Civil Engineering - RCC Structures Design

26. 

If A is the area of the foundation of a retaining wall carrying a load W and retaining earth of weight w per unit volume, the minimum depth (h) of the foundation from the free surface of the earth, is

A.
B.
C.
D.

Answer: Option C

Explanation:

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27. 

In a cantilever retaining wall without a heel slab

A. thickness of the stem is kept same throughout
B. base slab is made 10 cm thicker than the stem
C. width of the base slab is kept 0.7 time the total height of the wall
D. all the above.

Answer: Option D

Explanation:

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28. 

The design of heel slab of a retaining wall, is based on the maximum bending moment due to:

A. its own weight
B. weight of the soil above it,
C. load of the surcharge, if any
D. upward soil reaction
E. all the above.

Answer: Option E

Explanation:

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29. 

If the modular ratio is m, steel ratio is r and overall depth of a beam is d, the depth of the critical neutral axis of the beam, is

A.
B.
C.
D.
E.

Answer: Option B

Explanation:

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30. 

A per IS : 1343, total shrinkage for a pretensioned beam, is

A. 3.0 x 10-2
B. 3.0 x 10-3
C. 3.0 x 10-4
D. 3.0 x 10-5
E. 3.5 x 10-5

Answer: Option E

Explanation:

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