A. to provide adequate bond stress
B. to resist tensile stresses
C. to impart initial compressive stress in concrete
D. all of the above
Related Mcqs:
- 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 - If nominal shear stress tv exceeds the design shear strength of concrete xc, the nominal shear reinforcement as per IS : 456-1978 shall be provided for carrying a shear stress equal to__________________?
A. xv
B. xc
C. xv – TC
D. Tv + Tc - 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 - Minimum pitch of transverse reinforcement in a column is________________?
A. the least lateral dimension of the member
B. sixteen times the smallest diameter of longitudinal reinforcement bar to be tied
C. forty-eight times the diameter of transverse reinforcement
D. lesser of the above three values - Approximate value of shrinkage strain in concrete, is________________?
A. 0.003
B. 0.0003
C. 0.00003
D. 0.03 - According to IS : 456-1978, the fiexural strength of concrete is________________?
A. directly proportional to compressive strength
B. inversely proportional to compressive strength
C. directly proportional to square root of compressive strength
D. inversely proportional to square root of compressive strength - The effect of adding calcium chloride in concrete is________________?
1. to increase shrinkage
2. to decrease shrinkage
3. to increase setting time
4. to decrease setting time
The correct answer is?
A. (1) and (3)
B. (1)and(4)
C. (2)and (3)
D. (2)and (4) - The percentage of reinforcement in case of slabs, when high strength deformed bars are used is not less than________________?
A. 0.15
B. 0.12
C. 0.30
D. 1.00 - Maximum percentage reinforcement in case of slabs is limited to___________________?
A. 2
B. 4
C. 6
D. 8 - The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on______________?
A. top face perpendicular to wall
B. bottom face perpendicular to wall
C. both top and bottom faces perpendicular to wall
D. none of the above
