A sample of soil was tested in the laboratory, and the test results were listed as shown in the table. The liquid limit of the soil was found to be 46.2% and the plastic limit was found to be 21.9%. U.S. Sieve Size 1 in. 3/4 in. 3/8 in. No. 4 No. 10 No. 40 No. 200 Percent Passing 100 100 100 100 85.6 72.3 58.8 Required: Classify the soil by the AASHTO system. Do not include a space between the classification and group index.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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soil course

A sample of soil was tested in the laboratory, and the test results were listed as
shown in the table. The liquid limit of the soil was found to be 46.2% and the plastic
limit was found to be 21.9%.
U.S. Sieve Size
1 in.
3/4 in.
3/8 in.
No. 4
No. 10
No. 40
No. 200
Percent Passing
100
100
100
100
85.6
72.3
58.8
Required:
Classify the soil by the AASHTO system. Do not include a space between the
classification and group index.
Transcribed Image Text:A sample of soil was tested in the laboratory, and the test results were listed as shown in the table. The liquid limit of the soil was found to be 46.2% and the plastic limit was found to be 21.9%. U.S. Sieve Size 1 in. 3/4 in. 3/8 in. No. 4 No. 10 No. 40 No. 200 Percent Passing 100 100 100 100 85.6 72.3 58.8 Required: Classify the soil by the AASHTO system. Do not include a space between the classification and group index.
Expert Solution
Step 1

As percent passing No. 200 (58.8%)is more than 36%, the soil is either A4,A5,A6 or A7 depending on liquid limit and plasticity index.

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