Does EN 17037 require specific levels of illuminance?
When it comes to daylight provision, the standard only gives levels of illuminance in terms of the minimum, medium and high performance levels that are a feature of the document. It does not specify levels for particular tasks or building uses.
The minimum level of 300 lux is based on a number of studies, having been described as suitable illumination for prolonged office work, and the level at which the probability of switching on electric lighting is low. Design levels for artificial lighting also use a 300 lux threshold.
Again, this leaves the designer free to aim for higher levels where certain building uses require it, and where specified by guidance particular to that building type.
VELUX Commercial specialises in offering daylight solutions for commercial and public buildings. Contact us to find out how our products can improve daylighting in your project, or find out more about why this standard was created.