Design of reinforced concrete walls, according to EC8

This paper deals with the European standard EN 1998 (EC8), which is about the design of earthquake resistant structures. We limited ourselves to concrete structures, with emphasis on different types of concrete walls. An idealised building was used to demonstrate the design of walls according to EC8. Three different types of walls have been discussed: rectangular cross-section walls, coupled walls and 'T' walls. According to EC8 it is possible to choose between two types of reinforced concrete design: ductility class high and ductility class medium. One of the scopes of the paper was to determine which one is more appropriate for reinforced concrete walls. Maximum design ground acceleration in Slovenia was assumed in modal response spectrum analysis, which was followed by dimensioning, according to EC8 as well. Some problems occured, especially while calculating the factor ε, which increases shear forces in the analysis. In the majority of cases it is believed that the main reason for problems is the use of cracked section properties, while calculating the wall stifness. Some versions were dimesioned in detail and also shown in the plans of reinforcement