Page 347 - CertainTeed Ceilings E-Catalog

UL FIRE RESISTIVE ASSEMBLIES
Fire ratings specified in this section pertain to UL Classifications which are based on standard test method ANSI/UL 263, ASTM E 119, UBC 7-1, NFPA 251, CAN/ULC – S101M
ROOF/CEILING DRYWALL ASSEMBLIES
TYPE OF CONSTRUCTION
BUR, modified or single-ply over steel deck, steel joists
BUR, modified or single-ply over steel deck, steel joists
BUR, modified or single-ply over steel deck, steel joists
BUR, modified or single-ply over steel deck, steel joists
BUR, modified or single-ply over steel deck, steel joists
BUR, modified or single-ply over steel deck, steel joists
BUR, modified or single-ply over steel deck, steel joists
1-1/2 P506
1 P508
1 P509
1-1/2 P510
1-1/2 P513
2 P514
2 P560
NUMBER OF DRYWALL LAYERS
1
1
1
1
1
1
1
NUMBER OF DRYWALL LAYERS
1
1
NUMBER OF DRYWALL LAYERS
1
PENETRATION (FT2/100 FT2)
24
24
24
24
24
24
15.3
PENETRATION (INCHES2/100 FT2)
113
144
144
113
144
255
54
DRYWALL GRID SYSTEM
CertainTeed DWS1
CertainTeed DWS1
CertainTeed DWS1
CertainTeed DWS1
CertainTeed DWS1
CertainTeed DWS1
CertainTeed DWS1
DRYWALL GRID SYSTEM
CertainTeed DWS1
CertainTeed DWS2
DRYWALL GRID SYSTEM
CertainTeed DWS1
MAXIMUM TIME RATING (HRS)
UL DESIGN NUMBER
CONCRETE THICKNESS (INCHES)
—
—
—
—
—
—
—
MINIMUM
DRYWALL THICKNESS (INCHES)
5/8
5/8
5/8
5/8
5/8
5/8
5/8
MINIMUM
DRYWALL THICKNESS (INCHES)
1/2
1/2
MINIMUM
DRYWALL THICKNESS (INCHES)
5/8
MAXIMUM FIXTURE MAXIMUM DUCT
FLOOR/CEILING DRYWALL ASSEMBLIES
MAXIMUM
TIME UL
TYPE OF RATING DESIGN CONSTRUCTION (HRS) NUMBER
Concrete on metal lath
or corrugated steel 2 G021 deck, steel joists
Concrete on metal lath
or corrugated steel 1 G021 deck, steel joists
ROOF/CEILING DRYWALL ASSEMBLIES
CONCRETE THICKNESS (INCHES)
2-1/2
2-1/2
CONCRETE THICKNESS (INCHES)
—
MAXIMUM FIXTURE MAXIMUM DUCT
PENETRATION (FT2/100 FT2)
15.3
15.3
PENETRATION (INCHES2/100 FT2)
54
54
TYPE OF CONSTRUCTION
BUR, modified or single-ply over steel deck, steel joists
PENETRATION (FT2/100 FT2)
15.3
PENETRATION (INCHES2/100 FT2)
54
MAXIMUM TIME RATING (HRS)
2
UL DESIGN NUMBER
R503
MAXIMUM FIXTURE MAXIMUM DUCT
1. Maximum 50" cross tee
2. Maximum 72" cross tee
The information contained in this table is intended only to be used as a guide. For detailed time-rated assembly information, refer to the latest Underwriters Laboratories Inc. Fire Resistance Directory (ul.com).
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TECHNICAL INFORMATION