6- For a falling-head permeability test, the following are given: • Length of soil specimen= 700 mm •Area of the soil specimen= 20 cm² Area of the standpipe= 1.05 cm² Head difference at time t = 0 is 800 mm Head difference at time t= 8 min is 500 mm a. Determine the absolute permeability of the soil. b. What is the head difference at time = 6 min? Assume that the test was conducted at 20= °C, and at 20= °C, Yw= 9.789 kN/m³ and n=1.005x10³ Ns/m². . .

6- For a falling-head permeability test, the following are given: • Length of soil specimen= 700 mm •Area of the soil specimen= 20 cm² Area of the standpipe= 1.05 cm² Head difference at time t = 0 is 800 mm Head difference at time t= 8 min is 500 mm a. Determine the absolute permeability of the soil. b. What is the head difference at time = 6 min? Assume that the test was conducted at 20= °C, and at 20= °C, Yw= 9.789 kN/m³ and n=1.005x10³ Ns/m². . .

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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In a falling head permeability test, the following data was obtained: diameter of standpipe = 1.5 cm; diameter of sample = 10.16 cm; height of water level at beginning of test (h1) = 30 cm; length of sample (L) = 20 cm. The soil had a coefficient of permeability (k) equal to 3.4 x 10°cm/sec. If the test was conducted for a period of 8 hours, what was the water level at the end of the test (h2)? %3D Time when water level is at h, is t, (t,) a = area of standpipe Time when level is at 19% h, is t2 (t2) A = cross-sectional area of soil sample Soil sample
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