Civil Engineering MCQs

Page No. 260

According to IS : 456- 1978, minimum slenderness ratio for a short column is_______________?


a less than 12

✓


b less than 18

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cbetween 18 and 24

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dmore than 24

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View Answer less than 12

For a simply supported beam of span 15m, the minimum effective depth to satisfy the vertical deflection limits should be________________?


a 600 mm

✖


b750 mm

✓


c900 mm

✖


dmore than 1 m

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View Answer 750 mm

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


a24 to 48 hours

✓


b3 days

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c7 days

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d14 days

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View Answer 24 to 48 hours

According to IS : 456-1978, the cblumn or the strut is the member whose effective length is greater than________________?


a the least lateral dimension

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b 2 times the least lateral dimension

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c3 times the least lateral dimension

✓


d4 times the least lateral dimension

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Diagonal tension in a beam______________?


ais maximum at neutral axis

✖


bdecreases below the neutral axis and increases above the neutral axis

✖


cincreases below the neutral axis and decreases above the neutral axis

✓


d remains same

✖



For a cantilever of effective depth of 0.5m, the maximum span to satisfy vertical deflection limit is______________?


a3.5 m

✓


b4 m

✖


c4.5 m

✖


d5 m

✖


View Answer 3.5 m

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


a50 mm

✖


b75 mm

✓


c100 mm

✖


d120 mm

✖


View Answer 75 mm

One of the criteria for the effecvve width of flange of T-beam is bf =—+ bw +6Df 6 In above formula, l0 signifies_______________?


aeffective span of T-beam

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bdistance between points of zero moments in the beam

✓


cdistance between points of maximum moments in the beam

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dclear span of the T-beam

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The individual variation between test strength of sample should not be more than______________?


a±5% of average

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b ± 10% of average

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c ± 15% of average

✓


d±20% of average

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View Answer ± 15% of average

In case of hand mixing of concrete, the extra cement to be added is__________________?


a5%

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b10%

✓


c15%

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d20%

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View Answer 10%

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