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RE: cantilever T-beam

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The flange becomes ineffective under negative moments except in the case where your stress is less than the tension capacity of concrete which is kind of rare.

ark E. Deardorff

Structural Engineer

3434 4th Ave

San Diego, CA 92103

P 619.299.5550 x348

F 619.299.9934



From: Jason Atwood [mailto:atwoodjason(--nospam--at)]
Sent: Wednesday, March 28, 2007 12:18 PM
To: seaint(--nospam--at)
Subject: cantilever T-beam

I'm designing a cantilever concrete t-beam. Should I take effective flange based the cantilever or 2 times the cantilever. All references I've looked at (PCA Notes, ACI 318, Wang Salmon) seem to focus on beams supported on each end. I'm leaning towards 2 times the cantilever. What do you say?
Jason Atwood