NV A-15 Sewers And Drains Practice Questions - Nevada A-15 Sewers, Drains And Pipes Contractor Examination Exam

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A cohesive clay has an unconfined compressive strength of 1.8 tsf. The same soil was previously excavated and backfilled. How must it be classified under OSHA Subpart P Appendix A?

Stable rock Type B, because previously disturbed soil cannot be Type A Type A Type C, because all backfill is Type C

Correct Answer:

Type B, because previously disturbed soil cannot be Type A

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