100 90 20 80 70 clay 60 50 sandy clay silty clay 40 clay loam silty clay loam 30 sandy clay loam 20 80 loam silt loam 10 Joamy sand sand sandy loam silt 20 Sand Separate, % Silt Separate, % 000 09 10 30 40 50 60 70 Clay Separate, 80 90 100

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Situation 1 – Refer to Figure.

Classify the soil according to the USDA textural classification system. The soil has particle size distribution of Gravel – 21% Silt – 35% Sand – 12% Clay – 32%

1. Calculate the modified percentage of sand

2. Compute the modified percentage of silt

3. What is the classification?

100
10
90
80
70
clay
60
50
silty
clay
sandy
clay
40
silty
clay loam
clay loam
30
sandy clay loam
20
loam
silt loam
10
sandy loam
loamy
sand sand
silt
of
30
10
Sand Separate, %
Silt Separate, %
01
08
20
70
Clay Separate, %
80
90
100
Transcribed Image Text:100 10 90 80 70 clay 60 50 silty clay sandy clay 40 silty clay loam clay loam 30 sandy clay loam 20 loam silt loam 10 sandy loam loamy sand sand silt of 30 10 Sand Separate, % Silt Separate, % 01 08 20 70 Clay Separate, % 80 90 100
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