A. 30°
B. 40°
C. 45°
D. All the above
Related Mcqs:
- If diameter of a reinforcement bar is d, the anchorage value of the hook is_______________?
A. 4d
B. 8d
C. 12d
D. 16d - The radius of a bar bend to form a hook, should not be less than_______________?
A. Twice the diameter
B. Thrice the diameter
C. Four times the diameter
D. Five times the diameter - The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or____________________?
A. 12 bar diameters
B. 18 bar diameters
C. 24 bar diameters
D. 30 bar diameters - The length of the straight portion of a bar beyond the end of the hook, should be at least_______________?
A. Twice the diameter
B. Thrice the diameter
C. Four times the diameter
D. Seven times the diameter - The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of___________________?
A. 10 mm
B. 15 mm
C. 20 mm
D. 25 mm - The length of lap in tension reinforcement should not be less than the bar diameter × (actual tension / four times the permissible average bond stress) if it is more than_______________?
A. 18 bar diameters
B. 24 bar diameters
C. 30 bar diameters
D. 36 bar diameters - The maximum diameter of a bar used in a ribbed slab, is______________?
A. 12 mm
B. 6 mm
C. 20 mm
D. 22 mm - If the average bending stress is 6 kg/cm2 for M 150 grade concrete, the length of embedment of a bar of diameter d according to I.S. 456 specifications, is__________________?
A. 28 d
B. 38 d
C. 48 d
D. 58 d - If Sb, is the average bond stress on a bar of diameter subjected to maximum stress , the length of the embedment is given by_____________?
A. l = dt/Sb
B. l = dt/2Sb
C. l = dt/3Sb
D. l = dt/4Sb - The angle of internal friction of soil mass is the angle whose_______________?
A. Tangent is equal to the rate of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on the plane
B. Sine is equal to the ratio of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on the plane
C. Cosine is equal to the ratio of the maximum resistance sliding on any internal inclined plane to the normal pressure acting on the plane
D. None of these
