The assessment of human exposure to airborne contaminant is an important issue in building design. The physiological significance of such exposure and technical means to minimise such risks have long been known in literatures. (1, 2, 3) In recent years, computational works have increasingly been seen used as design assessment tools as an alternative to site measurement and wind tunnel tests.
Combustion gases from diesel engines of trucks accumulate in the apparatus rooms of fire stations when fire trucks and emergency vehicles leave for or return from an emergency run. The situation is most extreme when fire trucks leave for an emergency run. All doors are closed for security reasons and combustion gases become trapped in closed apparatus rooms. These gases can migrate to the living quarters located next to the apparatus rooms, causing discomfort or potential health problems for personnel returning to the building.
Various studies on indoor and outdoor particulate matter in the urban environment in the vicinity of busy arterial roads in the centre of the subtropical city of Brisbane have indicated that the revised United States Environmental Protection Agency National Ambient Air Quality Standards (US EPA NAAQS) for P articulate matter PM2.5 could be exceeded not only outdoors but also indoors.
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