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

Under OSHA Appendix B, when is a 1/2 horizontal to 1 vertical (63-degree) slope allowed in Type A soil?

For any Type A excavation of any depth and duration Only as a short-term maximum slope in Type A excavations 12 feet deep or less In Type C soil after a rainstorm Whenever a trench box is also used, regardless of soil type

Correct Answer:

Only as a short-term maximum slope in Type A excavations 12 feet deep or less

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