RCC Structures Design MCQ Questions & Answers

21

In a combined footing for two columns carrying unequal loads, the maximum hogging bending moment occurs at

A) Less loaded column B) More loaded column C) A point of the maximum shear force D) A point of zero shear force

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Answer & Solution

Answer: Option D

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22

On piles, the drop must be at least

A) 80 cm B) 100 cm C) 120 cm D) 140 cm

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Answer & Solution

Answer: Option C

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23

If a bent tendon is required to balance a concentrated load W at the centre of the span L, the central dip h must be at least

A) $$\frac{{{\text{WL}}}}{{\text{P}}}$$ B) $$\frac{{{\text{WL}}}}{{2{\text{P}}}}$$ C) $$\frac{{{\text{WL}}}}{{3{\text{P}}}}$$ D) $$\frac{{{\text{WL}}}}{{4{\text{P}}}}$$

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Answer & Solution

Answer: Option D

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24

A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with 18.75 cm² steel. If the modular ratio (m) is 15, the depth of the neutral axis, is

A) 20 cm B) 25 cm C) 30 cm D) 35 cm

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Answer & Solution

Answer: Option C

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25

As per IS : 456, the reinforcement in a column should not be less than

A) 0.5% and not more than 5% of cross-sectional area B) 0.6% and not more than 6% of cross-sectional area C) 0.7% and not more than 7% of cross-sectional area D) 0.8% and not more than 8% of cross-sectional area

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Answer & Solution

Answer: Option D

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26

If the diameter of longitudinal bars of a square column is 16 mm, the diameter of lateral ties should not be less than

A) 4 mm B) 5 mm C) 6 mm D) 8 mm

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Answer & Solution

Answer: Option C

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27

The diameter of main bars in R.C.C. columns, shall not be less than

A) 6 mm B) 8 mm C) 10 mm D) 12 mm

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Answer & Solution

Answer: Option D

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28

Minimum spacing between horizontal parallel reinforcement of the same size should not be less than

A) One diameter B) 2.5 diameters C) 3 diameters D) 3.5 diameters

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Answer & Solution

Answer: Option A

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29

Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less than

A) One diameter of thinner bar B) One diameter of thicker bar C) Twice the diameter of thinner bar D) None of these

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Answer & Solution

Answer: Option B

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30

If W is total load per unit area on a panel, D is the diameter of the column head, L is the span in two directions, then the sum of the maximum positive bending moment and average of the negative bending moment for the design of the span of a square flat slab, should not be less than

A) $$\frac{{{\text{WL}}}}{{12}}{\left( {{\text{L}} - \frac{{2{\text{D}}}}{3}} \right)^2}$$ B) $$\frac{{{\text{WL}}}}{{10}}{\left( {{\text{L}} + \frac{{2{\text{D}}}}{3}} \right)^2}$$ C) $$\frac{{{\text{WL}}}}{{10}}{\left( {{\text{L}} - \frac{{2{\text{D}}}}{3}} \right)^2}$$ D) $$\frac{{{\text{WL}}}}{{12}}{\left( {{\text{L}} - \frac{{\text{D}}}{3}} \right)^2}$$

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Answer & Solution

Answer: Option C

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RCC Structures Design MCQ Questions & Answers | Civil Engineering