RCC STRUCTURES DESIGN QUIZ

The minimum clear cover for R.C.C. columns shall be

Greater of 25 mm or diameter

Greater of 40 mm or diameter

Smaller of 40 mm or diameter

Smaller of 25 mm or diameter

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Spacing of stirrups in a rectangular beam, is

Increased at the ends

Kept constant throughout the length

Decreased towards the centre of the beam

Increased at the centre of the beam

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If the ratio of long and short spans of a two way slab with corners held down is r, the actual reduction of B.M. is given by

(5/6) (r²/1 + r⁴) M

(5/6) (r²/1 + r³) M

(5/6) (r/1 + r²) M

(5/6) (r²/1 + r²) M

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The neutral axis of a T-beam exists

Within the flange

All listed here

Below the slab

At the bottom edge of the slab

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A column is regarded as long column if the ratio of its effective length and lateral dimension, exceeds

20

10

15

25

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As per I.S. 456 - 1978, the pH value of water shall be

Equal to 6

Equal to 7

Not less than 6

Less than 6

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If the maximum bending moment of a simply supported slab is M Kg.cm, the effective depth of the slab is (where Q is M.R. factor)

√(M/100Q)

√(M/Q)

M/100Q

M/10√Q

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The minimum head room over a stair must be

205 cm

210 cm

200 cm

230 cm

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For a circular slab carrying a uniformly distributed load, the ratio of the maximum negative to maximum positive radial moment, is

3

5

1

2

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Columns may be made of plain concrete if their unsupported lengths do not exceed their least lateral dimension

Two times

Five times

Four times

Three times

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