In light gauge construction, the buildability of cold formed sections may be greatly improved by the provision of web openings ,which allows easy integration of building sewices within the section depth. In order to assess the structural implication of web openings, to cold formed sections, the reduction in the web crippling and the load resistances of perforated sections were investigated. The effects of different opening sizes and shapes, and of different forms of stiffening around the openings ,were also studied. A total of six test series with 57 web crippling and 41 beam tests were carried out on cold formed sections with single and multiple web openings; the results of the tests are presented in detail.
K.F. Chung