S-2.1, r. 4 - Safety Code for the construction industry

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3.9.1. Generality: Scaffoldings constructed in accordance with this subdivision shall be required in places where workers cannot carry out their work safely from the ground or from a solid construction. However, ladders may be used for work requiring less than one hour.
R.R.Q., 1981, c. S-2.1, r. 6, s. 3.9.1.