18-28-401.5 Ventilation openings.

   Ventilating openings in any room or space are hereby defined as apertures opening upon a public way, yard, court, public park, public waterway, or onto a roof of a building or structure in which the room or space is situated. They shall be windows, skylights, transoms, or other openings which are provided for ventilating purposes and which are equipped with adjustable louvers, dampers, or other devices to deflect or diffuse the air currents. French windows and doors shall be considered to be ventilating openings in living quarters.

18-28-401.5.1 Area of the openings.

   The area of ventilating openings shall be computed as follows.

18-28-401.5.1.1 Windows.

   The maximum area that can be opened.

18-28-401.5.1.2 Skylights.

   The area of the maximum opening to the outer air, provided that it does not exceed the area of the sashed openings to the outer atmosphere, or the area of the skylight well. If this area exceeds either the area of the sashed openings or the skylight well, the smaller area is the ventilating area.

18-28-401.5.1.3 Transoms.

   The free area through the sashed opening if the transom swings through an arc of not less than 60 degrees. It is the same percentage of the free area as the maximum angle of the transom when open to 60 degrees if the transom swings through an arc of less than 60 degrees.