These partition details illustrate metal stud wall construction with varying finish layers and acoustical treatments. The non-rated partition utilizes metal studs framed with one layer of gypsum board and one layer of one-half-inch Homasote, incorporating acoustical insulation within the stud cavity. The rated partition assemblies reference Underwriters Laboratories design U465 for one-hour fire resistance ratings and specified STC ratings. Acoustical insulation is positioned between layers of gypsum board on each side of the framing members.
ACOUSTICAL INSULATION AT (1) LAYER GYPSUM BOARD EACH SIDE UL: 61-- 1-HR RATED PARTITION U465 UL: STC: 62-- 1-HR RATED ACOUSTICAL PARTITION U465 45-49 MTL STUD (3 5/8" CHANNEL STUD MIN @ 24" O.C. MAX) 47-- NON-RATED PARTITION - GYP AND HOMASOTE MTL STUD (1) LAYER GYPSUM BOARD (1) LAYER 1/2" HOMASOTE ACOUSTICAL INSULATION, AT 48-- NON-RATED ACOUSTICAL PARTITION - GYP AND HOMASOTE 48--
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