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'I <br />r <br />t <br />n <br />c <br />ri <br />[ <br />t <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />c. <br />D. <br />E. <br />3.02 <br />A. <br />B. <br />A. <br />”71 <br />Fittings, valve bodies and flanges for pipe sizes 4" and <br />smaller shall be finished with mineral fiber cement to a <br />thickness or adjoining pipe insulation. Over 4" size shall <br />be insulated with 3/4 lb. density fiberglass blanket com­ <br />pressed to a thickness equal to adjoining pipe insulation <br />or mitered pipe insulation segments or premolded fittings <br />jute twine* fiberglass tape or 18 gauge galvanized steel <br />wire and finished with a smooth coat of fiber cement. <br />After the cement is dry, fittings shall be finished with <br />a 4 oz. Osnaburg canvas or equal, smoothly adhered with a <br />suitable adhesive. Cold vater fittings shall be sealed with <br />vapor barrier mastic over the canvas. <br />In place of the method outlined in Paragraphs 3.02C and <br />3.02D, the contrar or, at his option, may use PVC insulated <br />fitting covers ouc..ined in Article 2.02, Code II and de­ <br />scribed in 3.01.E.1 and 3.01.E.2. <br />1. <br />2. <br />The precase insulation shall be applied to the fitting <br />to make a snug fit of equal thickness against the ad­ <br />joining pipe insulation. The fitting covers shall be <br />secured by stapling and taping the ends to the adjoining <br />pipe insulation. <br />On cold water piping, all cover seam edges shall be addi <br />tionally sealed with vapor barrier adhesive and ends <br />wrapped with vapor barrier tape overlapping the adjacent jacket. •' <br />CONDENSATE DRAIN LINES AND UNDERGROUND WELL WATER MAINS <br />All runouts from cooling coil drain pans shall be insulated <br />with foam platic pipe insulation, 1/2" thick, of grades men <br />tioned in Article 2.08, Code VIII. <br />The pipe or tubing may be insulated wherever possible by <br />slipping the molded insulation over the lines. Lines already <br />connected shall be insulated by slitting the tubular insulation <br />section and applying them around piping or tubing. All butt <br />ends and longitudinal joints shall be sealed with O.C. 500, <br />JM 57, C.M.C. 17-462. All fittings shall be insulated with <br />fabricated sections of tubing insulation, nesting sizes, <br />mitering joints and sealed with adhesive. Vapor barrier <br />adhesive shall be applied to all seams and joints sealed <br />in accordance with the manufacturer's recommendations to <br />obtain proper adhesion. Where flexible foamed plastic tubular <br />insul^ation is used, the section at each pipe support shall <br />be rigid foam plastic of the same thickness. <br />3.03 SOUND INSULATION <br />Sound insulation shall be applied to the interior of all <br />transfer ducts and exhaust ducts for a distance equal to <br />10 duct diameter equivalents measured from fan inlets back <br />through the duct system and in the case of supply ducts. <br />15180-5