This mission comes in complement from architect’s work in order to determine the contribution necessary in artificial illumination. It validates or optimizes the door, window installation of and other specifications.

This study defines :

. The daylight factor, which expresses as a percentage, the relationship between illumination available inside a room and external horizontal illumination by overcast sky.
. The Autonomy in daylight, which represents time during which the room will be able to do without the illumination. This value depends on the level of daylight factor, necessary illumination as well as localization and orientation of the building.

Establishment and photometric calculations of luminaries intended to dimension the installation of illumination.