Evacuation origin

Defined in the CTE-DBSI (basic document of fire safety) as everything It is the occupiable point of a building, except those inside the houses and those of any enclosure or set of them communicated with each other, in which the density of occupation does not exceed 1 person / 5 m2 and whose total area does not exceed 50 m², such as hotel rooms, residence or hospital, office offices, etc. -The points that can be occupied of all the premises of special risk and those of the zones of occupation null whose surface exceeds 50 m², are considered origin of evacuation and must comply with the limits that are established for the length of the evacuation routes until the exits of such spaces, in the case of areas of special risk, and, in any case, until the exits of the floor, but it is not necessary to take them into consideration in order to determine the height of evacuation of a building or the number of occupants