SC Water And Sewer Lines Practice Questions - South Carolina Water And Sewer Lines Contractor Examination Exam

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A cohesive clay has an unconfined compressive strength of 1.8 tsf, but the material was previously disturbed when an old sewer was removed. How must a competent person classify that soil under Appendix A?

Type B or Type C, because no soil is Type A if it is previously disturbed Type A, because 1.8 tsf exceeds the 1.5 tsf Type A threshold Type C only if water is freely seeping Stable rock, because the strength exceeds 1.5 tsf

Correct Answer:

Type B or Type C, because no soil is Type A if it is previously disturbed

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