if length/breadth equal or greater than 2 then its oneway slab and reinforcement is on the short span because moments are great near the supports
Most likely to be a steel cage, with bars that run in two directions, to take the tension on the underside of the slab.
A one way slab reinforcement supports 2 walls while a two way slab reinforcement supports 4 walls. The one way slab reinforcement only supports walls in one direction.
The reinforcement resisting flexure (bending) in the direction of the span.
Torsion reinforcement provided at the corner of two way slab to control cracking at corners.
Ans: One way slab is the slab having ratio of longer span to shorter span equal to or more than 1.5 . If the ratio of longer span to shorter span is equal to or less than 1.5, then such slabs are called as two way slab. In one way slab main tensile reinforcement is placed parellel to shorter side which will be the main steel, where as in two way slab both direction required main steel.
The minimum covering of reinforcement for roof slab is 30mm
Ok to create a slab with no reinforcement, you have to remove tensile forces from the slab, this is only possible by manipulating its shape for only compressive forces, like make it a bit pyramidal or with a vault etc.
when the length of the slab is more or equal to twice the breadth hence it has to be one way slab.
Two-way slabs are rectangular reinforced-concrete slabs that are supported on all sides. The reinforcement is placed perpendicular to the sides.
1/2 dia bars @ 6 in c/c
1. one way slab 2. two way slab 3. flat slab 4. roof slab
a slab whose length and breadth ratio is more than two is called one way slab
The different types of slabs are; one way slab, two way slab, flat plated slab, flat slab and grid slab