Test: Effect of water table - Civil Engineering (CE) MCQ

Test: Effect of water table - Civil Engineering (CE) MCQ

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10 Questions MCQ Test Foundation Engineering - Test: Effect of water table

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

When the water table is above the base of the footing, the submerged weight ‘γ’ can be used to compute __________

Detailed Solution for Test: Effect of water table - Question 1

When the water table is above the base of the footing, the submerged weight ‘γ’ should be used for the soil below the water table for computing the effective pressure or the surcharge.

Test: Effect of water table - Question 2

When the water table is close to the ground surface, the bearing capacity of a soil is reduced to

Detailed Solution for Test: Effect of water table - Question 2

Effect of water table on bearing capacity:

Case 1: when the water table is at a depth equal to or greater than ‘B’ from the base of the foundation.

i.e water table does not affect the bearing capacity of soil below the wedge zone.
Case 2: When the water table is at a depth equal to or greater than ’Df’ but less than (Df +B).

In this case, γtDf does not affect due to the water table but the soil lying below the foundation level will get affected hence concept of effective unit weight is used.

Case 3: When the water table lies between ground level and foundation level.

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Test: Effect of water table - Question 3

The equation Nc = (Nq – 1) cot φ, have been adopted by ___________

Detailed Solution for Test: Effect of water table - Question 3

The two equations Nc = (Nq – 1) cot φ and Nq = tan2 (45 + φ/2) ex tan φ have been adopted by i) Terzaghi and Peck ii) Hansen iii) Vesic iv) Meyerhof and Bureau of Indian standards.

Test: Effect of water table - Question 4

Which of the following term does not contribute to q f?

Detailed Solution for Test: Effect of water table - Question 4

The Nγ term does not contribute significantly to qf so that almost any reasonable value can be used. Bureau of Indian standards (BIS) recommends using the value of Nγ, given by Vesic.

Test: Effect of water table - Question 5

In the Bowl’s method for finding the effect of water table, which of the following factor is used for soil in the wedge zone?

Detailed Solution for Test: Effect of water table - Question 5

In the third method (Bowles, 1988), no water reduction factor is used, but effective unit weight (γe) is used for the soil in the wedge zone.

Test: Effect of water table - Question 6

The value of Nc and Nq are same for, which of the following methods?

Detailed Solution for Test: Effect of water table - Question 6

The value of Nc and Nq are same for Meyerhof, Hansen and Vesic method, while subscripts for Nγ identify the author, i.e. N γ(H) = valued by Hansen etc.

Test: Effect of water table - Question 7

Which of the following is an essential difference between Vesic’s and Hansen’s procedure?

Detailed Solution for Test: Effect of water table - Question 7

The essential difference in Vesic’s and Hansen’s procedure are i) use of slightly different values of Ny and ii) a variation on some of Hansen’s inclination, base and ground factors.

Test: Effect of water table - Question 8

Which of the following N factors has the widest range of values?

Detailed Solution for Test: Effect of water table - Question 8

The Nγ factor has the widest suggested range of any value of N factors. A literature value reveals that for φ = 40°, 38 ≤ Nγ ≤ 192.

Test: Effect of water table - Question 9

Meyerhof’s extended the analysis of plastic equilibrium of a surface footing to __________

Detailed Solution for Test: Effect of water table - Question 9

M Meyerhof’s extended the analysis of plastic equilibrium of a surface footing to Shallow and Deep foundation according to both Terzaghi and Meyerhof analysis.

Test: Effect of water table - Question 10

The factor N γ(M) identifies which of the following author?

Detailed Solution for Test: Effect of water table - Question 10

The factor N γ(M) gives values by Meyerhof, as it has the subscript (M) in it.

Foundation Engineering

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Foundation Engineering

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