The requirements that follow from a building’s facts, its occupancy, storeys, area and use, worked out from what you enter once, each with its source.
Start here · 3.1.2.1 · 3.2.2.6–3.2.2.8
Major Occupancy
Inputs
Result
Read from OBC 2024Major Occupancy
Enter the inputs to see the result and its derivation.
A design aid, not a professional code opinion. Results are not a substitute for advice from a registered architect, professional engineer or qualified building official. Verify every output against the applicable edition before use in a permit application. Every figure is read from the printed 2024 Compendium; the edition setting records which edition governs the project, it does not change the numbers.