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HEATING, VENTILATING AND AIR CONDITIONING PART 1 - GENERAL 1.1 SCOPE SCOPE A. THE WORK UNDER THIS SECTION INCLUDES EVERYTHING NECESSARY THE WORK UNDER THIS SECTION INCLUDES EVERYTHING NECESSARY FOR AND INCIDENTAL TO EXECUTING AND COMPLETING THE HEATING, VENTILATING AND AIR CONDITIONING WORK, EXCEPT AS HEREINAFTER SPECIFICALLY EXCLUDED. 1.2 SUBMITTALS SUBMITTALS A. SUBMIT AN ELECTRONIC COPY OF SHOP DRAWINGS FOR ALL SUBMIT AN ELECTRONIC COPY OF SHOP DRAWINGS FOR ALL PRODUCTS. ALL SUBMITTAL SHEETS SHALL BE CLEARLY MARKED OR HIGHLIGHTED SHOWING CONFORMANCE TO SPECIFICATIONS AND SCHEDULE. ALL SUBMITTALS SHALL BE CROSSED REFERENCED TO THE REQUIREMENTS OF EACH SPECIFICATION PARAGRAPH PERTAINING TO THE ITEM BEING SUBMITTED. ALL REQUIREMENTS MUST BE SHOWN ON MANUFACTURER'S LITERATURE. MANUFACTURER'S REPRESENTATIVE'S LETTERHEAD, OR SUPER-IMPOSED NOTATIONS, ARE NOT ACCEPTABLE. THIS REQUIREMENT PERTAINS TO ALL SECTIONS OF DIVISION 15000. NO EXCEPTIONS. SUBMITTALS NOT SO MARKED WILL BE SUBJECT TO REJECTION. B. THE CONTRACTOR SHALL ASSUME ANY EXTRA COSTS TO OTHER THE CONTRACTOR SHALL ASSUME ANY EXTRA COSTS TO OTHER WORK OR TRADES RESULTING FROM THE USE OF SUBSTITUTIONS. ALL SUBSTITUTIONS SHALL BE SUPPLIED AS APPROVED AT NO EXTRA CHARGE. 1.3 DELIVERY AND STORAGE OF MATERIALS DELIVERY AND STORAGE OF MATERIALS A. PROVIDE FOR THE SAFETY AND GOOD CONDITION OF ALL MATERIALS PROVIDE FOR THE SAFETY AND GOOD CONDITION OF ALL MATERIALS AND EQUIPMENT UNTIL FINAL ACCEPTANCE BY THE ARCHITECT. PROTECT ALL MATERIALS AND EQUIPMENT FROM DAMAGE FROM ANY CAUSE WHATEVER, AND PROVIDE ADEQUATE AND PROPER STORAGE FACILITIES DURING THE PROGRESS OF THE WORK. REPLACE ALL DAMAGED AND DEFECTIVE WORK PRECEDENT TO FILING APPLICATION FOR FINAL ACCEPTANCE. 1.4 CODES AND STANDARDS CODES AND STANDARDS A. ALL WORK AND MATERIALS SHALL BE IN FULL ACCORDANCE WITH ALL WORK AND MATERIALS SHALL BE IN FULL ACCORDANCE WITH TITLE 24 CCR AND THE LATEST RULES AND REGULATIONS OF THE STATE FIRE MARSHALL; THE SAFETY ORDERS OF THE DIVISION OF INDUSTRIAL SAFETY; THE NATIONAL ELECTRIC CODE; THE CALIFORNIA PLUMBING CODE; LOCAL BUILDING CODES; THE CALIFORNIA MECHANICAL CODE; VOL. II OF THE CALIFORNIA BUILDING CODE; CCR T-24; AND OTHER APPLICABLE CODES, LAWS OR REGULATIONS OF BODIES LAWFULLY EMPOWERED AND HAVING JURISDICTION OVER THIS PROJECT. NOTHING IN THE PLANS OR SPECIFICATIONS IS TO BE CONSTRUED TO PERMIT WORK NOT CONFORMING TO THESE CODES. B. THIS CONTRACTOR SHALL OBTAIN ALL PERMITS, PATENT RIGHTS, AND THIS CONTRACTOR SHALL OBTAIN ALL PERMITS, PATENT RIGHTS, AND LICENSES THAT ARE REQUIRED FOR THE PERFORMING OF HIS WORK BY ALL LAWS, ORDINANCES, RULES AND REGULATIONS OR ORDERS OF ANY OFFICER AND/OR BODY, SHALL GIVE ALL NOTICES NECESSARY IN CONNECTION THEREWITH, AND PAY ALL FEES RELATING THERETO AND ALL COSTS AND EXPENSES INCURRED ON ACCOUNT THEREOF. NO WORK SHALL BE COVERED BEFORE INSPECTION BY THE JURISDICTIONAL INSPECTION AND THE ARCHITECT. 1.5 SEISMIC ANCHORAGE AND BRACING SEISMIC ANCHORAGE AND BRACING A. ALL DUCTWORK AND PIPING SHALL BE ANCHORED OR BRACED IN ALL DUCTWORK AND PIPING SHALL BE ANCHORED OR BRACED IN ACCORDANCE WITH THE CALIFORNIA BUILDING CODE. THE CONTRACTOR IS RESPONSIBLE FOR PROVIDING ANCHORAGE OR BRACING FOR ALL EQUIPMENT REGARDLESS OF WHETHER DETAILED OR SHOWN ON THE PLANS. ALL PIPING AND DUCTWORK SUPPORTS NOT DETAILED OR SHOWN ON THE PLANS REQUIRES APPROVAL OF A REGISTERED STRUCTURAL ENGINEER. B. ALL CUSTOM SUPPORTS REQUIRE THE APPROVAL OF A REGISTERED ALL CUSTOM SUPPORTS REQUIRE THE APPROVAL OF A REGISTERED STRUCTURAL ENGINEER. ALL SHOP DRAWINGS AND CALCULATIONS SHALL BE SUBMITTED PRIOR TO FABRICATION. 1.6 CUTTING AND PATCHING CUTTING AND PATCHING A. PERFORM ALL CUTTING AND FITTING REQUIRED FOR WORK OF THIS PERFORM ALL CUTTING AND FITTING REQUIRED FOR WORK OF THIS SECTION IN ROUGH CONSTRUCTION OF THE BUILDING. B. ALL PATCHING OF FINISHED CONSTRUCTION OF BUILDING SHALL BE ALL PATCHING OF FINISHED CONSTRUCTION OF BUILDING SHALL BE PERFORMED UNDER THE SECTIONS OF SPECIFICATIONS COVERING THESE MATERIALS. C. OPENINGS THROUGH FIRE RATED WALLS FOR PIPES AND DUCTS OPENINGS THROUGH FIRE RATED WALLS FOR PIPES AND DUCTS SHALL BE PACKED WITH IMPERVIOUS NONCOMBUSTIBLE MATERIALS TO PROVIDE A TIGHT FIT. ALL DUCT PENETRATIONS THROUGH FIRE RATED WALLS SHALL HAVE A FIRE SMOKE DAMPER WITH SMOKE DETECTOR AND ACCESS PANEL. 1.7 GENERAL GENERAL A. UNLESS OTHERWISE SPECIFIED HEREIN, ALL EQUIPMENT AND UNLESS OTHERWISE SPECIFIED HEREIN, ALL EQUIPMENT AND FIXTURES SHALL BE INSTALLED IN ACCORDANCE WITH THE MANUFACTURER'S RECOMMENDATIONS. B. BEFORE SUBMITTING HIS BID, THE CONTRACTOR FOR THE WORK BEFORE SUBMITTING HIS BID, THE CONTRACTOR FOR THE WORK UNDER THIS SECTION SHALL CAREFULLY STUDY ALL DRAWINGS, AND SHALL MAKE A CAREFUL EXAMINATION OF THE PREMISES. HE SHALL DEFINITELY DETERMINE IN ADVANCE, THE METHODS OF INSTALLING AND CONNECTING THE APPARATUS, THE MEANS TO BE PROVIDED FOR GETTING ANY EQUIPMENT INTO PLACE, AND SHALL MAKE HIMSELF THOROUGHLY FAMILIAR WITH ALL THE REQUIREMENTS OF THE CONTRACT. AFTER AWARD OF THE CONTRACT, NO SUBSEQUENT ALLOWANCES WILL BE MADE TO THE CONTRACTOR DUE TO HIS FAILURE TO COMPLY WITH THE ABOVE REQUIREMENTS AND ANY OTHER CONDITIONS AFFECTING THE INSTALLATION AND COMPLETION OF ALL WORK. C. WORKMANSHIP: ALL LABOR SHALL BE CAREFULLY SKILLED FOR THIS WORKMANSHIP: ALL LABOR SHALL BE CAREFULLY SKILLED FOR THIS KIND OF WORK, THOROUGH AND FIRST CLASS IN ALL RESPECTS AND UNDER THE DIRECTION OF A COMPETENT FOREMAN. 1.8 DAMAGE BY LEAKS DAMAGE BY LEAKS A. THIS CONTRACTOR SHALL BE RESPONSIBLE FOR DAMAGE TO THE THIS CONTRACTOR SHALL BE RESPONSIBLE FOR DAMAGE TO THE GROUNDS, WALKS, ROADS, BUILDINGS, PIPING SYSTEMS, ELECTRICAL SYSTEMS AND THEIR EQUIPMENT AND CONTENTS, CAUSED BY LEAKS IN THE PIPING SYSTEMS BEING INSTALLED OR HAVING BEEN INSTALLED HEREIN. HE SHALL REPAIR AT HIS EXPENSE ALL DAMAGE SO CAUSED. ALL REPAIR WORK SHALL BE DONE AS DIRECTED BY THE ARCHITECT. 1.9 EMERGENCY REPAIRS EMERGENCY REPAIRS A. THE OWNER RESERVES THE RIGHT TO MAKE EMERGENCY REPAIRS AS THE OWNER RESERVES THE RIGHT TO MAKE EMERGENCY REPAIRS AS REQUIRED TO KEEP EQUIPMENT IN OPERATION WITHOUT VOIDING THE CONTRACTOR'S GUARANTEE BOND NOR RELIEVING THE CONTRACTOR OF HIS RESPONSIBILITIES. 1.10 EXPLANATION AND PRECEDENCE OF DRAWINGS EXPLANATION AND PRECEDENCE OF DRAWINGS A. FOR PURPOSES OF CLEARNESS AND LEGIBILITY, DRAWINGS ARE FOR PURPOSES OF CLEARNESS AND LEGIBILITY, DRAWINGS ARE ESSENTIALLY DIAGRAMMATIC, AND, ALTHOUGH SIZE AND LOCATION OF EQUIPMENT ARE DRAWN TO SCALE WHEREVER POSSIBLE, CONTRACTOR SHALL MAKE USE OF ALL DATA IN ALL THE CONTRACT DOCUMENTS AND SHALL VERIFY THIS INFORMATION AT BUILDING SITE. B. THE DRAWINGS INDICATE REQUIRED SIZE AND POINTS OF THE DRAWINGS INDICATE REQUIRED SIZE AND POINTS OF TERMINATION OF DUCTS, AND SUGGEST PROPER ROUTES TO CONFORM TO STRUCTURE, AVOID OBSTRUCTIONS AND PRESERVE CLEARANCES. HOWEVER, IT IS NOT INTENDED THAT DRAWINGS INDICATE ALL NECESSARY OFFSETS, AND IT SHALL BE THE WORK OF THE CONTRACTOR TO MAKE THE INSTALLATION IN SUCH A MANNER AS TO CONFORM TO STRUCTURE, AVOID OBSTRUCTIONS, PRESERVE HEADROOM AND KEEP OPENINGS AND PASSAGEWAYS CLEAR, WITHOUT FURTHER INSTRUCTIONS OR COST TO THE OWNER. C. SHOP DRAWINGS SHALL BE FURNISHED INDICATING ALL CHANGES TO SHOP DRAWINGS SHALL BE FURNISHED INDICATING ALL CHANGES TO MEET SPACE REQUIREMENTS, CODE REQUIREMENTS AND AS NECESSARY TO RESOLVE ALL SPACE CONFLICTS. D. IT IS INTENDED THAT ALL APPARATUS BE LOCATED SYMMETRICALLY IT IS INTENDED THAT ALL APPARATUS BE LOCATED SYMMETRICALLY WITH ARCHITECTURAL ELEMENTS. REFER TO ARCHITECTURAL DETAILS IN COMPLETING THE CORRELATING WORK. E. THE CONTRACTOR SHALL FULLY INFORM HIMSELF REGARDING ANY THE CONTRACTOR SHALL FULLY INFORM HIMSELF REGARDING ANY AND ALL PECULIARITIES AND LIMITATIONS OF THE SPACES AVAILABLE FOR THE INSTALLATION OF ALL WORK AND MATERIALS FURNISHED AND INSTALLED UNDER THE CONTRACT. HE SHALL EXERCISE DUE AND PARTICULAR CAUTION TO DETERMINE THAT ALL PARTS OF HIS WORK ARE MADE QUICKLY AND EASILY ACCESSIBLE. F. THE CONTRACTOR SHALL STUDY ALL DRAWINGS AND SPECIFICATIONS THE CONTRACTOR SHALL STUDY ALL DRAWINGS AND SPECIFICATIONS TO DETERMINE ANY CONFLICT WITH ORDINANCES AND STATUTES. ANY ERRORS OR OMISSIONS SHALL BE REPORTED, AND ANY CHANGES SHALL BE SHOWN IN THE AS-BUILT DRAWINGS AND THE ADDITIONAL WORK PERFORMED AT NO COST TO THE OWNER. G. SUBMITTAL OF BID SHALL INDICATE THE CONTRACTOR HAS EXAMINED SUBMITTAL OF BID SHALL INDICATE THE CONTRACTOR HAS EXAMINED THE SITE AND DRAWINGS AND HAS INCLUDED ALL REQUIRED ALLOWANCES IN HIS BID. NO ALLOWANCE SHALL BE MADE FOR ANY ERROR RESULTING FROM CONTRACTOR'S FAILURE TO VISIT JOB SITE AND TO REVIEW DRAWINGS, AND BID SHALL INCLUDE COSTS FOR ALL REQUIRED DRAWINGS AND CHANGES AS OUTLINED ABOVE, ALL AT NO COST TO OWNER. 1.11 SUPERVISION AND COOPERATION SUPERVISION AND COOPERATION A. THIS CONTRACTOR SHALL INCLUDE THE SERVICES OF EXPERIENCED THIS CONTRACTOR SHALL INCLUDE THE SERVICES OF EXPERIENCED SUPERINTENDENTS FOR EACH SUB_SECTION WHO SHALL BE CONSTANTLY IN CHARGE OF THE WORK, TOGETHER WITH THE QUALIFIED JOURNEYMEN, HELPERS AND LABORERS, REQUIRED TO PROPERLY UNLOAD, INSTALL, CONNECT, ADJUST, START AND OPERATE AND TEST THE WORK INVOLVED, INCLUDING EQUIPMENT AND MATERIALS FURNISHED BY OTHERS AND BY THE OWNER. B. THE WORK UNDER THIS SECTION SHALL BE IN COOPERATION WITH THE WORK UNDER THIS SECTION SHALL BE IN COOPERATION WITH THE WORK OF OTHER TRADES TO PREVENT CONFLICT OR INTERFERENCE AND TO AID RAPID COMPLETION OF THE OVERALL PROJECT. 1.12 OPERATION OPERATION A. THE OWNER MAY REQUIRE OPERATION OF PARTS OR ALL OF THE THE OWNER MAY REQUIRE OPERATION OF PARTS OR ALL OF THE INSTALLATION FOR BENEFICIAL OCCUPANCY PRIOR TO FINAL ACCEPTANCE. REFER TO GENERAL CONDITIONS OF THE CONTRACT. B. COST OF UTILITIES FOR SUCH OPERATION SHALL BE PAID BY THE COST OF UTILITIES FOR SUCH OPERATION SHALL BE PAID BY THE OWNER. SAID OPERATION SHALL NOT BE CONSTRUED AS ACCEPTANCE OF THE WORK. 1.13 UTILITY SERVICES DURING CONSTRUCTION UTILITY SERVICES DURING CONSTRUCTION A. ALL WATER AND ELECTRIC POWER USED FOR CONSTRUCTION SHALL ALL WATER AND ELECTRIC POWER USED FOR CONSTRUCTION SHALL BE PAID FOR BY THE CONTRACTOR. 1.14 ACCESS PANELS ACCESS PANELS A. ACCESS DOORS AND PANELS: WHEREVER VOLUME DAMPERS, FIRE ACCESS DOORS AND PANELS: WHEREVER VOLUME DAMPERS, FIRE DAMPERS, CONTROLS OR OTHER ITEMS OR PARTS OF THE INSTALLATION WHICH REQUIRE PERIODIC INSPECTION OR ADJUSTMENT ARE CONCEALED BY PERMANENT NON-REMOVABLE CONSTRUCTION, AN ACCESS DOOR SHALL BE PROVIDED. DOOR SHALL BE MANUFACTURED BY ELMDOR, POTTER ROEMER, OR APPROVED EQUAL WITH SLOTTED, HAND-OPERATED CAM LOCKS. TYPES TO BE AS APPROVED AND AS APPROPRIATE FOR THE SURFACE AND CONSTRUCTION IN WHICH IT IS INSTALLED. PROVIDE VANDAL RESISTANT LATCH. FURNISHING AND LOCATING OF ACCESS PANELS BY DIVISION 15, INSTALLATION BY OTHERS; VERIFY ALL LOCATIONS WITH ARCHITECT. 1.15 WORK INCLUDED WORK INCLUDED A. WORK INCLUDED SHALL BE AS INDICATED ON THE DRAWINGS, WORK INCLUDED SHALL BE AS INDICATED ON THE DRAWINGS, INCLUDING BUT NOT LIMITED TO THE FOLLOWING: 1. DUCTWORK. DUCTWORK. 2. INSULATION. INSULATION. PART 2 - PRODUCTS 2.1 SHEET METAL AND DUCTWORK SHEET METAL AND DUCTWORK A. THE CONTRACTOR SHALL FURNISH AND INSTALL ALL SHEET METAL THE CONTRACTOR SHALL FURNISH AND INSTALL ALL SHEET METAL DUCTWORK AND PLENUMS SHOWN ON PLANS, EXCEPT WHERE OTHERWISE NOTED SHEET METAL SHALL BE GALVANIZED STEEL. CONSTRUCTION AND GAUGES SHALL CONFORM TO THE REQUIREMENTS OF CHAPTER 6 IN THE CALIFORNIA MECHANICAL CODE, 2016 EDITION AND SMACNA. INSTALLATION OF DUCTS SHALL CONFORM TO THE REQUIREMENTS OF THE 2016 CALIFORNIA MECHANICAL CODE AND SMACNA HVAC DUCT CONSTRUCTION STANDARDS, 2005 EDITION, UNLESS MORE RESTRICTIVE WITHIN THIS SPECIFICATION. DUCT SHALL HAVE SMOOTH INTERIORS AND ALL SEAMS, BRACES, AND HANGERS SHALL BE ON THE OUTSIDE. DUCT SHALL BE CONSTRUCTED FOR A MINIMUM STATIC PRESSURE OF 2" W.C., UNLESS OTHERWISE NOTED. B. ROUND DUCT AND FITTINGS: ROUND DUCTWORK WHERE INDICATED ROUND DUCT AND FITTINGS: ROUND DUCTWORK WHERE INDICATED ON DRAWINGS SHALL BE SPIRAL LOCK SEAM LOW PRESSURE TYPE AS MANUFACTURED BY UNITED MCGILL CORPORATION OR APPROVED EQUAL, AND SHALL BE CONSTRUCTED OF GALVANIZED STEEL. CONSTRUCTION AND GAUGES SHALL CONFORM TO THE REQUIREMENTS OF CHAPTER 6 IN THE CALIFORNIA MECHANICAL CODE, 2016 EDITION AND SMACNA. ROUND DUCT FITTINGS SHALL MATCH GAUGE THICKNESS OF ROUND DUCT. REDUCERS SHALL BE FORMED TYPE. 90 DEGREE ELBOWS SHALL BE FOUR PIECE TYPE. 45 DEGREE ELBOWS SHALL BE THREE PIECE TYPE. FITTINGS SHALL HAVE SEAMS AND JOINTS SPOT WELDED AND SEALED AIRTIGHT WITH DUCT SEALANT. ALL CIRCUMFERENTIAL JOINTS SHALL BE DUCT TO DUCT COUPLINGS, MECHANICALLY FASTENED WITH SHEET METAL SCREWS, MINIMUM FOUR PER FITTING AND NOT TO EXCEED 12” ON ON CENTER. ADJUSTABLE FITTINGS WILL NOT BE ACCEPTED. C. TRANSVERSE JOINTS: DUCTMATE, OR WARD PROPRIETARY DUCT TRANSVERSE JOINTS: DUCTMATE, OR WARD PROPRIETARY DUCT CONNECTION SYSTEMS WILL BE ACCEPTED. DUCTWORK CONSTRUCTED USING THESE SYSTEMS WILL REFER TO THE MANUFACTURERS GUIDELINES FOR INTERMEDIATE REINFORCEMENT SIZE AND SPACING, AND JOINT REINFORCEMENTS. SHEET METAL GAUGES SHALL CONFORM TO THE CALIFORNIA MECHANICAL CODE. MANUFACTURER SPECIFIED GAUGES ARE NOT ACCEPTABLE UNLESS HEAVIER THAN MENTIONED ABOVE. D. DUCTBOARD: FIBERGLASS DUCTBOARD WILL NOT BE ACCEPTED. DUCTBOARD: FIBERGLASS DUCTBOARD WILL NOT BE ACCEPTED. E. WHERE TURNING VANES ARE INDICATED ON THE DRAWINGS, OR AS WHERE TURNING VANES ARE INDICATED ON THE DRAWINGS, OR AS REQUIRED BY THIS SPECIFICATION, THEY SHALL BE 22 GAUGE SINGLE VANE WITH A 3/4" TRAILING EDGE TYPE, IN ACCORDANCE WITH 2005 SMACNA DUCT CONSTRUCTION STANDARDS, FIGURE 2-3. ALL SQUARE TURN ELBOWS TO HAVE TURNING VANES. 2.2 INSULATION INSULATION A. MANUFACTURER: THE PRODUCTS LISTED BELOW ARE MANUFACTURED MANUFACTURER: THE PRODUCTS LISTED BELOW ARE MANUFACTURED BY OWENS CORNING. EQUIVALENT PRODUCTS AS MANUFACTURED BY SCHULLER, KNAUF, OR APPROVED EQUAL ARE ACCEPTABLE. B. DUCTWORK: DUCTWORK: 1. ALL EXTERIOR SUPPLY AND RETURN DUCTWORK SHALL BE ALL EXTERIOR SUPPLY AND RETURN DUCTWORK SHALL BE DOUBLE WALL WITH 2”-THICK DUCT INSULATION WITH MINIMUM THICK DUCT INSULATION WITH MINIMUM INSTALLED R-VALUE OF 8.0, FLAME SPREAD=25, FUEL CONTRIBUTED AND SMOKE DEVELOPED RATING SHALL NOT EXCEED=50. 2. ALL INTERIOR SUPPLY AND RETURN DUCTWORK SHALL BE ALL INTERIOR SUPPLY AND RETURN DUCTWORK SHALL BE WRAPPED WITH BLANKET INSULATION WITH MINIMUM INSTALLED R-VALUE OF 8.0, FLAME SPREAD=25, FUEL CONTRIBUTED AND SMOKE DEVELOPED RATING SHALL NOT EXCEED=50. PART 3 - EXECUTION 3.1 METAL AND DUCTWORK INSTALLATION METAL AND DUCTWORK INSTALLATION A. DUCT SHALL BE SUSPENDED IN ACCORDANCE WITH SMACNA DUCT SHALL BE SUSPENDED IN ACCORDANCE WITH SMACNA GUIDELINES FROM STRUCTURAL PARTS OF THE BUILDING. SUPPORTS FOR RECTANGULAR AS SET FORTH IN CMC TABLE 6-7, WHEN SUSPENDED FROM ABOVE, SHALL BE INSTALLED ON TWO OPPOSITE SIDES OF EACH DUCT AND SHALL BE RIVETED, BOLTED, OR METAL SCREWED TO EACH SIDE OF THE DUCT AT NOT MORE THAN THE INTERVALS SPECIFIED. HORIZONTAL ROUND DUCTS 40” OR LESS IN OR LESS IN DIAMETER WHEN SUSPENDED ABOVE SHALL BE SUPPORTED AT INTERVALS NOT MORE THAN SET FORTH IN CMC TABLE 6-7 WITH ONE HANGER INSTALLED TO COMPLY WITH THE REQUIREMENTS BELOW. 1. DUCTS SHALL BE EQUIPPED WITH TIGHT FITTING CIRCULAR BANDS DUCTS SHALL BE EQUIPPED WITH TIGHT FITTING CIRCULAR BANDS EXTENDING AROUND THE ENTIRE PERIMETER OF THE DUCT AT EACH SPECIFIED SUPPORT INTERVAL. 2. CIRCULAR BANDS SHALL BE NOT LESS THAN 1” WIDE NOR LESS CIRCULAR BANDS SHALL BE NOT LESS THAN 1” WIDE NOR LESS WIDE NOR LESS THAN EQUIVALENT TO THE GAUGE OF THE DUCT MATERIAL IT SUPPORTS. 3. EACH CIRCULAR BAND SHALL BE PROVIDED WITH SUITABLE MEANS EACH CIRCULAR BAND SHALL BE PROVIDED WITH SUITABLE MEANS OF CONNECTING TO THE SUSPENDED SUPPORT. 4. DUCTS SHALL BE BRACED AND GUYED TO PREVENT LATERAL OR DUCTS SHALL BE BRACED AND GUYED TO PREVENT LATERAL OR HORIZONTAL SWING. B. ALL CHANGES IN DIRECTION OF DUCTS SHALL BE MADE WITH AN ALL CHANGES IN DIRECTION OF DUCTS SHALL BE MADE WITH AN INSIDE RADIUS NOT LESS THAN THE WIDTH OF THE DUCT. C. CHANGES IN SHAPE OF DUCTS SHALL BE MADE AT SMALL ANGLES, CHANGES IN SHAPE OF DUCTS SHALL BE MADE AT SMALL ANGLES, SIDES OF DUCTS SHALL DIVERGE OR CONVERGE AT AN ANGLE NOT GREATER THAN 15º WHENEVER POSSIBLE OR AS SHOWN ON THE PLANS. D. ALL BRANCH TAKE OFFS, INCLUDING INDIVIDUAL DISCHARGE OUTLETS, ALL BRANCH TAKE OFFS, INCLUDING INDIVIDUAL DISCHARGE OUTLETS, SHALL HAVE VOLUME DAMPERS. E. ALL SQUARE TURN ELBOWS GREATER THAN 45º SHALL HAVE ALL SQUARE TURN ELBOWS GREATER THAN 45º SHALL HAVE TURNING VANES AND SHALL BE CROSS-CRIMPED. F. ALL SEAMS AND TRANSVERSE JOINTS ON ALL DUCTS SHALL BE MADE ALL SEAMS AND TRANSVERSE JOINTS ON ALL DUCTS SHALL BE MADE AIRTIGHT WITH VULKEM POLYURETHANE SEALANT. DUCT TAPE WILL NOT BE ACCEPTED. CLEAN DUCT OF OIL OR OTHER FOREIGN SUBSTANCE PRIOR TO APPLICATION. ALL DUCT SYSTEMS SHALL BE SEALED TO A LEAKAGE RATE NOT TO EXCEED 5% OF THE FAN FLOW. G. ALL DUCTS SHALL BE INSTALLED IN THE LOCATIONS AND THE SIZES ALL DUCTS SHALL BE INSTALLED IN THE LOCATIONS AND THE SIZES SHOWN ON THE DRAWINGS. SHOULD IT BE FOUND THAT ANY NECESSARY DUCT DIMENSIONS HAVE BEEN OMITTED FROM THE DRAWINGS, THE CONTRACTOR SHALL NOTIFY THE ARCHITECT, WHO WILL SUPPLY THE DIMENSIONS, AND THE CONTRACTOR SHALL THEN CONSTRUCT THE DUCTS IN ACCORDANCE WITH THESE SIZES. SHOULD IT BE FOUND IMPRACTICAL TO INSTALL ANY DUCT OF THE EXACT SIZES GIVEN, A DUCT OF A DIFFERENT SHAPE BUT HAVING THE SAME RESISTANCE SHALL BE INSTALLED; THE SIZES OF THE SUBSTITUTE DUCT SHALL BE APPROVED BY THE ARCHITECT. H. ALL DUCTS SHALL BE INSTALLED TRUE TO LINE AND GRADE. ALL ALL DUCTS SHALL BE INSTALLED TRUE TO LINE AND GRADE. ALL CONCEALED HORIZONTAL DUCTS SHALL BE INSTALLED TO LEAVE THE GREATEST POSSIBLE HEADROOM UNDER THEM UNLESS FOR CLEARANCES OF OTHER WORK THEY NEED TO BE INSTALLED AT AN INTERMEDIATE PLANE. WHERE NECESSARY, CHANGES OF ELEVATION IN THE DUCTS SHALL BE MADE TO SECURE THIS RESULT, BUT NOT WITHOUT APPROVAL OF THE ARCHITECT. I. ALL DUCTWORK, MIXING DAMPERS, FIRE DAMPERS, GRILLES, ETC., ALL DUCTWORK, MIXING DAMPERS, FIRE DAMPERS, GRILLES, ETC., SHALL BE THOROUGHLY CLEANED AND FREE OF DUST AND DEBRIS BEFORE AND AFTER INSTALLATION. J. ALL ROUND BRANCH DUCT TAKE-OFF CONNECTIONS TO ALL ROUND BRANCH DUCT TAKE-OFF CONNECTIONS TO RECTANGULAR SHEET METAL DUCT SHALL BE ACCOMPLISHED USING A FLARED SPIN-IN FITTING. FITTING SIZE SHALL BE SAME SIZE OF BRANCH TAKE-OFF DUCT. 3.2 REQUIREMENTS FOR ACCEPTANCE INSPECTION REQUIREMENTS FOR ACCEPTANCE INSPECTION A. ALL OF THE FOLLOWING ITEMS MUST BE COMPLETED PRIOR TO FINAL ALL OF THE FOLLOWING ITEMS MUST BE COMPLETED PRIOR TO FINAL INSPECTIONS. NO EXCEPTIONS WILL BE MADE AND NO FINAL PAYMENT WILL BE MADE UNTIL ALL ITEMS ARE COMPLETED. B. CLEANING EQUIPMENT AND PREMISES: CLEANING EQUIPMENT AND PREMISES: 1. THOROUGHLY CLEAN ALL PARTS OF THE REGISTERS, GRILLES, THOROUGHLY CLEAN ALL PARTS OF THE REGISTERS, GRILLES, AND EQUIPMENT. EXPOSED PARTS WHICH ARE TO BE PAINTED SHALL BE THOROUGHLY CLEANED OF CEMENT, PLASTER AND OTHER MATERIALS AND ALL OIL AND GREASE SPOTS SHALL BE REMOVED. SUCH SURFACES SHALL BE CAREFULLY WIPED AND ALL CRACKS AND CORNERS SCRAPED OUT. 2. EXPOSED METAL WORK SHALL BE CAREFULLY BRUSHED DOWN EXPOSED METAL WORK SHALL BE CAREFULLY BRUSHED DOWN WITH STEEL BRUSHES TO REMOVE RUST AND OTHER SPOTS LEFT SMOOTH AND CLEAN. 3.3 DRAWINGS OF RECORD DRAWINGS OF RECORD A. THESE DRAWINGS SHALL SERVE AS WORK PROGRESS REPORT SHEETS THESE DRAWINGS SHALL SERVE AS WORK PROGRESS REPORT SHEETS AND THE CONTRACTOR SHALL MAKE ALL NOTATIONS, NEAT AND LEGIBLE, THEREON DAILY AS THE WORK PROCEEDS. THE DRAWINGS SHALL BE AVAILABLE FOR INSPECTION AT ALL TIMES AND SHALL BE KEPT AT THE JOB AT A LOCATION DESIGNATED BY THE ENGINEER. B. AT COMPLETION OF THE WORK, THESE AS_BUILT DRAWINGS SHALL AT COMPLETION OF THE WORK, THESE AS_BUILT DRAWINGS SHALL BE SIGNED BY THE CONTRACTOR INDICATING HIS APPROVAL, DATED AND RETURNED TO THE ENGINEER. 3.4 GUARANTEE GUARANTEE A. ALL WORK UNDER THIS SECTION SHALL BE GUARANTEED IN WRITING ALL WORK UNDER THIS SECTION SHALL BE GUARANTEED IN WRITING IN ACCORDANCE WITH THE GENERAL PROVISIONS. B. THE CONTRACTOR SHALL AND HEREBY DOES WARRANT THAT: THE CONTRACTOR SHALL AND HEREBY DOES WARRANT THAT: 1. ALL MATERIAL EXCEPT AS OTHERWISE NOTED SHALL BE NEW, ALL MATERIAL EXCEPT AS OTHERWISE NOTED SHALL BE NEW, FREE FROM DEFECT AND OF THE QUALITY AND RATING SHOWN OR SPECIFIED. 2. ANY DEFECT DUE TO MISSING OR IMPROPER MATERIAL OR FAULTY ANY DEFECT DUE TO MISSING OR IMPROPER MATERIAL OR FAULTY WORKMANSHIP EXISTING OR DEVELOPING DURING THE WARRANTY PERIOD SHALL BE CORRECTED AND THE RESULTING DAMAGE REPAIRED WITHOUT ADDITIONAL COST TO THE OWNER. 3. THE WARRANTY PERIOD SHALL BE ONE YEAR FROM DATE OF THE WARRANTY PERIOD SHALL BE ONE YEAR FROM DATE OF ACCEPTANCE OF THE PROJECT. 3.5 ADDITIONAL WORK ADDITIONAL WORK A. DESIGN IS BASED ON EQUIPMENT AS DESCRIBED IN THE DRAWINGS DESIGN IS BASED ON EQUIPMENT AS DESCRIBED IN THE DRAWINGS EQUIPMENT SCHEDULE. ANY CHANGE IN FOUNDATION BASES, ELECTRICAL WIRING, CONDUIT, CONNECTIONS, PIPING, CONTROLS, AND OPENINGS REQUIRED BY ALTERNATE EQUIPMENT SPECIFIED AND SUBMITTED AND APPROVED SHALL BE PAID FOR BY THIS CONTRACTOR. PIPING AND ACCESSORIES 1.1 WORK INCLUDED WORK INCLUDED A. WORK INCLUDED SHALL BE AS INDICATED ON THE DRAWINGS, WORK INCLUDED SHALL BE AS INDICATED ON THE DRAWINGS, INCLUDING BUT NOT LIMITED TO THE FOLLOWING: 1. NATURAL GAS PIPING. NATURAL GAS PIPING. 2. CONDENSATE DRAIN PIPING CONDENSATE DRAIN PIPING 3. PIPE HANGERS AND GUIDES. PIPE HANGERS AND GUIDES. PART 2 - PRODUCTS 2.1 PIPING PIPING A. NATURAL GAS PIPING, ABOVE GROUND: NATURAL GAS PIPING, ABOVE GROUND: 1. STEEL PIPE: ASTM A53, SCHEDULE 40, GALVANIZED. STEEL PIPE: ASTM A53, SCHEDULE 40, GALVANIZED. 2. FITTINGS: ANSI/ASTM B16.3, MALLEABLE IRON CLASS 250. FITTINGS: ANSI/ASTM B16.3, MALLEABLE IRON CLASS 250. 3. JOINTS: SCREWED. JOINTS: SCREWED. 2.2 CONDENSATE PIPING: CONDENSATE PIPING: A. CONDENSATE PIPING: TYPE "M" COPPER. CONDENSATE PIPING: TYPE "M" COPPER. 2.3 UNIONS UNIONS C. UNIONS FOR COPPER TUBING SHALL BE SOLDER JOINT END TYPE. UNIONS FOR COPPER TUBING SHALL BE SOLDER JOINT END TYPE. PROVIDE DIELECTRIC UNIONS AT PIPING CONNECTIONS OF DISSIMILAR MATERIALS. 2.4 PIPE SUPPORTS PIPE SUPPORTS A. PIPE HANGERS: PIPE HANGERS: 1. PIPING 1/2" THROUGH 3": FOR NON_INSULATED PIPE PIPING 1/2" THROUGH 3": FOR NON_INSULATED PIPE MALLEABLE IRON TYPE (GRINNELL FIG 104, OR APPROVED EQUAL), OR INSULATED PIPE ADJUSTABLE STEEL CLEVIS TYPE (GRINNELL FIG. 300, OR APPROVED EQUAL) WITH THREADED SOLID STEEL HANGER RODS. 2. GROUPED PIPING: TRAPEZE TYPE HANGERS WITH ROLLERS MAY GROUPED PIPING: TRAPEZE TYPE HANGERS WITH ROLLERS MAY BE USED WHERE TWO OR MORE PIPES RUN PARALLEL TO EACH OTHER. SUBMIT SHOP DRAWINGS OF ALL TRAPEZE HANGERS FOR APPROVAL BEFORE PROGRESSING WITH ANY WORK. 3. SIZING: SIZE ALL HANGERS ON INSULATED PIPING TO FIT SIZING: SIZE ALL HANGERS ON INSULATED PIPING TO FIT OUTSIDE COVERING. PART 3 - EXECUTION 3.1 PIPING INSTALLATION A. INSTALL PIPING GROUPED NEATLY, FREE OF UNNECESSARY BENDS INSTALL PIPING GROUPED NEATLY, FREE OF UNNECESSARY BENDS AND STRESSES. B. MAKE PROPER PROVISIONS FOR CONTRACTION OR EXPANSION OF MAKE PROPER PROVISIONS FOR CONTRACTION OR EXPANSION OF ALL PIPING. C. USE REDUCING FITTINGS FOR PIPE SIZE CHANGES DO NOT USE USE REDUCING FITTINGS FOR PIPE SIZE CHANGES DO NOT USE BUSHINGS. MAKE ALL CHANGES IN PIPE MATERIAL WITH PIPE ADAPTERS. D. PRIOR TO INSTALLATION OF PIPING TO OR AT MECHANICAL PRIOR TO INSTALLATION OF PIPING TO OR AT MECHANICAL EQUIPMENT, VERIFY WITH THE EQUIPMENT MANUFACTURERS AS TO CLEARANCE REQUIRED FOR MAINTENANCE, REPAIR, INSPECTION, AND PART REPLACEMENT FOR THE RESPECTIVE EQUIPMENT. INSTALL PIPING TO PROVIDE SUCH CLEARANCE SO THAT AN ABSOLUTE MINIMUM OF PIPING IS REQUIRED TO BE DISTURBED. PROVIDE MEANS FOR REMOVAL OF SUCH PIPING BY USING UNIONS, FLANGES, OR MECHANICAL COUPLINGS AT CONNECTIONS TO EQUIPMENT. E. WHERE EQUIPMENT CONNECTION SIZES ARE SMALLER THAN PIPING WHERE EQUIPMENT CONNECTION SIZES ARE SMALLER THAN PIPING SIZES INDICATED, MAKE SIZE REDUCTION IMMEDIATELY ADJACENT TO THE EQUIPMENT CONNECTIONS. FLANGES OR UNIONS AT SUCH EQUIPMENT CONNECTION POINTS MAY BE THE SAME SIZE AS THE EQUIPMENT CONNECTIONS. F. PROPERLY GRADE ALL WATER PIPING TO PROVIDE FLOW, AIR PROPERLY GRADE ALL WATER PIPING TO PROVIDE FLOW, AIR ELIMINATION AND DRAINAGE. DO NOT INSTALL PIPING SO AS TO CREATE NOISE OR FLOW IMPAIRMENT. DO NOT USE "BUTT OR BULLHEAD" TEE IN WATER FLOW; THAT IS TO SAY, DO NOT USE TEE FITTINGS WITH WATER FLOWING INTO TEE AT THE SIDE OUTLET AND WATER FLOWING OUT OF TEE FROM THE REMAINING TWO END OUTLETS, OR WITH WATER FLOWING INTO TEE AT TWO END OUTLETS AND WATER FLOWING OUT OF TEE FROM SIDE OUTLET. G. SEPARATELY PIPE EQUIPMENT DRAIN, WITH SHUT_OFF VALVE, TO SEPARATELY PIPE EQUIPMENT DRAIN, WITH SHUT_OFF VALVE, TO NEAREST FLOOR SINK/DRAIN. H. INSTALL CHROME PLATED SPLIT ESCUTCHEONS AROUND ALL PIPES INSTALL CHROME PLATED SPLIT ESCUTCHEONS AROUND ALL PIPES PASSING THROUGH FINISHED WALLS, FLOORS AND CEILINGS. I. SLEEVE AND SEAL AIR AND WATER TIGHT ALL PIPING PASSING SLEEVE AND SEAL AIR AND WATER TIGHT ALL PIPING PASSING THROUGH EXTERIOR WALLS, THROUGH PLENUM OR FIRE WALLS ABOVE CEILINGS AND ELSEWHERE AS DESIGNATED. ALL SEALERS SHALL BE WATERPROOF AND FIREPROOF. J. ALL PIPING SHALL BE ISOLATED FROM PIPE HANGERS, CLAMPS, ETC. ALL PIPING SHALL BE ISOLATED FROM PIPE HANGERS, CLAMPS, ETC. WITH 1" WIDE STRIPS OF HAIR FELT OR PIPE ISOLATORS. 3.2 SOLDERED OR BRAZED JOINTS SOLDERED OR BRAZED JOINTS A. SOLDER OR BRAZE ABOVEGROUND COPPER LINES. CUT TUBING SOLDER OR BRAZE ABOVEGROUND COPPER LINES. CUT TUBING ENDS SQUARE AND REMOVE ALL FINS AND BURRS; DO NOT USE DENTED OR OTHERWISE DAMAGED TUBING. CLEAN OUTSIDE OF TUBING ENDS AND RECESSED AREA INSIDE OF FITTINGS BY BURNISHING UNTIL ALL DIRT, OXIDE AND OTHER FOREIGN SUBSTANCES ARE REMOVED. USE EITHER FINE CROCUS CLOTH OR A WIRE FITTING BRUSH MADE ESPECIALLY FOR THIS TYPE OF WORK. APPLY A LIGHT COATING OF FLUX TO BURNISHED TUBING AND FITTING JOINT SURFACES, THEN INSERT TUBING TO FULL DEPTH OF FITTING AND EXPELLED ALL FLUX. ALLOW JOINTS TO COOL SLOWLY AND REMOVE FLAME MARKS AND EXCESS FLUX. BEFORE MATING JOINTS TO VALVES, REMOVE STEMS AND WASHERS. 3.3 PIPE HANGERS AND SUPPORTS PIPE HANGERS AND SUPPORTS A. HORIZONTAL PIPING SHALL BE SUPPORTED AS FOLLOWS: USE BEAM HORIZONTAL PIPING SHALL BE SUPPORTED AS FOLLOWS: USE BEAM CLAMPS FOR ATTACHMENT TO STRUCTURAL STEEL SURFACES AND EXPANSION TYPE INSERTS FOR ATTACHMENT TO CONCRETE SURFACES. CLAMPS AND INSERTS SHALL BE SIZED FOR THE REQUIRED HANGER ROD AND COMPLY WITH ALL APPLICABLE CODES AND SAFETY REGULATIONS. THE USE OF "C" CLAMPS DESIGNED TO ATTACH THREADED ROD TO ONE SIDE OF A STEEL BEAM FLANGE SHALL NOT BE USED UNLESS THEY ARE PROVIDED WITH A RESTRAINING STRAP, OR HOOK TO THE OPPOSITE BEAM FLANGE. B. HANGERS: ADJUSTABLE WROUGHT STEEL CLEVIS. HANGERS: ADJUSTABLE WROUGHT STEEL CLEVIS. C. DESIGN HANGERS TO IMPEDE DISENGAGEMENT BY MOVEMENT OF DESIGN HANGERS TO IMPEDE DISENGAGEMENT BY MOVEMENT OF SUPPORTED PIPE. D. SUPPORT HORIZONTAL STEEL AND COPPER PIPING AS FOLLOWS SUPPORT HORIZONTAL STEEL AND COPPER PIPING AS FOLLOWS NOM PIPE DIST BETWN HANGER ROD SIZE (IN.) SUPPORT (FT.) DIA (IN.) 1/2 TO 1-1/2 6 3/8 6 3/8 6 3/8 3.4 IDENTIFICATION OF PIPING AND EQUIPMENT IDENTIFICATION OF PIPING AND EQUIPMENT A. PIPING SHALL BE IDENTIFIED WITH SETON OR BRADY PIPE MARKERS. PIPING SHALL BE IDENTIFIED WITH SETON OR BRADY PIPE MARKERS. LENGTH OF COLOR FIELD SHALL BE A MINIMUM OF 12" IN LENGTHS. HEIGHT OF LETTER SHALL BE A MINIMUM OF 1-1/4". MARKERS SHALL ALSO HAVE FLOW DIRECTION ARROWS. PROVIDE IDENTIFICATION A MINIMUM OF EVERY 10'-0”. . B. VALVE TAGS: ATTACH A 1" DIAMETER x 18 GAUGE BRASS TAG TO VALVE TAGS: ATTACH A 1" DIAMETER x 18 GAUGE BRASS TAG TO EACH VALVE WITH A BRASS CHAIN. IDENTIFY EACH TAG BY A STAMPED 1/2" HIGH NUMBER. MOUNT A VALVE INDEX LIST IN EACH MECHANICAL ROOM ON 1/4" PLYWOOD BOARD AND WOOD FRAME WITH 1/8" THICK CLEAR PLEXIGLASS COVER. LIST TO CONTAIN VALVE NUMBER, LOCATION, FUNCTION, NORMAL POSITION AND ANY SPECIAL REQUIREMENTS.
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