Geotechnical Engineering SPPU Endsem Question Paper May 2025
All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.
- Subject code
- 201008
- Pattern
- 2019 pattern
- Exam
- Endsem
- Session
- May 2025
- Max. marks
- 70
- Time
- 2½ Hours
- Semester
- IV
- Paper code
- [6402]-6
Printed for: S.E. (Civil Engg.)
Instructions to the candidates
- Answer Q.l or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8.
- Neat diagrams must be drawn whenever necessary.
- Figures to the right indicate full marks.
- Assume suitable data, if necessary and mention it clearly.
- Use of non-programmable calculator is allowed.
Questions
Q1
- a)[5]
Describe the effect of compaction on properties of soil.
Also asked:Nov 2024
- b)[6]
Explain how compaction control is achieved in the field using a proctor needle.
- c)[6]
What is pressure bulb? Explain its significance and draw a neat sketch of pressure bulb for concentrated point load.
Also asked:Nov 2025
OR- a)
Q2
- a)[6]
Explain Boussinesq’s theory with neat sketch. State its Assumptions and formula for stress in soil by point load, with description of each term.
- b)[5]
Differentiate between Light Compaction & Heavy Compaction test.
- c)[6]
A load of 1000 kN acts as a point load at the surface of a soil mass. Estimate the stress at a point 3m below and 4m away from the point of action of the load by Boussinesq’s formula. Compare the value with the result from Westergaards’s theory.
- a)
Q3
- a)[5]
Explain how shear tests are conducted with different drainage conditions?
- b)[6]
Explain vane shear test procedure with a neat sketch and formula.
- c)[6]
Define total and effective stress. Determine the shear strength in terms of effective stress on a plane within a saturated soil mass at a point where the total normal stress is 200 KN/m 2 and the pore water pressure is 80 KN/m 2 . The effective stress shear strength parameters for the soil are c ' = 16 KN/m 2 and = 39°. 2
OR- a)
Q4
- a)[6]
A sample of dry cohesionless soil was tested in a triaxial machine. If the angle of internal shearing resistance was 36° & the confining pressure 100kN/m 2 , determine the deviator stress at which the sample failed.
- b)[5]
Describe the procedure for Direct Shear Test.
- c)[6]
Explain briefly the procedure of conducting Unconfined Compression Test on Clayey soil sample. Draw Mohr’s circle for the test.
- a)
Q5
- a)[6]
Explain Rebhann’s graphical method for determination of earth pressure on retaining wall.
- b)[6]
Derive the expression for active state of pressure at any point for dry cohesionless backfill with uniform surcharge.
- c)[6]
This part has equations that don’t show as text. Open the PDF to read it.
OR- a)
Q6
- a)[6]
Determine the relation for lateral earth pressure in active state for submerged cohesionless backfill.
- b)[6]
Discuss Culmann’s graphical method for the determination of active earth pressure.
- c)[6]
In a cohesionless soil deposit having unit weight of 15 kN/m 3 and angle of internal friction of 30°. Determine the active and passive lateral pressure intensities at depth of 10 m.
- a)
Q7
- a)[6]
Discuss “Taylor’s Stability Number” for stability analysis of finite slope.
Also asked:Nov 2024
- b)[6]
This part has equations that don’t show as text. Open the PDF to read it.
- c)[6]
OR- a)
Q8
- a)[6]
Derive the expression for factor of safety for dry infinite slope in sandy soil.
Also asked:Nov 2023
- b)[6]
Explain with neat sketch different modes of slope failure.
- c)[6]
This part has equations that don’t show as text. Open the PDF to read it.
- a)