Daylight factor values on the workplane

DIAL+ allows you to calculate Daylight Factor values on virtual plans (horizontal planes or vertical walls). Simulations are made with Radiance ( under CIE overcast sky (Commission International de l'Eclairage).

This calculation module has been validated according to the CIE 171-2006 protocol: (Download the validation document)


This calculation is consistent with the requirements of the main labels dealing with daylighting (CERTIVEA  BREEAM, LEED, etc).


Daylight Factor


Daylight factor values in the first rank area (Certivea)