2141. In a singly reinforced beam____________?

A. Compression is borne entirely by concrete
B. Steel possesses initial stresses when embedded in concrete
C. Plane sections transverse to the centre line of the beam before bending remain plane after bending
D. Elastic moduli for concrete and steel have different values within the limits of deformation of the beam
✅ The correct answer is option C.

2142. A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is___________________?

A. 30
B. 35
C. 40
D. 45
✅ The correct answer is option C.

2145. The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is_______________?

A. 51.5
B. 52.5
C. 53.5
D. 54.5
✅ The correct answer is option C.

2146. In the zone of R.C.C. beam where shear stress is less than 5 kg/cm2, nominal reinforcement is provided at a pitch of________________?

A. One -half lever arm of the section
B. One-third lever arm of the section
C. Lever arm of the section
D. One and half lever arm of the section
✅ The correct answer is option C.

2148. If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment____________________?

A. WL/2
B. WL/4
C. WL/6
D. WL/8
✅ The correct answer is option C.