85.  The minimum thickness of a flat slab is taken
A. 13 cm
B. 1132 for end panels without drops
C. 1136 for end panels without drops
D. all the above.

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86.  The effective width of a column strip of a flat slab, is
A. one-fourth the width of the panel
B. half the width of the panel
C. radius of the column
D. diameter of the column

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87.  If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions,then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than
A.
B.
C.
D.

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88.  A circular slab subjected to external loading, deflects to form a
A. semi-hemisphere
B. ellipsoid
C. parabolloid
D. none of these.

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89. For a circular slab carrying a uniformly distributed load, the ratio of the maxi-mum negative to maximum positive radial moment, is
A.1
B.2
C.3
D.4

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90.  For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed
A.10
B.15
C.20
D.25

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91.  If the ratio of the span to the overall depth does not exceed 10, the stiffness of the beam will ordinarily be satisfactory in case of a
A. simply supported beam
B. continuous beam
C. cantilever beam
D. none of these.

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