ARC 418 Lecture Notes - Lecture 7: Thermal Conductivity, Sheet Metal, Gypsum
5 Apr 2017
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Document Summary
Sheet steel is fed from continuous coils through machines at room temperature that cold-work the metal and fold into efficient structural shapes, producing linear members that are stiff and strong. Light gauge refers to relative thinness (gauge) of steel sheet from which the members are made. Non-combustible equivalent of wood light frame construction. Steel members, dimensional sized to correspond with standard sizes of nominal 2-inch framing lumber. Steel members used in framing as closely spaced studs, joists, and rafters. Are sheathed, wired, and finished in same way wood construction is. Metallic coated with zinc or aluminum-zinc alloy to protect against corrosion. Can be cut on job site with power saws. Can be nested to form tubular configuration that is especially strong and stiff when used for a ridge board, or header. Must be braced to prevent twisting and buckling. All sheathing and finished materials add significant strength to framing.
