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Fire Rated System Design - UL G540

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UL G540

Steel Truss

Fire Rating

hour

Restrained‐2 hour


STC / Sound Test

N/A

System Thickness

N/A

Fire Rating

Unrestrained‐2 hour

System Thickness

N/A

  • Steel Open Web Truss - null
  • Floor Substrate - Min. 2 in. (51 mm) thick concrete
  • Structural Members - Light gauge steel truss max. 48 in (1218) OC
  • Ceiling Support - Resilient channels spaced 12 in. (305 mm) OC when batts and blankets are used
  • Batts and Blankets - Mineral wool or fiberglass insulation
  • Finished Ceiling - Two layers of 5/8 in. (16 mm) thick gypsum board
Remarks
  • Stud size is minimum unless otherwise stated in design.
  • For the most up-to-date information refer to the UL Fire resistance directory G540 ·