1. What is the difference between the Constant Head and Falling Head Permeability Test? 2. What...

1. What is the difference between the Constant Head and Falling Head Permeability Test?

2. What principal are the two permeability tests based on?

3. Why would one use the falling head tests instead of the constant head test?

4. If you anticipate that the permeability of a soil is approximately 0.000001 cm/sec and the falling head permeability testing equipment had the following dimensions, how long should the test take if the beginning head is 20 cm and the final head is 15 cm? Diameter of the stand pipe with area (a) is 1 cm. Diameter of the soil specimen with an area (A) is 6 cm. The length of the soil specimen is 15 cm.

5. If the coefficient in Hazen’s equation is 1 compute the D10 of the soil having a permeability of 0.001 cm/sec.

Expert Solution

Ally Wells answered 11 months ago

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