Hello all:
Does anybody have an experience with following:

If a classroom is of an irregular shape – lets say has an entrance nook / foyer 8 feet wide by 6 feet deep ( and it is not possible to put any furniture in it), should this nook’s/ foyer’s square footage be excluded from total square footage for this classroom daylighting calculations?

If the sq.ft. for nook / foyer is to be deducted, then what is the minimum dimensions for this scenario, where the nook / foyer will be included OR what is a trigger to add the foyer to the classroom daylighting calculations ( maybe furniture placement, etc)