Foundation Engineering SPPU Endsem Question Paper Nov 2022

Questions

1. Q1

   1. a)

      Explain the following terms: i) Coeff. of Compressibility ii) Compression Index iii) Coefficient of volume Compressibility iv) Degree of Consolidation v) Coeff. of Consolidation.

      Also asked:Nov 2025

      [5]
   2. b)

      Draw contact pressure diagram for surface and deep footing in clay for flexible and rigid footing.

      [6]
   3. c)

      An oedometer test gives time for 90% consolidation as 16 minutes on a 20 mm thick specimen (double drainage). Determine the time required for 50% consolidation for a clay bed 3m thick with single face drainage.

      [6]
   OR

2. Q2

   1. a)

      Discuss with sketch, logarithm of time fitting method for determination of coefficient of consolidation.

      Also asked:Nov 2025 ·May 2025 ·Nov 2024 ·Nov 2023 ·May 2023

      [5]
   2. b)

      Explain the following terms: i) Normally consolidated soil ii) Pre consolidated soil iii) Under consolidated soil.

      Also asked:May 2024 ·May 2023

      [6]
   3. c)

      The overburden pressure at the middle of 7.5 mm thick clayey layer increased from 2kg/cm 2 to 3.5kg/cm 2 . Find the settlement due to consolidation assuming liquid limit and initial void ratio of the clay as 36% and 0.82 respectively. 2

      [6]

3. Q3

   1. a)

      Discuss the necessity of pile foundation.

      [5]
   2. b)

      What is negative skin friction? How it is calculated for single pile embedded in two layers of clay.

      Also asked:May 2024 ·May 2023

      [6]
   3. c)

      20 piles are arranged in four rows and five columns. Calculate the efficiency of the pile group by Feld’s rule.

      [6]
   OR

4. Q4

   1. a)

      Explain the procedure for calculation of bearing capacity of single pile by static method?

      [5]
   2. b)

      Discuss static pile load test.

      Also asked:May 2023

      [6]
   3. c)

      A circular pile with 0.35m diameter and 10m length penetrates a deposit of clay having cohesion 5 kN/m 2 and mobilizing factor of 0.8. Calculate the ultimate frictional resistance of the pile.

      [6]

5. Q5

   1. a)

      Explain design steps of raft foundation by conventional (rigid) method.

      [6]
   2. b)

      Draw well foundation and state the function of each component.

      Also asked:Nov 2025 ·Nov 2024 ·May 2024 ·Nov 2023

      [6]
   3. c)

      Write a note on i) Uses of caissons ii) Sand island method

      [6]
   OR

6. Q6

   1. a)

      Explain the steps involved in proportioning of isolated footing.

      Also asked:May 2024

      [6]
   2. b)

      Define shift and tilt of well foundation. Enlist any four ways to rectify the tilt.

      [6]
   3. c)

      How the depth of well foundation is decided? Enlist the forces acting on well foundation.

      [6]

7. Q7

   1. a)

      Enlist types of cofferdams. Explain any one type with a neat sketch.

      Also asked:Nov 2025 ·Nov 2023

      [6]
   2. b)

      Discuss the design principle of undreamed pile.

      Also asked:Nov 2025 ·Nov 2023

      [6]
   3. c)

      Describe Stone Column Technique with a neat sketch.

      Also asked:Nov 2024 ·May 2023

      [6]
   OR

8. Q8

   1. a)

      Discuss preloading with prefabricated vertical drains/sand drains with a neat sketch.

      Also asked:Nov 2025 ·Nov 2023

      [6]
   2. b)

      Explain with a neat sketch the construction method of R.C. diaphragm wall.

      Also asked:May 2025 ·May 2023

      [6]
   3. c)

      Describe engineering problems associated with black cotton soil. 

      Also asked:Nov 2025 ·May 2024 ·Nov 2023

      [6]