A. about 0.1 N/mm2
B. zero
C. 0.3 N/mm2 to 0.7 N/mm2
D. about 1.0 N/mm2
Related Mcqs:
- If the permissible stress in steel in tension is 140 N/mm2, then the depth of neutral axis for a singly reinforced rectangular balanced section will be___________________?
A. 0.35 d
B. 0.40 d
C. 0.45 d
D. dependent on grade of concrete also - The recommended value of modular ratio for reinforced brick work is______________?
A. 18
B. 30
C. 40
D. 58 - In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by_______________?
A. 10%
B. 20%
C. 30%
D. 40% - If the depth of neutral axis for a singly reinforced rectangular section is represented by kd in working stress design, then the value of k for balanced section_______________?
A. depends on as, only
B. depends on aCbC only
C. depends on both crst and acbc
D. is independant of both ast and acbc where d is the effective depth, ast is per-missible stress in steel in tension and ocbc is permissible stress in concrete in bend¬ing compression - 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 - 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 - The average permissible stress in bond for plain bars in tension is_______________?
A. increased by 10% for bars in compression
B. increased by 25% for bars in compression
C. decreased by 10% for bars in compression
D. decreased by 25% for bars in compression - When shear stress exceeds the permissible limit in a slab, then it is reduced by____________?
A. increasing the depth
B. providing shear reinforcement
C. using high strength steel
D. using thinner bars but more in number - 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 - 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
