2. Plot the particle size distribution curve of the soil between P% as Y-axis and particle size (opening size) (mm) as X-axis on a logarithmic scale.

Structural Analysis
6th Edition
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Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Soil lab Particle size distribution (Sieve method) In addition to that, calculate the value of D25 and D75 and calculate it in curvature
2. Plot the particle size distribution curve of the soil between P% as Y-axis and particle size (opening
size) (mm) as X-axis on a logarithmic scale.
Particle Size (mm)
100
10
0.1
0.01
100
90
80
70
40
30
20
10
3. From the curve, find the following:
Coefficient of Uniformity (Cu) = D60 / D10
Coefficient of Curvature (C.) = D30 / D10 D60
Passing %
Transcribed Image Text:2. Plot the particle size distribution curve of the soil between P% as Y-axis and particle size (opening size) (mm) as X-axis on a logarithmic scale. Particle Size (mm) 100 10 0.1 0.01 100 90 80 70 40 30 20 10 3. From the curve, find the following: Coefficient of Uniformity (Cu) = D60 / D10 Coefficient of Curvature (C.) = D30 / D10 D60 Passing %
Opening
Size
Wt. of
empty
sieve (S)
Wt. of Sieve
+ wt. of soil
(S»)
Wt. of soil
Retained %
Cumulative
retained %
Finer
Sieve
(S2- S1)*
100/W
retained
(passing)=
No.
(mm)
(S2-S1)
(C)
100-C
9.5
988
25
1622.9
1801.9
179
17.9
4.75
1586.5
1770.6
184.1
18.41
2.36
1442.1
1657.4
215.3
21.53
0.3
1110.4
1496.6
386.2
38.62
200
828.9
843.8
14.9
1.49
PAN
551.8
570.2
18.4
1.84
Transcribed Image Text:Opening Size Wt. of empty sieve (S) Wt. of Sieve + wt. of soil (S») Wt. of soil Retained % Cumulative retained % Finer Sieve (S2- S1)* 100/W retained (passing)= No. (mm) (S2-S1) (C) 100-C 9.5 988 25 1622.9 1801.9 179 17.9 4.75 1586.5 1770.6 184.1 18.41 2.36 1442.1 1657.4 215.3 21.53 0.3 1110.4 1496.6 386.2 38.62 200 828.9 843.8 14.9 1.49 PAN 551.8 570.2 18.4 1.84
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