According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150 gradeconcrete, is July 30, 2021 by admin Question: According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150 gradeconcrete, is A. 5 kg/cm2 B. 10 kg/cm2 C. 15 kg/cm2 D. 20 kg/cm2 Answer» a. 5 kg/cm2 Note: The above multiple-choice question is for all general and Competitive Exams in India.