1.2. Porosity (n)

Try these first

1. 1.

   Define porosity.

   Hint

   Think about what voids and total volume mean.

2. 2.

   What does a high void ratio indicate?

   Hint

   Focus on what the void ratio represents.

3. 3.

   What is the formula for porosity?

   • Volume of Voids / Total Volume
   • Volume of Solids / Volume of Voids
   • Water Content / Solid Volume

   Hint

   Focus on what porosity represents.

4. 4.

   True or False: A higher percentage of air content indicates a drier soil.

   • True
   • False

   Hint

   Think about how air replaces water in the voids.

5. 5.

   A soil sample has a total volume of 2m³ with a void volume of 0.8m³. Calculate the porosity and void ratio.

   Hint

   Apply the definitions carefully.

6. 6.

   Consider a soil that is 70% saturated and has a void ratio of 0.5. If the total volume is 1m³, find the volume of water in the soil.

   Hint

   Use the degree of saturation in your calculations.