15.100.490   Smoke removal openings.
   All smoke removal systems shall be designed to remove smoke directly out of the building. All exhausted smoke openings shall be located so that smoke will not be recirculated into that building or any other building. Systems shall be so designed and installed to eliminate smoke entering any main air duct, plenum, or shaft not used for smoke removal. (Prior code §§ 9.28.1248, 15.13.1302)