INDOOR AIR QUALITY IN SELECTED UNDERGROUND CAR PARK IN MALAYSIA: STUDIES ON VENTILATION SYSTEM AND THE DESIGN LAYOUT

The growth of automobile population in Kuala Lumpur is an important issue for car parking spacesespecially commercial buildings. The large multi storey and underground car parks seem to offer goodsolution nowadays. Undeniably, indoor air quality (IAQ) is a vital element in the underground car park. Itis so important due to its effects to the human beings. It can affect someones health condition indirectlyif someone stays in the environment such as underground car park with the poor IAQ for a long time.This problem can be reduced by providing a better ventilation system in the underground park so thatthe IAQ can be improved and increased well. Provision of adequate mechanical ventilation is essentialto maintain an acceptable air quality in underground car parks. This paper addresses concerns aboutpsychological aspect on indoor air quality in underground car park associated with ventilation systemand design layout. Users in a sample of underground car parks were interviewed in the course of aquestionnaires survey dealing with nuisance occasioned by the pollutant mainly due to vehicleemissions. Accumulate two case studies measured data is important for the further discussion anddevelopments to overcome the problem. This paper gives a fundamental data for the help of the futurerefinements.