05-D Animal Shelter Contract - Laserfiche WebLink

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'5 DIVISION 15-8 HEATING AND A/C DUCT WORK: Furnish and erect all ducts, branches, etc., as necessary to make the complete system as shown on the drawings. All ducts shall be fabricated from Armco, or approved equal, galvanized steel sheets in accordance with the following: Ducts with the longest side not more than 12" in width . . . . . . . . . . . . . . . . .26 Ga. Ducts with longest side 13" to 30" In width . . . . . . . . . . . . . . . . . . .24 Ga. Round ducts up to 13" in diameter with Crimped and beaded joint and three screws to a joint . . . . . . . . . . . . . . . . . .26 Ga. ' Round ducts 19" to 22" in diameter with crimped and beaded joint and four screws to a joint . . . . . . . . . . . . . . . . . .24 Ga. All Wyes splits and reducers in round duct shall be factory made. All horizontal ducts shall be rigidly supported•from the structure by means of strap hangers. Where necessary to change the size or shape oP a duct, the Architect must be consulted for re-sizing or re-routing. All rectangle ducts shall be cross broken for stiffness. All joints in ductwork shall be tapped with approved type duct tape. All taps in plenum shall be caulked with silicone caulk to prevent air loss. GRILLES, REGI3TERS AND DIFFUSERS: This Contractor shall furnish and install all ceiling outlets, exhaust registers, supply and return grilles and registers, and air control devices, as are indicated on the drawings and specifications herein. Grilles, registers and outlets shall be supplied in factory finisH Dover-white enamel. Ceiling outlets shall be furnished and installed with suitable frames and flanges, which will work to the particular ceiling material and permit proper adjustment , and service. IN3ULATION: All insulation shall be securely and neatly applied according to manufacturer's recommendations. AIR DUCTS (INDOOR) Shall be insulated with 2" thick 44 lb. per cubic foot density Owens-Corning Eiberglass, or approved equal, flexible duct insulation with factory adhered reinforced foil faced Kraft paper. Insulation shall be pulled tight and stapled at all joints. Insulation shall be glued and anchored with mechanical fasteners as recommended by manufacturer. DRAIN PIPING: Provide 1" condensate drain with clean outs and extend to plumbing outlet provided by Plumber. Drain shall be schedule 1" copper using approved fittings, primer and cement. , 7 G~'