64.  The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is
A.25
B.30
C.35
D.40

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65. The maximum ratio of span to depth of a cantilever slab, is
A.8
B.10
C.12
D.14

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66.  The amount of reinformcement for main bars in a slab, is based upon
A. minimum bending moment
B. maximum bending moment
C. maximum shear force
D. minimum shear force.

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67. The percentage of minimum reinforcement of the gross sectional area in slabs, is
A.0.10%
B.0.12%
C.0.15%
D.0.18%

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68.  In a slab, the pitch of the main reinforcement should not exceed its effective depth
A. three times
B. four times
C. five times
D. two times.

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69.  The transverse reinforcements provided at right angles to the main reinforcement
A. distribute the load
B. resist the temperature stresses
C. resist the shrinkage stress
D. all the above.

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70.  If the diameter of the main reinforcement in a slab is 16 mm, the concrete cover to main bars is
A. 12 mm
B. 13 mm
C. 14 mm
D. 16 mm.

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