Are there any alternatives for complying CIBSE AM10 requirement for narrow plan? Our project will have a building width that is greater than 15m by almost 4m even with the presence of an atrium. The project will use natural ventilation as their strategy. Can CFD be use to show that, even with that width, airflow is well-distributed to the interiors of the building? Both sides of the building have openings for natural ventilation.