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Fire Rated System Design - UL G205

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UL G205

Steel Bar Joist

Fire Rating

hour

Restrained‐2 hour


Restrained‐2 hour


STC / Sound Test

N/A

System Thickness

N/A

Fire Rating

Restrained‐2 hour

Unrestrained‐2 hour

System Thickness

N/A

Steel Bar Joist
Floor Substrate - Min. 2-1/2 in. (64 mm) thick concrete
Steel Deck - Min. 9/16 in. (14 mm) deep 28 ga. corrugated steel deck
Structural Members - Steel beam min. W6x12, steel bar joists spaced max. 48 in. (1219 mm) OC
Finished Ceiling - Acoustical ceiling tiles
  • Steel Bar Joist - null
  • Floor Substrate - Min. 2-1/2 in. (64 mm) thick concrete
  • Steel Deck - Min. 9/16 in. (14 mm) deep 28 ga. corrugated steel deck
  • Structural Members - Steel beam min. W6x12, steel bar joists spaced max. 48 in. (1219 mm) OC
  • Ceiling Support - Suspension system
  • Finished Ceiling - Acoustical ceiling tiles
    • Panel Dimensions nom. in. - 24 in. by 24 in. by 3/4 in. [609 x 609 x 19]
    • Panel Dimensions nom. in. - 24 in. by 24 in. by 5/8 in. [609 x 609 x 16]
    • Panel Dimensions nom. in. - 24 in. by 48 in. by 3/4 in. [609 x 1219 x 19]
Remarks
  • Stud size is minimum unless otherwise stated in design.
  • For the most up-to-date information refer to the UL Fire resistance directory G205 ·