One Way Roof Slab Design

In other words the one way slab is supported by beams in such a way that the load is carried along one direction.

One way roof slab design.

One way slab is designed as singly reinforced rectangular section. 1 1 a in which the structural action is essentially one way the loads being carried in direction perpendicular to the supporting beams or walls. Simply supported one way slab a rectangular reinforced concrete slab is simply supported on two masonry walls 250 mm thick and 3 75 m apart. When the ratio of the longer to the shorter side l s of the slab is at least equal to 2 0 it is called one way slab shown in figure 8 1 a.

However main reinforcement bar and distribution bar in transverse direction. L ln h 2 h 2 ln h h depth of slab and l c c distance between supports. One way slab can be defined as the type of slab in which the ratio of the longer span to the shorter span is greater than two. Under the action of loads it is deflected in the short direction only in a cylindrical form.

One way slab and two way slab. L effective span lesser of the following. One way slab design steps. Determine the minimum thickness of slab from serviceability criteria of deflection control.

Design a one way slab for the inside of a building using the span loads and other data given in figure 1. Calculate the effective span of slab from is 456 clause 22 2 which is least of. They may be supported on two opposite sides only fig. Normal weight aggregate concrete is specified with a density of 145 pcf.

Calculate aspect ratio and determine either it is one way or two way slab. Examples of one way slab. Longer span l shorter span b 2. H min for the slab is different compared with the beams.

The slab has to carry a distributed permanent action of 1 0 kn m2 excluding slab self weight and a variable action of 3 0 kn m2. The load on the slab is carried by the short span in one direction. Longer span shorter span 2.