The thickness of the topping of a ribbed slab, varies between 3 cm to 5 cm 5 cm

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Question
The thickness of the topping of a ribbed slab, varies between
Options
A. 3 cm to 5 cm
B. 5 cm to 8 cm
C. 8 cm to 10 cm
D. 12 cm to 15 cm
E. 12 cm to 18 cm

Correct Answer

5 cm to 8 cm

RCC Structures Design problems

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1. 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.

2. 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.

3. 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.

4. 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

5. 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.

7. In a singly reinforced beam, the effective depth is measured from its compression edge to
Options
A. tensile edge
B. tensile reinforcement
C. neutral axis of the beam
D. longitudinal central axis.

9. Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to
Options
A. shear force
B. area of the section
C. distance of the C.G. of the area from its neutral axis
D. moment of the beam section about its neutral axis
E. width of the beam.

10. A simply supported beam , 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm², the area of steel required, is
Options
A. 14 cm²
B. 15 cm²
C. 16 cm²
D. 17 cm²
E. 18 cm²

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