Question:

An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at

A.

25°

B.

35°

C.

45°

D.

55°

Answer» c. 45°

Question:

An R.C.C. beam of 25 cm width and 50 cm effective depth has a clear span of 6 metres and carries a U.D.L. of 3000 kg/m inclusive of its self weight. If the lever arm constant for the section is 0.865, the maximum intensity of shear stress, is

A.

8.3 kg/cm2

B.

7.6 kg/cm2

C.

21.5 kg/cm2

D.

11.4 kg/cm2

Answer» a. 8.3 kg/cm2

Question:

According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150 gradeconcrete, is

A.

5 kg/cm2

B.

10 kg/cm2

C.

15 kg/cm2

D.

20 kg/cm2

Answer» a. 5 kg/cm2

Question:

Cantilever retaining walls can safely be used for a height not more than

A.

3 m

B.

4 m

C.

5 m

D.

6 m

Answer» d. 6 m

Question:

The maximum area of tension reinforcement in beams shall not exceed

A.

0.15 %

B.

1.5 %

C.

4 %

D.

1 %

Answer» c. 4 %

Question:

The width of the flange of a T-beam, which may be considered to act effectively withthe rib depends upon

A.

Breadth of the rib

B.

Overall thickness of the rib

C.

Centre to centre distance between T-beams

D.

All the above

Answer» d. All the above

Question:

The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes

A.

With the horizontal

B.

With the vertical

C.

With the perpendicular to the inclined plane of the soil

D.

None of these

Answer» a. With the horizontal

Question:

According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than

A.

20 cm

B.

30 cm

C.

40 cm

D.

75 cm

Answer» b. 30 cm