1.1. Plotting the Dial Reading

Try these first

1. 1.

   What does plotting dial readings help us determine?

   Hint

   Think about how time affects measurements.

2. 2.

   What is the purpose of drawing a tangent line?

   Hint

   Remember, a tangent line touches but does not cross the curve.

3. 3.

   What is the primary purpose of plotting dial readings?

   • To visualize consolidation
   • To measure soil density
   • To calculate soil moisture

   Hint

   Remember the relationship between time and consolidation.

4. 4.

   True or False: A tangent line can intersect the curve at multiple points.

   • True
   • False

   Hint

   Reflect on the definition of a tangent.

5. 5.

   If soil consolidation data indicates a dial reading progression from 1.0 mm to 2.2 mm over a time interval of 36 minutes, how would you derive the change in consolidation rate? Illustrate it on a square-root time plot.

   Hint

   Focus on the differences between readings and analyze the square-root values.

6. 6.

   Given a scenario where a soil deposit is 1 meter thick, and the laboratory results suggest 10 days for full consolidation at a specific loading condition, create a model predicting the time under field conditions using the dial reading technique discussed.

   Hint

   Consider how field conditions differ from laboratory scenarios.