Civil Engineering MCQs

Page No. 228

The weight of reinforced concrete, is generally taken as______________?


a2200 kg/m3


b2300 kg/m3


c2400 kg/m3


d2500 kg/m3


View Answer 2400 kg/m3

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


aWR²/16


b2WR²/16


c3WR²/16


dZero


View Answer 3WR²/16

In a combined footing if shear stress exceeds 5 kg/cm2, the nominal stirrups provided are______________?


a 6 legged


b8 legged


c10 legged


d12 legged


View Answer 12 legged

Based on punching shear consideration, the overall depth of a combined footing under a column A, is_______________?


a(Area of the column A × Safe punching stress)/Load on column A


b(Perimeter of column A × Safe punching stress)/(Load on column A + Upward pressure × Area of the column)


c(Perimeter of column A × Safe punching stress)/(Load on column A × Upward pressure × Area of the column)


dNone of these



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


a 6 mm


b8 mm


c10 mm


d12 mm


View Answer 12 mm

An intermediate T-beam reinforced with two layers of tensile steel with clear cover 13 cm encasted with the floor of a hall 12 metres by 7 metres, is spaced at 3 metres from adjoining beams and if the width of the beam is 20 cm, the breadth of the flange is__________________?


a300 cm


b233 cm


c 176 cm


d236 cm


View Answer 176 cm

In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed________________?


a10 mm


b15 mm


c 20 mm


d25 mm


View Answer 25 mm

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_________________?


a20 cm


b 25 cm


c30 cm


d35 cm


View Answer 30 cm

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


a One diameter of thinner bar


bOne diameter of thicker bar


cTwice the diameter of thinner bar


d None of these



The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is_______________?


a 51.5


b52.5


c 53.5


d 54.5


View Answer 53.5

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