The Ontario Building Code | Application
(1) This Section applies to columns used to support,
(a) beams carrying loads from not more than 2 wood frame floors where,
(i) the supported length of joists bearing on such beams does not exceed 5 m, and
(ii) the live load on any floor does not exceed 2.4 kPa,
(b) beams or header joists carrying loads from not more than 2 levels of wood frame balconies, decks or other accessible exterior platforms, or 1 level and the roof, where,
(i) the supported length of joists bearing on such beams or joists does not exceed 5 m,
(ii) the sum of the specified snow load and the load due to use and occupancydoes not exceed 4.8 kPa, and
(iii) the platform serves only a single suite of residential occupancy, or
(c) carport roofs.
(2) columns for applications other than as described in Sentence (1) shall be designed in accordance with Part 4.