Samenvatting
Tunnel ventilation and the resultant impacts on ambient air quality have been the most difficult and controversial aspects of tunnel design in Australia in recent times. There has been a strong push to install filtration equipment in recently developed tunnels for environmental reasons. The resultant pressure on authorities and regulators has led to a conservative design and a considerable cost impost on projects. This paper provides both a retrospective analysis of recent tunnel ventilation design in Australia and a commentary on key areas where these designs may be reviewed in the future. For the covering abstract see ITRD E135448.