Requirements for the Adhesive Joint
As a result of this (still ongoing) research, it has become apparent that structural bonded joints should be divided into different connection classes that describe their carrying behavior clearly in order to design them according to the static relevance of the bonded connection. Hence the working group “Adhesive Bonding" of the German Professional Association for Structural Glazing (FKG) is currently creating a guideline for the fabrication and monitoring of bonded connections in structural glazing . Figure 1 shows the general structural classification. The draft guideline proposes the division of bonded connections in continuous and discontinuous joints. Accordingly, continuous joints are assemblies or components such as hybrid bonded beams or structural glazing elements [9,10] that offer, due to their plane or distinctive linear bonding geometry or because of their structural integrity, a more ductile and redundant behavior. In opposite discontinuous joints are cross sections, connections, or details such as point fittings  and lap joints that show a brittle behavior as a result of their punctual or small bonding surface without structural redundancy. In Ref , small-scale push-out tests represent discontinuous joints and component tests represent continuous joints.