Practice Pore Water Pressure (1.2) - Stresses in the Ground - Geotechnical Engineering

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 pore water pressure?
Show hintHide hint
Think about how water fills spaces in soil.
Question 2.
What happens to pore water pressure at the water table?
Show hintHide hint
Remember how pressures equalize at that point.
3Question 3.
What is the formula for pore water pressure under hydrostatic conditions?
Show hintHide hint
Think about how pressure varies with water depth.
4Question 4.
Is pore water pressure negative above the water table?
- True
- False
Show hintHide hint
Consider how water is held in soil pores.
Question 5.
A soil layer is saturated and has a unit weight of water of 9.81 kN/m³. If the groundwater level is at 5m, calculate the pore water pressure at a depth of 12m.
Show hintHide hint
Remember to subtract the depth from the groundwater level.
Question 6.
Describe what happens to pore water pressure when a heavy load is applied to saturated soil and predict how effective stress will change.
Show hintHide hint
Think about how water adjusts to stress changes and how this affects strength.

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