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passpepasspe

Sample USCS Problem. HELP!

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Please help me solve the problem below. The solution that I have does not make sense to me.

Laboratory tests on a soil sample generated the following results:

Sieve # % Passing

#4 90

#10 81

# 20 70

#40 60

#100 30

#200 10

Liquid Limit 26

Plastic Limit 18

According to the Unified Soil Classification System, the classification of this soil sample is most nearly:

A) SW‐SM

B.) SP‐SC

C) SP‐SM

D) SW‐SC

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got it. nevermind. there was an error

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