Concrete Technology and Design of Concrete Structures
In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided oni) bottom face near counterfortii) top face near counterfortiii) bottom face near centre of spaniv) top face near centre of span The correct answer is

only (i)
both (i) and (iv)
both (ii) and (iii)
only (ii)

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Concrete Technology and Design of Concrete Structures
The diameter of ties in a column should be

More than or equal to 5 mm
More than 5 mm and also more than one-fourth of diameter of main bar
More than 5 mm but less than one-fourth of diameter of main bar
More than or equal to one fourth of diameter of main bar

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