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The classification of soil based on United States department of agriculture textural classification chart.
Answer to Problem 5.1P
The classification of soil A as per the United States department of agriculture textural classification chart is
The classification of soil B as per the United States department of agriculture textural classification chart is
The classification of soil C as per the United States department of agriculture textural classification chart is
The classification of soil D as per the United States department of agriculture textural classification chart is
The classification of soil E as per the United States department of agriculture textural classification chart is
The classification of soil F as per the United States department of agriculture textural classification chart is
The classification of soil G as per the United States department of agriculture textural classification chart is
The classification of soil H as per the United States department of agriculture textural classification chart is
The classification of soil I as per the United States department of agriculture textural classification chart is
The classification of soil J as per the United States department of agriculture textural classification chart is
Explanation of Solution
Calculation:
Consider soil A:
Refer Figure (5.1) “U.S. Department of agriculture textural classification (USDA)”
in the text book.
Mark the percentage of sand for soil A as 20 %, percentage of silt as 20 %, and percentage of clay as 60 % in Figure (5.1) and mark the point of intersection of three lines.
Show the percentage of sand, silt, and clay of soil A as in Figure (1).
Refer Figure (1).
Hence, the classification of soil A as per the United States department of agriculture textural classification chart is
Consider soil B:
Mark the percentage of sand for soil B as 55 %, percentage of silt as 5 %, and percentage of clay as 40 % in Figure (5.1) and mark the point of intersection of three lines.
Show the percentage of sand, silt, and clay of soil B as in Figure (2).
Refer Figure (2).
Thus, classification of soil B as per the United States department of agriculture textural classification chart is
Consider soil C:
Mark the percentage of sand for soil C as 45 %, percentage of silt as 35 %, and percentage of clay as 20 % in Figure (5.1) and mark the point of intersection of three lines.
Show the percentage of sand, silt, and clay of soil C as in Figure (3).
Refer Figure (3).
The classification of soil C as per the United States department of agriculture textural classification chart is
Consider soil D:
Mark the percentage of sand for soil D as 50 %, percentage of silt as 15 %, and percentage of clay as 35 % in Figure (5.1) and mark the point of intersection of three lines.
Show the percentage of sand, silt, and clay of soil D as in Figure (4).
Refer Figure (4).
The classification of soil D as per the United States department of agriculture textural classification chart is
Consider soil E:
Mark the percentage of sand for soil E as 70 %, percentage of silt as 15 %, and percentage of clay as 15 % in Figure (5.1) and mark the point of intersection of three lines.
Show the percentage of sand, silt, and clay of soil E as in Figure (5).
Refer Figure (5).
The classification of soil E as per the United States department of agriculture textural classification chart is
Consider soil F:
Refer Figure (5.1) “U.S. Department of agriculture textural classification (USDA)”
in the text book.
Mark the percentage of sand for soil F as 30 %, percentage of silt as 58 %, and percentage of clay as 12 % in Figure (5.1) and mark the point of intersection of three lines.
Show the percentage of sand, silt, and clay of soil F as in Figure (6).
Refer Figure (6).
Hence, the classification of soil F as per the United States department of agriculture textural classification chart is
Consider soil G:
Mark the percentage of sand for soil G as 40 %, percentage of silt as 25 %, and percentage of clay as 35 % in Figure (5.1) and mark the point of intersection of three lines.
Show the percentage of sand, silt, and clay of soil G as in Figure (7).
Refer Figure (7).
Thus, classification of soil G as per the United States department of agriculture textural classification chart is
Consider soil H:
Mark the percentage of sand for soil H as 30 %, percentage of silt as 25 %, and percentage of clay as 45 % in Figure (5.1) and mark the point of intersection of three lines.
Show the percentage of sand, silt, and clay of soil H as in Figure (8).
Refer Figure (8).
The classification of soil H as per the United States department of agriculture textural classification chart is
Consider soil I:
Mark the percentage of sand for soil I as 5 %, percentage of silt as 45 %, and percentage of clay as 50 % in Figure (5.1) and mark the point of intersection of three lines.
Show the percentage of sand, silt, and clay of soil I as in Figure (9).
Refer Figure (9).
The classification of soil I as per the United States department of agriculture textural classification chart is
Consider soil J:
Mark the percentage of sand for soil J as 45 %, percentage of silt as 45 %, and percentage of clay as 10 % in Figure (5.1) and mark the point of intersection of three lines.
Show the percentage of sand, silt, and clay of soil J as in Figure (10).
Refer Figure (10).
The classification of soil J as per the United States department of agriculture textural classification chart is
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Chapter 5 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
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