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Re: Footing's section modulus - Errata

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There is an alternative approach to this issue...see FEMA 356.

Dave Evans, PE
TNH, Inc.



Date sent:      	Sun, 15 Jun 2003 21:13:06 -0400
From:           	Roger Turk <73527.1356(--nospam--at)compuserve.com>
Subject:        	Footing's section modulus - Errata
To:             	SEAOC Listservice <seaint(--nospam--at)seaint.org>
Send reply to:  	<seaint(--nospam--at)seaint.org>
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> 
> John,
> 
> I should have said:
> 
> To calculate soil pressure from an eccentrically loaded square footing, the 
> section modulus is (b^3)/6 provided the eccentricity is less than b/6.  
>                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> However, the section modulus for an uncracked concrete section is (b * 
> depth^2 )/6.
> 
> HTH
> 
> A. Roger Turk, P.E.(Structural)
> Tucson, Arizona
> 
> John Nader wrote:
> 
> . > Please confirm that the section modulus for  a square footing is (b^3)/6 
> . > and not 
> 
> . > (b * depth^2 ) /6.
> 
> . > Thanks in advance.
> 
> . > John
> 
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