Dig It or Miss It? The Ultimate Excavator & Heavy Engineering Masterclass
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8
Excavating a trench deeper than 1.5m without shoring is MOST hazardous in which soil class?
Explanation
According to OSHA standards, Type C soil (such as loose gravel, sand, or wet mud) has zero cohesive strength and is highly unstable, registering the highest level of life-threatening trench cave-ins.