This research paper reports the experimental and theoretical results of the project “Remaining Structural Capacity of Laminated Safety Glass” at ETH Zurich. The aim of the project is to develop new mechanical models and to control the post breakage behaviour of laminated safety glass (LSG). At first the different stages of failure of LSG and the corresponding definitions are given to explain the different capacities of the structure. In broken LSG the poly-vinyl-butyral (PVB) foil works as tension reinforcement and the upper broken glass layer carries the compression forces. Therefore the mechanical properties of the foil were determined using tensile tests. Bending tests combined with impact tests demonstrate that the different glass types, bearings, the type of initial failure and dimensions of the specimen determine the post breakage behaviour. As observed in these tests the fracture behaviour affects the remaining structural capacity (RSC). Different types of yield lines can evolve from initial cracks. The yield line patterns influence the ultimate load decisively.