The Ontario Building Code | Support for Vertical Piping
7.3.4.4. support for Vertical Piping
(1) Except as provided in Sentence (2), vertical piping shall be supported at its base and at the floor level of alternate storeysby rests, each of which can bear the weight of pipe that is between it and the rest above it.
(2) The maximum spacing of supports shall be 7.5 m.
In Plain Language
Vertical piping must be supported at its base and at intervals up its length, keeping the pipe properly aligned and preventing its own weight from stressing joints below.
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.