Input the mass percentage of fasteners (plates, gussets, etc.) in the finished product. By default, it is assumed to be 8.728% of the finished angle mass, a value corresponding to the quantity calculated for the reference FDES (Fiche de Déclaration Environnementale et Sanitaire [environmental and health declaration sheet]).
The finished angle is obtained by shaping the industry steel angle, in particular with the addition of fasteners, by the metal constructor. It corresponds to the product leaving the workshop, which is then transported and then assembled on site.