Civil Engineering - Building Construction

26. 

The form work from the sides of beams can be removed only after

A. 1 day
B. 4 days
C. 7 days
D. 14 days.

Answer: Option A

Explanation:

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27. 

In soils possessing low bearing capacity, the type of foundation generally provided, is

A. column footing
B. grillage footing
C. raft footing
D. mat footing
E. all the above.

Answer: Option E

Explanation:

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28. 

Which one of the following activities is not correct as applicable to brick corbels

A. the maximum projection of the corbel should not be more than the thickness of the wall
B. the maximum projection of each corbel course should be limited to a quarter brick at a time
C. the discontinuous corbels are used to carry heavy concentrated loads
D. stretcher bond is generally used for the construction of brick corbel.

Answer: Option D

Explanation:

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29. 

Pick up the correct statements from the following :

A. cracks appear on the plastered surface in the form of hair cracks
B. in brick work, the efflorescence is removed by applying a solution of zinc sulphate and water
C. excessive thermal variations in the backing or plaster causes the plaster to fall
D. all the above.

Answer: Option D

Explanation:

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30. 

Rotary drilling is the fastest method in case of

A. rocky soils
B. clay soils
C. sandy soil
D. all of these.

Answer: Option D

Explanation:

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