A trench excavation is 14 feet deep in Type A soil. The contractor wants to use sloping instead of shoring. What is the maximum horizontal distance required from the top edge to achieve proper sloping under Cal/OSHA standards?
Correct Answer
C) 10.5 feet
For Type A soil, Cal/OSHA requires a 3:4 slope ratio. For a 14-foot deep trench: 14 × 0.75 = 10.5 feet horizontal distance.
Why This Is the Correct Answer
For Type A soil, Cal/OSHA requires a 3:4 slope ratio. For a 14-foot deep trench: 14 × 0.75 = 10.5 feet horizontal distance.
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