Volume 2 SEYMOUR TOWN BUILDING RENOVATIONS PROJECT MANUAL. LIBRARY 46 Church Street Seymour, CT 06483

Transcription

1 PROJECT MANUAL SEYMOUR TOWN BUILDING RENOVATIONS TOWN HALL One First Street Seymour, CT LIBRARY 46 Church Street Seymour, CT POLICE STATION 11 Franklin Street Seymour, CT Architect Ames & Whitaker Architects, PC 31 Liberty Street, Suite 208 Southington, CT Civil/Structural/Mechanical/Electrical Loureiro Engineering Associates, Inc. 100 Northwest Drive Plainville, CT Volume 2 Project No. Date: February 8, 2018

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3 SECTION HVAC AIR-DISTRIBUTION SYSTEM CLEANING PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section includes cleaning HVAC air-distribution equipment, ducts, plenums, and system components. 1.3 DEFINITIONS A. ASCS: Air systems cleaning specialist. B. NADCA: National Air Duct Cleaners Association. 1.4 INFORMATIONAL SUBMITTALS A. Qualification Data: For an ASCS. B. Strategies and procedures plan. C. Cleanliness verification report. 1.5 QUALITY ASSURANCE A. ASCS Qualifications: A certified member of NADCA. 1. Certification: Employ an ASCS certified by NADCA on a full-time basis. 2. Supervisor Qualifications: Certified as an ASCS by NADCA. B. UL Compliance: Comply with UL 181 and UL 181A for fibrous-glass ducts. C. Cleaning Conference: Conduct conference at Project site. 1. Review methods and procedures related to HVAC air-distribution system cleaning including, but not limited to, review of the cleaning strategies and procedures plan. HVAC AIR-DISTRIBUTION SYSTEM CLEANING

4 PART 2 - PRODUCTS (Not Used) PART 3 - EXECUTION 3.1 EXAMINATION A. Examine HVAC air-distribution equipment, ducts, plenums, and system components to determine appropriate methods, tools, and equipment required for performance of the Work. B. Perform "Project Evaluation and Recommendation" according to NADCA ACR C. Prepare written report listing conditions detrimental to performance of the Work. D. Proceed with work only after unsatisfactory conditions have been corrected. 3.2 PREPARATION A. Prepare a written plan that includes strategies and step-by-step procedures. At a minimum, include the following: 1. Supervisor contact information. 2. Work schedule including location, times, and impact on occupied areas. 3. Methods and materials planned for each HVAC component type. 4. Required support from other trades. 5. Equipment and material storage requirements. 6. Exhaust equipment setup locations. B. Use the existing service openings, as required for proper cleaning, at various points of the HVAC system for physical and mechanical entry and for inspection. C. Comply with NADCA ACR 2006, "Guidelines for Constructing Service Openings in HVAC Systems" Section. 3.3 CLEANING A. Comply with NADCA ACR B. Remove visible surface contaminants and deposits from within the HVAC system. C. Systems and Components to Be Cleaned: 1. Air devices for supply and return air. 2. Ductwork: a. Supply-air ducts, including turning vanes, to the air-handling unit. b. Return-air ducts to the air-handling unit. c. Exhaust-air ducts. d. Outside air ducts. HVAC AIR-DISTRIBUTION SYSTEM CLEANING

5 3. Air-Handling Units: a. Interior surfaces of the unit casing. b. Coil surfaces compartment. c. Condensate drain pans. d. Fans, fan blades, and fan housings. 4. Filters and filter housings. D. Collect debris removed during cleaning. Ensure that debris is not dispersed outside the HVAC system during the cleaning process. E. Particulate Collection: 1. For particulate collection equipment, include adequate filtration to contain debris removed. Locate equipment downwind and away from all air intakes and other points of entry into the building. 2. HEPA filtration with percent collection efficiency for particles sized 0.3 micrometer or larger shall be used where the particulate collection equipment is exhausting inside the building, F. Control odors and mist vapors during the cleaning and restoration process. G. Mark the position of manual volume dampers and air-directional mechanical devices inside the system prior to cleaning. Restore them to their marked position on completion of cleaning. H. System components shall be cleaned so that all HVAC system components are visibly clean. On completion, all components must be returned to those settings recorded just prior to cleaning operations. I. Clean all air-distribution devices, registers, grilles, and diffusers. J. Clean visible surface contamination deposits according to NADCA ACR 2006 and the following: 1. Clean air-handling units, airstream surfaces, components, condensate collectors, and drains. 2. Ensure that a suitable operative drainage system is in place prior to beginning wash-down procedures. 3. Clean evaporator coils, reheat coils, and other airstream components. K. Duct Systems: 1. Create service openings in the HVAC system as necessary to accommodate cleaning. 2. Mechanically clean duct systems specified to remove all visible contaminants so that the systems are capable of passing the HVAC System Cleanliness Tests (see NADCA ACR 2006). L. Debris removed from the HVAC system shall be disposed of according to applicable Federal, state, and local requirements. HVAC AIR-DISTRIBUTION SYSTEM CLEANING

6 M. Mechanical Cleaning Methodology: 1. Source-Removal Cleaning Methods: The HVAC system shall be cleaned using sourceremoval mechanical cleaning methods designed to extract contaminants from within the HVAC system and to safely remove these contaminants from the facility. No cleaning method, or combination of methods, shall be used that could potentially damage components of the HVAC system or negatively alter the integrity of the system. a. Use continuously operating vacuum-collection devices to keep each section being cleaned under negative pressure. b. Cleaning methods that require mechanical agitation devices to dislodge debris that is adhered to interior surfaces of HVAC system components shall be equipped to safely remove these devices. Cleaning methods shall not damage the integrity of HVAC system components or damage porous surface materials such as duct and plenum liners. 2. Cleaning Mineral-Fiber Insulation Components: N. Coil Cleaning: a. Fibrous-glass thermal or acoustical insulation elements present in equipment or ductwork shall be thoroughly cleaned with HEPA vacuuming equipment while the HVAC system is under constant negative pressure and shall not be permitted to get wet according to NADCA ACR b. Cleaning methods used shall not cause damage to fibrous-glass components and will render the system capable of passing the HVAC System Cleanliness Tests (see NADCA ACR 2006). c. Fibrous materials that become wet shall be discarded and replaced. 1. Measure static-pressure differential across each coil. 2. See NADCA ACR 2006, "Coil Surface Cleaning" Section. Type 1, or Type 1 and Type 2, cleaning methods shall be used to render the coil visibly clean and capable of passing Coil Cleaning Verification (see applicable NADCA ACR 2006). 3. Coil drain pans shall be subject to NADCA ACR 2006, "Non-Porous Surfaces Cleaning Verification." Ensure that condensate drain pans are operational. 4. Electric-resistance coils shall be de-energized, locked out, and tagged before cleaning. 5. Cleaning methods shall not cause any appreciable damage to, cause displacement of, inhibit heat transfer, or cause erosion of the coil surface or fins, and shall comply with coil manufacturer's written recommendations when available. 6. Rinse thoroughly with clean water to remove any latent residues. O. Antimicrobial Agents and Coatings: 1. Apply antimicrobial agents and coatings if active fungal growth is reasonably suspected or where unacceptable levels of fungal contamination have been verified. Apply antimicrobial agents and coatings according to manufacturer's written recommendations and EPA registration listing after the removal of surface deposits and debris. 2. When used, antimicrobial treatments and coatings shall be applied after the system is rendered clean. 3. Apply antimicrobial agents and coatings directly onto surfaces of interior ductwork. HVAC AIR-DISTRIBUTION SYSTEM CLEANING

7 4. Sanitizing agent products shall be registered by the EPA as specifically intended for use in HVAC systems and ductwork. 3.4 CLEANLINESS VERIFICATION A. Verify cleanliness according to NADCA ACR 2006, "Verification of HVAC System Cleanliness" Section. B. Verify HVAC system cleanliness after mechanical cleaning and before applying any treatment or introducing any treatment-related substance to the HVAC system, including biocidal agents and coatings. C. Perform visual inspection for cleanliness. If no contaminants are evident through visual inspection, the HVAC system shall be considered clean. If visible contaminants are evident through visual inspection, those portions of the system where contaminants are visible shall be re-cleaned and subjected to re-inspection for cleanliness. D. Additional Verification: 1. Perform surface comparison testing or NADCA vacuum test. 2. Conduct NADCA vacuum gravimetric test analysis for nonporous surfaces. E. Verification of Coil Cleaning: 1. Measure static-pressure differential across each coil. 2. Coil will be considered clean if the coil is free of foreign matter and chemical residue, based on a thorough visual inspection. F. Prepare a written cleanliness verification report. At a minimum, include the following: 1. Written documentation of the success of the cleaning. 2. Site inspection reports, initialed by supervisor, including notation on areas of inspection, as verified through visual inspection. 3. Surface comparison test results if required. 4. Gravimetric analysis (nonporous surfaces only). 5. System areas found to be damaged. G. Photographic Documentation: Comply with requirements in Section "Photographic Documentation." 3.5 RESTORATION A. Restore and repair HVAC air-distribution equipment, ducts, plenums, and components according to NADCA ACR 2006, "Restoration and Repair of Mechanical Systems" Section. B. Restore service openings capable of future reopening. Comply with requirements in Section "Metal Ducts." Include location of service openings in Project closeout report. HVAC AIR-DISTRIBUTION SYSTEM CLEANING

8 C. Replace fibrous-glass materials that cannot be restored by cleaning or resurfacing. Comply with requirements in Section "Metal Ducts". D. Replace damaged insulation according to Section "Duct Insulation." E. Ensure that closures do not hinder or alter airflow. F. New closure materials, including insulation, shall match opened materials and shall have removable closure panels fitted with gaskets and fasteners. END OF SECTION HVAC AIR-DISTRIBUTION SYSTEM CLEANING

9 SECTION COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section includes general requirements for single-phase and polyphase, general-purpose, horizontal, small and medium, squirrel-cage induction motors for use on ac power systems up to 600 V and installed at equipment manufacturer's factory or shipped separately by equipment manufacturer for field installation. 1.3 COORDINATION A. Coordinate features of motors, installed units, and accessory devices to be compatible with the following: 1. Motor controllers. 2. Torque, speed, and horsepower requirements of the load. 3. Ratings and characteristics of supply circuit and required control sequence. 4. Ambient and environmental conditions of installation location. PART 2 - PRODUCTS 2.1 GENERAL MOTOR REQUIREMENTS A. Comply with NEMA MG 1 unless otherwise indicated. B. Comply with IEEE 841 for severe-duty motors. 2.2 MOTOR CHARACTERISTICS A. Duty: Continuous duty at ambient temperature of 40 deg C and at altitude of 3300 feet (1000 m) above sea level. B. Capacity and Torque Characteristics: Sufficient to start, accelerate, and operate connected loads at designated speeds, at installed altitude and environment, with indicated operating sequence, and without exceeding nameplate ratings or considering service factor. COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

10 2.3 POLYPHASE MOTORS A. Description: NEMA MG 1, Design B, medium induction motor. B. Efficiency: Energy efficient, as defined in NEMA MG 1. C. Service Factor: D. Multispeed Motors: Variable torque. 1. For motors with 2:1 speed ratio, consequent pole, single winding. 2. For motors with other than 2:1 speed ratio, separate winding for each speed. E. Multispeed Motors: Separate winding for each speed. F. Rotor: Random-wound, squirrel cage. G. Bearings: Regreasable, shielded, antifriction ball bearings suitable for radial and thrust loading. H. Temperature Rise: Match insulation rating. I. Insulation: Class F. J. Code Letter Designation: 1. Motors 15 HP and Larger: NEMA starting Code F or Code G. 2. Motors Smaller than 15 HP: Manufacturer's standard starting characteristic. K. Enclosure Material: Cast iron for motor frame sizes 324T and larger; rolled steel for motor frame sizes smaller than 324T. 2.4 POLYPHASE MOTORS WITH ADDITIONAL REQUIREMENTS A. Motors Used with Reduced-Voltage and Multispeed Controllers: Match wiring connection requirements for controller with required motor leads. Provide terminals in motor terminal box, suited to control method. B. Motors Used with Variable Frequency Controllers: Ratings, characteristics, and features coordinated with and approved by controller manufacturer. 1. Windings: Copper magnet wire with moisture-resistant insulation varnish, designed and tested to resist transient spikes, high frequencies, and short time rise pulses produced by pulse-width modulated inverters. 2. Energy- and Premium-Efficient Motors: Class B temperature rise; Class F insulation. 3. Inverter-Duty Motors: Class F temperature rise; Class H insulation. 4. Thermal Protection: Comply with NEMA MG 1 requirements for thermally protected motors. C. Severe-Duty Motors: Comply with IEEE 841, with 1.15 minimum service factor. COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

11 2.5 SINGLE-PHASE MOTORS A. Motors larger than 1/20 hp shall be one of the following, to suit starting torque and requirements of specific motor application: 1. Permanent-split capacitor. 2. Split phase. 3. Capacitor start, inductor run. 4. Capacitor start, capacitor run. B. Multispeed Motors: Variable-torque, permanent-split-capacitor type. C. Bearings: Prelubricated, antifriction ball bearings or sleeve bearings suitable for radial and thrust loading. D. Motors 1/20 HP and Smaller: Shaded-pole type. E. Thermal Protection: Internal protection to automatically open power supply circuit to motor when winding temperature exceeds a safe value calibrated to temperature rating of motor insulation. Thermal-protection device shall automatically reset when motor temperature returns to normal range. PART 3 - EXECUTION (Not Applicable) END OF SECTION COMMON MOTOR REQUIREMENTS FOR HVAC EQUIPMENT

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13 SECTION ESCUTCHEONS FOR HVAC PIPING PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Escutcheons. 2. Floor plates. 1.3 ACTION SUBMITTALS A. Product Data: For each type of product indicated. PART 2 - PRODUCTS 2.1 ESCUTCHEONS A. One-Piece, Cast-Brass Type: With polished, chrome-plated finish and setscrew fastener. B. One-Piece, Deep-Pattern Type: Deep-drawn, box-shaped brass with chrome-plated finish and spring-clip fasteners. C. One-Piece, Stamped-Steel Type: With chrome-plated finish and spring-clip fasteners. D. Split-Casting Brass Type: With polished, chrome-plated finish and with concealed hinge and setscrew. E. Split-Plate, Stamped-Steel Type: With chrome-plated finish, concealed and exposed-rivet hinge, and spring-clip fasteners. 2.2 FLOOR PLATES A. One-Piece Floor Plates: Cast-iron flange with holes for fasteners. B. Split-Casting Floor Plates: Cast brass with concealed hinge. ESCUTCHEONS FOR HVAC PIPING

14 PART 3 - EXECUTION 3.1 INSTALLATION A. Install escutcheons for piping penetrations of walls, ceilings, and finished floors. B. Install escutcheons with ID to closely fit around pipe, tube, and insulation of piping and with OD that completely covers opening. 1. Escutcheons for New Piping: a. Piping with Fitting or Sleeve Protruding from Wall: One-piece, deep-pattern type. b. Insulated Piping: One-piece, stamped-steel type or split-plate, stamped-steel type with concealed hinge or split-plate, stamped-steel type with exposed-rivet hinge. c. Bare Piping at Wall and Floor Penetrations in Finished Spaces: One-piece, castbrass or split-casting brass type with polished, chrome-plated finish. d. Bare Piping at Ceiling Penetrations in Finished Spaces: One-piece, cast-brass or split-casting brass type with polished, chrome-plated finish. e. Bare Piping at Ceiling Penetrations in Finished Spaces: One-piece, stamped-steel type or split-plate, stamped-steel type with concealed hinge or split-plate, stampedsteel type with exposed-rivet hinge. f. Bare Piping in Equipment Rooms: One-piece, cast-brass or split-casting brass type with polished, chrome-plated finish. g. Bare Piping in Equipment Rooms: One-piece, stamped-steel type or split-plate, stamped-steel type with concealed hinge or split-plate, stamped-steel type with exposed-rivet hinge. C. Install floor plates for piping penetrations of equipment-room floors. D. Install floor plates with ID to closely fit around pipe, tube, and insulation of piping and with OD that completely covers opening. 1. New Piping: One-piece, floor-plate type. 2. Existing Piping: Split-casting, floor-plate type. 3.2 FIELD QUALITY CONTROL A. Replace broken and damaged escutcheons and floor plates using new materials. END OF SECTION ESCUTCHEONS FOR HVAC PIPING

15 SECTION BALL VALVES FOR HVAC PIPING PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Bronze ball valves. 1.3 DEFINITIONS A. CWP: Cold working pressure. B. SWP: Steam working pressure. 1.4 ACTION SUBMITTALS A. Product Data: For each type of valve. 1.5 DELIVERY, STORAGE, AND HANDLING A. Prepare valves for shipping as follows: 1. Protect internal parts against rust and corrosion. 2. Protect threads, flange faces, and weld ends. 3. Set ball valves open to minimize exposure of functional surfaces. B. Use the following precautions during storage: 1. Maintain valve end protection. 2. Store valves indoors and maintain at higher-than-ambient-dew-point temperature. If outdoor storage is necessary, store valves off the ground in watertight enclosures. BALL VALVES FOR HVAC PIPING

16 PART 2 - PRODUCTS 2.1 GENERAL REQUIREMENTS FOR VALVES A. Source Limitations for Valves: Obtain each type of valve from single source from single manufacturer. B. ASME Compliance: 1. ASME B for threads for threaded-end valves. 2. ASME B16.18 for solder-joint connections. 3. ASME B31.1 for power piping valves. 4. ASME B31.9 for building services piping valves. C. Bronze valves shall be made with dezincification-resistant materials. Bronze valves made with copper alloy (brass) containing more than 15 percent zinc are not permitted. D. Refer to HVAC valve schedule articles for applications of valves. E. Valve Pressure-Temperature Ratings: Not less than indicated and as required for system pressures and temperatures. F. Valve Sizes: Same as upstream piping unless otherwise indicated. G. Valve Actuator Types: 1. Handlever: For quarter-turn valves smaller than NPS 4. H. Valves in Insulated Piping: 1. Include 2-inch stem extensions. 2. Extended operating handle of nonthermal-conductive material, and protective sleeves that allow operation of valves without breaking the vapor seals or disturbing insulation. 3. Memory stops that are fully adjustable after insulation is applied. I. Valve Bypass and Drain Connections: MSS SP BRONZE BALL VALVES A. Two-Piece Bronze Ball Valves with Full Port and Stainless-Steel Trim: 1. NIBCO Figure or approved equal. 2. Description: a. Standard: MSS SP-110. b. SWP Rating: 150 psig. c. CWP Rating: 600 psig. d. Body Design: Two piece. e. Body Material: Bronze. f. Ends: Threaded. BALL VALVES FOR HVAC PIPING

17 g. Seats: PTFE. h. Stem: Stainless steel. i. Ball: Stainless steel, vented. j. Port: Full. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine valve interior for cleanliness, freedom from foreign matter, and corrosion. Remove special packing materials, such as blocks, used to prevent disc movement during shipping and handling. B. Operate valves in positions from fully open to fully closed. Examine guides and seats made accessible by such operations. C. Examine threads on valve and mating pipe for form and cleanliness. D. Examine mating flange faces for conditions that might cause leakage. Check bolting for proper size, length, and material. Verify that gasket is of proper size, that its material composition is suitable for service, and that it is free from defects and damage. E. Do not attempt to repair defective valves; replace with new valves. 3.2 VALVE INSTALLATION A. Install valves with unions or flanges at each piece of equipment arranged to allow service, maintenance, and equipment removal without system shutdown. B. Locate valves for easy access and provide separate support where necessary. C. Install valves in horizontal piping with stem at or above center of pipe. D. Install valves in position to allow full stem movement. E. Install valve tags. Comply with requirements in Section "Identification for HVAC Piping and Equipment" for valve tags and schedules. 3.3 GENERAL REQUIREMENTS FOR VALVE APPLICATIONS A. If valves with specified SWP classes or CWP ratings are unavailable, the same types of valves with higher SWP classes or CWP ratings may be substituted. B. Select valves with the following end connections: 1. For Copper Tubing, NPS 2 and Smaller: Threaded ends except where solder-joint valveend option is indicated in valve schedules below. 2. For Steel Piping, NPS 2 and Smaller: Threaded ends. BALL VALVES FOR HVAC PIPING

18 3.4 HEATING-WATER VALVE SCHEDULE A. Pipe NPS 2 and Smaller: Two piece, full port, bronze with stainless-steel trim. 1. Valves may be provided with solder-joint ends instead of threaded ends. END OF SECTION BALL VALVES FOR HVAC PIPING

19 SECTION HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Metal pipe hangers and supports. 2. Trapeze pipe hangers. 3. Metal framing systems. 4. Thermal-hanger shield inserts. 5. Fastener systems. 6. Pipe stands. 7. Equipment supports. B. Related Sections: 1. Section "Metal Fabrications" for structural-steel shapes and plates for trapeze hangers for pipe and equipment supports. 2. Section "Vibration and Seismic Controls for HVAC for vibration isolation devices. 3. Section "Metal Ducts" for duct hangers and supports. 1.3 DEFINITIONS A. MSS: Manufacturers Standardization Society of The Valve and Fittings Industry Inc. 1.4 PERFORMANCE REQUIREMENTS A. Delegated Design: Design trapeze pipe hangers and equipment supports, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated. B. Structural Performance: Hangers and supports for HVAC piping and equipment shall withstand the effects of gravity loads and stresses within limits and under conditions indicated according to ASCE/SEI Design supports for multiple pipes, including pipe stands, capable of supporting combined weight of supported systems, system contents, and test water. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

20 2. Design equipment supports capable of supporting combined operating weight of supported equipment and connected systems and components. 3. Design seismic-restraint hangers and supports for piping and equipment. 1.5 ACTION SUBMITTALS A. Product Data: For each type of product indicated. B. Shop Drawings: Show fabrication and installation details and include calculations for the following; include Product Data for components: 1. Trapeze pipe hangers. 2. Metal framing systems. 3. Pipe stands. 4. Equipment supports. C. Delegated-Design Submittal: For trapeze hangers indicated to comply with performance requirements and design criteria, including analysis data signed and sealed by the qualified professional engineer responsible for their preparation. 1. Detail fabrication and assembly of trapeze hangers. 2. Design Calculations: Calculate requirements for designing trapeze hangers. 1.6 INFORMATIONAL SUBMITTALS A. Welding certificates. 1.7 QUALITY ASSURANCE A. Structural Steel Welding Qualifications: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural Welding Code - Steel." B. Pipe Welding Qualifications: Qualify procedures and operators according to ASME Boiler and Pressure Vessel Code. PART 2 - PRODUCTS 2.1 METAL PIPE HANGERS AND SUPPORTS A. Carbon-Steel Pipe Hangers and Supports: 1. Description: MSS SP-58, Types 1 through 58, factory-fabricated components. 2. Galvanized Metallic Coatings: Pregalvanized or hot dipped. 3. Nonmetallic Coatings: Plastic coating, jacket, or liner. 4. Padded Hangers: Hanger with fiberglass or other pipe insulation pad or cushion to support bearing surface of piping. 5. Hanger Rods: Continuous-thread rod, nuts, and washer made of galvanized, carbon steel. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

21 2.2 TRAPEZE PIPE HANGERS A. Description: MSS SP-69, Type 59, shop- or field-fabricated pipe-support assembly made from structural carbon-steel shapes with MSS SP-58 carbon-steel hanger rods, nuts, saddles, and U- bolts. 2.3 METAL FRAMING SYSTEMS A. MFMA Manufacturer Metal Framing Systems: 1. B-Line or approved equal. 2. Description: Shop- or field-fabricated pipe-support assembly for supporting multiple parallel pipes. 3. Standard: MFMA Channels: Continuous slotted steel channel with inturned lips. 5. Channel Nuts: Formed or stamped steel nuts or other devices designed to fit into channel slot and, when tightened, prevent slipping along channel. 6. Hanger Rods: Continuous-thread rod, nuts, and washer made of carbon steel. 7. Metallic Coating: Hot-dipped galvanized. 8. Paint Coating: Epoxy. 9. Plastic Coating: PVC. 2.4 THERMAL-HANGER SHIELD INSERTS A. Insulation-Insert Material for Cold Piping: ASTM C 552, Type II cellular glass with 100-psig minimum compressive strength and vapor barrier. B. Insulation-Insert Material for Hot Piping: ASTM C 552, Type II cellular glass with 100-psig minimum compressive strength. C. For Trapeze or Clamped Systems: Insert and shield shall cover entire circumference of pipe. D. For Clevis or Band Hangers: Insert and shield shall cover lower 180 degrees of pipe. E. Insert Length: Extend 2 inches beyond sheet metal shield for piping operating below ambient air temperature. 2.5 FASTENER SYSTEMS A. Powder-Actuated Fasteners: Threaded-steel stud, for use in hardened portland cement concrete with pull-out, tension, and shear capacities appropriate for supported loads and building materials where used. B. Mechanical-Expansion Anchors: Insert-wedge-type, stainless-steel anchors, for use in hardened portland cement concrete; with pull-out, tension, and shear capacities appropriate for supported loads and building materials where used. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

22 2.6 PIPE STANDS A. Manufacturers: Miro Industries, Mifab or approved equal. B. General Requirements for Pipe Stands: Shop- or field-fabricated assemblies made of manufactured corrosion-resistant components to support roof-mounted piping. C. Compact Pipe Stand: One-piece plastic unit with integral-rod roller, pipe clamps, or V-shaped cradle to support pipe, for roof installation without membrane penetration. D. Low-Type, Single-Pipe Stand: One-piece stainless-steel base unit with plastic roller, for roof installation without membrane penetration. E. High-Type, Single-Pipe Stand: 1. Description: Assembly of base, vertical and horizontal members, and pipe support, for roof installation without membrane penetration. 2. Base: Plastic. 3. Vertical Members: Two or more cadmium-plated-steel or stainless-steel, continuousthread rods. 4. Horizontal Member: Cadmium-plated-steel or stainless-steel rod with plastic or stainlesssteel, roller-type pipe support. F. High-Type, Multiple-Pipe Stand: 1. Description: Assembly of bases, vertical and horizontal members, and pipe supports, for roof installation without membrane penetration. 2. Bases: One or more; plastic. 3. Vertical Members: Two or more protective-coated-steel channels. 4. Horizontal Member: Protective-coated-steel channel. 5. Pipe Supports: Galvanized-steel, clevis-type pipe hangers. G. Curb-Mounted-Type Pipe Stands: Shop- or field-fabricated pipe supports made from structuralsteel shapes, continuous-thread rods, and rollers, for mounting on permanent stationary roof curb. 2.7 EQUIPMENT SUPPORTS A. Description: Welded, shop- or field-fabricated equipment support made from structural carbonsteel shapes. 2.8 MISCELLANEOUS MATERIALS A. Structural Steel: ASTM A 36/A 36M, carbon-steel plates, shapes, and bars; black and galvanized. B. Grout: ASTM C 1107, factory-mixed and -packaged, dry, hydraulic-cement, nonshrink and nonmetallic grout; suitable for interior and exterior applications. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

23 1. Properties: Nonstaining, noncorrosive, and nongaseous. 2. Design Mix: 5000-psi, 28-day compressive strength. SEYMOUR TOWN BUILDING RENOVATIONS PART 3 - EXECUTION 3.1 HANGER AND SUPPORT INSTALLATION A. Metal Pipe-Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Install hangers, supports, clamps, and attachments as required to properly support piping from the building structure. B. Metal Trapeze Pipe-Hanger Installation: Comply with MSS SP-69 and MSS SP-89. Arrange for grouping of parallel runs of horizontal piping, and support together on field-fabricated trapeze pipe hangers. 1. Pipes of Various Sizes: Support together and space trapezes for smallest pipe size or install intermediate supports for smaller diameter pipes as specified for individual pipe hangers. 2. Field fabricate from ASTM A 36/A 36M, carbon-steel shapes selected for loads being supported. Weld steel according to AWS D1.1/D1.1M. C. Metal Framing System Installation: Arrange for grouping of parallel runs of piping, and support together on field-assembled metal framing systems. D. Thermal-Hanger Shield Installation: Install in pipe hanger or shield for insulated piping. E. Fastener System Installation: 1. Install powder-actuated fasteners for use in lightweight concrete or concrete slabs less than 4 inches thick in concrete after concrete is placed and completely cured. Use operators that are licensed by powder-actuated tool manufacturer. Install fasteners according to powder-actuated tool manufacturer's operating manual. 2. Install mechanical-expansion anchors in concrete after concrete is placed and completely cured. Install fasteners according to manufacturer's written instructions. F. Pipe Stand Installation: 1. Pipe Stand Types except Curb-Mounted Type: Assemble components and mount on smooth roof surface. Do not penetrate roof membrane. 2. Curb-Mounted-Type Pipe Stands: Assemble components or fabricate pipe stand and mount on permanent, stationary roof curb. See Section "Roof Accessories" for curbs. G. Install hangers and supports complete with necessary attachments, inserts, bolts, rods, nuts, washers, and other accessories. H. Equipment Support Installation: Fabricate from welded-structural-steel shapes. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

24 I. Install hangers and supports to allow controlled thermal and seismic movement of piping systems, to permit freedom of movement between pipe anchors, and to facilitate action of expansion joints, expansion loops, expansion bends, and similar units. J. Install lateral bracing with pipe hangers and supports to prevent swaying. K. Install building attachments within concrete slabs or attach to structural steel. Install additional attachments at concentrated loads, including valves, flanges, and strainers, NPS 2-1/2 and larger and at changes in direction of piping. Install concrete inserts before concrete is placed; fasten inserts to forms and install reinforcing bars through openings at top of inserts. L. Load Distribution: Install hangers and supports so that piping live and dead loads and stresses from movement will not be transmitted to connected equipment. M. Pipe Slopes: Install hangers and supports to provide indicated pipe slopes and to not exceed maximum pipe deflections allowed by ASME B31.9 for building services piping. N. Insulated Piping: 1. Attach clamps and spacers to piping. a. Piping Operating above Ambient Air Temperature: Clamp may project through insulation. b. Piping Operating below Ambient Air Temperature: Use thermal-hanger shield insert with clamp sized to match OD of insert. c. Do not exceed pipe stress limits allowed by ASME B31.9 for building services piping. 2. Install MSS SP-58, Type 39, protection saddles if insulation without vapor barrier is indicated. Fill interior voids with insulation that matches adjoining insulation. a. Option: Thermal-hanger shield inserts may be used. Include steel weightdistribution plate for pipe NPS 4 and larger if pipe is installed on rollers. 3. Install MSS SP-58, Type 40, protective shields on cold piping with vapor barrier. Shields shall span an arc of 180 degrees. a. Option: Thermal-hanger shield inserts may be used. Include steel weightdistribution plate for pipe NPS 4 and larger if pipe is installed on rollers. 4. Shield Dimensions for Pipe: Not less than the following: a. NPS 1/4 to NPS 3-1/2: 12 inches long and inch thick. b. NPS 4: 12 inches long and 0.06 inch thick. c. NPS 5 and NPS 6: 18 inches long and 0.06 inch (1.52 mm) thick. d. NPS 8 to NPS 14: 24 inches long and inch thick. 5. Pipes NPS 8 and Larger: Include wood or reinforced calcium-silicate-insulation inserts of length at least as long as protective shield. 6. Thermal-Hanger Shields: Install with insulation same thickness as piping insulation. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

25 3.2 EQUIPMENT SUPPORTS A. Fabricate structural-steel stands to suspend equipment from structure overhead or to support equipment above floor. B. Grouting: Place grout under supports for equipment and make bearing surface smooth. C. Provide lateral bracing, to prevent swaying, for equipment supports. 3.3 METAL FABRICATIONS A. Cut, drill, and fit miscellaneous metal fabrications for trapeze pipe hangers and equipment supports. B. Fit exposed connections together to form hairline joints. Field weld connections that cannot be shop welded because of shipping size limitations. C. Field Welding: Comply with AWS D1.1/D1.1M procedures for shielded, metal arc welding; appearance and quality of welds; and methods used in correcting welding work; and with the following: 1. Use materials and methods that minimize distortion and develop strength and corrosion resistance of base metals. 2. Obtain fusion without undercut or overlap. 3. Remove welding flux immediately. 4. Finish welds at exposed connections so no roughness shows after finishing and so contours of welded surfaces match adjacent contours. 3.4 ADJUSTING A. Hanger Adjustments: Adjust hangers to distribute loads equally on attachments and to achieve indicated slope of pipe. B. Trim excess length of continuous-thread hanger and support rods to 1-1/2 inches. 3.5 PAINTING A. Touchup: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately after erecting hangers and supports. Use same materials as used for shop painting. Comply with SSPC-PA 1 requirements for touching up field-painted surfaces. 1. Apply paint by brush or spray to provide a minimum dry film thickness of 2.0 mils. B. Touchup: Cleaning and touchup painting of field welds, bolted connections, and abraded areas of shop paint on miscellaneous metal are specified in Section "Exterior Painting", Section "Interior Painting" and Section "High Performance Coatings." C. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply galvanizing-repair paint to comply with ASTM A 780. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

26 3.6 HANGER AND SUPPORT SCHEDULE A. Specific hanger and support requirements are in Sections specifying piping systems and equipment. B. Comply with MSS SP-69 for pipe-hanger selections and applications that are not specified in piping system Sections. C. Use hangers and supports with galvanized metallic coatings for piping and equipment that will not have field-applied finish. D. Use nonmetallic coatings on attachments for electrolytic protection where attachments are in direct contact with copper tubing. E. Use carbon-steel pipe hangers and supports, metal trapeze pipe hangers and metal framing systems and attachments for general service applications. F. Use padded hangers for piping that is subject to scratching. G. Use thermal-hanger shield inserts for insulated piping and tubing. H. Horizontal-Piping Hangers and Supports: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Adjustable, Steel Clevis Hangers (MSS Type 1): For suspension of non-insulated or insulated, stationary pipes NPS 1/2 to NPS Yoke-Type Pipe Clamps (MSS Type 2): For suspension of up to 1050 deg F, pipes NPS 4 to NPS 24, requiring up to 4 inches of insulation. 3. Carbon- or Alloy-Steel, Double-Bolt Pipe Clamps (MSS Type 3): For suspension of pipes NPS 3/4 to NPS 36, requiring clamp flexibility and up to 4 inches of insulation. 4. Steel Pipe Clamps (MSS Type 4): For suspension of cold and hot pipes NPS 1/2 to NPS 24 if little or no insulation is required. 5. Pipe Hangers (MSS Type 5): For suspension of pipes NPS 1/2 to NPS 4, to allow offcenter closure for hanger installation before pipe erection. 6. Adjustable, Swivel Split- or Solid-Ring Hangers (MSS Type 6): For suspension of noninsulated, stationary pipes NPS 3/4 to NPS Adjustable, Steel Band Hangers (MSS Type 7): For suspension of non-insulated, stationary pipes NPS 1/2 to NPS Adjustable Band Hangers (MSS Type 9): For suspension of non-insulated, stationary pipes NPS 1/2 to NPS Adjustable, Swivel-Ring Band Hangers (MSS Type 10): For suspension of non-insulated, stationary pipes NPS 1/2 to NPS Split Pipe Ring with or without Turnbuckle Hangers (MSS Type 11): For suspension of non-insulated, stationary pipes NPS 3/8 to NPS Extension Hinged or Two-Bolt Split Pipe Clamps (MSS Type 12): For suspension of non-insulated, stationary pipes NPS 3/8 to NPS U-Bolts (MSS Type 24): For support of heavy pipes NPS 1/2 to NPS Clips (MSS Type 26): For support of insulated pipes not subject to expansion or contraction. 14. Pipe Saddle Supports (MSS Type 36): For support of pipes NPS 4 to NPS 36, with steelpipe base stanchion support and cast-iron floor flange or carbon-steel plate. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

27 15. Pipe Stanchion Saddles (MSS Type 37): For support of pipes NPS 4 to NPS 36, with steel-pipe base stanchion support and cast-iron floor flange or carbon-steel plate, and with U-bolt to retain pipe. 16. Adjustable Pipe Saddle Supports (MSS Type 38): For stanchion-type support for pipes NPS 2-1/2 to NPS 36 if vertical adjustment is required, with steel-pipe base stanchion support and cast-iron floor flange. 17. Single-Pipe Rolls (MSS Type 41): For suspension of pipes NPS 1 to NPS 30, from two rods if longitudinal movement caused by expansion and contraction might occur. 18. Adjustable Roller Hangers (MSS Type 43): For suspension of pipes NPS 2-1/2 to NPS 24, from single rod if horizontal movement caused by expansion and contraction might occur. 19. Complete Pipe Rolls (MSS Type 44): For support of pipes NPS 2 to NPS 42 if longitudinal movement caused by expansion and contraction might occur but vertical adjustment is not necessary. 20. Pipe Roll and Plate Units (MSS Type 45): For support of pipes NPS 2 to NPS 24 if small horizontal movement caused by expansion and contraction might occur and vertical adjustment is not necessary. 21. Adjustable Pipe Roll and Base Units (MSS Type 46): For support of pipes NPS 2 to NPS 30 if vertical and lateral adjustment during installation might be required in addition to expansion and contraction. I. Vertical-Piping Clamps: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Extension Pipe or Riser Clamps (MSS Type 8): For support of pipe risers NPS 3/4 to NPS Carbon- or Alloy-Steel Riser Clamps (MSS Type 42): For support of pipe risers NPS 3/4 to NPS 24 if longer ends are required for riser clamps. J. Hanger-Rod Attachments: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Steel Turnbuckles (MSS Type 13): For adjustment up to 6 inches for heavy loads. 2. Steel Clevises (MSS Type 14): For 120 to 450 deg F piping installations. 3. Swivel Turnbuckles (MSS Type 15): For use with MSS Type 11, split pipe rings. 4. Malleable-Iron Sockets (MSS Type 16): For attaching hanger rods to various types of building attachments. 5. Steel Weldless Eye Nuts (MSS Type 17): For 120 to 450 deg F piping installations. K. Building Attachments: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Steel or Malleable Concrete Inserts (MSS Type 18): For upper attachment to suspend pipe hangers from concrete ceiling. 2. Top-Beam C-Clamps (MSS Type 19): For use under roof installations with bar-joist construction, to attach to top flange of structural shape. 3. Side-Beam or Channel Clamps (MSS Type 20): For attaching to bottom flange of beams, channels, or angles. 4. Center-Beam Clamps (MSS Type 21): For attaching to center of bottom flange of beams. 5. Welded Beam Attachments (MSS Type 22): For attaching to bottom of beams if loads are considerable and rod sizes are large. HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

28 6. C-Clamps (MSS Type 23): For structural shapes. 7. Top-Beam Clamps (MSS Type 25): For top of beams if hanger rod is required tangent to flange edge. 8. Side-Beam Clamps (MSS Type 27): For bottom of steel I-beams. 9. Steel-Beam Clamps with Eye Nuts (MSS Type 28): For attaching to bottom of steel I- beams for heavy loads. 10. Linked-Steel Clamps with Eye Nuts (MSS Type 29): For attaching to bottom of steel I- beams for heavy loads, with link extensions. 11. Malleable-Beam Clamps with Extension Pieces (MSS Type 30): For attaching to structural steel. 12. Welded-Steel Brackets: For support of pipes from below or for suspending from above by using clip and rod. Use one of the following for indicated loads: a. Light (MSS Type 31): 750 lb. b. Medium (MSS Type 32): 1500 lb. c. Heavy (MSS Type 33): 3000 lb. 13. Side-Beam Brackets (MSS Type 34): For sides of steel or wooden beams. 14. Plate Lugs (MSS Type 57): For attaching to steel beams if flexibility at beam is required. 15. Horizontal Travelers (MSS Type 58): For supporting piping systems subject to linear horizontal movement where headroom is limited. L. Saddles and Shields: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Steel-Pipe-Covering Protection Saddles (MSS Type 39): To fill interior voids with insulation that matches adjoining insulation. 2. Protection Shields (MSS Type 40): Of length recommended in writing by manufacturer to prevent crushing insulation. 3. Thermal-Hanger Shield Inserts: For supporting insulated pipe. M. Spring Hangers and Supports: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Restraint-Control Devices (MSS Type 47): Where indicated to control piping movement. 2. Spring Cushions (MSS Type 48): For light loads if vertical movement does not exceed 1-1/4 inches. 3. Spring-Cushion Roll Hangers (MSS Type 49): For equipping Type 41, roll hanger with springs. 4. Spring Sway Braces (MSS Type 50): To retard sway, shock, vibration, or thermal expansion in piping systems. 5. Variable-Spring Hangers (MSS Type 51): Preset to indicated load and limit variability factor to 25 percent to allow expansion and contraction of piping system from hanger. 6. Variable-Spring Base Supports (MSS Type 52): Preset to indicated load and limit variability factor to 25 percent to allow expansion and contraction of piping system from base support. 7. Variable-Spring Trapeze Hangers (MSS Type 53): Preset to indicated load and limit variability factor to 25 percent to allow expansion and contraction of piping system from trapeze support. 8. Constant Supports: For critical piping stress and if necessary to avoid transfer of stress from one support to another support, critical terminal, or connected equipment. Include HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

29 auxiliary stops for erection, hydrostatic test, and load-adjustment capability. These supports include the following types: a. Horizontal (MSS Type 54): Mounted horizontally. b. Vertical (MSS Type 55): Mounted vertically. c. Trapeze (MSS Type 56): Two vertical-type supports and one trapeze member. N. Comply with MSS SP-69 for trapeze pipe-hanger selections and applications that are not specified in piping system Sections. O. Comply with MFMA-103 for metal framing system selections and applications that are not specified in piping system Sections. P. Use powder-actuated fasteners or mechanical-expansion anchors instead of building attachments where required in concrete construction. END OF SECTION HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT

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31 SECTION VIBRATION AND SEISMIC CONTROLS FOR HVAC PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Elastomeric isolation pads. 2. Elastomeric isolation mounts. 3. Restrained elastomeric isolation mounts. 4. Open-spring isolators. 5. Housed-spring isolators. 6. Restrained-spring isolators. 7. Housed-restrained-spring isolators. 8. Pipe-riser resilient supports. 9. Resilient pipe guides. 10. Elastomeric hangers. 11. Spring hangers. 12. Snubbers. 13. Restraint channel bracings. 14. Restraint cables. 15. Seismic-restraint accessories. 16. Mechanical anchor bolts. 17. Adhesive anchor bolts. 18. Vibration isolation equipment bases. 19. Restrained isolation roof-curb rails. B. Related Requirements: 1. Section "Vibration and Seismic Controls for Fire Suppression" for devices for fire-suppression equipment and systems. 2. Section "Vibration and Seismic Controls for Plumbing" for devices for plumbing equipment and systems. 1.3 DEFINITIONS A. IBC: International Building Code. B. ICC-ES: ICC-Evaluation Service. VIBRATION AND SEISMIC CONTROLS FOR HVAC

32 C. OSHPD: Office of Statewide Health Planning & Development (for the State of California). 1.4 ACTION SUBMITTALS A. Product Data: For each type of product. 1. Include rated load, rated deflection, and overload capacity for each vibration isolation device. 2. Illustrate and indicate style, material, strength, fastening provision, and finish for each type and size of vibration isolation device and seismic-restraint component required. a. Tabulate types and sizes of seismic restraints, complete with report numbers and rated strength in tension and shear as evaluated by an agency acceptable to authorities having jurisdiction. b. Annotate to indicate application of each product submitted and compliance with requirements. 3. Interlocking Snubbers: Include ratings for horizontal, vertical, and combined loads. B. Shop Drawings: 1. Detail fabrication and assembly of equipment bases. Detail fabrication including anchorages and attachments to structure and to supported equipment. Include adjustable motor bases, rails, and frames for equipment mounting. 2. Vibration Isolation Base Details: Detail fabrication including anchorages and attachments to structure and to supported equipment. Include adjustable motor bases, rails, and frames for equipment mounting. C. Delegated-Design Submittal: For each vibration isolation and seismic-restraint device. 1. Include design calculations and details for selecting vibration isolators, seismic restraints, and vibration isolation bases complying with performance requirements, design criteria, and analysis data signed and sealed by the qualified professional engineer responsible for their preparation. 2. Design Calculations: Calculate static and dynamic loading due to equipment weight, operation, and seismic and wind forces required to select vibration isolators and seismic and wind restraints and for designing vibration isolation bases. a. Coordinate design calculations with wind load calculations required for equipment mounted outdoors. Comply with requirements in other Sections for equipment mounted outdoors. 3. Riser Supports: Include riser diagrams and calculations showing anticipated expansion and contraction at each support point, initial and final loads on building structure, spring deflection changes, and seismic loads. Include certification that riser system was examined for excessive stress and that none exists. 4. Seismic and Wind Restraint Details: a. Design Analysis: To support selection and arrangement of seismic and wind restraints. Include calculations of combined tensile and shear loads. VIBRATION AND SEISMIC CONTROLS FOR HVAC