5. Smoke extraction (article P 14)

For the calculation of the coefficient a, as defined in IT 246, the premises are divided into the following classes, according to the foreseeable size of the fireplaces:

• class 1: playrooms ;

• class 2: balls or dances.

In addition to article DF 7 (section 7 of [TBA 3 004] ), dance halls with mezzanines or partial levels, as well as halls located in basements, must be smoke-free.

In addition to article DF 5 (section 5 of...