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Re: Single or Double angle bending member

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Just using that quick estimate does not include local buckling like the Single Angle Spec requires. But it may end up being conservative for most lintel angles.

Will

>From: Bill Polhemus <bill(--nospam--at)polhemus.cc>
>Reply-To: <seaint(--nospam--at)seaint.org>
>To: seaint(--nospam--at)seaint.org
>Subject: Re: Single or Double angle bending member
>Date: Mon, 25 Apr 2005 21:06:09 -0500
>
>Will Haynes wrote:
>
>>I think it is a single angle problem. The angles can't buckle in
>>lateral torsional mode together like they can in a back-to-back
>>double angle section. How does one angle know there is another
>>angle on the other side of the wall?
>>
>>I see these angles a lot in cmu walls, with the tips of the angles
>>facing each other. A guy told me the following method before and I
>>suspect this is probably what a lot of engineers use. You figure
>>out the section modulus of only the vertical legs of the angles,
>>add these together, then limit the stress to 0.6 Fy based on this
>>section modulus only. I don't know how accurate this technique
>>actually is, probably not very.
>>
>Why, when angle bending according to the AISC Spec is pretty
>straightforward?
>
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