B-1.1, r. 2 - Construction Code

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10.07. The walls of a pool must be equipped with recessed fittings in the shallow end, at a minimum distance of 300 mm before the change in slope of the pool bottom from gentle to steep, to which a safety line supported by buoys can be attached to warn bathers of the change in slope.
O.C. 115-2013, s. 1.