Concrete Technology and Design of Concrete Structures
In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on i) bottom face near counterfort ii) top face near counterfort iii) bottom face near centre of span iv) top face near centre of span The correct answer is

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

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Concrete Technology and Design of Concrete Structures
Select the incorrect statement...

None of these
The loss of prestress is more in pre-tensioning system than in post-tensioning system.
Pretensioning system has greater certainty about its durability.
For heavy loads and large spans in buildings or bridges, post-tensioning system is cheaper than pretensioning system

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