In premises where pyrotechnic activities are carried out, exits and clearances must comply with the following specific requirements:
1° There may be no fewer than two exits where these must allow the passage of more than five people; for a number of people ranging from six to ten, the total width of the exits must not be less than 1.80 metres; this width is increased by 0.60 metres for every one to five people in addition to the first ten;
2° For a number of people between three and five, if there is only one exit, its width must not be less than 1.40 metres;
3° The widths mentioned in 1° and 2° are measured net of projections and obstacles.