"steel skeleton" . "steel column" . "steel structure" . "steel-frame" . "steel framing" . . "Steel frame#Cold-formed steel frames" . . "Steel frame" . "Structural Steel Frames" . . "light steel framing" . . . "steel structured" . "skeleton-frame" . "steel frames" . "steel-skeleton" . "Steel frame" . . "structural frame" . . . "skeleton steel framing" . . . "Steel frame#Light steel framing" . "steel-reinforced concrete skeleton" . "steel framed construction" . "skeleton frame" . "steel skeletons" . "steel framed building" . "steel-framed structure" . . "skeleton construction" . . . . "light gauge steel studs" . "steel skeleton frame" . . "skeletal components" . "lightweight steel" . . "iron-framed building" . . "steel-framed high-rise building" . "steel frame construction" . "steel-framed building" . . "light gauge steel" . . "steel skeletal frame" . "iron-and-steel-framed" . "steel frame" . "steel braced frames" . "steel-framed" . "made entirely of steel" . "structural frames" . . "light gauge framing" . . "Iron" . "iron frame" . "steel column and horizontal beam" . "steel" . . "steel-frame method" . . "Steel" . .