. ▁SE CB . Struct ural ▁Engine er ▁Magazine . ▁September ▁ 2 0 0 9 . ▁page ▁ 2 6 ▁▁ ▁Application ▁in ▁buildings ▁▁▁ ▁Cold - formed ▁steel ▁fr aming ▁▁ ▁Cold - formed ▁steel ▁fr aming ▁( CF SF ) ▁refers ▁specifically ▁to ▁members ▁in ▁light - frame ▁building ▁construction ▁that ▁are ▁made ▁entirely ▁of ▁sheet ▁steel , ▁formed ▁to ▁various ▁shapes ▁at ▁ambient ▁temper atures . ▁ ▁The ▁most ▁common ▁shape ▁for ▁C FS F ▁members ▁is ▁a ▁li pped ▁channel , ▁although ▁“ Z ”, ▁“ C ”, ▁tub ular , ▁“ hat ” ▁and ▁other ▁shapes ▁and ▁variations ▁have ▁been ▁used . ▁ ▁The ▁building ▁elements ▁that ▁are ▁most ▁often ▁fr amed ▁with ▁cold - formed ▁steel ▁are ▁flo ors , ▁roof s , ▁and ▁walls , ▁although ▁other ▁building ▁elements ▁and ▁both ▁struct ural ▁and ▁decor ative ▁assemb lies ▁may ▁be ▁steel ▁fr amed . ▁ ▁Although ▁cold - formed ▁steel ▁is ▁used ▁for ▁several ▁products ▁in ▁building ▁construction , ▁fr aming ▁products ▁are ▁different ▁in ▁that ▁they ▁are ▁typically ▁used ▁for ▁wall ▁stud s , ▁floor ▁jo ists , ▁ra fter s , ▁and ▁tr uss ▁members . ▁ ▁Ex amples ▁of ▁cold - formed ▁steel ▁that ▁would ▁not ▁be ▁considered ▁fr aming ▁includes ▁metal ▁roof ing , ▁roof ▁and ▁floor ▁deck , ▁composite ▁deck , ▁metal ▁s iding , ▁and ▁p url ins ▁and ▁gir ts ▁on ▁metal ▁buildings . ▁ ▁F ram ing ▁members ▁are ▁typically ▁spac ed ▁at ▁ 1 6 ▁or