An incomplete list of audience requirements:
Aisles must be 36" wide if there is audience on one side, and 48" wide for both sides
There can be no more than 7 chairs between any one chair and the aisle(that's 8 seats if there is a aisle on one side, and 15 if both sides)
Any chairs that are more than 16 inches off the ground need audience railings.
There must be an unobstructed path from the chairs to the doors, with no stage area (masonite) in the way.
There must be 36 inches of unobstructed space in front of the first row of audience. Masonite counts as open space.
There should be 32" from chair back to chair back.
No step can be higher than 8"