The Ontario Building Code | Sizing
8.4.2.3. Sizing
(1) A Class 2 sewage system shall be designed and constructed so that the loading rate to the side walls shall be not more than the value calculated using the formula,
where,
LR = loading rate of the sidewalls in litres per day/m2, and
T = percolation time.
Section 8.5. Class 3 Sewage Systems
8.5.1. General Requirements
In Plain Language
This article covers sizing requirements for the sewage system component addressed in this Section, ensuring capacity matches the anticipated design flow.
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.