This standard provides a means of classifying the performance of opening windows according to their strength in resisting, where appropriate, racking load, static torsion and their operating forces. Special aspects such as those of burglar resistance are not covered.
note:1 Effects on other criteria such as air permeability, are not addressed by this document.
BS EN 13115:2001 history
2020BS EN 13115:2020 Windows - Classification of mechanical properties - Racking, torsion and operating forces
2001BS EN 13115:2001 Windows - Classification of mechanical properties - Racking, torsion and operating forces