ASTM C955-2015 螺钉安装石膏板制品及金属熟石膏基板用承重(横向及轴向)钢立筋、滑槽（轨道）、支柱或搁栅撑的规格 Standard Specification for Load-Bearing (Transverse and Axial) Steel Studs,Runners (Tracks),and Bracing or Bridging for Screw Application of Gypsum Panel Products and Metal Plaster Bases

1.1 This specification covers steel studs, runners (tracks), and bracing or bridging (with a base steel minimum thickness of not less than 0.0329 in. (0.836 mm)) for screw application of gypsum panel products and metal plaster bases in load-bearing (transverse and axial) construction assemblies. Steel of lesser thickness shall be permitted in additional engineered products. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.