Civil Engineering MCQs

Page No. 230

To ensure that the hogging bending moment at two points of suspension of a pile of length L equals the sagging moment at its centre, the distances of the points of suspension from either end, is________________?


a0.107 L


b 0.207 L


c0.307 L


d 0.407 L


View Answer 0.207 L

A ribbed slab is provided for______________?


a A plain ceiling


bThermal insulation


cAcoustic insulation


dAll the above


View Answer All the above

A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is___________________?


a30


b35


c40


d45


View Answer 40

A T-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis______________?


a Remains within the flange


bRemains below the slab


c Coincides the geometrical centre of the beam


d None of these



In a singly reinforced beam____________?


a Compression is borne entirely by concrete


b Steel possesses initial stresses when embedded in concrete


c Plane sections transverse to the centre line of the beam before bending remain plane after bending


dElastic moduli for concrete and steel have different values within the limits of deformation of the beam



In a cantilever retaining wall without a heel slab______________?


aThickness of the stem is kept same throughout


bBase slab is made 10 cm thicker than the stem


cWidth of the base slab is kept 0.7 time the total height of the wall


d All the above


View Answer All the above

The ratio of the breadth to effective depth of a beam is kept_______________?


a 0.25


b0.50


c0.70


d 0.75


View Answer 0.50

If the shear stress in a R.C.C. beam is_______________?


aEqual or less than 5 kg/cm2, no shear reinforcement is provided


bGreater than 4 kg/cm2, but less than 20 kg/cm2, shear reinforcement is provided


cGreater than 20 kg/cm2, the size of the section is changed


dAll the above


View Answer All the above

For a continuous floor slab supported on beams, the ratio of end span length and intermediate span length, is____________________?


a0.6


b0.7


c0.8


d0.9


View Answer 0.9

If P kg/m2 is the upward pressure on the slab of a plain concrete footing whose projection on either side of the wall is a cm, the depth of foundation D is given by________________?


aD = 0.00775 aP


b D = 0.0775 aP


cD = 0.07775 aP


dD = 0.775 Pa


View Answer D = 0.00775 aP

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