SafetyQuestion 596 of 1605
For Type B soil, the maximum allowable slope of an excavation wall from horizontal (when sloping is used as the protective method) is:
a.1:1 (45 degrees)
b.1.5:1 (about 34 degrees)
c.2:1 (about 27 degrees)
d.Vertical (90 degrees)
Explanation
Under §1541.1 and Appendix B, sloping for Type B soil requires a horizontal-to-vertical ratio of 1:1, which is approximately 45 degrees from horizontal. Type A allows steeper (3/4:1) and Type C requires flatter (1.5:1).
Law Reference: 8 CCR §1541.1Practice all 1605 questions free — no signup required.
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