For the past 20 years, it has been possible to classify more and more building components. However, some are still missing e.g. doors and exterior doors. All types of openings in a fire separating wall must be able to meet the fire separation classification and thus integrity. It is especially important to choose the correct fire sliding door, or side hung fire door for exterior walls, these must be per. November 1st, 2019 be approved and CE marked.
”Fire doors and fire sliding doors are important as they prevent the spread of fire and smoke between building sections, thereby optimising personal safety and the rescue of values and minimising the extent of damage”. – Hans Raeder, Senior Risk Engineer, Risk Management Services Denmark
Today, we see a lot of buildings where the passive fire protection is supplemented by active fire protection as e.g. sprinkler systems that will prevent the fire from spreading. From a risk point of view, if the sprinkler system works, then there shouldn’t be a need for the passive constructions. However, if the sprinkler system fails, which is something we experience every year, then it is necessary to have a passive construction, which can withstand a fire without the help of an active system.
The penetration of fire rated walls and floors is often necessary to accommodate electricity, data cables and piping systems. In these cases, exceptional care is needed. Fire rated walls will be unable to provide protection against the spread of smoke and heat if there are unsealed penetrations.
In connection with the fire separations, it is important to have a correct finish to the roof, either as a fire parapet, or fire parapet replacement. A building can be divided into several fire sections, where the fire section walls must prevent a fire from spreading and help to limit the extent of the damage.