Civil Engineering - Concrete Technology

36. 

The final operation of finishing floors, is known as

A. screeding
B. floating
C. trowelling
D. finishing
E. all the above.

Answer: Option C

Explanation:

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37. 

The internal dimensions of a ware house are 15 m x 5.6 m, and the maximum height of piles is 2.70 m, the maximum number of bags to be stored in two piles, are

A. 1500 bags
B. 2000 bags
C. 2500 bags
D. 3000 bags
E. 4000 bags

Answer: Option D

Explanation:

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38. 

For an ordinary Portland cement

A. residual does not exceed 10% when sieved through IS Sieve No. 9
B. soundness varies from 5 to 10 mm
C. initial setting time is not less than 30 minutes
D. compressive stress after 7 days, is not less than 175 kg/cm2
E. all the above.

Answer: Option C

Explanation:

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39. 

The maximum thickness of concrete floor of a cement warehouse, is

A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
E. 30 cm

Answer: Option D

Explanation:

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40. 

A construction joint is provided where

A. bending moment is small
B. shear force is small
C. the member is supported by other member
D. all the above.

Answer: Option D

Explanation:

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