Small atriums
ERP fire safety - Technical instruction no. 263 on the construction and smoke extraction of interior open spaces
Article REF: TBA3046 V1
Small atriums
ERP fire safety - Technical instruction no. 263 on the construction and smoke extraction of interior open spaces

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Publication date: December 10, 2013, Review date: March 1, 2021 | Lire en français

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2. Small atriums

2.1 Definition

Small atria are located in buildings where the highest floor is no higher than 8 m above the atrium level (R + 2 or R + 1 with basement). Their basic cross-section is at least 5 × 5 m.

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2.2 Smoke extraction in small atriums

Smoke extraction is carried out :

  • or naturally through openings installed in the upper part of the atrium and representing a free area equal to 1/100 of the basic cross-section with a minimum of 2 m ...

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