Shrinkage of concrete depends uponi) humidity of atmosphereii) passage of timeiii) stressThe correct answer is (i) and (ii) only (iii) (ii) and (iii) All (i), (ii) and (iii) TRUE ANSWER : ? YOUR ANSWER : ?
The compressive strength of 100 mm cube as compared to 150 mm cube is always more equal None of these less TRUE ANSWER : ? YOUR ANSWER : ?
According to Whitney’s theory, ultimate strain of concrete is assumed to be 0.3% 0.6% 0.4% 0.5% TRUE ANSWER : ? YOUR ANSWER : ?
Minimum pitch of transverse reinforcement in a column is forty-eight times the diameter of transverse reinforcement the least lateral dimension of the member sixteen times the smallest diameter of longitudinal reinforcement bar to be tied lesser of the above three values TRUE ANSWER : ? YOUR ANSWER : ?
Most common method of prestressing used for factory production is Lee-Macall system Freyssinet system Long line method Magnel-Blaton system TRUE ANSWER : ? YOUR ANSWER : ?
In prestressed concrete both forces of tension and compres-sion as well as lever arm change forces of tension and compression change but lever arm remains unchanged forces of tension and compressions remain unchanged but lever arm changes with the moment both forces of tension and compres-sion as well as lever arm remain unchanged TRUE ANSWER : ? YOUR ANSWER : ?
For a cantilever of effective depth of 0.5m, the maximum span to satisfy vertical deflection limit is 6 m 3.5 m 4 m 5 m TRUE ANSWER : ? YOUR ANSWER : ?
In reinforced concrete footing on soil, the minimum thickness at edge should not be less than 150 mm 200 mm 100 mm 250 mm TRUE ANSWER : ? YOUR ANSWER : ?
Due to circumferential action of the spiral in a spirally reinforced column Capacity of column is decreased but ductility of column increases Capacity of column is decreased Ductility of column reduces Both the capacity of column and ductility of column increase TRUE ANSWER : ? YOUR ANSWER : ?
The slab is designed as one way if the ratio of long span to short span is greater than 2 between 1 and 1.5 less than 1 between 1.5 and 2 TRUE ANSWER : ? YOUR ANSWER : ?