Defines the "anatomy" of a safe railing. A standard guard-rail must include: Handrail: The top rigid element for body support.
During the design phase, pay close attention to:
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Steps must overlap by at least 10 mm to prevent feet from slipping through the open gaps.
: Run structural calculations or physical load tests to confirm the assembly meets the deflection limits outlined in the PDF documentation. Defines the "anatomy" of a safe railing
| | 2002 edition | 2016 edition | Effect / comment | | --- | --- | --- | --- | | Guard‑rail infill (vertical spacing) | ≤ 200 mm | ≤ 180 mm | Higher fall‑prevention safety | | Minimum width of stepladder | 450 mm | 500 mm | Improved access safety | | Scope clarity | “general machinery access” | specifically for fixed means of access and non‑powered parts | More precise applicability | | Testing and verification methods | scattered throughout the document | fully consolidated in new Section 8 | More systematic testing requirements |
≥45∘is greater than or equal to 45 raised to the composed with power 75∘75 raised to the composed with power Single flight height is limited to (compared to in older versions). Overlap ( ): The overlap between steps must be at least 3. Guard-rails (Handrails) : Run structural calculations or physical load tests
The standard is mandatory for that needs fixed access ways. It also applies to mobile machinery when fixed access parts are used. However, it is not intended for powered access equipment such as lifts, escalators, or other devices specifically designed to lift people between levels.
Safety of machinery – Permanent means of access to machinery – Part 3: Stairs, stepladders and guard-rails.