Unformatted text preview: = = Soil is sandy silt , or M (and we cannot do more without Atterberg Limits). (2 points) A soil has a musty odor, a liquid limit of 145% and a plastic limit of 55%. Classify this soil using USCS. See slide #14 of Lecture 12. The musty odor indicates an organic soil and it’s PI = LL – PL = 145% - 55% = 90%. Using the A-line equation tells us the threshold between (MH, OH) versus CH, PI = (0.73)(LL-20) = (0.73)(145-20) = (0.73)(125) = 91 > than our PI = 90 therefore OH . (2 points) What is the above soil’s classification according to AASHTO? See slide #26 of Lecture 12. The equivalent AASHTO of USCS OH is A-7-6 ....
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- Summer '10
- Civil Engineering, Trigraph, Atterberg limits, AASHTO, Florida International University, Albert Atterberg