Red Seal Plumber Practice Questions - Red Seal Plumber (Interprovincial Standards Red Seal Examination) Exam

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Before working in a trench deeper than 1.2 m, occupational health and safety regulations generally require the trench to be:

Left open with no protection if soil appears stable Sloped, shored, or otherwise supported against collapse Backfilled immediately after pipe is laid Marked only with warning tape at grade level

Correct Answer:

Sloped, shored, or otherwise supported against collapse

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