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RE: Elevated post-tensioned slab cracks

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Thank you, Roger.

So, what do you suggest?

Oshin Tosounian, S.E.
Los Angeles, CA

> -----Original Message-----
> From: Roger Turk [mailto:73527.1356(--nospam--at)compuserve.com]
> Sent: Thursday, January 09, 2003 6:10 AM
> To: Oshin Tosounian
> Subject: Elevated post-tensioned slab cracks
> 
> 
> Oshin,
> 
> I have contended for years that post-tensioned concrete slabs 
> with banded 
> tendons in one direction is really a one-way slab, spanning 
> in the direction 
> of the distributed tendons with the banded tendons creating an 
> over-compressed in-slab beam.
> 
> It is absurd to believe that banding tendons is the same as 
> distributing 
> the tendons.
> 
> If you look at the research that supposedly shows that 
> two-way action is not 
> dependent on distribution of tendons, you will see that the 
> slab fails as a 
> one-way slab, with cracks first appearing parallel to the 
> distributed tendons.
> 
> A. Roger Turk, P.E.(Structural)
> Tucson, Arizona
> 

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