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Engineering

Civil Engineering

Graduated flask Porous stone Soil specimen

Construction Materials, Methods and Techniques (MindTap Course List)

4th Edition

ISBN:9781305086272

Author:William P. Spence, Eva Kultermann

Publisher:William P. Spence, Eva Kultermann

Chapter28: Glass

Section: Chapter Questions

Problem 9RQ

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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 head laboratory permeability test on a fine sand, the following values are given: Length of specimen, L:6.75 in Diameter of specimen: 4 in Head difference,h: 23 in Water collected in 6 mins: 0.917in³ Void Ratio:0.23 Find the seepage velocity (Vs) in in/min

Graduated flask
Porous stone
Soil specimen

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