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Re: Geade beams per ACI 318-08 section

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Sounds like a typo, but I don't have a copy of ACI 318-08.  Have they completely renumbered the sections?  In 318-05, there is no section  I would guess that the minimum dimension is 18".  That would be silly to cap it at 18", don't you think?  If you have a 12" grade beam, then the stirrups are 6" out-to-out when you include 3" cover on either side...  Any reasonable plan reviewer could be this.

On Thu, Apr 22, 2010 at 1:47 PM, Vasu, Ravi <Ravi.Vasu(--nospam--at)> wrote:


I have grade beams between pile caps in SDC D.   ACI 318-08 section says,
the max. limit of least cross sectional dimension is 18 in.    Is there any reason
why the max. is set at 18 in.?  That means, we cannot have 24 in. or 30 in. (least)dimension?
I appreciate your help.


Ravi Vasu

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