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

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Concrete Technology and Design of Concrete Structures
High carbon content in the steel causes

increase in tensile strength but decrease in ductility
decrease in both tensile strength and ductility
increase in both tensile strength and ductility
decrease in tensile strength but increase in ductility

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