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The laboratory test results of a soil sample are given below:
Percentage finer than 4.75 mm = 60
Percentage finer than 0.075 mm = 30
Liquid Limit = 35%
Plastic Limit = 27%
The soil classification is
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- GM
- SM
- GC
- ML-MI
Correct Option: B
Since more than 50% (60%) pass through 4.75 mm it is not gravel and sieve len them 50% (30%) pan through 0.075 mm it is not silt or clay.
So it may be sand.
Moreover, PI = WL – WP = 35 – 27 = 8% (PI < 17)
∴ It is sand.
∴ it is SM.
