DS/INF 1990:2021+Till.1:2022

Consequences classes for building structures

Note: DS/INF 1990:2021+Till.1:2022 replaces DS/INF 1990:2021 and DS/INF 1990:2021/Till.1:2022, but such that the latter's changes are incorporated. *Eurocodes became mandatory in early 2009 as a basis for the design of load-bearing building structures in Denmark. With this, Eurocode 0 introduced the concept of "consequence classes" to "... take into account the consequences of failure or malfunction of the construction..." (DS/EN 1990:2007). At the same time, the concept of consequence class replaced the concept of "safety class" used in the previous Danish construction standards.*The terms "safety class" and "consequence class" have, according to experience, given rise to uncertainty about the placement of constructions and buildings in the various classes both during design and construction case processing.*In addition, the choice of consequence class can be associated with increased construction costs and increased expenses for control of both design and execution, which is why the choice may involve conflicts of interest.*This DS/INF 1990 describes and elaborates the basis and guidelines for the placement of constructions in consequence classes with a view to establishing a common framework of understanding for authorities, builders and planners, which can simultaneously help prevent unnecessary construction costs and too little safety.