1.4. Permeability of Different Soils

Try these first

1. 1.

   What does the coefficient of permeability (k) measure?

   Hint

   Think about what water does when it interacts with soil.

2. 2.

   Name one factor that can influence soil permeability.

   Hint

   Consider the characteristics of the soil.

3. 3.

   Which type of soil has the highest permeability?

   • Clay
   • Sand
   • Gravel

   Hint

   Think about the sizes of the particles.

4. 4.

   True or False: Permeability is only dependent on the size of soil particles.

   • True
   • False

   Hint

   Consider other factors that can influence flow.

5. 5.

   You have two soil types: sand with a permeability of 0.1 cm/sec and clay with a permeability of 10^-8 cm/sec. If both are placed in an aquifer, calculate the effective flow rate assuming equal hydraulic gradient.

   Hint

   Consider how permeability affects flow differences.

6. 6.

   You have a mixture of soil with 70% sand and 30% clay. Discuss how the overall permeability will compare to pure sand and pure clay.

   Hint

   Think about how the combination of particles affects flow.