From: Roger Turk <73527.1356(--nospam--at)compuserve.com>
Date: Fri, 10 Mar 2000 21:05:58 -0500
You have to design a post-tensioned slab-on-grade on expansive soils like a
ship is designed; for a "hogging" condition (supported in the middle,
unsupported at the perimeter) and a "sagging" condition (supported at the
perimeter, unsupported in the middle). It sounds like you designed for the
first condition; now you have to design for the second condition.
Hope this helps.
A. Roger Turk, P.E.(Structural)
Marlou Rodriguez wrote:
I am designing a Post Tensioned Slab On Grade for the first time. As an
example I am following the manual writen by PTI entitled "Design and
construction of Post-Tensioned Slabs-On-Ground". The example and the manual
does a great job in explaining how to design a PT s.o.g. with perimiter
loaded slabs. The mention very little about interior loads from columns and
from interior bearing walls.
My question to the PT SOG experts are, how do I handle the interior loads on
my Slab on Grade? I have currently split up my slab into rectangular
sections, but there are some areas I have interior columns and intrior
thanks for any advice on this matter.