Concrete Technology And Design Of Concrete Structures MCQ Questions & Answers

Concrete Technology And Design Of Concrete Structures MCQ Questions & Answers | Civil Engineering

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The maximum value of hoop compression in a dome is given by (where, w = load per unit area of surface of dome R = radius of curvature d = thickness of dome)

A) wR / 4d B) wR/2d C) wR/d D) 2wR/d

Discuss

Answer & Solution

Answer: Option B

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Stress strain curve of high tensile steel

A) Has a definite yield point B) Does not show definite yield point but yield point is defined by 0.1% proof stress C) Does not show definite yield point but yield point is defined by 0.2% proof stress D) Does not show definite yield point but yield point is defined by 2% proof stress

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Answer & Solution

Answer: Option C

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While designing the pile as a column, the end conditions are nearly

A) Both ends hinged B) Both ends fixed C) One end fixed and other end hinged D) One end fixed and other end free

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Answer & Solution

Answer: Option C

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In a spherical dome subjected to concentrated load at crown or uniformly distributed load, the meridional force is always

A) Zero B) Tensile C) Compressive D) Tensile or compressive

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Answer & Solution

Answer: Option C

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For a continuous slab of 3 m x 3.5 m size, the minimum overall depth of slab to satisfy vertical deflection limits is

A) 50 mm B) 75 mm C) 100 mm D) 120 mm

Discuss

Answer & Solution

Answer: Option B

Solution:

The given slab dimensions are 3m x 3.5m. Since (3.5/3) < 2, it is classified as a two-dimensional slab.

Deflection criteria as per IS 456:2000:
- For a simply supported slab, the span/depth ratio = 35
- For a continuous slab, the span/depth ratio = 40

Since we always design the slab for the shorter span (3m):

Effective depth (d) = 3000 mm / 40 = 75 mm

Thus, the minimum overall depth of the slab should be 75 mm to satisfy vertical deflection limits.

The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on

A) Top face perpendicular to wall B) Bottom face perpendicular to wall C) Both top and bottom faces perpendicular to wall D) None of the above

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Answer & Solution

Answer: Option A

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For walls, columns and vertical faces of all structural members, the form work is generally removed after

A) 24 to 48 hours B) 3 days C) 7 days D) 14 days

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Answer & Solution

Answer: Option A

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As compared to ordinary portland cement, high alumina cement has

A) Higher initial setting time but lower final setting time B) Lower initial setting time but higher final setting time C) Higher initial and final setting times D) Lower initial and final setting times

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Answer & Solution

Answer: Option A

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The compressive strength of 100 mm cube as compared to 150 mm cube is always

A) Less B) More C) Equal D) None of the above

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Answer & Solution

Answer: Option B

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Approximate value of shrinkage strain in concrete, is

A) 0.003 B) 0.0003 C) 0.00003 D) 0.03

Discuss

Answer & Solution

Answer: Option B

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