1.1. Pore Water Pressure and Measurement

Try these first

1. 1.

   Define permeability in your own words.

   Hint

   Think about the flow of water in different types of soil.

2. 2.

   What does pore water pressure measure?

   Hint

   Consider how water sits within the soil.

3. 3.

   What is permeability?

   • A measure of water flow through soil
   • A type of soil
   • A soil treatment process

   Hint

   Remember the role of permeability in fluid movement.

4. 4.

   True or False: Darcy's Law is applicable only to saturated soils.

   • True
   • False

   Hint

   Think about conditions affecting soil properties.

5. 5.

   Calculate the permeability of a soil sample with an effective grain size of 0.2 cm using Hazen's empirical formula.

   Hint

   Substitute the effective grain size correctly into the formula.

6. 6.

   You have a soil profile consisting of gravel, sand, silt, and clay. Describe how you would approach measuring and comparing the permeability of each layer.

   Hint

   Consider Hazen's formula for coarse soils and log relationships for finer soils.