3.2.4. Layer Thickness

Try these first

1. 1.

   What is the ideal layer thickness for effective soil compaction?

   Hint

   Think about how thick layers can be compacted effectively.

2. 2.

   Why do granular soils allow for thicker layers than cohesive soils?

   Hint

   Consider the properties of granular vs cohesive soils.

3. 3.

   What is the optimal layer thickness for effective soil compaction?

   • 1-2 inches
   • 6-12 inches
   • 24 inches

   Hint

   Recall the effective range discussed in class.

4. 4.

   True or False: Thicker layers are always better for soil compaction.

   • True
   • False

   Hint

   Think about the efficiency of compaction with layer thickness.

5. 5.

   You have to compact a layer of clay soil for a new road. Discuss what considerations you need to make regarding layer thickness, equipment choice, and potential issues.

   Hint

   Consider the properties of clay in your answer.

6. 6.

   You're constructing a foundation on granular soil and facing settlement issues. Explain how you would evaluate layer thickness and compaction techniques.

   Hint

   Think about the characteristics of granular soils.