36.1.3.2 - Falling head test
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Practice Questions
Test your understanding with targeted questions
What is the main purpose of the falling head test?
💡 Hint: Think about the type of soil and what we measure.
What is one piece of equipment used in the falling head test?
💡 Hint: It's a vertical pipe used in the procedure.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of the falling head test?
💡 Hint: Consider what we need to measure in this test.
True or False: The falling head test is only applicable to coarse-grained soils like sand.
💡 Hint: Recall the types of soils we discussed in relation to the test.
2 more questions available
Challenge Problems
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Calculate the coefficient of permeability if a soil sample shows a drop in water level from 3.0 m to 1.5 m over 20 seconds. The length of the sample is 0.5 m and the cross-sectional area of the standpipe is 0.01 m². Assume the cross-sectional area of the sample is 0.02 m².
💡 Hint: Identify values for each variable in the formula to compute.
Discuss how changes in soil saturation could affect the results of a falling head test. Provide a scenario illustrating your points.
💡 Hint: Consider both the chemical nature of the soil and timing of water entry.
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