EN 81-20 for lift safety: scope, limits and what to ask for
EN 81-20 sets 1,000 N on a locked landing door and 2,000 N on a car roof. Here is the scope, where the standard stops, and the drawing fields it implies.
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Topic hub · 30 guides
Standards and compliance
Standards are only useful when you know their scope. ISO 2768 does not cover welded assemblies; ISO 13920 does. IEC 62208 covers an empty enclosure, IEC 61439 covers the assembly inside it. This cluster explains what each standard covers, where it stops, and the document a buyer should expect at first article and at audit.
Guides in this topic, page 4
Which standard applies, what it actually covers, and the evidence a buyer should ask for: ISO, IEC, EN, RDSO and material certification.
ISO 9013 for laser cut edges: scope, limits and classes
ISO 9013 classifies a laser cut edge by perpendicularity and roughness, not by whether it looks clean. What each range allows and how to write the note.
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Control plan for process control: scope and limits
A control plan only works when frequency and reaction are sized. How to read one, the exposure arithmetic behind the interval, and where ISO 9001 stops.
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