Windows and doors - Resistance to repeated opening and closing - Test method

This document establishes a standardized procedure for assessing the durability of doors and windows through repeated opening and closing cycles. The methodology focuses on evaluating the mechanical performance and operational reliability of fenestration products under simulated usage conditions. It outlines specific test sequences designed to subject the opening mechanisms, hinges, and locking systems to repetitive stress. The protocol ensures consistent measurement of wear and potential failure points over an extended period of operation. By providing a uniform framework, the text facilitates the comparison of product performance across different manufacturers and regions. The approach covers the preparation of test specimens, the definition of cycle counts, and the criteria for determining the end of service life. Compliance with this procedure aids in verifying that building elements meet requisite quality benchmarks for long-term functionality and safety without compromising their structural integrity or ease of use.