A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its leve

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A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is
Options
A. 30
B. 35
C. 40
D. 45
E. 50

Correct Answer

40

RCC Structures Design problems

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1. If bending moment is M, shear force is F effecive depth is d, lever arm is l_a area of reinforcement is A_s and sum of the circumferences of main reinforcement is 0, the bond stress based on working stress method, is
Options
A.
B.
C.
D.

4. If the depth of actual neutral axis of a doubly reinforced beam
Options
A. is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier
B. is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier
C. is equal to the depth of critical neutral axis, the concrete and steel attain their maximum stresses simultanesouly
D. all the above.

6. A T-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis
Options
A. remains within the flange
B. remains below the slab
C. coincides the geometrical centre of the beam
D. none of these.

7. The radius of a bar bend to form a hook, should not be less than
Options
A. twice the diameter
B. thrice the diameter
C. four times the diameter
D. five times the diameter
E. none of these.

8. The length of the straight portion of a bar beyond the end of the hook, should be at least
Options
A. twice the diameter
B. thrice the diameter
C. four times the diameter
D. five times the diameter
E. seven times the diameter.

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