4. A laboratory analysis of the settlement of flocculated water gave the following results for a sample taken at a depth of 2 meters of a settling column. Sampling Time (min) 0.7 1.2 2.3 4.6 6.3 8.8 Proportion of particles in the sample 0.6 0.5 0.35 0.15 0.08 0.04 For a settling basin with an overflow rate of 0.03 m/s, determine, for the particles that will be completely removed irrespective of the level at which they enter the basin, Proportion of particles (i) (ii) Smallest size

4. A laboratory analysis of the settlement of flocculated water gave the following results for a sample taken at a depth of 2 meters of a settling column. Sampling Time (min) 0.7 1.2 2.3 4.6 6.3 8.8 Proportion of particles in the sample 0.6 0.5 0.35 0.15 0.08 0.04 For a settling basin with an overflow rate of 0.03 m/s, determine, for the particles that will be completely removed irrespective of the level at which they enter the basin, Proportion of particles (i) (ii) Smallest size

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

4. A laboratory analysis of the settlement of flocculated water gave the following results
for a sample taken at a depth of 2 meters of a settling column.
Sampling Time (min)
0.7
1.2
2.3
4.6
6.3
8.8
Proportion of particles
in the sample
0.6
0.5
0.35
0.15
0.08
0.04
For a settling basin with an overflow rate of 0.03 m/s, determine, for the particles that
will be completely removed irrespective of the level at which they enter the basin,
(i)
Proportion of particles
(ii)
Smallest size
You may assume the settling is governed by Stocks law given below where
p is 1.01x10-3 kg/ms and ps = 2650 kg/m3 and pi = 1000 kg/m³.
Vs =
18µ

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