A. 100 mm
B. 150 mm
C. 200 mm
D. 250 mm
Related Mcqs:
- 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 - Lap length in compression shall not be less than______________?
A. 15 4>
B. 20
C. 24 (j)
D. 30 (j)where (j) is diameter of bar
- For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be________________?
A. 0.75-0.80
B. 0.80-0.85
C. 0.85 – 0.92
D. above 0.92 - For a reinforced concrete section, the shape of shear stress diagram is_______________?
A. wholly parabolic
B. wholly rectangular
C. parabolic above neutral axis and rectangular below neutral axis
D. rectangular above neutral axis and parabolic below neutral axis - In symmetrically reinforced sections, shrinkage stresses in concrete and steel are respectively_______________?
A. compressive and tensile
B. tensile and compressive
C. both compressive
D. both tensile - The minimum cover in a slab should neither be less than the diameter of bar nor less than_______________?
A. 10 mm
B. 15 mm
C. 25 mm
D. 13 mm - 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 - The individual variation between test strength of sample should not be more than______________?
A. ±5% of average
B. ± 10% of average
C. ± 15% of average
D. ±20% of average - 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 - Minimum thickness of load bearing RCC wall should be_____________?
A. 50 mm
B. 100 mm
C. 150 mm
D. 200 mm
