HamiltonBuilding PermitsEvery building permit
Sizing of Water Service Pipe for Buildings Containing More than One Dwelling Unit
Published by City of Hamilton
This is the City of Hamilton’s document, as published on its website on 19 October 2026. The municipality may have changed it since: check the current version at the source. Legal notice
- Type
- Form
- Published by
- City of Hamilton
- Date
- August 25, 2022
- Also called
- Sizing of Water Service Pipe Form - More Than One Dwelling Unit
- Form reference
- Ontario Building Code, Division B, 7.6.3.1
- For
- designer
- Signed by
- designer
- Building types
- All building types
- Pages
- 1
- Instruments
- Ontario Building Code, Division B, Table 7.6.3.2.A · Ontario Building Code, Division B, Table 7.6.3.4
Overview
The City of Hamilton Building Division's water service pipe sizing form for buildings containing more than one dwelling unit, the counterpart to its one-dwelling-unit form. It states the conditions under which its tables apply: minimum water pressure of 200 kPa at the entry to the building, total maximum water system length of 90 m, and hydraulic loads for maximum separate demands. A fixture-by-fixture table totals the hydraulic load in fixture units, a second pairs that load with pipe size at 2.4 m/s water velocity, and the designer signs with BCIN.
What it covers
- Part 1 - Hydraulic Load (Fixture Unit Calculation)
- Part 2 - Sizing of Water Service Pipe
- Part 3 - Design of Water Service Pipe
- Designer Information
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