Civil Engineering - Building Construction

21. 

Grillage foundation

A. is used to transfer heavy structural loads from steel columns to a soil having low bearing capacity
B. is light and economical
C. does not require deep cutting as the required base area with required pressure intensity is obtained at a shallow depth
D. is constructed by rolled steel joists (R.S.J.) placed in single or double tier
E. all the above.

Answer: Option E

Explanation:

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22. 

The exterior angle between outer faces of a wall, is known as

A. turn
B. junction
C. quion
D. all the above.

Answer: Option C

Explanation:

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23. 

In jack arch floor, the rise is kept

A. 1/6th of the span
B. 1/8th of the span
C. 1/10th of the span
D. 1/12th of the span
E. 1/15th of the span.

Answer: Option D

Explanation:

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24. 

While designing a stair, the product of rise and going is approximately kept equal to

A. 350
B. 420
C. 450
D. 500
E. 600.

Answer: Option B

Explanation:

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25. 

For constructing a terrazo floor. Pick up the incorrect statement from the following :

A. a base course is prepared as in cement concrete flooring
B. a 32 mm thick layer of cement concrete (1 : 2 : 4) is laid on the base course and the surface is made smooth by trowelling
C. glass strips are driven into the layer according to the pattern required
D. after final grinding is over, oxalic acid mixed with water is spread over and rubbed hard with soft material
E. none of these.

Answer: Option B

Explanation:

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