How to Specify ClarkWestern

 

 

 

 

 

 

1.X   QUALITY ASSURANCE

1. Fire-Test-Response Characteristics: For fire-resistance-rated assemblies that incorporate non-structural steel framing, provide materials and construction identical to those tested in assembly indicated according to ASTM E119 by an independent testing agency. Products used in the assembly shall carry a classification label from a testing laboratory acceptable to authority having jurisdiction.
   
   (Retain paragraph below where framing is part of STC-rated assemblies.
   Indicated design designations of specific assemblies on Drawings.)
   
2. STC-Rated Assemblies:  For STC-rated assemblies, provide materials and construction identical to those tested in assembly indicated according to ASTM E90 and classified according to ASTM E 413 by an independent testing agency.

2.3   COMPONENTS

1. Non-structural Studs: Cold-formed galvanized steel C-studs, ClarkWestern UltraSTEEL® drywall studs, in conformance with ASTM C-754 for conditions indicated below:
   1. Flange Length: 1 1/4 inch (32mm) 125 flange.
   2. Web Depth: As indicated on drawings.
   3. Designation: 25ga equivalent drywall stud.
      Minimum Delivered Thickness: 0.0179 inches (0.45mm)
   4. Designation: 20ga equivalent drywall stud.
      Minimum Delivered Thickness: 0.0296 inches (0.75mm)
   5. Members that can show independently verified test performance that meets the limiting height values listed in C 754 (need not meet the minimum thickness set forth in 4.3 or the minimum section properties set forth in 8.1).
2. Non-structural Track: Cold-Formed galvanized steel runner tracks, ClarkWestern UltraSTEEL® drywall runner track, in conformance with ASTM C-754 for conditions indicated below:
   1.          Flange Length: 1 1/4 inch (32 mm) T125 flange.
   2.          Web Depth: Track web to match stud web size.
   3.          Minimum Material Thickness: Track thickness to match wall stud thickness.