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DocuSign Envelope ID: B94F2D40-3B3C-47A7-86C2-6F1 B4F92C62C <br /> Orange County Emergency Services Building Construction Documents <br /> G. Additionally, ductwork shall be supported at changes of direction, at branch duct connections, tee <br /> fittings and etc. <br /> H. All ductwork accessories such as dampers shall be independently supported. <br /> 3.02 HANGERS AND SUPPORTS <br /> A. Hanger materials: smacna approved duct supports shall be utilized in accordance with smacna <br /> standards. <br /> B. Penetration into the exterior duct system is not permitted. <br /> C. Trapeze and riser supports: steel shapes complying with astm a 36/a 36m. <br /> 3.03 EXTERIOR DUCT SUPPORTS: <br /> A. Meet all SMACNA and ASHRAE requirements. <br /> B. Supports to be installed on the outside finished duct system <br /> C. Supports to be manufactured by PHP system/design, Miro, Caddy or approved equal. <br /> 3.04 STORAGE AND HANDLING <br /> A. Care shall be exercised in the handling and transportation of ductwork sections in order to prevent <br /> physical damage. <br /> B. All ductwork sections shall be stored under cover, clear of the ground or roof and protected from <br /> the weather and sunlight by an opaque and light colored waterproof material. In cases where the <br /> ductwork sections are to be stored for prolonged periods, the open ends of the ductwork sections <br /> shall be sealed with a polythene sheet or other suitable material to prevent the ingress of foreign <br /> matter. <br /> END OF SECTION 233116 23 31 16 <br /> PDC Project 18102 EXTERIOR 2331 16 - 3 <br /> 12/17/2018 PRE-MANUFACTURED <br /> PRE-INSULATED DUCTS <br />