1. The data in the table below were obtained for the determination of coefficient of permeability by Falling Head Permeability Test Test No. 1 Diameter of Specimen, D (cm) 6.35 6.35 6.35 Length of Specimen, L (cm) 13.2 13.2 13.2 Area of Specimen, A (cm²) 31.67 31.67 31.67 Beginning head difference, h1(cm) 86 77 66 Ending head difference, h2 (cm) 25 22 22 Test duration (s) 16 16 15.5 Temperature °C 26 26 26 2.303VW h1 k = (h1-h2)tA' (cm/s) h2 Ave. k = KT°C K20°C= n20°C a. Calculate the coefficient of permeability in each test b. Calculate the average k nT°C c. Calculate the corrected k20°C = K20°C- n20°C

1. The data in the table below were obtained for the determination of coefficient of permeability by Falling Head Permeability Test Test No. 1 Diameter of Specimen, D (cm) 6.35 6.35 6.35 Length of Specimen, L (cm) 13.2 13.2 13.2 Area of Specimen, A (cm²) 31.67 31.67 31.67 Beginning head difference, h1(cm) 86 77 66 Ending head difference, h2 (cm) 25 22 22 Test duration (s) 16 16 15.5 Temperature °C 26 26 26 2.303VW h1 k = (h1-h2)tA' (cm/s) h2 Ave. k = KT°C K20°C= n20°C a. Calculate the coefficient of permeability in each test b. Calculate the average k nT°C c. Calculate the corrected k20°C = K20°C- n20°C

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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Concept explainers

Laboratory Determination of Hydraulic Conductivity

Hydraulic conductivity is the measure of flowability of water inside the soil in the presence of a hydraulic gradient. The hydraulic gradient is defined as the difference in the water heads in the soil, which induces a water motion. In simple terms, a hydraulic gradient is the presence of a potential that induces a flow of water.

Question

1. The data in the table below were obtained for the determination of coefficient of permeability
by Falling Head Permeability Test
Test No.
1
2
3
Diameter of Specimen, D (cm)
6.35
6.35
6.35
Length of Specimen, L (cm)
13.2
13.2
13.2
Area of Specimen, A (cm²)
31.67
31.67
31.67
Beginning head difference, h1(cm)
86
77
66
Ending head difference, h2 (cm)
25
22
22
Test duration (s)
16
16
15.5
Temperature °C
26
26
26
h1
2.303VW
log
(h1-h2)tA'
k =
(cm/s)
h2'
Ave. k =
KT°C
К20°С%3D
n20°C
a. Calculate the coefficient of permeability in each test
b. Calculate the average k
nT°C
c. Calculate the corrected k20°C = K20°C-
n20°C

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