2.2. Soil Texture and Gradation

Try these first

1. 1.

   What is soil texture?

   Hint

   Think about the different sizes of particles in the soil.

2. 2.

   Name one method used to analyze particle size distribution.

   Hint

   One method is for larger particles, while the other is for smaller ones.

3. 3.

   What method is used for particle analysis larger than 75 µm?

   • Hydrometer Analysis
   • Sieve Analysis
   • Sedimentation Analysis

   Hint

   Consider the tools used in a lab for separating soil.

4. 4.

   True or False: Well-graded soils are beneficial because they compact well.

   • True
   • False

   Hint

   Remember the definitions of well-graded soils.

5. 5.

   A field engineer collects a soil sample to analyze its structure. What steps should the engineer take to perform sieve and hydrometer analysis? Discuss in detail.

   Hint

   Think about the order of operations and equipment you would need.

6. 6.

   If a certain soil sample is found to be poorly graded, what approaches can be taken to improve its compaction characteristics for construction purposes?

   Hint

   Consider how materials interact and modify one another.