1/2” (12.7 mm) ToughRock® Fireguard C® or 1/2” (12.7 mm) DensArmor Plus® Fireguard C® gypsum panels applied perpendicular to resilient channels 24” (610 mm) o.c. with 1” (25 mm) Type S drywall screws 12” (305 mm) o.c. Gypsum panels end joints located midway between continuous channels and attached to additional pieces of channels 60” (1524 mm) long with screws 12” (305 mm) o.c. Resilient channels applied perpendicular to 2” x 10” wood joists 16” (406 mm) o.c. with 2” (51 mm) 6d coated nails. Wood joists supporting 1” (25.4 mm) nominal wood subfloor and 1” (25.4 mm) nominal wood finish floor, or 19/32” (15.1 mm) plywood finished floor with long edges T&G and 15/32” (11.9 mm) interior plywood with exterior glue subfloor perpendicular to joist with joints staggered.
