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[SEAOC] Re: [SEAOC] Footings' Tie Beams

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In a message dated 96-06-18 11:55:09 EDT, Mark wrote:

> Soils engineers seem to
>require tie beams as a method of limiting differential settlement. But this
>is clearly ineffective since the stiffness of such beams is very low. The
>only possible effect they might have is to increase the effective area of
>footing and reduce, therefore, the soil pressure. 

I agree.  For deep foundations the tie beams act as, well, tie beams :-).
 For shallow foundations they help reduce the soil bearing pressure, hence
minimizing differential settelment.

Janah A. Risha, S.E.