Practice Worked Example (6.8) - Indian Standard Soil Classification System

Practise this section

9 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the formula for calculating the plasticity index?
Show hintHide hint
Think about the difference between two limits.
Question 2.
How would you classify soil with a plasticity index of 22%?
Show hintHide hint
Check the plasticity chart.
3Question 3.
What does the plasticity index measure?
- Soil consistency
- Plasticity of soil
- Soil grain size
Show hintHide hint
Think about what aspect of soil we are measuring.
4Question 4.
True or False: The liquidity index indicates whether soil is liquid, soft, or stiff.
- True
- False
Show hintHide hint
Remember how liquidity relates to soil states.
Question 5.
Given a soil with a liquid limit of 55%, plastic limit of 30%, and clay content of 80%, determine the plasticity index, liquidity index, and classify the soil.
Show hintHide hint
Use the formulas given in the example.
Question 6.
Assess a soil sample with a plasticity index of 15% and clay content of 50%. What activity classification does the soil fall into?
Show hintHide hint
Calculate using the activity formula.

5 more questions in this section. Enroll free to practise them all.