Failure Envelopes and Earth Pressure MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Failure Envelopes and Earth Pressure, a fundamental topic in the field of Foundation Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Failure Envelopes and Earth Pressure MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Failure Envelopes and Earth Pressure mcq questions that explore various aspects of Failure Envelopes and Earth Pressure problems. Each MCQ is crafted to challenge your understanding of Failure Envelopes and Earth Pressure principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Foundation Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Failure Envelopes and Earth Pressure MCQs are your pathway to success in mastering this essential Foundation Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Failure Envelopes and Earth Pressure. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Failure Envelopes and Earth Pressure knowledge to the test? Let's get started with our carefully curated MCQs!

Failure Envelopes and Earth Pressure MCQs | Page 11 of 19

Discover more Topics under Foundation Engineering

Q101.
The critical height for an unsupported vertical cut in cohesive soil is given by _____________

a.

\(H_c=\frac{q-2c cot⁡α}{γ} \)

b.

\(H_c=\frac{4c tan⁡α}{γ} \)

c.

\(H_c=\frac{4 cot⁡α}{γ} \)

d.

\(H_c=\frac{cot⁡α}{γ} \)

Discuss
Answer: (b).\(H_c=\frac{4c tan⁡α}{γ} \)
Q102.
For an inclined back and surcharge, if P₁, is horizontal pressure and W is weight of soil wedge, then the total pressure is given by __________

a.

P=P₁+W

b.

\(P=\sqrt{P_1^2+W^2}\)

c.

P=(P₁+W)2

d.

P=P₁-W

Discuss
Answer: (b).\(P=\sqrt{P_1^2+W^2}\)
Q103.
When the top tension portion of the wall in cohesive soil is neglected, the total lateral thrust is given by __________

a.

pₐ=\(\frac{1}{2}\)Kₐ γH² cot² α-2c cot⁡α

b.

pₐ=\(\frac{1}{2}\)Kₐ γH² cot² α-2c cot⁡α+\(\frac{2c^2}{γ}\)

c.

pₐ=\(\frac{1}{2}\)Kₐ γH² cot² α-2c cot⁡α-\(\frac{2c^2}{γ}\)

d.

pₐ=Kₐ H²-2c cot⁡α

Discuss
Answer: (b).pₐ=\(\frac{1}{2}\)Kₐ γH² cot² α-2c cot⁡α+\(\frac{2c^2}{γ}\)
Q104.
If the cohesive backfill carries a surcharge of q per unit area, then the lateral pressure is increased by _________

a.

Kₐ q

b.

q

c.

Kₐ

d.

Kₐ/q

Discuss
Answer: (a).Kₐ q
Q105.
The lateral pressure for cohesive backfill with surcharge q is ___________

a.

pₐ=γzcot² α-2c cot⁡α+qcot² α

b.

pₐ=γzcot² α+2c cot⁡α+cot²α

c.

pₐ=-2c cot⁡α-cot² α

d.

pₐ=γzcot² α/2c cot⁡α

Discuss
Answer: (a).pₐ=γzcot² α-2c cot⁡α+qcot² α
Q106.
For a cohesive backfill with surcharge q, when at depth z₀, pₐ=0, then the depth z₀ is ___________

a.

\(z_0=\frac{q-2c cot⁡α}{γ} \)

b.

\(z_0=\frac{2c tan⁡α}{γ}-\frac{q}{γ} \)

c.

\(z_0=\frac{2 cot⁡α}{γ}+\frac{q}{γ} \)

d.

\(z_0=\frac{cot⁡α}{γ}-\frac{q}{γ} \)

Discuss
Answer: (b).\(z_0=\frac{2c tan⁡α}{γ}-\frac{q}{γ} \)
Q107.
In case of passive state of plastic state of equilibrium, the lateral pressure is the _________

a.

minor principal stress

b.

major principal stress

c.

major principal plane

d.

minor principal plane

Discuss
Answer: (b).major principal stress
Q108.
The passive earth pressure intensity is given by _______

a.

pₚ=γz cot² α

b.

pₚ=γz tan² α

c.

pₚ=γz sin² α

d.

pₚ=γz cos² α

Discuss
Answer: (b).pₚ=γz tan² α
Q109.
The passive earth pressure intensity in terms of coefficient of passive earth pressure is _________

a.

pₚ=Kₚ γH

b.

pₚ=γH

c.

pₚ=Kₚ H

d.

pₚ=Kₚ γ

Discuss
Answer: (a).pₚ=Kₚ γH
Q110.
The ratio between coefficients of passive and active earth pressure is __________

a.

cot² \((45°+\frac{φ}{2})\)

b.

cos² \((45°+\frac{φ}{2})\)

c.

tan⁴ \((45°+\frac{φ}{2})\)

d.

sin² \((45°+\frac{φ}{2})\)

Discuss
Answer: (c).tan⁴ \((45°+\frac{φ}{2})\)
Page 11 of 19