2.1. Levels and smoothens ruts

Try these first

1. 1.

   What is the primary function of an impact roller?

   Hint

   Think about what happens when a heavy object is rolled over loose soil.

2. 2.

   How does a vibrating drum contribute to soil compaction?

   Hint

   Consider what machinery is essential in road construction.

3. 3.

   The purpose of an impact roller is to:

   • Level soil
   • Break soil lumps
   • Enhance aesthetic appearance

   Hint

   Consider the mechanical actions involved.

4. 4.

   True or False: A vibrating drum is used for backfilling trenches.

   • True
   • False

   Hint

   Think about the specific applications of different equipment.

5. 5.

   A construction project requires compacting a newly backfilled trench. The soil is found to be three percent below the optimal moisture content. What are the implications for compaction and what solution would you propose?

   Hint

   Consider the relationship between moisture and soil density.

6. 6.

   You are overseeing a project where Proctor's needle readings are consistently lower than expected. How might soil texture be affecting your readings, and what adjustments could be made?

   Hint

   Think about how granular versus fine soils would behave differently.