Selection of steel stud size is usually derived from limiting height tables,based on 4 Back to Back – Fixing for 1.15 stud range in lieu of Boxing stud. This ... 0.75 & 1.15BMT - all stud sizes Boxed Studs 0.50 & 0.55 BMT - all stud sizes Fig. The web is the portion of the stud that creates the stud dimension. Steel track is the u-shaped channel used to attach steel studs to the floor and ceiling. Common stud sizes include 1-5/8, 2-1/2, 3-5/8, 4 and 6 inches. 1. Boxed jamb studs welded together reduces material build-up and finish problems. The Studco steel stud framing system is manufactured in a range of various widths, lengths and material gauges from 0.50mmBMT to 1.5mm BMT. Steel studs are sold in a variety of widths (comparable to dimensional lumber sizes), lengths and metal stud gauges (the lower the gauge number, the thicker the steel). 20-gauge studs are for curtainwall construction or more rigid partitions. When you view the C-shaped stud in cross section, it has three main parts. Use of cripple stud to receive head/sill tracks at the jamb studs helps maintain alignment of finishes. 25- and 20-Gauge Track Fastened at floor and ceiling to support the steel studs. It's a light type of construction, while a heavy-type uses bricks and concrete. In the case of steel framing, the cross-sectional shape of the frame member, size and the thickness and grade of steel must be considered. Page 9 The emergence of the new AISI S220, North American Standard for Cold-formed Steel Framing—Non-structural Members, is also critical.This standard will be adopted in the 2015 International Building Code (IBC), eventually replacing ASTM C645 as the universal industry standard for the specification of non-structural steel framing.Until then, guidelines and requirements of ASTM C645 … of lumber used. 3. GypSum board meTal FramING 25- and 20-Gauge Studs “C” shaped metal studs fabricated from galvanized steel. Yes, our free framing calculator computes the number of studs for you, but why do we use the 2x4 system at all? Boxed header members provide backing for attachment of window covering support. You anchor the top and bottom to steel track (of matching width), which only comes in 10-ft. lengths. Metal studs are also available in a range of lengths and thicknesses ranging from 25 to 16 gauge, the smaller the number the thicker the steel. 2x4 stands for a system using 2-inch-by-4-inch studs made out of wood, or steel. Steel studs and track can be easily fastened and unfastened using metal framing screws instead of nails. Equally important are height of the wall, the frame spacing and the maximum span of the surfacing material. Gypsum Board Steel Stud Track Steel Stud p artitions. 2. Refer to Table 56 for fixing requirements Window - Load Bearing Boxed Header Boxed Jamb. Metal studs are produced by forming the studs from strips of galvanized steel in cold rolling machines.