Civil Engineering MCQs

Page No. 237

A pre-cast pile generally used, is______________?


aCircular


bSquare


cOctagonal


dSquare with corners chamfered



An R.C.C beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is__________________?


a Safe in shear


b Is safe with stirrups


c Is safe with stirrups and inclined members


d Needs revision of the section


View Answer Safe in shear

The minimum thickness of a flat slab is taken_________________?


aL/32 for end panels without drops


b L/36 for end panels without drops


cL/36 for interior panels without drop


dAll the above


View Answer All the above

The neutral axis of a T-beam exists_________________?


a Within the flange


bAt the bottom edge of the slab


cBelow the slab


dAll the above


View Answer All the above

The design of heel slab of a retaining wall is based on the maximum bending moment due to______________?


aIts own weight


bWeight of the soil above it


cLoad of the surcharge, if any


dAll the above


View Answer All the above

The minimum clear cover for R.C.C. columns shall be_________________?


aGreater of 40 mm or diameter


b Smaller of 40 mm or diameter


cGreater of 25 mm or diameter


dSmaller of 25 mm or diameter



An R.C.C. lintel is spanning an opening of 2 m span in a brick wall. The height of the roof is 2.9 m above the floor level and that of the opening is 2.1 m above the floor level. The lintel is to be designed for self weight plus_______________?


aTriangular load of the wall


bUDL of wall


c UDL of wall + load from the roof


dTriangular load + load from the roof



If C is creep coefficient, f is original pre-stress in concrete, m is modular ratio, E is Young’s modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is________________?


a(1 – C) mf – eE


b(C – 1)mf + eE


c(C – 1)mf – eE


d(1 – C)mf + eE


View Answer (C – 1)mf + eE

is the pre- stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The minimum stress on the beam subjected to a maximum bending moment is________________?


a f = (P/A) – (Z/M)


bf = (A/P) – (M/Z)


c f = (P/A) – (M/Z)


d f = (P/A) – (M/6Z)



Top bars are extended to the projecting parts of the combined footing of two columns Ldistance apart for a distance of_______________? 0 Top bars are extended to the projecting parts of the combined footing of two columns Ldistance apart for a distance of_______________?


a0.1 L from the outer edge of column


b0.1 L from the outer edge of column


cHalf the distance of projection


dOne -fourth the distance of projection



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