1. The maximum compressive strain permitted in R.C.C. columns at failure load is _____.
[A] 0.002
[B] 0.003
[C] 0.035
[D] 0.004
Answer: Option A
2. In working stress design, if the modular ratio is ‘m’, steel ratio is ‘r’, the critical neutral axis constant ‘k’ is given by _____.
[A] m/m-r
[B] m/m+r
[C] m+r/m
[D] m-r/m
Answer: Option B
3. Modular ratio (m) for concrete can be calculated as _____.
[A] 250/σcbc
[B] 280/σcbc
[C] 280/σcbc
[D] 250/σcbc
Answer: Option B
4. In limit state design, partial safety factors are applied to _____.
[A] Loads
[B] Material stresses
[C] Both loads and material stresses
[D] Size of structural member
Answer: Option C
5. Brass cannot be used as reinforcement in concrete because _____.
[A] Its density is greater than concrete
[B] It density is smaller than iron
[C] It is very expensive
[D] Its coefficient of thermal expansion is higher than concrete
Answer: Option D