1. A doubly reinforced beam is considered as less economical as compared to a singly reinforced beam because _____.
[A] The depth of section is small
[B] Concrete is under-stressed
[C] Compressive steel is under-stressed
[D] Tensile steel is under-stressed
Answer: Option C
2. For normal M20 reinforced concrete, the minimum time of removing the props of form work for slabs with spans less than 4.5m is _____.
[A] 3 days
[B] 21 days
[C] 7 days
[D] 28 days
Answer: Option C
3. Shrinkage crack in RCC slab can appear due to _____.
[A] Improper curing
[B] Improper loading
[C] Improper formwork
[D] Improper mixing of concrete
Answer: Option A
4. The under-reamed piles are connected by a reinforced beam known as _____.
[A] plinth beam
[B] grade beam
[C] arch beams
[D] plate beam
Answer: Option B
5. A reinforced concrete beam is subjected to 5 kNm bending moment due to dead load and 25 kNm bending moment due to live load. What should be the design bending moment for limit state of collapse?
[A] 30.0 kN.m
[B] 45.0 KN.m
[C] 34.5 kN.m
[D] 50.0 kN.m
Answer: Option B