Originally Posted by
Mike Huppi
The room was about 12x12 and the window was 42 wide slider and 32 high.
The window is too small for the 8% minimum for natural light.
Which also makes half of the window too small for the 4% minimum for natural ventilation.
12' x 12' = 144 sf x 144 = 20,736 sq in
20,736 x 0.08 = 1,659 sq in ... 42" x 32" = 1,344 sq in (approximately 6-1/2% instead of 8%)
20,736 x 0.04 = 830 sq in ... 21" x 32" = 672 sq in (approximately 3% instead of 4%)