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ISRO CE Quiz 1- Soil Mechanics & Foundation Engg.

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Question 1

Using Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\Civil Engg\Civil Engineeing-04-Apr\Civil-Engineering-2004_files\image192.png analysis and assuming planar failure as shown, the minimum factor of safety against shear failure of a vertical cut of height 4 m in a pure clay having cn = 120– kN/m2 and gsat = 20 kN/m3 is
failure plane

Question 2

A clay soil sample is tested in triaxial apparatus in consolidated-drained conditions at a cell pressure of 100 kN/m2 .What will be the pore water pressure at a deviator stress of 40kN/m?

Question 3

The e–lop p curve shown in the figure is representative of

Question 4

Which of following statement is NOT true in the context of capillary pressure in soils?

Question 5

A plate load test is carried out on a 300 mm × 300 mm plate placed at 2 m below the ground level to determine the bearing capacity of a 2m × 2m footing placed at same depth of 2m on a homogenous sand deposit extending 10 m below ground. The ground water table is 3m below the footing level. Which of the following factors does not require a correction to the bearing capacity determined based on the load test?

Question 6

There are two footings resting on the ground surface. One footing is square of dimension ‘B'. The other is strip footing with width ‘B’ Both of them are subjected to a loading intensity of q. The pressure intensity at any depth below the base of the footing along the centreline would be

Question 7

A braced cut, 5m wide and 7.5m deep is proposed in a cohesionless soil deposit having effective cohension and effective friction angle, . The first row of struts is to be installed at a depth of 0.5 m below ground surface and spacing between the struts should be 1.5m. If the horizontal spacing of struts is 3m and unit weight of the deposit is 20 kN/m3, the maximum strut load will be

Question 8

Statement (I): Clay exhibit more hygroscopicity than sands.
Statement (II): Clays are colloidal and consequently their specific surface is very high.

Question 9

Consider the following statements:
Liquefaction is a phenomenon
1). Observed in fine sands
2). Associated with the development of positive pore pressure
Which of these statements is/are correct?

Question 10

Consider the following statements:
Dewatering increases the slope stability of a cohesionless soil mainly because
1). It causes change in pH
2). It reduces pore water pressure
Which of these statements is/are correct?
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Sep 23ESE & GATE CE