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RE: cantilever T-beam

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Mark,

You cannot make a blanket statement that the flange does not exist if it is in tension.

If you are doing real deflection calculations, allowing for cracking and long term effects, the flange is allowed for in design. If it cracks then this is taken care of in the calculations. Same for strength if the neutral axis is in the flange (even though the web is in compression), for a shallow beam it is possible for there to be some compression in the bottom of the flange .




At 08:11 AM 29/03/2007, you wrote:
That only refers to the distribution of steel in the tension flange. It does not mean the flange is available for strength determination. Your "b" distance is the width of the web. The compression block is at the bottom of the beam, not in the flange.
 
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From: Jason Atwood [ mailto:atwoodjason(--nospam--at)yahoo.com]
Sent: Wednesday, March 28, 2007 3:02 PM
To: seaint(--nospam--at)seaint.org
Subject: RE: cantilever T-beam

thanx but see ACI 318 10.6.6
 
 
Jason


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