301) 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 (iii)

(i)and(iv)

(ii) and (iii)

(ii) and (iv)

Answer is:

(i)and(iv)

wholly parabolic

wholly rectangular

parabolic above neutral axis and rectangular below neutral axis

rectangular above neutral axis and parabolic below neutral axis

Answer is:

is maximum at neutral axis

decreases below the neutral axis and increases above the neutral axis

increases below the neutral axis and decreases above the neutral axis

remains same

Answer is:

increasing the depth of beam

using thinner bars but more in number

using thicker bars but less in number

providing vertical stirrups

Answer is:

xv - TC

Tv + Tc

Answer is: