Question

IS : 1343-1980 limits the minimum characteristic strength of pre-stressed concrete for post-tensioned work and pre-tensioned work as

• A. 25 MPa, 30 MPa respectively
• B. 25 MPa, 35 MPa respectively
• C. 30 MPa, 35 MPa respectively
• D. 30 MPa, 40 MPa respectively

Answer 1

The correct option is D 30 MPa, 40 MPa respectively

Minimum characteristic strength of prestressed concrete for
Post tensioned = 30 MPa
Pre tensioned = 40 MPa