SC Grading Practice Questions - South Carolina Grading Contractor Examination Exam

For excavations 20 feet deep or less, OSHA Appendix B maximum allowable slopes (H:V) are:

All soils ½:1 Stable rock vertical; Type A ¾:1; Type B 1:1; Type C 1½:1 Type A 1½:1; Type B ¾:1; Type C vertical Type C ¼:1 because it is the strongest soil

Correct Answer:

Stable rock vertical; Type A ¾:1; Type B 1:1; Type C 1½:1

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