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Re: LGSS (Light Gauge Steel Studs) Need design example[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaoc(--nospam--at)seaoc.org>
- Subject: Re: LGSS (Light Gauge Steel Studs) Need design example
- From: "David Boyer" <david20(--nospam--at)ix.netcom.com>
- Date: Tue, 24 Feb 1998 18:34:04 -0600
- Cc: <rsg(--nospam--at)sprintmail.com>
I have been designing with light gage studs for approximately 18 years and have found that studs lighter than 18 gage pose a problem in installation. It is too easy to "strip" screws in the light gages, reducing the effectiveness of the engineers design. I would also recumbent fasteners be at least a #12 screw to help prevent the shearing of the fastener shank. Knock on wood, I have not had a failure using the above criteria. I have designed light gage studs as both bearing walls in "U-Haul" type two and three story structures and as exterior walls in high-rise construction in Nevada and California (up to thirty-three stories). You might also look a computer program that has saved me an enormous amount of time designing around Light Gage Steel Studs. A gentlemen in Missouri, Robert Glauz, has updated his program "CFS" (Cold Formed Steel) to comply with the new provisions of the 1996 AISI Specifications. It runs under Windows 95/NT. This program has a built in library of standard sections based on various manufactures section data and ASTM Steel grades. It has the capability to add other libraries based on new or custom sections. The Section analysis will give you full and effective section properties and allowable loads. The Analysis Section of the program, based on beam/stud layout loading, supports, etc.. will determine moments, shears, deflections and reactions in addition to unity checks based on ASD or LRFD. Web crippling and bearing can also be checked. Wall studs, joists, purlins, hat sections or what ever section you desire can be used in the analysis. I tried writing a "Mathcad" program, but found "CFS" is much more informative and complete. If you are interested, he sends out a demo of the program. His e-mail is rsg(--nospam--at)sprintmail.com I hope this helps. David M. Boyer, P.E.
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