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Question: 3 after a casagrande a fallinghead permeability test on a...

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3. (After A. Casagrande) A falling-head permeability test on a specimen of fine sand 12.5 cm2 in area and 10 cm long gave a k of 6.2 x 10-4 cm/s. The dry mass of the sand specimen was 195 g and ps was 2.71 Mg/m3. The test temperature was 23°C. Compute/answer: a. The coefficient of permeability of the sand in cm/s, m/s, and ftld for a void ratio of 0.67 and the standard temperature of 20°C. b. Do the result seem reasonable? Why or why not? c. What was the probable classification of the soil tested?

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