The Ontario Building Code | Toe-Boards Required
22.214.171.124. Toe-Boards Required
(1) Where tools or other objects could fall from the floor of an upper level to a lower level in a room or space intended for use as a Group F occupancy, the edge of the floor at the upper level shall be provided with a toe-board extending from the floor surface to a height at least 125 mm above the floor surface.
3.3.6. design of Hazardous Areas