الفهرس 
Investigating design codes criteria for post tensioned concrete slabs
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Abstract
Numerical model for post tensioned slab using the finite elements programs (RAM), (ADAPT) and nonlinear finite element program (ANSYS v19) and its verification with experimental counterpart will be presented. Linear and non-linear analysis for reinforced concrete elements can be obtained by (RAM), (ADAPT) programs and ANSYS software.This is a study of both ACI code [19] and BS code [21] in design post tension slab system by using of Ram program and Adapt program. Making two models of slab having three spans ranging between (9-10-9)m for model 1 and (9-5-9)m for model 2 to save a code requirements as columns distribution , columns dimension and opening requirements. And then design slab model by using ACI code [19] and BS code [19] by using Ram program and Adapt program. The ECP 203-2018 code [23] is not clear when it comes to designing post tensioned concrete slabs in terms of the requirements to be followed, the permissible limits and also the design method. So some conditions and equations will be proposed that help in designing post-tensioned concrete slabs by using the ECP 203-2018 code [23]. A cost benefit analysis may be a procedure by which organizations can analyze results, techniques or projects, or determine a worth for intangibles. Making a model having area equal 2755 m2. Using model to affirm that using P.T system saving 10% to 20% of total cost and can increase. Solving model by using (Ram) program. Writing a simple computer program to design uncomplicated post-tensioned floor systems taking into consideration the recommendations of the ACI code [19] and BS code [21]