Concrete Technology and Design of Concrete Structures
Sinking of an intermediate support of a continuous beam
i) reduces the negative moment at support
ii) increases the negative moment at support
iii) reduces the positive moment at center of span
iv) increases the positive moment at center of span
The correct answer is

(i) and (iv)
(ii) and (iv)
(i) and (iii)
(ii) and (iii)

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

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

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