Answer / raghuram

shear is governed by the depth.In case of slabs the depth
is restricted to 140mm(IS:456. So for that thickness shear
reinforcement is not required.

Answer / vinod kharkwal

The quantum of shear stress for the slab is very less. the
shearing capacity of concrete itself sufficient to bear the
shear loads. Thats way minimum or no shear reinforcement is
provided for slabs.

Answer / iamrk1293

According to IS:456, shear strength of element will increase if depth is less than 300mm. this will increase with decrease in depth.
as most of slab have depth less than 150mm which give enough shear strength most of times.

Answer / arun murugesan

When τc’ > τv no shear reinforcement is required
if τv > τc’ the shear reinforcement is required.(or)
Ast value is less than the minimum shear reinforcement
value then we should provide minimum shear reinforcement ie
0.12 % of bD. Shear reinforcements are used to resist the
shear cracks by means of increasing the Asv value.

Answer / vennila

to avoid shear cracks

Answer / vennila

it helps to maintain the interlock the course material and
it will increase the streanth by16%

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