Question

As per IS 456 : 2000, the maximum permissible shear stress, ${\tau }_{c,max}$, is based on

• A. Diagonal tension failure
• B. Diagonal compression failure
• C. Flexural tension failure
• D. Flexural compression failure

Answer 1

The correct option is B Diagonal compression failure

${\tau }_{c,max}$ is maximum shear strength of concrete with shear reinforcement. When a large quantity of shear reinforcement is provided with main reinforcement, failure will occure due to diagonal compression failure of concrete, based on which ${\tau }_{c,max}$ value has been decided.