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HomeMy WebLinkAboutContract #: 003998 - From: To: - Exception - ExceptionSchool Department Administration Building Kang Associates, Inc. North Andover, MA January 16, 2014 ADDENDUM #1 The following changes are made to the Bid Documents dated January 2, 2014 for the project School Department Administration Building, North Andover, MA: PROJECT MANUAL ITEMS 1. From the Project Manual, Section 01.31.00 Coordination, Paragraph 2.1, delete Subparagraph A and substitute the following: "A. Removal and disposal of movable equipment and furnishings from existing police station building before demolition. Removal and disposal of minor items remaining after the Owner's work is completed shall be the responsibility of the Contractor." 2. To the Project Manual, Section 01.31.00 Coordination, Paragraph 4.1, Subparagraph B, Item 4, add the following text: "Electrical Contractor shall furnish templates, anchor bolts, and any devices required for concrete embedment to the Contractor. Contractor shall refer to Electrical Drawings for extent and types of light fixtures and coordinate base requirements with Electrical Contractor." 3. To the Project Manual, Section 01.31.00 Coordination, Paragraph 4.1, Subparagraph B, add the following item: 7. Concrete encasement of electrical duct banks." 4. To the Project Manual, Section 01.50.00 Temporary Facilities, Paragraph 8.0, add the following Subparagraph: "8.1 Before demolition of the existing building, the Contractor may use electricity available at the site. The Owner and Architect make no claims regarding the suitability or condition of existing service or distribution systems. Electrical Subcontractor shall provide all proper adapters, wiring, devices, etc. for connection to available power. All temporary electrical work shall be in conformance with Division 26 and codes and requirements of the power company. The Contractor shall pay for all electricity consumed." 5. In the Project Manual, Section 04.21.13 Brick Masonry, Paragraph 1.3, Subparagraph C, Item 1, delete the number "1" and substitute the number "2". 6. In the Project Manual, Section 04.21.13 Brick Masonry, Paragraph 2.9, add the following Subparagraph: "C. Brick Ties Provide two-piece adjustable galvanized brick ties. Provide X -SEAL anchor as manufactured by Hohmann & Barnard, Inc. or equal. 2. Provide adhesive -backed tape for application behind brick ties for protection against air and moisture infiltration. Provide X -SEAL TAPE as manufactured by Hohman & Barnard, Inc. or equal." ADDENDUM #1 1 of 4 School Department Administration Building North Andover, MA Kang Associates, Inc. January 16, 2014 7. In the Project Manual, Section 04.72.00 Cast Stone Masonry, Paragraph 1.3, Subparagraph C, Item 1, delete the number "1" and substitute the number "2". 8. To the Project Manual, Section 06.20.00 Finish Carpentry, add the following Paragraph: "2.3 FIBERGLASS REINFORCED PANELS A. Provide fiberglass reinforced thermosetting polyester resin panel sheets complying with ASTM D 5319 and the following characteristics. Thickness: Nominal 0.12" thick panels. Finish: Smooth finish. Color: Color as selected by the Architect from manufacturer's standard range of colors. Fire Rating: Class A. B. Moldings and Trims: Provide manufacturer's standard PVC trims to finish panels in various conditions, including wall base, inside and outside corners, joints, and edges. D. Accessories: Provide sealants and adhesives as required to achieve a watertight installation. E. Use: Behind service sinks and attic access ladder." 9. To the Project Manual, Section 06.20.00 Finish Carpentry, add the following Paragraph: "3.7 FIBERGLASS REINFORCED PANELS A. Cutting and Drilling: Cut and drill panels with carbide tip saw blades and drill bits or cut with shears. Pre -drill fastener holes. Space fasteners in strict compliance with manufacturer's recommendations. B. Install panels above base with manufacturer's recommended gaps for panel expansion at joints and corners. Apply adhesive and drive fasteners to fit snugly, but do not over -tighten. C. Moldings and Trims: Apply panel moldings to all edges using silicone sealant, providing for required clearances. Apply sealant to all moldings, channels, and joints between panels and different materials to ensure watertight installation." 10. In the Project Manual, Section 07.31.23 Asphalt Shingles, Paragraph 1., Subparagraph C, Item 1, delete the number "1" and substitute the number "3". 11. To the Project Manual, Section 07.53.00 Elastomeric Membrane Roofing, Paragraph 2.2, add the following Subparagraph: "C. Walkway Pads: Protective surfacing for roof traffic shall be Pressure -Sensitive Walkway Pads (with Factory -Applied Tape on the underside of the walkway) adhered to the membrane surface." ADDENDUM #1 2 of 4 School Department Administration Building North Andover, MA Kang Associates, Inc. January 16, 2014 12. From the Project Manual, Section 14.42.16 Vertical Wheelchair Lifts, Paragraph 2.1, Subparagraph G, delete text "Gates at both top and bottom landings." and substitute "Provide full height door at bottom landing and gate at top landing." 13. From the Project Manual, Section 14.42.16 Vertical Wheelchair Lifts, Paragraph 2.1, Subparagraph H, delete all references to "gates" and substitute "gate and door". 14. From the Project Manual, delete Section 210000 in its entirety and substitute the attached Section 210000 Fire Suppression Sprinkler System, dated 1/16/14, 12 pages total. 15. To the Project Manual, add the attached Section 23.09.93 Sequence of Operations for HVAC Controls, date 1/16/14, 7 pages total. DRAWING ITEMS 1. From the Drawings, Sheet C-2, delete note "REFER TO DEDUCT ALTERNATE FOR 6" FIRE CONNECTION" and substitute "FIRE SERVICE INTO THE BLDG IS NOT AFFECTED BY ALTERNATES - REFER TO FP DWGS FOR REQUIREMENTS OF FIRE SERVICE". 2. To the Drawings, Sheet Al, ROOF PLAN #2, add the attached sketch SKA1, dated 1/16/14. 3. On the Drawings, Sheet A5, Detail #2, change both 3" dimensions to 6". 4. On the Drawings, Sheet A5, Details #6 and #7, add the following note: "METAL BASE FLASHING SHALL BE PROVIDED BY ROOFING CONTRACTOR" 5. On the Drawings, Sheet A5, Detail #6, add the following note: "METAL COUNTERFLASHING SHALL BE PROVIDED BY THE MASONRY SUBCONTRACTOR" 6. To the Drawings, Sheet A6, delete Detail #14 and substitute the attached sketch SKA2, dated 1/16/14. 7. On the Drawings, Sheet A7, FINISH SCHEDULE, ROOM #122, COMMENTS, add the following note: "PROVIDE 3'-0" WIDE FRP BEHIND ATTIC ACCESS LADDER FOR FULL HGHT OF LADDER." 8. On the Drawings, Sheet A7, FINISH SCHEDULE, ROOM #123, COMMENTS, add the following note: "PROVIDE 4'-0" HIGH FRP SURROUND BEHIND 3 SIDES OF SERVICE SINK." 9. To the Drawings, Sheets S1 and S2, add the attached sketch SKS-01, dated 1/13/14. 10. On the Drawings, Sheet S4, Section #6, delete text "HSS4x4x'/4' and substitute "HSS3.50.30" 11. From the Drawings, delete Sheet FP1 and substitute the attached sheet FP1, dated 1/16/14. 12. From the Drawings, delete Sheet FP5 and substitute the attached sheet FP5, dated 1/16/14. 13. From the Drawings, delete Sheet P2 and substitute the attached sheet P2, dated 1/16/14. ADDENDUM #1 3 of 4 School Department Administration Building North Andover, MA Kang Associates, Inc. January 16, 2014 14. From the Drawings, delete Sheet M5 and substitute the attached sheet M5, dated 1/16/14. 15. To the Drawings, Sheet E1, ELECTRICAL LIGHTING PLAN #2, add the following note: "PROVIDE SIX 1'x4' LED WRAPAROUND TYPE D LUMINAIRES CONTROLLED BY SINGLE POLE PILOT LIGHT TYPE WALL SWITCH IN EACH OF 2 ATTICS. MOUNT LIGHT SWITCHES @96"AFF, ADJACENT ATTIC ACCESS LADDERS. 16. On the Drawings, Sheet E5, delete 200 amp sub -feed main breaker for the Roof -Top -Unit and substitute 125 amp sub -feed breaker. 17. To the Drawings, Sheet E7, KEYED SITE PLAN NOTES #6, add the following text: "LUMINAIRES SHALL BE TYPE SL4. PROVIDE LITHONIA MODEL "OLBF-8-30K-DDB" OR APPROVED EQUAL." The date, time, and place Sub -bids and General Bids are due remain unchanged. Receipt of Addendum #1 must be recognized on paragraph "B" of the Form of Sub -bid and the Form of General Bid. Failure to do so will result in the rejection of your bid. END OF ADDENDUM #1 ADDENDUM #1 4 of 4 School Department Administration Building North Andover, MA DIVISION 21 - FIRE SUPPRESSSION (Filed Sub -Bid Required) SECTION 210001 FIRE SUPPRESSION SPRINKLER SYSTEM (ALTERNATE) PART 1 - 1.1 GENERAL PROVISIONS MacRitchie Engineering Inc. Janaury16, 2014 A. Attention is directed to the CONTRACT AND GENERAL CONDITIONS and all Sections within DIVISION 1 - GENERAL REQUIREMENTS which are hereby made a part of this Section of the Specifications. B. Time, Manner and Requirements for Submitting Sub -Bids shall be in accordance with Instructions to Bidders. C. Sub Sub -Bid Requirements: (None required under this Section.) D. Reference Drawings: The Work of this Filed Sub -Bid is shown on the following Contract Drawings: FP1, FP2, FP3, FP4, FP5. 1.2 FIRE PROTECTION SYSTEMS NARRATIVE A. The information contained within the report outlines the basis of design, sequence of operation and testing criteria that is critical to the successful completion of the Work. B. The narrative report may be updated as construction progresses, with a final version submitted for final commissioning of the life safety systems by the local fire department. FIRE SUPPRESSION SPRINKLER SYSTEM 210000-1 School Department Administration Building North Andover, MA MacRitchie Engineering Inc. Janaury 2, 2014 Close coordination between the design team and construction team will be necessary to complete the Fire Protection Systems Narrative Report in accordance with State regulations. 1.3 SUMMARY A. Work shall include, but not be limited to, the following: Provisions for the installation of a first floor wet sprinkler system complete with 100% protection. Provisions for the installation of an attic dry sprinkler system complete with 100% protection. Provisions for connection of a new fire service main, connected to the site main. Provisions for a service backflow preventer. Provisions for a new wet alarm valve assembly. Provisions for a new Dry Pipe Valve Assembly. Provisions for a fire department inlet connection. 8. NOT USED 9. Preparation of hydraulic calculations and shop drawings, in accordance with NFPA 13, sealed by an engineer registered in the Commonwealth of Massachusetts. 10. Firestopping of all rated penetrations. 111. Coordination of all systems and components, installation, support and routing. 1.4 THREE TIER PROJECT PROCESS A. This project shall be designed and constructed under the three tier system, per the Massachusetts building code, 780 CMR, chapter 9. B. TIER ONE, CONSTRUCTION DOCUMENTS 1. Prior to issuance of a building permit, construction documents for the fire protection system must be submitted and a building permit obtained prior to the installation of fire protection systems or modifications, alterations, additions or deletions to an existing fire protection system. The construction documents shall contain conform to all requirements listed in the building code. C. TIER TWO, SHOP DRAWINGS Prior to installation of fire protection systems, shop drawings and hydraulic calculations shall be prepared by the contractor. Drawings and hydraulic calculations shall conform to all requirements listed in the building code. The shop drawings and hydraulic calculations shall then be submitted to the engineer of record. When the engineer of record is satisfied with the drawings and hydraulic calculations, they will be sealed. 3. The contractor shall then submit drawings and hydraulic calculations to the building official and fire official, and obtain approval. FIRE SUPPRESSION SPRINKLER SYSTEM 210000-2 School Department Administration Building MacRitchie Engineering Inc. North Andover, MA Janaury 2, 2014 D. TIER THREE, RECORD DRAWINGS 1. As built plans shall be provided to the building owner for all fire protection and life safety systems that are sealed as reviewed and approved by the engineer of record, performing construction control. 2. Shop drawings shall be modified as necessary, with any field changes identified by clouds on the drawings. 3. When the engineer of record is satisfied with the drawings and hydraulic calculations, they will be sealed. These completed documents will then be incorporated into the operation & maintenance manuals, and delivered to the owner. 1.5 REFERENCES A. American National Standards Institute (ANSI) B. American Society for Testing and Materials (ASTM) C. American Water Works Association (AWWA) D. Underwriter's Laboratories (UL) E. National Fire Protection Association (NFPA) 1. NFPA 13 — Standard for the Installation of Automatic Sprinkler Systems. 2. NFPA 14 - Standard for the Installation of Standpipe and Hose Systems. 3. NFPA 24 - Standard for the Installation of Private Fire Service Mains and Their Appurtenances. 4. NFPA 25 - Standard for the Inspection, Testing, and Maintenance of Water - Based Fire Protection Systems 5. NFPA 72 — National Fire Alarm Code. 6. NFPA 241 — Standard for Safeguarding Construction Alteration and Demolition Operations. 1.6 SUBMITTALS A. The following items require submittal as Product Data. All submittals shall indicate UL listing and the installation and environmental conditions for which the listing and approvals are based. 1. Pipe and fittings. Correspond each group of pipe and fittings to the intended system application. 2. Supports (Hangers) and fasteners. 3. Seismic Restraint Assemblies: include installation drawings. 4. Through Penetration Fire Stops: include UL system number and installation drawing for each penetration type indicating type of construction to be penetrated, diameter of penetration, and sleeve and penetrating pipe material and schedule. 5. System Control valves, general service valves and check valves. 6. Relief valves. FIRE SUPPRESSION SPRINKLER SYSTEM 210000-3 School Department Administration Building North Andover, MA MacRitchie Engineering Inc. Janaury 2, 2014 7. Test and Drain Assembly. 8. Fire service flexible joint assembly. 9. Backflow Preventer. 10. Sprinklers; indicate finish, orifice size, response application, temperature rating and location to be installed. 11. Fire Department Inlet Connection. 12. Alarm Valve; include all trim and accessories. 13. Dry Pipe Valve; include all trim and accessories. 14. Signaling Devices. 15. Electric Bell. 16. Pressure Gauges. 17. Spare Sprinkler Cabinet. 18. Pipe Identification Markers; indicate naming convention to be used. 19. Dry Pipe Valve NOT USED 20. Sleeves and firestopping materials. 21. NOT USED B. The following Shop Drawings shall be submitted 1. Fabrication Plans — Sprinkler system fabrication drawings shall include all information required of Working Plans as specified in NFPA 13. Fabrication plans shall be referred to as Working Plans in this Section. 2. Hydraulic Calculations prepared in accordance with the requirements of NFPA 13 shall accompany the Working Plans. 3. NOT USED 4. NOT USED 5. Seismic Bracing Calculations prepared in accordance with NFPA 13 shall accompany the working plans. C. The following Test Certificates and Reports shall be submitted: 1. Contractor's Material and Test Certificates for Underground Piping prepared in accordance with NFPA 13 Figure 8-1(b). Submit certificate before connecting fire service to above ground piping. 2. Contractor's Material and Test Certificates for Aboveground Piping prepared in accordance with NFPA 13 Figure 8-1(a). 3. NOT USED 1.7 COORDINATION DRAWINGS A. Coordination drawings shall be approved prior to the commencement of any piping or equipment installation. B. Prepare coordination drawings for mechanical and electrical systems and where work by sub -contractors or fabricators require off-site fabrication of production materials that must accurately interface. Coordination drawings shall indicate how work shown by separate shop drawing will interface, and shall indicate sequence of installation. FIRE SUPPRESSION SPRINKLER SYSTEM 210000-4 School Department Administration Building North Andover, MA MacRitchie Engineering Inc. Janaury 2, 2014 C. Each of the following sub -contractors shall indicate their work on a set of mylar transparencies prepared by the Contractor. Coordination drawings shall show the work of all major trades and without excluding the work of any particular trade, and shall include but not be limited to the work of the following trades: HVAC Plumbing Electrical Fire Protection D. Copies of the coordination drawings shall be distributed to each subcontractor and subsequently each trade shall indicate its work and show elevations, sizes, pipe insulation, junction boxes, and fixture sizes. E. Conflicts shall be identified for immediate attention and resolution. Upon resolution of all conflicts, the coordinated drawings shall be signed by all trades and submitted to the Engineer in accordance with Division 01, for review and confirmation of compliance with the Contract Documents. F. Additional work required to accommodate a trade that failed to coordinate his work in a timely manner will be paid for by the subcontractor who failed to coordinate his work. G. Where conflicts occur with placement of materials of various trades, the Contractor will be responsible to coordinate the available space to accommodate all trades. Any resulting adjustments shall be initialed and dated by the specialty trade. The Contractor shall then final date and sign each drawing. H. A Sub -contractor who fails to promptly review and incorporate his work on the drawings shall assume full responsibility of any installation conflicts affecting his work and of any schedule ramifications. Fabrication shall not start until such transparencies of completed coordination drawings are received by the Engineer and have been reviewed. Review of coordination drawings shall not diminish responsibility under this Contract for final coordination of installation and maintenance clearances of all systems and equipment with Architectural, Structural, Process, Mechanical, HVAC, Electrical and other work. K. Coordination Drawings shall include but are not necessarily limited to: 1. Structure 2. Light fixtures 3. Access panels 4. Sheet metal, heating coils, boxes, grilles, diffusers, etc. 5. All heating piping and valves 6. Soil, waste and vent piping 7. Major electrical conduit runs, panelboards, feeder conduit and racks of branch conduit 1.8 FLOW TEST A. Perform a new flow test at the two hydrants closest to the new water service connection to the Town water main. B. Use the results while preparing hydraulic calculations. C. Provide a copy of the test with the shop drawing package. FIRE SUPPRESSION SPRINKLER SYSTEM 210000-5 School Department Administration Building North Andover, MA MacRitchie Engineering Inc. Janaury 2, 2014 D. Provide a copy of the test with the 0&M Manual at project closeout. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Unless otherwise noted, all products shall be listed by Underwriter's Laboratories. B. Supports — B -Line Systems Incorporated, Grinnell Corporation, or Tolco Incorporated. C. Seismic Restraint Assemblies — B -Line Systems Incorporated, Loos and Company Incorporated, or Tolco Incorporated. D. Through Penetration Fire Stops — 3M Fire Protection Products, Hilti Corporation, or Nelson Firestop Products. E. Outside Screw and Yoke Valves, Flanged Check Valves and Non -rising Stem Gate Valves — Nibco Incorporated, Mueller Company, or Stockham Valves and Fittings. F. Butterfly Valves — Grinnell Corporation, Milwaukee Valve Company Incorporated, or Victaulic Company of America. G. Grooved Check Valves — Grinnell Corporation, Victaulic Company of America, or Viking Corporation. H. Test and Drain Assemblies —Viking Manufacturing Incorporated, Grinnell Corporation, or Victaulic Company of America. I. Backflow Preventers — Ames, Watts or Febco . J. Sprinklers — Viking, Reliable or Victaulic. K. Fire Department Valves and Hose Cabinets — Elkhart, Croker or Potter Roemer. L. Alarm Valves — Viking, Reliable or Victaulic. M. Signaling Devices — Gamewell, System Sensor or Potter. 2.2 PIPE AND FITTINGS A. Piping and fittings are described in the following tables. PIPE MATERIAL SPECIFICATION INDEX Service Drawing Designation(s) Pressure Rating (psi) Table Material Wet Sprinkler (New Service) Exterior F, 175 2 Carbon Steel Wet Sprinkler Interior F, SP 175 2 Carbon Steel Sprinkler Drain SPD 175 2 Galvanized Carbon Steel Between FDC & Check Valve FDIC 175 4 Galvanized Carbon Steel Dry Sprinkler DS 175 2 Galvanized Carbon Steel NOT USED FIRE SUPPRESSION SPRINKLER SYSTEM 210000-6 School Department Administration Building North Andover, MA MacRitchie Engineering Inc. Janaury 2, 2014 TABLE 2 — CARBON STEEL PIPING 2" and smaller 2'/" and larger Pipe Schedule 40 conforming to ASTM A53, Schedule 40 or 10 conforming to ASTM A135 or A795 A53, A135 or A795 Fittings Class 125 cast iron conforming to Class 125 cast iron conforming to ANSI/ASME B16.1, class 125 cast iron ANSI/ASME B16.1, class 125 cast iron threaded conforming to ANSI/ASME threaded conforming to ANSI/ASME B16.4, or forged steel socket welded B16.4, or 175 psi (WWP) malleable iron conforming to ASME B16.11 grooved mechanical Joining Methods Thread or shop weld Thread with Schedule 40 pipe, roll groove or shop weld with Schedule 10 pipe. Flanges Class 150 plain face conforming to ANSI B16.5 Gaskets & Bolts Gaskets — Full face rubber 1/8" thick Bolts and Nuts — Conforming to ANSI B18.2.1 and B18.2.2 respectively 2.3 PIPE SUPPORTS A. Components attaching to piping (Hangers) shall be adjustable swivel loop type when supporting piping 2" and smaller. Hangers shall be clevis type when supporting piping 3" and larger. B. Components attaching to structure shall be beam clamp type when attaching to structural steel members. Concrete inserts or anchors shall be used when attaching to structural concrete. C. All components of pipe supports located exterior to the structure including hangers, rods and attachments to structure, shall be galvanized. Nuts and bolts for such supports shall be stainless steel. 2.4 SEISMIC RESTRAINT A. All components of the seismic restraint system shall conform to the NFPA 13 requirements for protection of piping against damage due to earthquakes. B. Sway Bracing 1. Sway bracing system shall be capable of withstanding forces in tension and compression unless specifically listed as a tension only system. 2. Sway bracing assembly components shall be of one manufacturer with the exception of the bracing member in accordance with the assembly listing. 2.5 THROUGH PENETRATION FIRE STOPS A. Penetration fire stops shall conform to the testing requirements of ASTM E 814 with the appropriate 'F' and `T' rating for the wall or floor being penetrated. B. Penetration firestops shall be appropriate for the combination of construction to be penetrated, diameter of penetration and sleeve and penetrating pipe material and schedule. 2.6 VALVES A. Control Valves Outside Screw and Yoke valves for system pressures less than 175 psi shall be rated for 175 psi working water pressure, cast or ductile iron body with interior and exterior epoxy coating, resilient EPDM wedge, flanged ends and pre - grooved rising stem suitable for tamper switch mounting. FIRE SUPPRESSION SPRINKLER SYSTEM 210000-7 School Department Administration Building North Andover, MA MacRitchie Engineering Inc. Janaury 2, 2014 2. Butterfly Valves sized 2 '/" and larger shall be ductile iron body and EPDM disc with grooved ends. Butterfly Valves sized 2" and smaller shall be bronze body with threaded ends and stainless steel EPDM disc. All valves shall have an indicating actuator with a pre -wired integral supervisory switch and a minimum 300 psi working water pressure. B. Check Valves sized 2 '/" and larger shall be swing type cast or ductile iron body with flanged or mechanical ends, rubber -coated disc and shall be rated for 175 or 250 psi working water pressure as appropriate. Check valves sized 2" and smaller shall be bronze body with threaded ends and shall be rated for 175 psi working water pressure. C. Relief Valves shall be fixed setting, 175 psi rated, cast brass body with %" NPT male inlet X 3/" NPT female outlet. D. Test and Drain Valves 1. Test Assemblies shall be combination test and drain assemblies with threaded ends, sight glass, orifice and pressure rating appropriate to system pressures. 2. Globe Valves shall be bronze body, threaded end rated for at least 175 psi. 2.7 BACKFLOW PREVENTERS A. Backflow prevention devices shall be approved by the local water authority. B. Backflow preventer shall be Double Check Valve Assembly type with epoxy -coated cast iron or stainless steel body, test cocks and flanged end resilient wedge OS&Y gate valves. 2.8 SPRINKLERS A. Style: Sprinklers shall be upright as defined in NFPA 13, models are indicated on the Drawings. B. Unless otherwise noted, all sprinklers shall be of one manufacturer. C. Type. 1. Standard sprinklers shall be 1/2" NPT standard spray pattern with glass bulb fusible element. D. Response Application 1. Unless otherwise noted sprinklers shall be UL listed as quick response. E. Temperature Ratings 1. Unless otherwise noted sprinkler temperature ratings shall be in accordance with NFPA 13. 2.9 FIRE DEPARTMENT INLET CONNECTION A. Connection shall be 300 angle storz type hard -coated aluminum body flush mount, with inlet and outlet size as specified on drawings. The inlet of the connection shall be storz and the outlet shall be NPT. Connection shall be provided with cap, chain and lettered escutcheon plate. B. The finish of the inlet connection and associated components shall be aluminum and enameled steel. 2.10 DEVICES A. Wet Alarm Valve (AV) — Alarm check valve rated for 175 psi working water pressure with ductile iron body, aluminum bronze clapper, stainless steel rod and springs and EPDM FIRE SUPPRESSION SPRINKLER SYSTEM 210000-8 School Department Administration Building North Andover, MA MacRitchie Engineering Inc. Janaury 2, 2014 seat seal. Valve shall include standard vertical trim package, retard chamber and alarm pressure switch. 2.11 SIGNALING DEVICES A. All signaling devices shall be UL listed and FM approved for their intended use including outdoor or hazardous areas. B. All signaling devices shall have two sets of SPDT Form C contacts, be enclosed in NEMA 4 enclosures and have a listed pressure rating of at least 250 psi. C. Waterflow switches shall be vane type with a 10 gpm minimum alarm flow and adjustable pneumatic retard of 0-90 seconds. D. Pressure switches shall have two independently operating set of contacts, each adjustable over a pressure range of 10-175 psi. 2.12 ACCESSORIES A. Electric Bells shall be 24 VDC, 6"diameter with output decibel ratings as specified in UL 464. Bell shall include weatherproof backbox for outdoor applications. B. Pressure Gauges shall be Bourdon tube -type, at least 4" in diameter, with black figures on white background. Gauges for air pressure service shall include a retard feature. C. Spare Sprinkler Cabinet shall be factory assembled for the purpose of storing spare sprinklers with steel construction with red epoxy coating on all surfaces. Cabinet shall be sized to accommodate the appropriate number of spare sprinklers and wrenches as indicated by NFPA 13. D. Pipe Identification Labels shall be snap -on laminated plastic with acrylic coating and utilize black lettering on a red background. Lettering size and style shall be in accordance with the ANSI A13.1. 2.13 NOT USED PART 3 - EXECUTION 3.1 PREPARATION A. Perform hydrant flow tests in accordance with NFPA 291 for use with hydraulic calculations. 3.2 PIPE SIZING A. Feed mains 1. As part of the work, confirm the pipe sizing shown on the drawings with hydraulic calculations using the Hazen -Williams correlation in accordance with NFPA 13. 2. The calculations shall confirm that the design criteria can be met with a minimum 10 psi "safety factor". B. Sprinkler piping 1. Sprinkler mains including the floor control valve assembly shall be no smaller than as indicated on the drawings. FIRE SUPPRESSION SPRINKLER SYSTEM 210000-9 School Department Administration Building North Andover, MA MacRitchie Engineering Inc. Janaury 2, 2014 2. As part of the work, sprinkler branch piping shall be sized based upon hydraulic calculations using the Hazen -Williams correlation in accordance with NFPA 13. 3. As part of the work, sprinkler piping downstream of and including floor control valve assemblies shall be sized based upon hydraulic calculations using the Hazen -Williams correlation in accordance with NFPA 13. 4. Pipe sizing shall be based upon hydraulic calculations for each design criteria shown on the drawings. 5. Pipe sizing shall be such that the system demand can be met with a minimum 10 psi "safety factor". 6. An outside hose stream allowance of 250 shall be added at the connection to the city main. 7. Velocity in sprinkler piping shall not exceed 21 feet per second. C. General Do not perform pipe sizing calculations prior to submitting water supply flow test results for review. 3.3 PIPE AND FITTINGS A. Applications 1. Piping between fire department inlet connection and check valve shall consist of galvanized schedule 10 black carbon steel rolled groove pipe with galvanized mechanical grooved fittings and couplings. 2. Welded outlets shall be permitted on sprinkler mains and branches. 3. Sprinkler drain piping shall be assembled as Sprinkler. 4. Provide flanges and flanged fittings of appropriate duty at valves and equipment as necessary. 3.4 GENERAL SYSTEM A. Beam Clamps - Install all beam clamps with retaining straps. B. Fire Stopping - Provide through penetration fire stops in accordance with local building code requirements at pipe penetrations through rated walls, floors and assemblies. C. Watertight Penetrations 1. In general, exterior wall and floor penetrations shall be required to be watertight. Coordinate with other sections for other locations that may require special penetration requirements, such as roof assemblies. 2. Unless specified otherwise in other Sections, watertight penetrations shall consist of a sleeve (extending 2 inches above finish floor), watertight sealant continuous around the circumference of the sleeve at the sleeve/slab interface, and mechanical link assembly filling the annular space between the penetrating pipe and sleeve. 3. Where penetrations are required to be both watertight and fire rated, the combined assembly shall be in agreement with the UL listing and FM approval of the through penetration fire stop to be used. D. Gauges and Pressure Switches - Install with isolation valves to allow for removal of device without interrupting water supply to system. Supervise valves as indicated on drawings. FIRE SUPPRESSION SPRINKLER SYSTEM 210000-10 School Department Administration Building MacRitchie Engineering Inc. North Andover, MA Janaury 2, 2014 E. Drain Valves - Install main and auxiliary drain valves on system low points of appropriate type and size in accordance with NFPA 13. 3.5 SEISMIC RESTRAINT ASSEMBLIES A. Install seismic restraint systems in accordance with the NFPA 13 requirements for Protection of Piping against Damage due to Earthquakes. B. Install seismic separation assemblies in accordance with NFPA 13 where piping crosses building seismic joints. 3.6 ADJUSTING OF VALVES A. Install all valves in locations that are readily accessible. Install system control valves in areas that allow for safe fire department access during emergency conditions. B. Provide all valves with permanent tags that indicate the valve -number and function. C. Install indicating valves such that indicator is clearly visible from the floor level below. 3.7 BACKFLOW PREVENTERS A. Install backflow preventers in accordance with local Water Authority regulations. 3.8 SPRINKLERS A. Applications Areas open to structure: Pendent or upright standard sprinklers with standard brass finish. B. Install sprinklers such that cover plate or escutcheon is flush against gypsum or acoustical tile as recommended by manufacturer. Correct sprinklers that are not flush by adjusting them in accordance with the manufacturer's instructions and/or re -installing affected portions of the wall or ceiling assembly if required. C. Install sprinklers in accordance with the requirements of NFPA 13 regarding obstructions to sprinkler discharge. All obstructions such as ductwork, piping, lighting, cable trays, floating ornamental ceilings, etc. shall be considered. Adjust sprinkler locations and/or add sprinklers as necessary if obstructions are installed after the installation of the sprinklers and cannot be relocated to accommodate the sprinklers. , D. Provide and install guards on sprinklers susceptible to mechanical damage. E. Provide and install baffles to prevent cold soldering of intermediate level sprinklers. 3.9 FIRE DEPARTMENT INLET CONNECTIONS A. Install an automatic ball drip valve such that piping between the fire department inlet connection and check valve is able to completely drain automatically. Discharge of ball drip shall be piped through exterior wall or an appropriate drain receptacle. B. Review the exact location and mounting height of all connections with a representative of the responding Fire Department. Promptly report in writing any significant adjustments to inlet locations requested by the official. 3.10 SIGNALING DEVICES A. Adjust the retard setting of flow switches to 45 seconds. B. Adjust the alarm setting of pressure switches to 10 psi below normal static water pressure. C. Adjust the alarm settings of hi/low pressure switches to 10 psi above and below normal system air pressure. FIRE SUPPRESSION SPRINKLER SYSTEM 210000-11 School Department Administration Building North Andover, MA MacRitchie Engineering Inc. Janaury 2, 2014 3.11 COORDINATION WITH FIRE ALARM A. Coordinate the interface of all supervisory, alarm and operation functions associated with the sprinkler/standpipe systems described in this Section to the extent that all signals are received and processed as is intended by NFPA 72. B. Coordinate this portion of work with the fire alarm work to successfully complete all testing required by NFPA 13 and 72. C. Promptly report conflicts with the Fire Alarm portion of work as they arise during installation. 3.12 PIPE IDENTIFICATION A. Apply pipe identification markers in accordance with ANSI A13.1. 3.13 TESTING A. Schedule testing with a representative of the Owner and Authorities Having Jurisdiction. Tests shall be performed in a manner deemed satisfactory by the Owner and Authorities B. Replace components that do not pass tests and reschedule tests procedures to demonstrate compliance. C. Perform the following tests in accordance with NFPA 13. 1. Flush sprinkler piping. 2. Hydrostatically test sprinkler piping. 3. Test operation of waterflow detection devices. 4. Main drain flow test. 5. Test operation of control valves. 6. Test pressure -regulating devices. 7. Test operation of the backflow prevention device. D. Perform the following tests in accordance with NFPA 24. 1. Hydrostatic testing of the water service piping shall be in accordance with the above referenced standard. 3.14 CONTRACT CLOSEOUT A. Provide in accordance with Division 01 — Contract Closeout. END OF SECTION 210000 FIRE SUPPRESSION SPRINKLER SYSTEM 210000-12 School Department Administration Building North Andover, MA PART 1 - GENERAL 1.1 SUMMARY MacRitchie Engineering Inc. January 16, 2014 DIVISION 23 - HVAC Filed Sub -bid Required SECTION 23.09.93 SEQUENCE OF OPERATIONS FOR HVAC CONTROLS A. This Section includes control sequences for HVAC systems, subsystems, and equipment. B. See Division 23 Section "Instrumentation and Control for HVAC' and Division 23 Section "Energy Management System" for control equipment and devices and for submittal requirements. 1.2 HEATING CONTROL SEQUENCES A. Heating -Water Supply Temperature Reset: 1. Input Device: Outdoor -air sensor. 2. Output Device: DDC system software. 3. Action: Reset heating -water supply temperature in straight-line relationship with outdoor - air temperature for the following conditions: a. 140 def F heating water when outdoor -air temperature is 0 deg F. b. 90 deg F heating water when outdoor -air temperature is 75 deg F. 4. Display: a. Outdoor -air temperature. b. Heating -water supply temperature. C. Heating -water supply temperature set point. B. Control Primary Circulating Pump(s): 1. Input Device: DDC system. 2. Output Device: DDC system command to starter relay. 3. Action: Energize pump(s) at outdoor -air temperatures below 65 deg F. 4. Display: a. Outdoor -air temperature. b. Operating status of primary circulating pump(s). 1.3 AIR -HANDLING -UNIT CONTROL SEQUENCES A. Start and Stop Supply Fan(s): 1. Enable: Freeze Protection: SEQUENCE OF OPERATIONS FOR HVAC CONTROLS 23.09.93-1 School Department Administration Building MacRitchie Engineering Inc. North Andover, MA January 16, 2014 a. Input Device: Duct -mounted averaging element thermostat, located before supply fan. b. Output Device: Hard wired through motor starter; DDC system alarm. C. Action: Allow start if duct temperature is above 37 deg F; signal alarm if fan fails to start as commanded. 2. Enable: High -Temperature Protection: a. Input Device: Duct -mounted thermostat, located in return air. b. Output Device: Hard wired through motor starter; DDC system alarm. C. Action: Allow start if duct temperature is below 300 deg F. 3. Enable: Smoke Control: a. Input Device: Duct -mounted smoke detector, located in return air. b. Output Device: Hard wired through motor starter; DDC system alarm. C. Action: Allow start if duct is free of products of combustion. 4. Initiate: Occupied Time Schedule: a. Input Device: DDC system time schedule. b. Output Device: Binary output to motor starter. C. Action: Energize fan(s). 5. Initiate: Unoccupied Time Schedule: a. Input Device: DDC system demand. b. Output Device: Binary output to motor starter. C. Action: Energize fan(s). 6. Unoccupied Ventilation: a. Input Device: DDC system time schedule and output. b. Output Device: DDC system binary output to motor starter. C. Action: Cycle fan(s) during unoccupied periods. 7. Display: Supply -fan on-off indication. B. Supply Fan(s) Variable -Volume Control: 1. Occupied Time Schedule: a. Input Device: DDC system time schedule. b. Output Device: Binary output. C. Action: Enable control. 2. Volume Control: a. Input Device: Static -pressure transmitter sensing supply -duct static pressure referenced to conditioned -space static pressure. b. Output Device: DDC system analog output to motor speed controller. Set variable -speed drive to minimum speed when fan is stopped. C. Action: Maintain constant supply -duct static pressure. 3. High Pressure: SEQUENCE OF OPERATIONS FOR HVAC CONTROLS 23.09.93-2 School Department Administration Building North Andover, MA MacRitchie Engineering Inc. January 16, 2014 a. Input Device: Static -pressure transmitter sensing supply -duct static pressure referenced to static pressure outside the duct. b. Output Device: DDC system binary output to motor starter. C. Action: Stop fan and signal alarm when static pressure rises above excessive - static -pressure set point. 4. Display: a. Supply -fan -discharge static -pressure indication. b. Supply -fan -discharge static -pressure set point. C. Supply -fan airflow rate. d. Supply -fan speed. C. Start and Stop Return Fan(s): 1. Initiate: Occupied Time Schedule: a. Input Device: DDC system time schedule. b. Output Device: Binary output to motor starter. C. Action: Energize fans when supply fans are energized. 2. Initiate: Unoccupied Time Schedule: a. Input Device: DDC system demand. b. Output Device: Binary output to motor starter. G. Action: Energize fans when supply fans are energized. 3. Unoccupied Ventilation: a. Input Device: DDC system time schedule and output. b. Output Device: DDC system binary output to motor starter. C. Action: Cycle fan(s) during unoccupied periods. 4. Display: Return -fan on-off indication. D. Return Fan(s) Variable -Volume Control: 1. Occupied Time Schedule: a. Input Device: DDC system time schedule. b. Output Device: Binary output. C. Action: Enable control. 2. Volume Control: a. Input Device: Static -pressure transmitter sensing building static pressure referenced to outdoor static pressure. b. Output Device: DDC system analog output to motor speed controller. Set variable -speed drive to minimum speed when fan is stopped. C. Action: Maintain constant building static pressure. 3. Display: a. Return -air static -pressure indication. b. Return -air static -pressure set point. SEQUENCE OF OPERATIONS FOR HVAC CONTROLS 23.09.93-3 4 School Department Administration Building North Andover, MA C. Return -fan airflow rate. d. Return -fan speed. e. Building static -pressure indication. f. Building static -pressure set point. E. Mixed -Air Control: 1. Occupied Time Schedule: a. Input Device: DDC system time schedule. b. Output Device: DDC system output. C. Action: Enable control. 2. Minimum Position: MacRitchie Engineering Inc. January 16, 2014 a. Input Device: DDC system time schedule. b. Output Device: DDC system analog output to modulating damper actuator(s). C. Action: Open outdoor -air dampers to minimum position. 3. Heating Reset: a. Input Device: DDC system software. b. Output Device: DDC system analog output to modulating damper actuator(s). C. Action: Set outdoor -air dampers to minimum position. 4. Supply -Air Temperature: a. Input Device: Electronic temperature sensor. b. Output Device: DDC system analog output to modulating damper actuator(s). C. Action: Modulate outdoor-, return-, and relief -air dampers to maintain air temperature set point of 55 deg F. 5. Cooling Reset: a. Input Device: Outdoor- and return -air, duct -mounted electronic temperature sensors. b. Output Device: DDC system analog output to damper actuator(s). C. Action: Set outdoor -air dampers to minimum position when outdoor -air enthalpy exceeds return -air enthalpy. 6. Unoccupied Time Schedule: a. Input Device: DDC system time schedule. b. Output Device: DDC system analog output to modulating damper actuator(s). C. Action: Position outdoor- and relief -air dampers closed and return -air dampers open. 7. Display: a. Mixed -air -temperature indication. b. Mixed -air -temperature set point. C. Mixed -air damper position. F. Filters: During occupied periods, when fan is running, differential air -pressure transmitters exist. SEQUENCE OF OPERATIONS FOR HVAC CONTROLS 23.09.93-4 School Department Administration Building North Andover, MA Occupied Time Schedule: a. Input Device: DDC system time schedule. b. Output Device: DDC system output. C. Action: Enable control. 2. Differential Pressure: MacRitchie Engineering Inc. January 16, 2014 a. Input Device: Pressure transmitter. b. Output Device: DDC system alarm. C. Action: Signal alarm on low- and high-pressure conditions. Display: a. Filter air -pressure -drop indication. b. Filter low -air -pressure set point. C. Filter high -air -pressure set point. G. Coordination of Air -Handling Unit Sequences: Ensure that preheat, mixed -air, heating -coil, and cooling -coil controls have common inputs and do not overlap in function. H. Operator Station Display: Indicate the following on operator workstation display terminal: 1. DDC system graphic. 2. DDC system on-off indication. 3. DDC system occupied/unoccupied mode. 4. Outdoor -air -temperature indication. 5. Supply -fan on-off indication. 6. Supply -fan -discharge static -pressure indication. 7. Supply -fan -discharge static -pressure set point. 8. Supply -fan airflow rate. 9. Supply -fan speed. 10. Return -fan on-off indication. 11. Return -air static -pressure indication. 12. Return -air static -pressure set point. 13. Return -fan airflow rate. 14. Return -fan speed. 15. Building static -pressure indication. 16. Building static -pressure set point. 17. Mixed -air -temperature indication. 18. Mixed -air -temperature set point. 19. Mixed -air damper position. 20. Relative humidity indication. 21. Relative humidity set point. 22. Relative humidity control -valve position. 23. Filter air -pressure -drop indication. 24. Filter low -air -pressure set point. 25. Filter high -air -pressure set point. 26. Fan -discharge air -temperature indication. 27. Fan -discharge air -temperature set point. 28. Cooling -coil air -temperature indication. 29. Cooling -coil air -temperature set point. 30. Cooling -coil control -valve position. 31. Room temperature indication. 32. Room temperature set point. SEQUENCE OF OPERATIONS FOR HVAC CONTROLS 23.09.93-5 School Department Administration Building MacRitchie Engineering Inc. North Andover, MA January 16, 2014 1.4 TERMINAL UNIT OPERATING SEQUENCE A. Cabinet Unit Heater, Hydronic: 1. Room Temperature: a. Input Device: Electronic temperature sensor. b. Output Device: DDC system binary output. C. Action: Cycle fan to maintain temperature. 2. Low -Temperature Safety: a. Input Device: Line -voltage, on-off thermostat, pipe mounted. b. Output Device: Hard wired. C. Action: Stop fan when return heating -water temperature falls below 35 deg F. 3. Display: a. Room temperature indication. b. Room temperature set point. B. Unit Heater, Hydronic: 1. Room Temperature: a. Input Device: Electronic temperature sensor. b. Output Device: DDC system binary output. C. Action: Cycle fan to maintain temperature. 2. Low -Temperature Safety: a. Input Device: Line -voltage, on-off thermostat, pipe mounted. b. Output Device: Hard wired. C. Action: Stop fan when return heating -water temperature falls below 35 deg F. 3. Display: a. Room temperature indication. b. Room temperature set point. C. Heating Coils, Hydronic: 1. Room Temperature: a. Input Device: Electronic temperature sensor. b. Output Device: Electronic control -valve operators. C. Action: Modulate valve to maintain temperature. 2. Display: a. Room temperature indication. b. Room temperature set point. C. Control -valve position. D. VAV, Terminal Air Units with Hydronic Coils: SEQUENCE OF OPERATIONS FOR HVAC CONTROLS 23.09.93-6 School Department Administration Building North Andover, MA MacRitchie Engineering Inc. January 16, 2014 1. Occupancy: a. Input Device: Occupancy sensor. b. Output Device: DDC system binary output. C. Action: Report occupancy and enable occupied temperature set point. 1) Occupied Temperature: 75 deg F. 2) Unoccupied Temperature: 65 deg F. 2. Room Temperature: a. Input Device: Room thermostat. b. Output Device: Electronic damper actuators and control -valve operators. C. Action: Modulate damper and valve to maintain temperature. 1) Sequence damper from full open to minimum position, then valve from closed to fully open. 3. Display a. Room/area served. b. Room occupied/unoccupied. C. Room temperature indication. d. Room temperature set point. e. Room temperature set point, occupied. f. Room temperature set point, unoccupied. g. Air -damper position as percent open. h. Control -valve position as percent open. 1.5 VENTILATION SEQUENCES A. Exhaust Fan [EF -1, EF -2, EF -3]: Interlock with light switch cycles fan. B. Exhaust Fan [EF -4]: Room thermostat cycles fan. 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