EFFECT OF CHANGING THE REINFORCEMENT DIRECTIONS FOR R. C. TWO-WAY SOLID SLABS

Improvement of the response for two- way solid slabs is the main important
which increase the ultimate strength capacity and decrease the maximum deformations. The
aim of this experimental investigation was to study the effect of change in the steel
reinforcing bars directions on the response of two- way solid slabs. The investigated
parameters in this study were carried out three different solid slab thicknesses and the change
in the angle of steel reinforcing bars mesh directions, which make with the major axis of the
slab. Three thickness (8, 10, and 12) Cm and ten angles of inclination (0, 5,
10,15,20,25,30,35,40, and 45) degrees were considered.
In this paper, thirty specimens were tested experimentally, and divided into three groups
according to the solid slab thickness. Each group contains ten specimens, one as a reference
and the other nine were reinforce by steel bars by one of the inclination angle. The obtained
results in this study indicated that, under static loading, the response of the two- way solid
slabs depends on the reinforcing bars directions and the solid slab thickness.
Very encouraging results and conclusions were obtained and presented in shape of figures and
curves, which may be useful for designer and increasing the safety when dealing with the
design of concrete slabs.