The Ontario Building Code | Materials
9.17.4.2. Materials
(1) wood columns shall be either solid, glue-laminated or built-up.
(2) Built-up columns shall consist of not less than 38 mm thick full-length members,
(a) bolted together with not less than 9.52 mm diam bolts spaced not more than 450 mm o.c., or
(b) nailed together with not less than 76 mm nails spaced not more than 300 mm o.c.
(3) Glued-laminated columns shall conform to Section 4.3.
In Plain Language
Wood columns must be made of materials meeting the requirements set out in this article.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.