الفهرس 
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Abstract
The housing problem occupies a leading position in the list of social and economic priorities in many countries. Thus, there is an urgent
need for alternative systems to fulfill the rapid expansion of the housing
construction demand in terms of quality, strength properties and
environmental aspects. Al-Tuhami (2013) presents a method and
technique for enhancing the mechanical properties of prestressed Hollow
Core Slabs. The suggested technique was based on comprised of
longitudinal, transverse ribs and lower thin slab layer. The spaces
between the ribs and the lower concrete layer are filled with polystyrene
foam blocks.
re due to
different
Experimental work and theoretical formulation have been carried
out to study the flexural and shear behavior of hollow core slabs and
modified hollow core slabs, and to study the effect of the presence of
shear reinforcements on enhancing the structural behavior of the Hollow
Core Slab.
The main aim of the experimental study presented in this thesis for
examing the effect of the presence of traditional reinforcements including
longitudinal reinforcements and stirrups in addition to prestressed wires
on the behavior and shear capacity of the precast slab specimens.