Numerous investigations have shown that the maximum glass stresses in laminated glass (LG) can be reduced significantly by respecting the shear bond through the polymeric interlayer during the structural design process. The large variety of interlayer materials and the typical time- and temperature-dependent behaviour of polymers make the consideration of the interlayer in the design of laminated glass complex. Standards and guidelines therefore offer a wide variety of approaches, which will be explained and compared in this workshop. The workshop will be split into two parts. The first session introduces the mechanical behaviour of different laminated glass interlayers, with a special focus on time and temperature dependency. In addition, it will be shown how this material behaviour can be determined experimentally. The second part deals with current design approaches in national and international standards and guidelines. The different approaches (e.g. ω-method, simplified effective thickness method and different levels of accuracy in FE modelling e.g. linear elastic or viscoelastic) are explained and the results compared.