Common Hazards第 26 / 100 题
Where should excavated soil (spoil pile) be placed relative to the edge of a trench?
a.Directly on the trench edge
b.At least 2 feet back from the edge
c.It does not matter
d.Inside the trench
解析
Spoil piles and other materials must be kept at least 2 feet back from the edge of an excavation. This reduces the load on the trench walls and prevents materials from rolling back in. Keeping the edge clear also gives workers a safe exit path.
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