Which type of scaffolding requires specific training before workers can erect, disassemble, or use it?

Explanation

Neither the Construction Safety Orders nor the federal standard puts a height or a type limit on scaffold training: section 1637(k)(1) requires erection and dismantling to be performed under the supervision and direction of a qualified person whatever the scaffold, and 29 CFR 1926.454(a) requires each employee who performs work WHILE ON a scaffold to be trained by a person qualified in the subject matter. The three wrong answers each import a limit from somewhere else. Ten feet (a) is the federal trigger for fall protection on a supported scaffold, not for training. Tube-and-coupler scaffolds (c) do carry extra design duties, which is why the type feels special. And (d) is the commonest misconception of the four: training belongs to the people who stand on the platform as much as to the crew that builds it, because the hazards they meet - overloading, missing planks, guardrails removed for a delivery - come after erection.