a) 40
b) 25
c) 100
d) 50
Answer: a
Explanation: For ordinary frame structures of concrete, the permissible angular distortion is 1/500 i.e. one horizontal to 500 vertical and the desirable value is 1/1000 i.e. one horizontal to 1000 vertical. The term angular distortion is used to indicate the deformation of the structure in a vertical plane.
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