3. A settling tank has an overflow rate of 100,000 gal/ft²-d. Water carrying sediment of various sizes enters the tank. The sediment has the following distribution of settling velocities. Settling velocity (ft/min) 10.0 5.0 2.0 1.0 Mass fraction remaining 0.54 0.45 0.35 0.20 0.10 0.03 0.75 0.50 What is the gravimetric percentage of sediment particles completely removed? (A) 32% (B) 39% (C) 47% (D) 55%
3. A settling tank has an overflow rate of 100,000 gal/ft²-d. Water carrying sediment of various sizes enters the tank. The sediment has the following distribution of settling velocities. Settling velocity (ft/min) 10.0 5.0 2.0 1.0 Mass fraction remaining 0.54 0.45 0.35 0.20 0.10 0.03 0.75 0.50 What is the gravimetric percentage of sediment particles completely removed? (A) 32% (B) 39% (C) 47% (D) 55%
Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter8: Stresses In A Soil Mass
Section: Chapter Questions
Problem 8.14P
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Transcribed Image Text:3. A settling tank has an overflow rate of 100,000 gal/ft²-d. Water carrying
sediment of various sizes enters the tank. The sediment has the following
distribution of settling velocities.
Settling velocity (ft/min)
10.0
5.0
2.0
1.0
Mass fraction remaining
0.54
0.45
0.35
0.20
0.10
0.03
0.75
0.50
What is the gravimetric percentage of sediment particles completely removed?
(A) 32%
(B) 39%
(C) 47%
(D) 55%
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