ABSTRACT
For the analysis of a structural system for seismic actions, a set of properties of the system must be taken into account in advance, since according to EC8-1/2004 these properties influence
• Design actions • Structural model • Method of analysis • Capacity design of columns
These properties are
• The structural regularity of the building • Its torsional flexibility • The ductility level of the structure
Most modern Codes for the above properties specify quantitative criteria with which the analysis must comply. The above issues will be examined in detail in the subsequent sections.
5.2 STRUCTURAL REGULARITY
