The following data are for a falling-head permeability test: • Length of the soil sample = 500 mm Area of the soil sample = 1600 mm2 Area of the standpipe = 97 mm² At time t = 0, head difference = 410 mm - At time t 10 min, head difference = 185 mm f the test was conducted at 20°C at which ywater = 9.789 kN/m³ and n : 1.005x10-3 N * s/m2, a. Determine the absolute permeability of soil (cm/sec) . What was the head difference at t = 7 min ? (cm)

The following data are for a falling-head permeability test: • Length of the soil sample = 500 mm Area of the soil sample = 1600 mm2 Area of the standpipe = 97 mm² At time t = 0, head difference = 410 mm - At time t 10 min, head difference = 185 mm f the test was conducted at 20°C at which ywater = 9.789 kN/m³ and n : 1.005x10-3 N * s/m2, a. Determine the absolute permeability of soil (cm/sec) . What was the head difference at t = 7 min ? (cm)

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Prob. A falling head permeability test was performed on a sample of silty sand. The time required for the head to fall in the standpipe from the 60 cm to 30 cm mark was 70 minutes. The sectional area of the standpipe was 1.25 cm?. If the height and diameter of the sample were respectively 100 mm and 90 mm, determine the value of K.
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