12. Smoke control
12.1 Smoke extraction from main evacuation staircase
The main evacuation staircase, if enclosed, is pressurized and has an opening of at least 1 m 2 at the top, the manual control of which is located close to the access to the staircase on the evacuation level.
The overpressure achieved is between 20 and 80 Pa. These values apply with all doors closed. The flow rate is such as to ensure an air velocity greater than or equal to 0.50 m/s through the access door to the sinitré level, with the other levels closed.
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Code
Article R. 4512-7 du Code du travail créé par décret n° 2008-244 du 7 mars 2008 – art. (V).
Article R. 122-2 of the French Construction and Housing Code, amended by Decree no. 2009-1119 of September 16, 2009.
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Order of March 19, 1993 (in application of article R. 237-8 of the French Labor Code, this order establishes the list of hazardous jobs for which a written prevention plan is drawn up).
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