Two way slabs are slabs in which the surface load is transferred in two directions. Two way slabs have many types: slabs supported on beams between all columns, slabs without beams and waffle slabs. Slabs with beams are commonly used for high loads and or large spans. The deflection in the slab panel depends mainly on the beams stiffness. The deflection at middle of panels decreases as the stiffness of the supporting beams increases. The internal forces and especially the bending moments are increased in the beams as their stiffness increases. This paper will illustrate the sequence of increase in beam moments as the beams stiffness increases. Slabs with different beams stiffness and longer span to short span ratios will be studied. Also, the principle of 45 degrees-load-distribution principle for beams will be discussed. The computer program sap2000 will be used in structural modeling. Abstract-Two way slabs are slabs in which the surface load is transferred in two directions. Two way slabs have many types: slabs supported on beams between all columns, slabs without beams and waffle slabs. Slabs with beams are commonly used for high loads and or large spans. The deflection in the slab panel depends mainly on the beams stiffness. The deflection at middle of panels decreases as the stiffness of the supporting beams increases. The internal forces and especially the bending moments are increased in the beams as their stiffness increases. This paper will illustrate the sequence of increase in beam moments as the beams stiffness increases. Slabs with different beams stiffness and longer span to short span ratios will be studied. Also, the principle of 45 degrees-load-distribution principle for beams will be discussed. The computer program sap2000 will be used in structural modeling.

Title

Global Journal of Researches in Engineering: E Civil And Structural Engineering 01/2014; volume 14(issue 2):pages 76-94

Publisher

Global Journal of Researches in Engineering: E Civil And Structural Engineering

Publisher Country

Palestine

Publication Type

Both (Printed and Online)

Volume

14

Year

2014

Pages

76-94