Download DBATU B.Tech 2019 Oct-Nov Civil-CE 5th Sem Soil Mechanics Question Paper

DR. BABASAHEB AMBEDKAR TECHNOLOGICAL UNIVERSITY, LONERE

Mid Semester Examination – Sept./Oct. 2019

Course: B. Tech in Civil Engineering

Subject Name: Soil Mechanics

Sem: V

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Subject Code: BTCVC 503

Max Marks: 20

Date: 24/09/2019

Duration: 1 Hr.

Instructions to the Students:

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1. All questions are compulsory.
2. Assume suitable data if necessary.

Q.1 Answer the following

1. Lacustrine soil is.....
   1. soil deposited in sea
   2. Windblown deposit

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   3. Soil deposited in lake
   4. soil formed by vegetation matter
2. For a given soil, following unit weight remains constant
   1. Y
   2. Yb

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   3. Ysat
   4. Ys
3. Due to remoulding of clay, the strength
   1. decreases
   2. increases

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   3. remains constant
   4. none
4. At shrinkage limit, degree of saturation is-
   1. 0%
   2. 50%

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   3. 75%
   4. 100%
5. The biggest size of clay particle is...
   1. 0.0002 mm
   2. 0.002 mm

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   3. 0.02 mm
   4. 0.075 mm
6. With the rise of temperature, permeability ..
   1. increases
   2. decreases

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   3. remains constant
   4. none

Q.2 Solve Any Two of the following.

1. Explain void ratio, porosity and prove that n = e / (1+e)

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2. Explain constant head permeability test with neat sketch.
3. The void ratio and specific gravity of soil sample are 0.65 and 2.65 resp., while voids are 90% saturated. Find bulk density, dry density and water content.

Q.3 Solve Any One of the following.

1. What is coefficient of permeability? Derive the equation for average permeability perpendicular to bedding plane.
2. Explain three phase system of soil and prove that Yd = GYw / ( 1 + e)

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