Geotechnical Engineering
– I
Important Theory
Questions & Problems
UNIT-I
1.
Write
a note Clay Minerals with illustration on the Physical Structure.
2.
Derive
the following relations
a.
e=wG/s
b.
Expression
for Bulk density
c.
Dry
unit weight
d.
e=(n)/(1-n)
e.
Exp
for Saturated Unit weight
3.
Problems
on Phase relations
4.
Method
of finding field density using core cutter and sand replacemwent.
5.
Method
of finding Gs
6.
Method
of finsing water content from Oven drying and Pycnometer method.
UNIT-II
7.
Describe
the method of conducting Grain size analysis for coarse grain soils
8.
Describe
the method of hydrometer analysis for fine grain soils.
9.
Describe
the method of arriving at liquid limit and plastic limit using Casagrande’s
Method.
10. Write a note on classification of
soils as per IS code method.
11. Explain the significance of Casagrande’s
Plasticity Chart for IS soil classification.
12. Problems on finding Cc, Cu,
soil classification using the Plasticity chart
13. Problems on Stoke’s Law &
hydroemeter analysis.
UNIT - III
14. Write a note on Factors affecting permeability
of soils.
15. Explain the Method of determination of
coefficient of permeability using Constant head method.
16. Explain the Method of determination of
coefficient of permeability using Falling head method.
17. Problems on Layered soils
determination of Kh and Kv
18. Problems on Pumping out tests
19. Problems on finding k from test data
of Constant head and variable head methods.
UNIT - IV
20. Explain Terzhaghi’s effective stress
principle.
21. What is Quick Sand?
22. What is critical Hydraulic gradient?
23. Describe the characteristics of
Flownets.
24. Problems on Total, Neutral and effective
stress diagrams.
UNIT - V
25. Explain the assumptions involved in
Boussenesq’s theory to compute the vertical stress.
26. Explain the different types of stress
diagrams that can be plotted in soil engineering.
27. Explain the method of construction of
Newmark’s Influence Chart.
28. Problems on vertical stress for pojnt
load and line load.
29. Problems on Isobars for point loads.
UNIT - VII
30. Explain the mechanism of compaction
and factors effecting compaction.
31. Write a note field compaction control.
32. Explain the Proctor’s Test for finding
OMC and maximum dry unit weight.
33. Problems on finding OMC, maximum dry
unit weight, relative compaction from Graphs.
34. Problems on finding coordinates on
ZAV, 95% saturation line etc.
UNIT – VIII
35. Explain the Method of conducting Triaxial
Tests to find c and phi.
36. Write a note on different drainage
tests on soils.
37. Problems on Mohr’s circles to fing
Principal stresses.
38. Problems for finding c and phi from
triaxial test data.
39. Write a note on shear strength of
clays.
