The minimum cube strength of concrete used for a pre-stressed member, is

[Srinivasan]

The minimum cube strength of concrete used for a pre-stressed member, is

(A) 50 kg/cm2

(B) 150 kg/cm2

(C) 250 kg/cm2

(D) 350 kg/cm2

The correct Answer Is
(D) 350 kg/cm2