Waikiki Natatorium War Memorial Waikiki Natatorium War Memorial The Waikiki Natatorium War Memorial is a war memorial in Honolulu, Hawaii, USA, built in the form of an ocean water public swimming pool. The natatorium was built as living memorial dedicated to "the men and women who served during the great war" (now known as World War I). In March 1918, the Daughters and Sons of Hawaiian Warriors first proposed a memorial to the more than 10,000 men from the then Territory of Hawaii who volunteered to serve in the great war. The Honolulu Ad Club agreed with the idea and on November 20, 1918,
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