Concrete Technology and Design of Concrete Structures
The average permissible stress in bond for plain bars in tension is

increased by 10% for bars in compression
increased by 25% for bars in compression
decreased by 10% for bars in compression
decreased by 25% for bars in compression

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Concrete Technology and Design of Concrete Structures
Examine the following statements :i) Factor of safety for steel should be based on its yield stress,ii) Factor of safety for steel should be based on its ultimate stress,iii) Factor of safety for concrete should be based on its yield stress,iv) Factor of safety for concrete should be based on its ultimate stress.The correct statements are

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

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