7/28/2019 Unit 1 Ready

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7/28/2019 Unit 1 Ready

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PROBLEM TYPES

1. Calculation of Degree of Saturation of natural soil sample (Pg. No. 31 Example 2.21)

2. Calculation of Water Content, Voids Ratio, Specific Gravity & Dry Density of saturated soil(Pg. No. 36 = Problem 2)

3. Core Cutter Based Problem (Pg. No. 22 = Example 2.3)4. Compacted Soil Based Problem (Pg.No.35 = Example 2.35) & (Pg. No. 36 = Problem 3)

5. Embankment Fill up Problem (Pg.No.26 = Example 2.11) & (Pg. No. 36 = Problem 3)

6. Paraffin Wax Based Problem (Pg.No.36 = Example 2.22)

7. Relative Density Calculation Problem (Pg.No.23 = Example 2.4)

8. Calculation of Specific Gravity, Volumetric Shrinkage & Shrinkage Parameters(Pg. No. 69 = Example 3.6)

9. Calculation of Shrinkage Limit & Shrinkage Ratio (Pg.No.71 = Example 3.9)

10. Soil Comparison based on Indices (Pg. No.125 = Example 4.2)11. Soil Classification based on data (Pg. No 125 = Example 4.1)

12. Compaction Lab Test Problem (Pg. 419 = Example 17.1)

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2 MARK QUESTIONS

1. What is soil?2. What are the main stages in formation of soil?

3.

Define soil mechanics.4. Draw the soil three phase diagram for saturated, dry and partially saturated soils5. Define water content6. Define void ratio7. Define porosity8. Define specific gravity9. Define density of soil. Mention the types.10. Define soil index (or) relative density (or) density index (or) degree of density11. For what soils is relative density used? Why?

12. Mention any four soil phase inter relationships.13. Derive from fundamentals the relation between porosity and voids ratio.14. Derive from fundamentals the relation between dry and bulk density in terms of water

content.15. What are the index properties of soil?16. Mention any four methods for determination of water content.17. Mention any four methods to determine field density of soil.18. Mention any four methods to determine specific gravity of soil.19. What is particle size analysis of soils?

20. What are the stages or types of particle size analysis? Which test is not affected bytemperature?

21. What is S tokes Law? 22. What is combined sieve and sedimentation analysis?23. Define effective size in particle analysis. Give examples.24. Define Cc & Cu in mechanical analysis of soils.25. How would you classify soils based on Cu & Cc?26. Sketch typical particle size distribution curves for well graded and poorly graded soils.27. Sketch typical particle size distribution curves for uniformly graded and gap graded soils.28. If uniformity coefficient of soil is twice, the coefficient of curvature, calculate the ratio

between D 60 and D 30 29. A sieve analysis test has the results D 10 = 0.093 mm, D 30 = 0.25 mm, D 60 = 0.51 mm.

Calculate the coefficients. Is it a uniformly graded soil?30. What is consistency of soils? What are the states of consistency?31. Define liquid limit, plastic limit and shrinkage limit

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32. Define flow index, consistency index, toughness index, plasticity index and shrinkageindex

33. Differentiate between the following (a) Density & Density Index (b) Liquid Limit &Liquid Index (c) Plastic Limit & Plastic Index

34. What are the main uses of Atterberg limits?

35. What are the limitations of Atterberg limits?36. What are the various soil classification systems?37. What is the need for classification of soils?38. How is A line used to distinguish clays?39. Distinguish between GP & GW, SC & SM soils40. As per BIS system, when is dual symbols used for classification?41. Mention the limitations of BIS Classification system42. Differentiate between compaction and consolidation

43. Write a short note on compaction of soils.44. How is degree of compaction ensured in the fields?45. Indicate the various types of rollers used for various soils.46. List the factors influencing compaction of soil47. Why does dry density decrease with increasing water content when the soil is compacted

on the west side of OMC?48. What is meant by OMC (optimum moisture content)?49. Classify the soil having the following properties as per BIS : Fraction passing 75 micron

sieve : 60%, Liquid limit : 19%, Plastic limit : 14%

50. The shrinkage limit of a soil is 12%. The soil is dried from its initial water content of 8%to the dry state. Calculate the percentage of volume change in this process.