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  • 94036 Passau
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  • Martin Weber
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Design basis for smoke ventilation through façades (DIN 18232-1)

(PresseBox) (Passau, ) The natural smoke ventilation of buildings through façades has been a custom and common practice for many years and is a method used in the most diverse type of buildings. Examples of this include residential buildings with staircase and lobbies that act as escape and or rescue routes, office and administration buildings, sports centers, atriums, shopping centers, public buildings such as airports, railway stations and exhibition centers, as well as commercial halls. Natural smoke ventilation through the roof is not always possible due to the construction and design of the building.

The revision of DIN 18232 Part 2 has given full consideration to this common practice of natural smoke ventilation through vertical building openings and thus formed the basis for planning and designing smoke ventilation systems in exterior walls.

The great benefit of smoke ventilation through the façade is the possibility of being able to use a whole range of different window designs. This gives the designer an extraordinary amount of scope to design smoke ventilation systems with freedom and imagination backed by the assurance of proven reliability of electrically driven smoke and heat ventilation systems.

This standard applies to the design and installation of natural smoke ventilation systems for buildings requiring smoke ventilation describing the requirements for roof mounted ventilation in DIN 18232-1 for single-storey buildings and top storey sections of multi-storey buildings, as outlined in Part 1.

In addition Part 2 of this standard also provides informative notes for the design and installation of natural smoke ventilation systems for buildings with smoke ventilation through the exterior walls.

This standard contains tables and calculation methods for designing low-smoke layers to comply with the requirements for various safety limits. This standard contains notes and definitions that must be complied with when using these design rules and for the installation of natural smoke ventilation systems."


The regulations in building regulations relating to smoke ventilation systems, for example in the form of smoke ventilation openings of a specific size in staircases or at a specific distance from fire walls, are not affected by this. Special verifications are required for deviations from this Standard.

(Original text of DIN 18232 Part 2)

As a result of the rewording of the applications for DIN 18232 Part 2, it is now possible for the first time to plan and design smoke ventilation systems through the vertical surfaces of buildings to a standard. This method, which has been acknowledged and used successfully for decades in many thousands of projects, is now reflected in the standard.