟s head-capacity curve without overloading the nameplate horsepower rating of the motor, regardless of service factor. The motor shall have a service factor of at least 1.15. The service factor is reserved for variations in voltage and frequency. 2.11 CONDITIONS OF SERVICE A. The following conditions of service shall be strictly adhered to: SWIMMING POOL Number of Units One (1) Type of Drive Constant Discharge Size 4 inch Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL PUMP, STRAINER & VFD 13154 – Page 4 Suction Size 5 inch Design Capacity 700 g.p.m. Design Head 70 feet Rotative Speed 3450 rpm Drive Horsepower 20 HP Connectors Flange 2.12 INSPECTION AND FACTORY TESTS A. Each centrifugal pump furnished under these specifications shall be tested at the factory to verify individual performance (VIP). Certified copies of all test reports shall be submitted to the Owner for approval prior to shipment. Each unit shall be hydrostatically tested in accordance with the Hydraulic Institute Standards. 2.13 INSTALLATION AND ACCEPTANCE TESTS A. The pumping unit shall be installed in accordance with the instruction of the manufacturer and as shown on the drawings by the Contractor. B. Installation shall include furnishing the required oil and grease for initial operation. The grades of oil and grease shall be in accordance with the manufacturer‟s recommendations. 2.14 HAIR AND LINT STRAINER A. Strainer System The strainer system shall consist of a strainer body, a strainer lid and a strainer basket as depicted herein. The strainer system is designed and shall be installed vertically to the floor. The strainer system shall be provided with one influent PVC flange and one effluent PVC flange for horizontal connections. The hair and lint strainer shall be fabricated of Fiberglass Reinforced Plastic (FRP). The material used in manufacturing the FRP components shall be food grade Isophthalic Resin and E Glass. The strainer shall be designed for a maximum operating pressure of 65 PSIG and a normal vacuum service of 20” of mercury. Each strainer shall come with a molded FRP cover plate or lid with clear viewing window, gasket seal, hinged sealing hardware, stainless steel/ FRP strainer basket, drain and vent plugs. B. Strainer Body and Lid The FRP strainer body shall be 10” in diameter with a body flange and strainer lid diameter of 16”. The FRP strainer body and lid shall be manufactured utilizing a process that provides a minimum laminate flexural modulus of 1.82E+06 psi and flexural strength of 36.4 ksi. Each strainer body shall be manufactured in a three- step process comprised of a patented Closed Cavity Bag Molding (CCBM) of the cover plate, branch saddles, body flange, body bottom cap, a filament wound body, and final assembly by gluing. Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL PUMP, STRAINER & VFD 13154 – Page 5 The body flange and lid shall have six (6)-molded slots for attachment of drop-away lid fastening hardware. The lid fastening hardware shall consist of six (6) 3/8” UNC stainless steel threaded rod w/ rod ends and compression knobs. The threaded rod and rod ends are attached to the strainer body through the use of integrally molded ¼” stainless steel pins. The body flange and lid shall have an integrally molded step that forms half of the interlocking groove for the gasket seal. The strainer lid shall be sealed to the body through the use of a 5/16” x ½” food grade EPDM square ring. The unique interlocking seal shall provide for manual opening as well as hand tightened sealing of the lid to the body at 100 PSIG. The FRP strainer body shall come complete with 8” inch influent and 5” inch effluent PVC vanstone flange connections. The strainer lid shall have a clear viewing window for internal debris loading inspection. The PVC flanges, branch saddles, body flange, body bottom, and viewing window shall be chemically bonded to the FRP body and lid utilizing a compatible structural adhesive that creates a joint that exceeds the mechanical properties of the PVC and viewing window respectively. The strainer body and lid shall be manufactured utilizing food grade Isophthalic resin and E glass. The strainer shall vary in thickness to provide durability at the points of maximum stress and shall be suitable for a maximum working pressure of 65 PSIG with a hydrostatic test pressure of 100 PSIG. The body and lid shall have ¼” slotted PVC plugs complete with „O‟-ring seals for draining and venting of the strainer. A high quality professional finish shall be achieved through the application of an exterior UV inhibited surface gelcoat. C. Strainer Basket The strainer basket shall consist of FRP top and bottom caps and a 16-gauge stainless steel basket. Both FRP caps shall be manufactured using the Closed Cavity Bag Molding (CCBM) process. The fastening of the basket to the top and bottom cap shall be free of welded connections through the use of a threaded stainless steel connecting rod. The strainer body and strainer basket shall have an integrally molded location block and recess for self-alignment during installation. The strainer basket shall be pleated with 1/8” perforated holes on staggered centers to maximize open area. The strainer basket shall be supported with (CCBM) FRP gussets attached to the stainless steel connecting rod. The vertical edges of the basket shall be sealed to the strainer body through the use of rubber channel edging. The FRP top cap shall have inspection ports located on the straining side of the basket as well as a molded flow-indicating arrow. The FRP bottom cap shall have perforations on the clean side of the basket to facilitate water drainage during removal of the basket. The bottom cap shall also have an integrally molded reservoir located on the straining side of the basket for debris retention during removal. One extra strainer basket shall be furnished with the strainer assembly. Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL PUMP, STRAINER & VFD 13154 – Page 6 D. Strainer Area The strainer system shall have 246 square inches of open area with open area ratio of 5 to 1 to the influent flanged connection. The strainer shall provide 0-psi head loss when operating at a flow rate of 650 US GPM with a clean strainer basket. The strainer system shall be certified by NSF International to ANSI/ NSF Standard 50 1996 for pool and spa applications. The strainer system shall be Model No. NSS- 10-065-0805 as manufactured by Nemato Corp. 2.15 VARIABLE FREQUENCY DRIVE - AQUA DRIVE A. A Variable Frequency Drive - Aqua Drive unit shall be interlocked with the circulation pump to maximize system reliability and built in protection against system overloads, motor failures, power surges, over voltage, undervoltage, etc. Unit shall be Pentair #AD200-2303-NO1 for a 20 HP pump @ 700 GPM. One (1) required. END OF SECTION Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL FILTER 13156 – Page 1 SECTION 13156 – POOL FILTER CONSTRUCTION PART 1 – GENERAL 1.01 GENERAL A. It is the intent of this specification to describe a water filtration system complete with all necessary items. It is the further intent of these specifications that the filtration unit from the pump through the backwash system, including all filter control valves as hereinafter specified, and all accessories, be supplied and guaranteed by one manufacturer. B. The filter specified shall be of the regenerative diatomaceous earth. The filter shall be a product of a manufacturer regularly engaged in the fabrication of water filtration equipment and who has a minimum of ten (10) years experience in manufacturing regenerative filters. 1.02 STANDARDS A. Filter construction, materials and operation shall meet the standards of NSF International Standard 50 and shall be listed by the NSF International at the time of offering. 2.01 FILTER SYSTEM A. The filter system specified under this section shall be of a pressurized design and shall consist of “Non-Corrosive” Regenerative Media Filter as manufactured by Nemato Corp. B. The filter system shall be of the vertical type requiring precoat media and shall have a maximum flow of 2 U.S. gallons/minute per square foot of filter area. C. The filter tank system shall consist of a 48" vertical filter tank, internal influent manifold, internal filter tubes, internal tube and pressure plates, slopped self- draining bottom plate, face piping, davit, 2-body flanges with back-up rings, gauge panel with 2-60 PSIG gauges, external air relief with a manually adjusted shut off valve, integrally molded 6" viewing window, integrally molded backwash drain port and FRP saddle support. The filter system shall be fabricated in a fully assembled state by the original equipment manufacturer, with face piping and davit disassembled for shipping to prevent damage. 2.02 FILTER TANK A. The vertical filter tank shall be 48" in diameter with a total height of 94.92" without face piping. Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL FILTER 13156 – Page 2 B. Each filter tank shall be manufactured in a five-step process comprised of a patented Closed Cavity Molding (CCBM) of the dished heads, filament winding of the body, rolling of the steel body flange back-up rings. The bottom head shall be chemically joined to the body utilizing a secondary FRP bonding system that creates a lap joint that exceeds the mechanical properties of the FRP laminate. The steel body flange back-up rings shall be chemically bonded to the body and top dished head with a compatible structural adhesive system that creates a joint that exceeds the mechanical properties of the FRP laminate The material used in manufacturing the filter tank shell shall be food grade Isophthalic Resin and three dimensional glass that provides a minimum laminate flexural modulus of 1.82E+06 psi and flexural strength of 36.4 ksi. C. The filter shall be designed for a maximum working pressure of 100 PSIG with a Hydrostatic test pressure of 150 PSIG. The body, dished heads and steel back-up rings shall vary in thickness to provide durability at the points of maximum stress and the thickness shall be determined through a Finite Element Stress Analysis. A high quality professional finish shall be achieved through the application of a smooth, gelcoated or epoxy painted outside surface. D. A 6" integral viewing window complete with acrylic cover, o-ring and grooved coupling shall be located in the body of the filter tank. The viewing window shall be positioned to allow for inspection of the filter tubes during both the filter and backwash cycles. Viewing window ports will be sloped to prevent buildup of media or debris during filter and/or backwash cycle. E. A steel davit shall be attached to the side shell and top dished head of the tank. The davit shall be able to lift and rotate the head in such a manner to allow for complete access to all filter element tubes. The davit shall come complete with a body bracket, rotation bushing, support arm and lifting wheel with threaded shaft. F. An integrally molded 6" backwash drain port shall come complete with a grooved coupling, 45º elbow and PVC vanstone flange connection located in the bottom head of the filter tank body. G. The filter shall have 8" influent and effluent connections that are integrally molded. A continuous, watertight exterior seal at the influent and effluent ports of the filter tank shall be provided with the use of PVC vanstone flange connections. The filter tank shall be mounted on a FRP saddle support, which shall be designed to satisfy Zone 4 earthquake conditions when anchored according to manufacturer‟s specifications. 2.03 INTERNAL FILTER COMPONENTS A. Internal filter tank components shall include an influent manifold, filter tubes, pressure/ tube plates and slopped bottom plate. Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL FILTER 13156 – Page 3 B. The patented influent manifold shall consist of an inlet duct connected to divergent outlet ports with cowls. The ports and cowls shall be hydraulically designed in such manner as to provide precise directional flow control of influent liquids and reduce influent flow velocities as well as the force with which dirt and filtration aid contact the filter tubes. The influent manifold shall provide a uniform flow pattern and reliable dispersion of filtration aid during the precoat cycle. C. The patented filter tubes shall consist of a polyester cloth septum and ABS plastic septum support core. Each filter tube shall have a rigid 2.3” diameter, 47.7” elongated body with 6 longitudinal ribs extending radially from a central hub in the core. All edges of the core coming in contact with the cloth septum shall be rounded to dramatically reduce wear on the filter tube. The septum cloth shall be manufactured of high quality heat set polyester twill that shall provide resistance to movement of the weave while promoting a high degree of permeability. D. The pressure and tube plates shall be manufactured of Vinylester Resin and three dimensional glass utilizing a patented Closed Cavity Bag Molding (CCBM) process that provides a minimum laminate flexural modulus of 1.82E+06 psi and flexural strength of 36.4 ksi. The filter tube effluent port shall be sandwiched between the pressure and tube plates with an “o”-ring compression seal that prevents filter media escaping from the tank. The tube plate design shall provide a minimum 1.00” filter tube spacing to eliminate bridging during the filter cycle. E. The filter tank drain assembly shall consist of a slopped self-draining bottom plate hydraulically engineered to prevent media build-up within the tank, as well as preventing solidification of media in the backwash port through the use of a slopped 45º grooved pipe connection. The bottom plate shall provide complete purging of spent media in both the backwash and rinse cycle. 2.04 FACE PIPING A. The filter shall be provided with 8” PVC face piping, including 8” PVC- EPDM butterfly valves and PVC vanstone flanges which shall be pre- assembled by the original equipment manufacture. B. The influent, effluent and backwash connections for mating to field connected piping shall be PVC vanstone flanges. The operation valves, influent, effluent, backwash by-pass and backwash ports shall all be marked with identification labeling. C. The face piping kit shall come complete with four PVC butterfly wafer valves installed with “o”-ring seals between companion flanges in the face piping kit. The butterfly valves shall be designed for 150 PSIG operating pressures and shall come complete with dynamic dual lip EPDM/ Viton seals for bubble tight shut-off operation. Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL FILTER 13156 – Page 4 D. The face piping kit shall be certified by NSF International to ANSI / NSF Standard 50 for a maximum working pressure of 100 PSIG with a Hydrostatic test pressure of 150 PSIG. 2.05 FILTER AREA A. The filter plant shall consist of one 48” Non-Corrosive Regenerative Media Filter with a total effective filter area of 508 sq.ft. When operating at 2 U.S. G.P.M. per sq.ft. of filter area, the filter system will have a capacity of filtering 243,600 U.S. gallons in 4 hours. 2.06 FILTER MEDIA A. Filter media shall be of the regenerative type and shall be non-hazardous, non-toxic and non-flammable. The media shall a minimum permeability of 4 D‟Arcy‟s with a median pore size of 17 microns. The filter media shall provide a minimum .125” thick filter cake with a precoat coverage of 15 lbs per 1 sq. ft. of filter surface area. B. The filter system shall be certified by NSF International to ANSI / NSF Standard 50 for use with either Diatomaceous Earth or Perlite media. 2.07 REGENERATIVE CYCLE A. The regeneration cycle shall be 2 to 4 minutes in duration through the use of centrifugal frequency generator requiring a centrifugal frequency generator requiring a 120V, 1 phase, 1.3 amp power supply. The Media Release Accelerator (MRA) enclosure shall be totally enclosed, non-venting with a four bolt mounting pattern that allows for non-invasive external mounting to the filter tank. B. The filter tube septum shall be flexible and designed in such a manner to allow for reverse pulse hydraulic bumping to assist in breaking up the filter cake and extend the filter cycle. C. Filters requiring mechanical actuators whether they are pneumatic, hydraulic or electric will not be deemed acceptable and will not be allowed. 2.08 PRECOAT CYCLE A. The filter shall be certified by NSF International to ANSI / NSF Standard 50 for precoating of the filter in the filter cycle. Filters requiring a precoat isolation loop to facilitate the precoat cycle will not be deemed acceptable and will not be allowed. Precoating of the filter shall be through the use of a vacuum funnel transfer system installed directly to the filter. The vacuum funnel transfer system shall be provided to allow recharging of filter tubes from either bulk or bag media storage. Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana POOL FILTER 13156 – Page 5 B. The vacuum transfer system shall include a 4.5 HP U.L. listed, 120 V, 1 phase, 8 amp vacuum motor and will be provided with 10 ft. of 1½" dia. vacuum hose and required fittings. 2.09 PRESSURE GAUGE PANEL A. The pressure gauge panel shall consist of two 2½” diameter gauges scaled from 0- 60 PSIG. The pressure gauges shall be mounted in a flat plastic panel suitable for flange or direct pipe mounting and shall come with a printed system nameplate. The pressure gauges shall be connected to influent and effluent pressure points with air relief cocks, compression fittings and semi-rigid PVC tubing. The filter system shall be certified by NSF International to ANSI/ NSF Standard 50 for pool/ spa and salt water applications. The filtration system shall be model # NPC-048-0508 as manufactured by Nemato Corp. One (1) unit required. 2.10 FLOW INDICATOR A. The existing flow meter shall be reinstalled on the new return line piping. PART 3 – EXECUTION 3.01 INSTALLATION A. Construct according to best practices and instructions of applicable standards described in the general conditions and according to the manufacturer‟s recommendations. END OF SECTION Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana PROPOSAL FORM 13159 – Page 1 SECTION 13159 – PROPOSAL FORM PROJECT: FILTRATION SYSTEM REPLACEMENT, BOGERT PARK SWIMMING POOL, BOZEMAN, MONTANTA DATE: 2011 Proposal of ___________________________________________________________ hereinafter called bidder, a ________________ (State) corporation/partnership/an individual (strike out inapplicable terms), doing business as ____________________________to the _____________________________________________________hereinafter called Owner. To the Owner: The bidder in compliance with your Advertisement for Bids for the construction of the _________________________________, having examined the plans and specifications with related documents and the site of the proposed work and being familiar with all of the conditions surrounding the construction of the proposed project including the availability of materials and labor, hereby proposes to furnish all labor, materials, and supplies and to construct the project in accordance with the contract documents within the time set forth therein and at the prices stated below. The prices are to cover all expenses incurred in performing the work required under the contract documents of which this proposal is a part. Bidder hereby agrees to commence work under this contract on or before a date to be specified in written Notice of Proceed of the owner and to fully complete the project by______________________________________________________. Bidder acknowledges receipt of the following addendum(s) _____________ BASE PROPOSAL: Bidder agrees to perform all of the Construction Work described in the specifications and shown on the plans for the sum of ____________________________________________________Dollars, ($______________). Bidder understands that the owner reserves the right to reject any or all bids and to waive any informalities in the bidding. The bidder agrees that this bid shall be good and may not be withdrawn for a period of 30 days after the scheduled closing time for receiving bids. Filtration System Replacement Bogert Park Swimming Pool Bozeman, Montana PROPOSAL FORM 13159 – Page 2 Upon receipt of written notice of the acceptance of this bid, bidder will execute the formal contract attached within 10 days and deliver a surety bond or bonds as required by the specifications. The bid security attached in the amount of 5% is to become the property of the owner in the event the contract and bond are not executed within the time above set forth as liquidated damages for the delay and additional expense to the owner caused thereby. Respectfully submitted, By: (Signature) Title: Business Address: (SEAL if bid is by a Corporation) 2121 Lovett AvenueSP-1Swimming PoolPlan & SectionPh: 701-258-6012Bismarck, North Dakota 58504Fax: 701-224-9729Bogert ParkSwimming PoolISSUESSWIMMING POOL DATA325 S. Church AveBozeman, MT 59715ELECTRICAL COORDINATION TABLEPUMP SCHEDULE