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Re: Structure Magazine Questions[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Structure Magazine Questions
- From: rlewis(--nospam--at)techteam.org (Richard Lewis)
- Date: 10 Jan 1999 00:38:53 GMT
seaint(--nospam--at)seaint.org,Internet writes: Should the compression flange of a masonry beam, built integrally with a masonry wall above, be considered laterally braced? In my experience, usually the lateral bracing of a masonry beam is not a problem. I don't have a code in front of me, but my recollection is the lateral bracing requirements are based on the width/depth ratio, which usually is high for a masonry beam. Large openings require deep beams for moment and shear and usually unbraced length is not a problem. I assume the ends of the beams are supported because they typically have significant vertical reinforcement for vertical and lateral load. But, if I were to come across a design which would have an actual unbraced length greater then the calculated one then I would reduce the allowable bending and not consider it braced by the wall. If the beam were very close to a horizontal diaphragm, I might consider it braced, however, if it was down a ways I would consider it unbraced. I would be a engineering judgement call. __________________________________________________ Richard Lewis, P.E. Missionary TECH Team rlewis(--nospam--at)techteam.org The service mission like-minded Christian organizations may turn to for technical assistance and know-how.
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