6.7. Visual Classification

Try these first

1. 1.

   What are the three main types of soil?

   Hint

   Think about the particle sizes.

2. 2.

   How does clay feel when wet?

   Hint

   Recall the properties discussed.

3. 3.

   Which of the following is NOT a type of soil based on particle size?

   • Sand
   • Silt
   • Boulder

   Hint

   Recall the three main types discussed.

4. 4.

   True or False: Clay is gritty to the touch.

   • True
   • False

   Hint

   Think about how each soil type feels.

5. 5.

   A construction engineer needs to assess a potential site with 50% sand, 40% clay, and 10% silt. Discuss the implications of these soil characteristics on building stability.

   Hint

   Consider how different soil types interact during rainfall.

6. 6.

   Given a soil with a high percentage of clay observed sticking to tools after rain, propose a soil management strategy for construction.

   Hint

   Reflect on how to manage water content in clay.