Verdun Natatorium approximately $11,000 each year from 1946 to 1951. By 1951, the Natatorium had never lost money and was projected to fully pay off its loan in ten more years. The city of Montreal states that the main pool can accommodate 1,150 bathers while the "Montreal Gazette", in 1951, reported that the pool could handle up to 6,000 swimmers on a daily basis. The discrepancy may be due to changes to the facility and/or safety regulations, over time. In the summer 2005, a heated wading pool was added, with a capacity of up to 250 children. Verdun Natatorium The Verdun Natatorium
Indoor air quality ventilation. Instead of setting throughput at a fixed air replacement rate, carbon dioxide sensors are used to control the rate dynamically, based on the emissions of actual building occupants. For the past several years, there have been many debates among indoor air quality specialists about the proper definition of indoor air quality and specifically what constitutes "acceptable" indoor air quality. One way of quantitatively ensuring the health of indoor air is by the frequency of effective turnover of interior air by replacement with outside air. In the UK, for example, classrooms are required to have 2.5 outdoor air changes per