Platforms Subject to Snow and Occupancy Loads

    (1)  Balconies, decks and other accessible exterior platforms intended for an occupancy and subject to snow loads shall be designed to carry the specified roof snow load or 1.9 kPa, whichever is greater, where the platform, or each segregated area of the platform, serves a house or an individual dwelling unit.

Article 9.4.2.3 Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca for educational purposes only.