Architectural · A-2B5CD

Steel Stud Partition Wall Types and STC Ratings

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A standard interior steel stud partition assembly consists of one layer of five-eighths inch gypsum board on each side. A sound attenuation blanket is installed within the cavity where scheduled, and half-inch resilient furring channels are applied to one side. The partition schedule outlines stud sizes of two and one-half inches, three and five-eighths inches, and six inches with corresponding basic partition thicknesses of four and one-quarter inches, five and three-eighths inches, and seven and three-quarters inches. Sound transmission class ratings are provided along with Underwriters Laboratories design numbers for fire-rated and non-rated assemblies extending to the structure above.

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