Express the short term static modulus (Ec) in terms of the characteristiccompressive strength (fck).

Express the short term static modulus (Ec) in terms of the characteristiccompressive strength (fck) of concrete.
Define creep coefficient? of concrete and express the relation betweenthe effective modulus (Ece), short term static modulus (Ec) and creep coefficient (?) of concrete.
Differentiate between design mix and nominal mix concrete.
Draw stress-strain curve of steel bars with or without definite yield point and indicate the yield stress fy of them.