Ontario Building Code Practice Exam

A deck in a commercial building typically has a maximum allowable height of 1.5 meters. Any higher, and it may compromise the structural integrity and safety of the building. Option A of 1.0 meter may be too low and not provide enough space for people to move around comfortably. Option C of 2.0 meters and Option D of 2.5 meters may be too high and lead to additional structural and safety concerns. Therefore, B is the most appropriate and safe choice for the maximum allowable height of a deck in a commercial building.