Civil Engineering MCQs

Page No. 244

The ultimate consolidation settlement of a soil is________________?


adirectly proportional to the voids ratio


b directly proportional to the compression index


c inversely proportional to the compression index


dnone of the above



The maximum dry density upto which any soil can be compacted depends upon____________?


amoisture content only


b amount of compaction energy only


cboth moisture content and amount of compaction energy


dnone of the above



Coarse grained soils are best compacted by a_______________?


adrum roller


brubber tyred roller


csheep’s foot roller


dvibratory roller


View Answer vibratory roller

Coefficient of compressibility is_______________?


aconstant for any type of soil


bdifferent for different types of soils and also different for a soil under different states of consolidation


cdifferent for different types of soils but same for a soil under different states of consolidation


dindependent of type of soil but depends on the stress history of soil



Compressibility of sandy soils is______________?


a almost equal to that of clayey soils


bmuch greater than that of clayey soils


cmuch less than that of clayey soils


dnone of the above



Clay layer A with single drainage and coefficient of consolidation Cv takes 6 months to achieve 50% consolidation. The time taken by clay layer B of the same thickness with double drainage and coefficient of consolidation Cv/2 to achieve the same degree of consolidation is_________________?


a 3 months


b 6 months


c12 months


d24 months


View Answer 3 months

Which one of the following clays behaves like a dense sand ?


a over-consolidated ciay with a high over-consolidation ratio


bover-consolidated clay with a low over-consolidation ratio


cnormally consolidated clay


d under-consolidated clay



Degree of consolidation is________________?


a directly proportional to time and inversely proportional to drainage path


bdirectly proportional to time and inversely proportional to square of drainage path


c directly proportional to drainage path and inversely proportional to time


d directly proportional to square of drainage path and inversely proportional to time



Coefficient of consolidation for clays normally_______________?


adecreases with increase in liquid limit


b increases with increase in liquid limit


c first increases and then decreases with increase in liquid limit


d remains constant at all liquid limits



Time factor for a clay layer is_______________?


aa dimensional parameter


b directly proportional to permeability of soil


c inversely proportional to drainage path


d independent of thickness of clay layer



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