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RE: Thickened Floor Slabs 2

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According to a general view point, a partition load of 500 lb per linear foot or less does not require a wall footing. But, this is just a “rule of thumb” or an empirical value. You can also use thickening of the slabs to support an 8-in wall and there are “classical” details available for that.


Having said that, it is also prudent to run a check of stresses to be sure of what is going on there. I would refer you to pages 46-47 of the reference: Designing Floor Slabs on Grade by B.C. Ringo & R.B. Anderson (Aberdeen Group publication) wherein the problem per se is discussed. They are referring to Army-TM Equations for the purpose.


Best regards,


Syed Faiz Ahmad: MEngg, M.ASCE

Senior Structural Engineer

Saudi Oger Ltd

Riyadh, Saudi Arabia.


-----Original Message-----
From: Lester Unger [mailto:lesterunger(--nospam--at)]
Sent: Tuesday, October 07, 2003 9:09 PM
To: seaint(--nospam--at)
Subject: Thickened Floor Slabs 2


Thank you for the responses. It seems unanimous and logical to use a thickened slab. How many are using the same logic for 8" non bearing cmu walls? Using thickened slabs for 8" walls instead of wall footers would be very cost effective.

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