International Organization for Standardization (ISO)
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ISO 9380:1990
Scope
This International Standard specifies the method to be used to determine the effect of repeated torsion on doorsets and their hardware.
It applies to all doorsets made of any materials with vertically hinged doorleaves in their normal operat-ing condition for which they are designed and in-stalled according to the manufacturer's recommendations as in a finished building, bearing in mind the test conditions defined below.