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�� <br /> ;�;, <br /> 1.04 SYSTEM DESCRIPTION <br /> A. Acoustical Attenuation for Interior Partitions: 50 STC in accordance with ASTM <br /> E90. <br /> B. Shaft Wa11: Perform to the following: <br /> 1. Acoustical Attenuation: 50 STC in accordance with ASTM E90. <br /> 1.05 REGULATORY REQUIREMENTS <br /> A. Conform to UBC code for fire rated assemblies as follows: <br /> 1. Fire I�ated Partitions: Listed assembly by GA File #'s: WP3812 (party <br /> walls): WP3230 (Corridorfunit watls, Elevator Shaft and Trash Room <br /> Walls). � <br /> 2. Fire Rated Ceiling: Listed assembly by GA File#RC 2601 (1)hour. <br /> 3. Fire Ra.ted Floar/Ceiling assembly: UL Design L528 (1)how. <br /> .� <br /> PART 2 PRODUCTS <br /> 2.01 MANUFACTURERS -GYPSUM BOARD SYSTEM �� <br /> A. U.S.G.,National Gypsum Co., Georgia-Pacific. <br /> Z.OZ FRAMING MATERIALS � <br /> A. Furring,Framing and Accessories: ASTM C645. <br /> B. Fasteners: A5TM C514. 3 <br /> C_ Anchorage to Substrate: Tie wire, nails, screws and other metal supports, of type i� <br /> and size to suit application;to rigidly secure materials in place. <br /> D. Adhesive: ASTM C557. � <br /> 2.03 G�PSUM BOARD MATERIALS <br /> A Fire Rated Gypsum Board: ASTM C36; fire resistive type, iJL rated; 5/8 inch <br /> thick, maximum permissible length;ends square cut,ta.pered edges. <br /> �� <br /> B. Moisture Resistant Gypsum Board: AST�VI C630; S/8 thick, maximum permissible <br /> length�8nds square cut tapered edges. � <br /> C. Gypsum Sheathin�Board: ASTM C79;moisture resistant and fire resistant type; '/2 <br /> inch thick, maximum permissible length; ends square cut, square edges; water <br /> repellent paper faces. <br /> D. �ementitious Backing Board: High density, glass fiber reinforced, lh inch thick; 2 <br /> inch wide,coated glass fiber tape for joints and co�ners. <br /> 2.04 ACCESSORIES `' <br /> A. Acoustical �nsulation: ASTM C665; preformed glass fiber, fi-iction fit type, <br /> unfaced, 3-l./2 inch thick. <br /> �. <br /> Division 9-Section 09260 ,� <br /> Page 2 of 4 <br /> � <br />