The minimum cube strength of concrete used for a prestressed member, is ________(a) 50 kg/cm^2(b) 150 kg/cm^2(c) 350 kg/cm^2(d) 100 kg/cm^2The question was asked during a job interview.My question comes from Estimation in R.C.C. Structures topic in division Different Type Roofs, R.C.C of Civil Engineering Drawing

The minimum cube strength of concrete used for a prestressed member, i

1.	The minimum cube strength of concrete used for a prestressed member, is ________(a) 50 kg/cm^2(b) 150 kg/cm^2(c) 350 kg/cm^2(d) 100 kg/cm^2The question was asked during a job interview.My question comes from Estimation in R.C.C. Structures topic in division Different Type Roofs, R.C.C of Civil Engineering Drawing
Answer» The correct answer is (C) 350 kg/cm^2 The best explanation: M35 is minimum required CONCRETE for PRESTRESSED concrete. Here 35 is in N/mm^2. So convert it into kg/cm^2. N/mm^2 = 10 kg/cm^2. So 35 N/mm^2 = 350 Kg/cm^2.

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