Civil Engineering MCQs

Page No. 254

In a spherical dome the hoop stress due to a concentrated load at crown is_______________?


a compressive everywhere


btensile everywhere


cpartly compressive and partly tensile


dzero


View Answer tensile everywhere

A beam curved in plan is designed for_______________?


abending moment and shear


b bending moment and torsion


c shear and torsion


d bending moment, shear and torsion



Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to_____________?


adeflect downward


bdeflect upward


cdeflect downward or upward


dnone of the above


View Answer deflect downward

As per Whitney’s theory, the maximum moment of resistance of the balanced section of a beam of width b and effective depth d is given by_______________?


a ^acybd2


b^acybd2


c0.185acybd2


d0.43acybd2 where acy is the cylinder compressive strength of concrete


View Answer ^acybd2

According to Whitney’s theory, depth of stress block for a balanced section of a concrete beam is limited to_______________?


a0.43 d


b0.537 d


c0.68 d


d0.85 d where d is effective depth of beam[ES 2k]


View Answer 0.537 d

The design yield stress of steel according to IS: 456-1978 is_______________?


a 0.37 fy


b0.57 fy


c0.67 fy


d0.87 fy where fy is the characteristic yield strength of steel



Assertion A : The load factor for live load is greater than that for dead load. Reason R : The live loads are more uncertain than dead loads? 0 Select your answer based on the coding system given below :


aBoth A and R are true and R is the correct explanation of A.


bBoth A and R are true but R is not the correct explanation of A.


cA is true but R is false.


dA is false but R is true.



According to Whitney’s theory, ultimate strain of concrete is assumed to be_____________?


a0.03%


b 0.1%


c0.3%


d3%


View Answer 0.3%

The load factors for live load and dead load are taken respectively as_________________?


a1.5 and 2.2


b2.2 and 1.5


c1.5 and 1.5


d2.2 and 2.2


View Answer 2.2 and 1.5

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of__________________?


a0.367 xu


b0.416 xu


c0.446 xu


d0.573 xu where xu is the depth of neutral axis at the limit state of collapse


View Answer 0.416 xu

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