Code compliance. OBC 2024, NBCC, CSA — explained.
The Ontario Building Code, the National Building Code referenced loads, and the CSA structural standards explained for non-engineers — focused on the parts that actually drive design decisions on industrial mezzanine and stair projects.
Egress stair requirements in Ontario: width, dimensions, exterior stairs
Required width from occupant load, the rise/run and landing bands, and when an exterior exit stair wins.
Fixed cage ladders: requirements and dimensions in Ontario
When a fixed ladder needs a cage, the typical dimensions, and cage vs fall-arrest in 2026.
What is a switchback staircase?
The half-turn stair, the 16-riser rule behind it, and when it beats a straight run.
OBC 2024 stair changes: what shifted from OBC 2017
Egress width, riser/run, and guard updates that affect existing-building retrofits.
When do I need stamped drawings on a mezzanine project?
Permit-bound projects, the P.Eng. requirement, and what counts as a stamp.
Fall arrest vs guardrails: when each is the right answer
OSHA 2018 cage-vs-PFAS shift, and where Ontario OHSA still recognizes cages.
Mezzanine permits in Ontario: what triggers a permit, what doesn't
Building permit thresholds, the architectural-vs-engineering split, and inspection sequence.