Test: Analysis of Infinite Slopes - Civil Engineering (CE) MCQ

Test: Analysis of Infinite Slopes - Civil Engineering (CE) MCQ

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10 Questions MCQ Test Soil Mechanics - Test: Analysis of Infinite Slopes

Test: Analysis of Infinite Slopes for Civil Engineering (CE) 2024 is part of Soil Mechanics preparation. The Test: Analysis of Infinite Slopes questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Analysis of Infinite Slopes MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Analysis of Infinite Slopes below.
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Test: Analysis of Infinite Slopes - Question 1

Earth embankments or slopes are commonly required for which of the following purpose?

Detailed Solution for Test: Analysis of Infinite Slopes - Question 1

Earth embankments are commonly required for railways, roadways, earth dams, levees and river training works.

Test: Analysis of Infinite Slopes - Question 2

Slopes is classified into ____________ types.

Detailed Solution for Test: Analysis of Infinite Slopes - Question 2

Slopes may be of two types: i) infinite slopes and ii) finite slopes.

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Test: Analysis of Infinite Slopes - Question 3

Analysis of stability of slopes is used for determining ___________

Detailed Solution for Test: Analysis of Infinite Slopes - Question 3

An analysis of stability of slopes consist of determining the most severely stressed internal surface and the magnitude of the shearing stress to which it is subjected and determining the shearing stress along the surface.

Test: Analysis of Infinite Slopes - Question 4

A long natural slope of cohesion-less soil is inclined at 12° to the horizontal. What will be the factor of safety of the slope if φ = 30°?

Detailed Solution for Test: Analysis of Infinite Slopes - Question 4

Given φ = 30° and i = 12°
Formula, F = tan φ /tan i
F = tan 30° / tan 12°
F = 2.72.

Test: Analysis of Infinite Slopes - Question 5

In the limiting case of stability, the angle of slope is referred to as _____________

Detailed Solution for Test: Analysis of Infinite Slopes - Question 5

In the limiting case of stability, the angle of slope is known as the angle of repose φ.

Test: Analysis of Infinite Slopes - Question 6

Base failure of a finite slope occurs when the soil _______

Detailed Solution for Test: Analysis of Infinite Slopes - Question 6

Explanation:

Stability analysis of Finite Slope:

(i) If the slope is of finite extend bounded by top and bottom surfaces, then it is termed as finite slope.

(ii) Failure of finite slope takes places due to rotation and failure plane is either circular or spiral.

(iii) Finite slope may have any of the following mode of shear failure.

• Slope failure
• Base failure

Slope failure:

• Face Failure: Failure surface passes through slope above the toe. This type of failure takes places in case of steep slope, soil mass near the toe is rigid or stringer in comparison to soil mass above the toe.
• Toe Failure: It is the most common mode of failure of finite slope in which failure surface passes through the toe. This failure also occur in steel slope when soil mass is homogenous above and below the toe.

Base Failure:

• Failure surface passes below the toe.
• This type of failure takes place when soil mass below the toe is soft and weak in comparison to soil mass above the toe.
Test: Analysis of Infinite Slopes - Question 7

Which of the following is an example of slopes extending to infinity?

Detailed Solution for Test: Analysis of Infinite Slopes - Question 7

Slopes extending to infinity do not exist in nature.

Test: Analysis of Infinite Slopes - Question 8

If the soil properties for all identical depths below the surface are constant, it is a _________

Detailed Solution for Test: Analysis of Infinite Slopes - Question 8

If a slope represents the boundary surface of a semi-infinite soil mass, and the soil properties for all identical depths below the surface are constant, it is called an infinite slope.

Test: Analysis of Infinite Slopes - Question 9

Factor of safety with respect to height is given by ________ equation.

Detailed Solution for Test: Analysis of Infinite Slopes - Question 9

Since the factor of safety FC with respect to cohesion, also represent the factor of safety with respect to height
FC = C / Cm = HC / H
Where, Cm is the mobilized cohesion at a depth H.

Test: Analysis of Infinite Slopes - Question 10

The factor of safety against safety is given by ________ equation.

Detailed Solution for Test: Analysis of Infinite Slopes - Question 10

The factor of safety against sliding is given by equation:
F = τf /τ = tan φ / tan i.

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