Question

Using the daylight factor method, compute the interior illumination level at the centre of the room below considering the eastern façade only and assuming an external illumination level from an overcast sky conditions of 1200 lx. Assume clear double pane glass and the following reflectance values: ceiling (0.80), walls (0.50), floor (0.30), and windows (0.15). all dimensions are in m.

Answer 1