In a falling head permeameter test on a fine sand the sample had a diameter of 76 mm and a length of 152 mm with a stand pipe of 12.7 mm diameter. A stopwatch was started when h was 508 mm and read 19.6s when h was 254 mm; the test was repeated for a drop from 254 mm to 127 mm and the time was 19.4s. Determine an average value for k in m/s.
In a falling head permeameter test on a fine sand the sample had a diameter of 76 mm and a length of 152 mm with a stand pipe of 12.7 mm diameter. A stopwatch was started when h was 508 mm and read 19.6s when h was 254 mm; the test was repeated for a drop from 254 mm to 127 mm and the time was 19.4s. Determine an average value for k in m/s.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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In a falling head permeameter test on a fine sand the sample had a diameter of
76 mm and a length of 152mm with a stand pipe of 12.7 mm diameter. A stopwatch
was started when h was 508 mm and read 19.6s when h was 254 mm; the test was
repeated for a drop from 254mm to 127 mm and the time was 19.4s.
Determine an average value for k in m/s.
Answer 1.5 x 10m/s
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