A. compressive stress
B. shear stress
C. bond stress
D. tensile stress
Design of Concrete Structures
In prestressed concrete______________?
A. forces of tension and compression change but lever arm remains unchanged
B. forces of tension and compressions remain unchanged but lever arm changes with the moment
C. both forces of tension and compres-sion as well as lever arm change
D. both forces of tension and compres-sion as well as lever arm remain unchanged
Workability of concrete is directly proportional to________________?
A. aggregate cement ratio
B. time of transit
C. grading of the aggregate
D. all of above
Select the correct statement?
A. Elastic modulus of high tensile steel is nearly the same as that of mild steel
B. Elastic modulus of high tensile steel is more than that of mild steel
C. Carbon percentage in high carbon steel is less than that in mild steel
D. High tensile steel is cheaper than mild steel
For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of bar nor less than_______________?
A. 15 mm
B. 25 mm
C. 30 mm
D. 40 mm
Ratio of permissible stress in direct compression and bending compression is______________?
A. less than 1
B. between 1 and 1.5
C. between 1.5 and 2.0
D. greater than 2
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 /
from the driving end of pile which rests on the ground
Approximate value of shrinkage strain in concrete, is________________?
A. 0.003
B. 0.0003
C. 0.00003
D. 0.03
Minimum grade of concrete to be used in reinforced concrete as per IS:456-1978 is_____________?
A. M15
B. M20
C. M 10
D. M25
The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is______________?
A. not needed
B. provided equally on inner and front faces
C. provided more on inner face than on front face
D. provided more on front face than on inner face
