An toànCâu 1264 / 1605
In the OSHA soil classification system, which soil type is the most stable?
a.Type B
b.Stable rock, then Type A
c.Previously disturbed soil
d.Type C
Giải thích
OSHA classifies soils as Stable Rock, Type A (most stable soil), Type B, and Type C (least stable). Sloping and shoring requirements become more conservative as soil stability decreases.
Trích dẫn luật: 29 CFR 1926.652 Appendix ALuyện miễn phí toàn bộ 1605 câu hỏi — không cần đăng ký.
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Người kiểm duyệt Abraham Chen — Licensed California General Contractor (CSLB License #1101856 — kiểm tra)