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Re: Helical Steel Stairs Question

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I hope you mean hot-rolled channels and not cold-rolled, because cold-rolled channels are light gauge 
and will buckle or crush in the rolling machines.

Gary Hodgson, P.Eng.
Niagara Falls, ON

On 2 Oct 2002 at 14:07, William Grizzell, P.E. wrote:

> I've been asked to provide a design for a residential steel stair that has a double helix twisted shape, approx. 10 ft. high and has a 180 degree radius.  I plan on using cold rolled 12" channel for the stringers with welded z-shaped plates for steps.  The stairs will be wrapped in wood.  Any 
suggestions on how to calculate this or other recommendations are much appreciated.
> 
> William Grizzell, P.E.
> Consulting Engineer - Structural
> 2278 Camino Ramon, Suite 12
> San Ramon, CA
> Phone: 925-866-1171
> Fax: 925-866-1121Get more from the Web.  FREE MSN Explorer download : http://explorer.msn.com

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