Stairs are the preferred method of access when space allows, typically featuring an angle of inclination between 30° and 45°.
At least one intermediate knee rail must be installed. The clear space between the top rail and the knee rail, or the knee rail and the toe-plate, must not exceed 500 mm.
: Must include a handrail, at least one kneerail, and a toe-plate to prevent objects from falling. Stairs and Stepladders
: Guard-rails must withstand a minimum lateral point load without significant deflection. The standard details specific test methods where weights are applied to the top rail to simulate a falling worker. din en iso 14122-3 pdf
Available through local national standards institutions (e.g., DIN, BSI, AFNOR).
The is a harmonized European and international standard that specifies safety requirements for permanent means of access to machinery—specifically focusing on stairs, step ladders, and guard-rails .
≥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) Stairs are the preferred method of access when
Understanding the difference between DIN, EN, and ISO is crucial when purchasing the correct standard.
In your technical file (for CE marking), you reference din en iso 14122-3 pdf and cross-check each measurement against the standard’s tables.
DIN EN ISO 14122-3 is a harmonized European and international standard. It specifies safety requirements for non-powered stairs, stepladders, and guard-rails that form part of a stationary machine or provide access to industrial buildings and structures. The Four-Part Standard Structure : Must include a handrail, at least one
Compliance can be verified through either or physical testing . Load Requirements: Steps must resist distributed loads of (low density) or (high density). Guard-rail Strength: Must withstand horizontal loads (e.g., applied over ) to ensure structural integrity. Key Scope Limitations
Input the mathematical load formulas found within the standard into engineering design software or CAD tools. This ensures that the structural integrity of fabricated guard-rails matches the safety factors required by the European harmonized standard. Procurement Specifications