Concrete Technology and Design of Concrete Structures
If a beam fails in bond, then its bond strength can be increased most economi-cally by

using thicker bars but less in number
providing vertical stirrups
increasing the depth of beam
using thinner bars but more in number

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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

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

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