Guardrails are mandatory on any open side where a fall height exceeds 500 mm. Key requirements:
Any stairs or stepladders elevated more than 500 mm above surrounding level require guardrails.
The standard dictates the relationship between the rise (height of the step) and the going (depth of the step). This is often calculated using the "step formula" to ensure a natural walking rhythm.
These are steeper than stairs but less steep than vertical ladders.
The standard provides clear metrics:
For stepladders (45°–75°):
The document sets out specific technical parameters to minimize the risk of falling, slipping, and overexertion. The key sections include:
