3.2. Lift thickness

Try these first

1. 1.

   What is lift thickness?

   Hint

   Think about how deep the soil is during compaction.

2. 2.

   How does the weight of the roller affect the lift thickness?

   Hint

   What happens when you use a heavier roller?

3. 3.

   What does lift thickness refer to?

   • The density of soil
   • The depth of compacted soil
   • The weight of the roller

   Hint

   It's about how deep the soil is compacted at once.

4. 4.

   Is it better to have thicker lifts when compacting sandy soil?

   • True
   • False

   Hint

   Consider soil types and compaction efficiency.

5. 5.

   A construction site needs to compact gravel with a lift thickness of 10 inches using a heavy roller. If the roller weighs 1500 lbs, explain how the weight affects the number of passes needed and potential adjustments if soil moisture is high.

   Hint

   Consider the compaction guidelines for your soil type.

6. 6.

   Design a compaction strategy for a clay surface with varying water content. How would you adjust lift thickness depending on moisture changes?

   Hint

   What properties do clay and moisture interact with during compaction?