The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of__________________?
(A) 0.367 xu
(B) 0.416 xu
(C) 0.446 xu
(D) 0.573 xu
According to ISI recommendations, the maximum depth of stress block for balanced section of a beam of effective depth d is__________________?
(A) 0.43 d
(B) 0.55 d
(C) 0.68 d
(D) 0.85 d
During erection, the pile of length / is supported by a crane at a distance of________________?
(A) 0.207 /
(B) 0.293 /
(C) 0.7071
(D) 0.793 /
If the foundations of all the columns of a structure are designed on the total live and dead load basis, then_________________?
(A) there will be no settlement of columns
(B) there will be no differential settlement
(C) the settlement of exterior columns will be more than interior columns
(D) the settlement of interior columns will be more than exterior columns
Ultimate strength of cold drawn high steel wires_______________?
(A) increases with increase in diameter of bar
(B) decreases with increase in diameter of bar
(C) does not depend on diameter of bar
(D) none of the above
Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than__________________?
(A) 35 MPa and 42 MPa
(B) 42 MPa and 35 MPa
(C) 42 MPa and 53 MPa
(D) 53 MPa and 42 MPa
Stress strain curve of high tensile steel_______________?
(A) has a definite yield point
(B) does not show definite yield point but yield point is defined by 0.1% proof stress
(C) does not show definite yield point but yield point is defined by 0.2% proof stress
(D) does not show definite yield point but yield point is defined by 2% proof stress
Which of the following has high tensile strength ?
(A) plain hot rolled wires
(B) cold drawn wires
(C) heat treated rolled wires
(D) all have same tensile strength
Which of the following losses of prestress occurs only in pretensioning and not in post-tensioning ?
(A) elastic shortening of concrete
(B) shrinkage of concrete
(C) creep of concrete
(D) loss due to friction
Normally prestressing wires are arranged in the_______________?
(A) upper part of the beam
(B) lower part of the beam
(C) center
(D) anywhere