UPSC Civil Service Exam Questions - Engineering

Q1:

Which one of the following stresses is independent of yield stress as a permissible stress for steel members ?

A Axial tensile stress

B Maximum shear stress

C Bearing stress

D Stress in slab base

ANS:D - Stress in slab base

Option (D) is correct.

Permissible values Axial tensile stress = 0.6 fy.
Bearing stress = 0.75 fy
Maximum shear stress = 0.45 fy.
Stress in slab base = 185 MPa for all type of steels.