SafetyQuestion 655 of 700
A supported scaffold is being erected on graded soil. What is the BEST practice for the scaffold's footing?
a.Set base plates on mud sills or another firm, level foundation capable of carrying the load without settling
b.Rest the legs directly on loose backfill to allow drainage
c.Support the legs on stacked concrete blocks or bricks for height adjustment
d.Place the legs on the spoil pile since it is close to the work
Explanation
Correct: scaffold legs need base plates bearing on mud sills or another firm, level, load-rated foundation so the scaffold cannot settle or shift. Loose backfill, stacked blocks or bricks, and a spoil pile are all unstable, unequal supports expressly discouraged because they can crush, tip, or sink under load, collapsing the scaffold.
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