RCC Structures Design MCQ Questions & Answers

81

In the zone of R.C.C. beam where shear stress is less than 5 kg/cm², nominal reinforcement is provided at a pitch of

A) One-half lever arm of the section B) One-third lever arm of the section C) Lever arm of the section D) One and half lever arm of the section

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Answer & Solution

Answer: Option C

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82

Distribution reinforcement in a simply supported slab, is provided to distribute

A) Load B) Temperature stress C) Shrinkage stress D) All the above

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Answer: Option D

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83

If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness ratio, is

A) 40 B) 45 C) 50 D) 55

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Answer: Option D

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84

The system in which high tensile alloy steel bars (silica manganese steel) are used as pre-stressing tendons, is known as

A) Freyssinet system B) Magnel-Blaton system C) C.C.L. standard system D) Lee-McCall system

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Answer: Option D

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85

The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or

A) 12 bar diameters B) 18 bar diameters C) 24 bar diameters D) 30 bar diameters

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Answer: Option C

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86

Long and short spans of a two way slab are $${l_{\text{y}}}$$ and $${l_{\text{x}}}$$ and load on the slab acting on strips parallel to $${l_{\text{x}}}$$ and $${l_{\text{y}}}$$ be w_x and w_y respectively. According to Rankine Grashoff theory

A) $$\frac{{{{\text{w}}_{\text{x}}}}}{{{{\text{w}}_{\text{y}}}}} = \frac{{{l_{\text{y}}}}}{{{l_{\text{x}}}}}$$ B) $$\frac{{{{\text{w}}_{\text{x}}}}}{{{{\text{w}}_{\text{y}}}}} = {\left( {\frac{{{l_{\text{y}}}}}{{{l_{\text{x}}}}}} \right)^2}$$ C) $$\frac{{{{\text{w}}_{\text{x}}}}}{{{{\text{w}}_{\text{y}}}}} = {\left( {\frac{{{l_{\text{y}}}}}{{{l_{\text{x}}}}}} \right)^4}$$ D) None of these

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Answer: Option C

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87

A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n₁. If f_c and f_t are permissible compressive and tensile stresses, the moment to resistance of the beam, is

A) $${\text{bn}}\frac{{{{\text{f}}_{\text{c}}}}}{2}\left( {{\text{d}} - \frac{{\text{n}}}{3}} \right)$$ B) $${\text{At}}{{\text{f}}_{\text{t}}}\left( {{\text{d}} - \frac{{\text{n}}}{3}} \right)$$ C) $$\frac{1}{2}{{\text{n}}_1}\left( {1 - \frac{{{{\text{n}}_1}}}{3}} \right){\text{cb}}{{\text{d}}^2}$$ D) All the above

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Answer & Solution

Answer: Option D

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88

The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend, is

A) 30° B) 40° C) 45° D) All the above

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Answer: Option D

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89

If ‘W’ is the load on a circular slab of radius ‘R’, the maximum radial moment at the centre of the slab, is

A) $$\frac{{{\text{W}}{{\text{R}}^2}}}{{16}}$$ B) $$\frac{{2{\text{W}}{{\text{R}}^2}}}{{16}}$$ C) $$\frac{{3{\text{W}}{{\text{R}}^2}}}{{16}}$$ D) $$\frac{{5{\text{W}}{{\text{R}}^2}}}{{16}}$$

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Answer: Option C

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90

If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is

A) $$\frac{{{\text{W}}{{\text{R}}^2}}}{{16}}$$ B) $$\frac{{2{\text{W}}{{\text{R}}^2}}}{{16}}$$ C) $$\frac{{3{\text{W}}{{\text{R}}^2}}}{{16}}$$ D) Zero

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Answer: Option C

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RCC Structures Design MCQ Questions & Answers | Civil Engineering