Fire-Resistant Assemblies SA-100 - CGC

E
Structural Fireproofing
Column
1-3 Hour Fire-rated Construction Reference
Construction Detail Description ARL Index
Varies One to four layers 12.7 mm (1/2�) SHEETROCK FIRECODE C and/or 15.9 mm (5/8�) E-1
SHEETROCK FIRECODE or 19.1 (3/4�) SHEETROCK ULTRACODE CORE Panels
around column to attain total thickness necessary for applicable fire rating, column
shape and size (see table below). 41 mm (1-5/8�) steel studs at column corners. Steel
angle corner supports and tie wire used for 3 and 4 layer construction—1 to 3 hours
UL Des X528
Column shape and Total thickness of
minimum size Fire rating panel layers Gypsum panel layers (see note) Corner details
W4X13 1 hour 25.4 mm (1�) 2 layer 12.7 mm (1/2�) B
2 hour 38.1 mm (1-1/2�) 3 layer 12.7 mm (1/2�) C
or 2 layers 19.1 mm (3/4�) B
3 hour 57.2 mm (2-1/4�) 2 layer 12.7 mm (1/2�) + 2 layer 15.9 mm (5/8�) D
or 3 layers 19.1 mm (3/4�) C
W6X15.55 1 hour 25.4 mm (1�) 2 layer 12.7 mm (1/2�) B
2 hour 38.1 mm (1-1/2�) 3 layer 12.7 mm (1/2�) C
or 2 layers 19.1 mm (3/4�) B
3 hour 57.2 mm (2-1/4�) 2 layer 12.7 mm (1/2�) + 2 layer 15.9 mm (5/8�) D
or 3 layers 19.1 mm (3/4�) C
W10X49 1 hour W10X49) 1 hour 12.7 mm (1/2�) 1 layer 12.7 mm (1/2�) A
2 hour 28.8 mm (1 1 ⁄8�) 2 hour 28.6 mm (1-1/8�) 1 layer 12.7 mm (1/2�) + 1 layer 15.9 mm (5/8�) B
or 2 layers 19.1 mm (3/4�) B
3 hour 47.6 mm (1-7/8�) 3 layer 15.9 mm (5/8�) C
or 3 layers 19.1 mm (3/4�) C
Tube 4x4x0.188 1 hour 25.4 mm (1�) 2 layer 12.7 mm (1/2�) B
2 hour 41.3 mm (1-5/8�) 2 layer 12.7 mm (1/2�) + 1 layer 15.9 mm (5/8�) C
3 hour 63.5 mm (2-1/2�) 4 layer 15.9 mm (5/8�) D
Tube 8X8X0.250 1 hour 15.9 mm (5/8�) 1 layer 15.9 mm (5/8�) A
NOTE (1) 12.7 mm (1/2�) thick panels are SHEETROCK FIRECODE C
15.9 mm (5/8�) thick panels are SHEETROCK FIRECODE
19.1 mm (3/4�) thick panels are SHEETROCK ULTRACODE CORE board
52 CGC Fire-Resistant Assemblies