PART 8 — SEWAGE SYSTEMSUpdated for the 2024 Ontario Building Code
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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,
LR = 400/T
where,
LR = loading rate of the sidewalls in litres per day/m2, and
T = percolation time.
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.