
Work Platform Guardrail Height Requirements in Canada
Canadian work platform guardrails require a top rail height between 1000mm and 1100mm (39-43 inches) per CSA Z259.14. Alberta OHS Code Part 9 specifies 42 inches as standard. Mid-rails must be positioned halfway between the deck and top rail. Toe boards of 100mm minimum height prevent objects from rolling off elevated surfaces. Non-compliant guardrails are the most common citation during workplace safety inspections.











