Dimensions of a beam need be changed if the shear stress is more than_______________?
A. 10 kg/cm2
B. 15 kg/cm2
C. 20 kg/cm2
D. 25 kg/cm2
A. 10 kg/cm2
B. 15 kg/cm2
C. 20 kg/cm2
D. 25 kg/cm2