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

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

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Concrete Technology and Design of Concrete Structures
The main reinforcement in the toe of a T- shaped R C. retaining wall is provided oni) top face parallel to the wallii) top face perpendicular to the walliii) bottom face paralleUo the walliv) bottom face perpendicular to the wallThe correct answer is

only (iv) is correct
only (ii) is correct
(iii) and (iv) are correct
(i) and (ii) are correct

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