1.

The modulus of elasticity, \({\rm{E}} = 5000{\rm{\;}}\sqrt {{{\rm{f}}_{{\rm{ck}}}}} \) where fck is the characteristic compressive strength of concrete, specified in IS:456-2000 is based on

A. Tangent modulus
B. Initial tangent modulus
C. Secant modulus
D. Chord modulus
Answer» D. Chord modulus


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