RCC Structures Design
Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less than

Twice the diameter of thinner bar
None of these
One diameter of thinner bar
One diameter of thicker bar

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RCC Structures Design
According to I.S. : 456, slabs which span in two directions with corners held down, are assumed to be divided in each direction into middle strips and edge strips such that the width of the middle strip, is

Half of the width of the slab
Four-fifth of the width of the slab
Two-third of the width of the slab
Three-fourth of the width of the slab

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