Steel quality and static analysis

Abstract

In this paper the provisions in MC 90 for the structural analysis and for the required ductility of steel are explained and background material is given. In general, the provisions agree well with the current state of research. Some possible improvements are pointed out. The ductility of the currently produced reinforcement differs considerably depending on the production method. Therefore three different steel classes in respect to ductility have been introduced in MC 90. This is correct from the scientific point of view but may cause serious problems on site (exchange of steel types). Therefore the ductility of steel type B should be improved to an acceptable degree so that for all non-seismic applications only one ductility class is required.