For a constant laboratory permeability test on a fine sand, the following data are given: Length of specimen: 16 cm. Diameter of specimen: 96 mm. Constant head difference: 50 cm. Volume of water collected in 4 min.: 420 cc Void ratio of the soil specimen: 0.55 Determine the hydraulic conductivity of soil in m/min.

For a constant laboratory permeability test on a fine sand, the following data are given: Length of specimen: 16 cm. Diameter of specimen: 96 mm. Constant head difference: 50 cm. Volume of water collected in 4 min.: 420 cc Void ratio of the soil specimen: 0.55 Determine the hydraulic conductivity of soil in m/min.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter6: Hydraulic Conductivity

Section: Chapter Questions

Problem 6.7P

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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

For a constant laboratory permeability test on a fine sand, the following data are given:

Length of specimen: 16 cm.

Diameter of specimen: 96 mm.

Constant head difference: 50 cm.

Volume of water collected in 4 min.: 420 cc

Void ratio of the soil specimen: 0.55

Determine the hydraulic conductivity of soil in m/min.

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2. Situation 2 - For a constant laboratory permeability test on a fine sand, the following data are given: Length of specimen = 16 cm Diameter of specimen = 96 mm Constant Head Difference = 50 cm Volume of water collected in 4 min = 420 cc Void ratio of the soil specimen = 0.55 a. Determine the hydraulic conductivity of the soil in m/min. Round off to four decimal places. b. Determine the discharge velocity in m/min. Round off to four decimal places. c. Determine the seepage velocity in m/min. Round off to four decimal places.
1. For a constant head laboratory permeability test on a fine sand, the following values are given: Length of specimen, L = 10 inches Diameter of specimen = 2.5 inches Head difference, h = 22 inches Water collected in 2 minutes = 0.044 in %3D Soil specimen The void ratio of the specimen is 0.34. Determine the conductivity, k, of the soil in in/min. b. Ps ne a. Determine the discharge velocity through the soil in in/min. Determine the seepage velocity in in/min. Measuring hurket C.
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For a constant head laborátory permeability test on a fine sand, the tollowinK values are given: (Refer to Figure Figure 03.13) Length of specimen,L= 10 inches Diameter of specimen = 2.5 inches Head difference, h = 22 inches Water collęcted in 2 min = 0.044 in' l'he void ratio of the specimen is 0.34. a) Determine the conductivity, k, of the soil in in/min. b) Determine the discharge velocity through the soil in in/min e) Determine the seepage velocity in in/min. %3D Porous stone t Soil specimen Porous stone Graduated flask
P3 . 1. Please give the solution and the correct answer.
The results of a constant-head permeability test for a fine sand sample having a diameter of 150 mm and a length of 300mm are as follows; Constant Head Difference = 500mm Time of Collection of Water = 5 min. Volume of Water Collected = 350cm³ Temperature of Water = 25°C Find the hydraulic conductivity for the soil at 20°C
Problem 7.6
PROBLEM B For a constant head laboratory test on a fine sand, the following are the given values: • Length of the specimen • Di ameter of the specimen 14.00 cm 7.60 cm Head difference 42.00 cm Water collected in 3.50 mins 395 cu.cm Void ratio 0.40 A. Compute for the hydraulic conductivity of the soil in cm/sec. B. Determine the discharge velocity through the soil in cm/sec. c. Determine the seepage velocity in cm/sec.
PART IV: PERMEABILIT Y PROBLEM A For a constant head laboratory test on a fine sand, the following are the given values : • Length of the specimen • Di ameter of the specimen 14.0 inches 3.25 inches He ad difference 25.0 inches Water collected in 2.50 mins Void ratio A. Compute for the hydraulic conductivity of the soil in in/sec. B. Determine the discharge velocity through the soil in in/sec. c. Determine the seepage velocity in in/sec. 0.065 cubic inches 0.45
In a constant head permeability test in the laboratory as shown in Figure Q2(e), the data is recorded in Table Q2(b). The void ratio of the soil specimen is 0.46. Determine; (i) Hydraulic conductivity, k, of the soil in cm/sec. (ii) Discharge velocity in cm/sec.
Problem 7.17
For a decreasing load permeability test, the following are given values: - Sample length: 200 mm - Soil sample area: 1000 mm² - Piezometer area: 40 mm² - Load difference at instant t = 0: 500 mm - Load difference at instant t = 180 s: 300 mm Determine the hydraulic conductivity of the soil in cm/s.