A. remains constant
B. increases with richer mixes
C. decreases with richer mixes
D. none of the above
Related Mcqs:
- The approximate value of the ratio between direct tensile strength and flexural strength is_____________?
A. 0.33
B. 0.5
C. 0.75
D. 1.0 - According to IS : 456- 1978, minimum slenderness ratio for a short column is_______________?
A. less than 12
B. less than 18
C. between 18 and 24
D. more than 24 - The ratio of the diameter of reinforcing bars and the slab thickness is_______________?
A. 1/4
B. 1/5
C. 1/6
D. 1/8 - A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (1/D. is less than__________________?
A. 1.5
B. 2.0
C. 2.5
D. 3.0 - The slab is designed as one way if the ratio of long span to short span is_____________?
A. less than 1
B. between 1 and 1.5
C. between 1.5 and 2
D. greater than 2 - 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 - A higher modular ratio shows____________?
A. higher compressive strength of con-crete
B. lower compressive strength of concrete
C. higher tensile strength of steel
D. lower tensile strength of steel - The effect of creep on modular ratio is__________________?
A. to decrease it
B. to increase it
C. either to decrease or to increase it
D. to keep it unchanged - The recommended value of modular ratio for reinforced brick work is______________?
A. 18
B. 30
C. 40
D. 58 - 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