الفهرس 
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Abstract
This thesis contains numerical and analytical studies to investigate the
performance of post-tensioned raft foundation to prove it as a better alternative to
the conventional R.C system, especially for foundation in sever exposure
conditions.
The numerical analysis includes calculations of selected case study using the
Finite Element Method for which a parametric study has been carried out to
investigate the influence of different variables on the behavior of the post tensioned
raft foundation. In order to evaluate the proposed alternative system efficiency, it
was necessary to compare the PT raft design and results against conventional RC
raft. The design was carried out for most widespread code ACI318, and extent to
compare the design requirements and the design results with BS8110 and ECP203.
A high performance of the post tensioned raft foundation is noticed for the
Serviceability Limit States and Ultimate Limit States, in addition to profitable
saving in the quantities especially for foundations of low rise buildings.