Fire-Resistant Assemblies - USG Corporation
Fire-Resistant Assemblies - USG Corporation
Fire-Resistant Assemblies - USG Corporation
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8 1/2˝<br />
A<br />
2 Hour <strong>Fire</strong>-Rated Construction Chase Walls Acoustical Performance Reference<br />
Construction Detail Description Test Number STC Test Number Index<br />
wt. 12 • 5/8" Sheetrock <strong>Fire</strong>code Core gypsum<br />
panels, each side or Fiberock panels<br />
UL Des U420 52 RAL-TL-76-162<br />
A-41<br />
– 1-5/8" 25 gauge steel studs 24" o.c. in two<br />
57 RAL-TL-76-156<br />
12"<br />
rows spaced 6-1/4" apart<br />
– 5/8" gypsum panel gussets or steel runner<br />
braces spanning chase screw-attached to studs<br />
– face layer joints finished<br />
Based on 3-1/2" insulation one side<br />
8 ½˝<br />
8 ½"<br />
Partitions<br />
Steel Framed<br />
• 5/8" Sheetrock <strong>Fire</strong>code Core gypsum panels<br />
– 2-1/2" 25 gauge steel studs 24" o.c. min 1"<br />
apart on separate runners<br />
– bracing along same row of studs<br />
– optional insulation<br />
• 5/8" Sheetrock <strong>Fire</strong>code Core gypsum panels<br />
– 2-1/2" 25 gauge steel studs 24" o.c. min 1"<br />
apart on separate runners<br />
– bracing along same row of studs<br />
– optional insulation<br />
3 Hour <strong>Fire</strong>-Rated Construction<br />
wt. 13 • 1/2" Sheetrock <strong>Fire</strong>code C Core gypsum panels<br />
– 1-5/8" 25 gauge steel studs 24" o.c. in two rows<br />
– steel truss member<br />
– gypsum panel gussets or steel runner braces<br />
8<br />
spanning chase screw-attached to studs<br />
– face layer joints finished<br />
– 2 hr. rating applies with two layers panels<br />
each side<br />
– 1 hr. rating applies with single layer 5/8"<br />
panels each side<br />
1 ⁄4"<br />
wt. 13 • 3/4" Sheetrock Ultracode Core gypsum panels<br />
– 1-5/8" 25 gauge studs 24" o.c. in two rows<br />
– steel truss member<br />
– gypsum panel gussets or steel runner braces<br />
8<br />
spanning chase screw-attached to studs<br />
– face layer joints finished<br />
1 ⁄4"<br />
16 <strong>USG</strong> <strong>Fire</strong>-<strong>Resistant</strong> <strong>Assemblies</strong><br />
UL Des U493 A-42<br />
UL Des U493 66 STC-050819<br />
Based on 3-1/2” glass fiber insulation in<br />
both rows of studs<br />
A-43<br />
UL Des U436 A-44<br />
UL Des U436 A-45