This lot is 14 feet wide. It is the shopfront adjacent to and coordinated with the Tailor shop, also dark green and red. The glazing is only 25% of the entire first floor facade if the side entry windows are not counted, 35% if they are. Code standards must be clear on what to measure. Doing it on a photograph means you are counting only what can be seen from the sidewalk directly in front of the store.
To measure glazing percentages on photographs:
1. Shoot the facade straight on, with no diminishing perspective. (The method will work with vertical or horizontal keystoning only if the glazing is symmetrical in the same direction as the keystoning. ) 2. Using Histogram>Show Statistics, record the number of pixels in the total first floor facade, or whatever area will be regulated. 3. Select only the glazing (OK to include muntins). Press Shift to select more than one area. 4. Clear the statistics cache using the refresh symbol in the palette, then record the total of the selected pixels. 5. Divide smaller number into larger in a percentage calculator.