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Consider the following statements: 1. Dynamic cone penetration test for site investigation is based on the principle that elastic shock waves travel in different materials at different velocities. 2. Electrical resistivity method of subsurface investigation is capable of detecting only the strata having different electrical resistivity. 3. In-situ vane shear test is useful for determining the shear strength of very soft soil and sensitive clays and is unsuitable for sandy soil. Which of these statements is/are correct?

Consider the following statements: 1. Dynamic cone penetration test for site investigation is based on the principle that elastic shock waves travel in different materials at different velocities. 2. Electrical resistivity method of subsurface investigation is capable of detecting only the strata having different electrical resistivity. 3. In-situ vane shear test is useful for determining the shear strength of very soft soil and sensitive clays and is unsuitable for sandy soil. Which of these statements is/are correct? Correct Answer 2 and 3

Explanation:

Different types of tests and their purposes conducted on the soil as follows:

Test

Purpose

Plate load test/ Pile load test
  • Determine the settlement in soil
  • Bearing Capacity of soil
  • Modulus of subgrade reaction

Cyclic Load Test
  • Skin Friction
  • Point Bearing Resistance

Dynamic cone penetration Test
  • The dynamic cone penetration test is a method of geotechnical investigation that gives a measure of the in-situ resistance of soil to penetration.
  • This method can help determine the strength of in-situ soil and the depth and thickness of sub-surface soil layers. 

Pressure meter test
  • To find the stress-strain relationship of soil in a borehole.
  • Elastic constants of soil

Standard and modified proctor test
  • To find the maximum dry density of soil along with the optimum moisture content and amount of compaction

Direct Shear Test
  • Find the maximum shear strength of a cohesionless soil

Triaxial Test
  • Find the maximum shear strength of cohesionless soil in a field like situation

Vane Shear Test
  • Undrained shear strength of soft sensitive clays
Electric Resistivity method
  • It is a method of subsurface investigation that is capable of detecting only the strata having different electrical resistivity.

Related Questions

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The Proper sequence should be:
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