KNAUF ASTM

  DRYWALL PARTITIONS ASTM

ASTM C 1396 describes two types of gypsum board- regular and type X – each providing a different degree of fire resistance.

Type X (special fire-resistant) gypsum board, when tested in accordance with Test Methods E 119, shall provide the following minimum fire resistance for the assemblies described: One hour for a 5⁄8-in. [15.9-mm] thickness applied to a partition in a single-layer application on each side of 3 5⁄8-in. [92-mm] deep non-loadbearing galvanized steel studs complying with Specification C645, spaced 24 in. [610 mm] on center.

The 5⁄8-in. [15.9-mm] thick gypsum board 48 in. [1220mm] wide shall be attached using 1-in. [25-mm] long drywall screws spaced 8 in. [203 mm] on center along the edges and ends, and 12 in. [304 mm] along intermediate studs. All joints shall be oriented parallel to and located over studs and staggered on opposite sides of the assembly.

Two hours for a 1⁄2-in. [12.7-mm] thickness applied to a partition in a double-layer application on each side of 2 1⁄2-in. [64-mm] deep non-loadbearing galvanized steel studs complying with Specification C 645, spaced 24 in. [610 mm] on center. The 48-in. [1220-mm] wide base layer shall be attached using 1-in. [25-mm] long drywall screws spaced 12 in. [304 mm] on center along board edges, ends, and along intermediate studs. Joints shall be oriented parallel to and located over studs and staggered on opposite sides of the assembly.

The 48-in. [1220-m] wide face layer shall be attached using 1 5⁄8-in. [41-mm] long drywall screws spaced 12 in. [304 mm] along board edges, ends, and along intermediate studs. Joints shall be oriented parallel to and located over studs, offset 24 in. [610 mm] from the base layer joints, and staggered on opposite sides of the assembly.

Type X Gypsum boards manufactured by Knauf LLC are identified as GW-TX, GB-WRTX, coreboard, GB-WR Mold, These boards are all certified and listed by Intertek.

Systems Performance Fire Resistance Sound Reduction Partition Width Maximum Height
KW A 111

Economical solution

Fast space division

Up to 1 Hour STC 42 – 47 67 – 184 mm Up to 7.99 m
KW A 112

Optimum solution

Meets most design

criteria

Small footprint

High fire resistance

 

Up to 2 Hour

STC 51 – 54 92 – 216 mm Up to 9.59 m
KW A 115

High acoustic

performances

High fire resistance

Optimum for

separation walls

 

Up to 2 Hour

STC 62 – 65 184 – 373 mm Up to 7.25 m
KW A 116

Accommodates large

service runs

High fire resistance

Adjustable footprint

High walls solution

 

Up to 2 Hour

STC 56 – 62 189 – 378 mm Up to 20.00 m
KW A/S 116

 High acoustic

performances

High fire resistance

optimum for

separation walls

 

Up to 2 Hour

STC 60 – 66 189 – 378 mm Up to 7.25 m

For More Details/Enquiries,please contact Gemini Building Materials – Sales@geminiae.ae/Tel:02 6740505

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