(1)  Guards in industrial occupancies, other than guards in storage garages, are permitted to consist of,

    (a)   a top rail, and

    (b)   one or more intermediate rails spaced such that the openings through the guard are of a size that prevents the passage of a spherical object having a diameter of 535 mm.


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