J.H. Moores Memorial Natatorium public park system in Lansing. One of those parks was Moores Park, which he donated to the city in 1908. In the early 1920s, Wesley Bintz came to work in the city engineer's office, only a few years after receiving his degree from the University of Michigan in 1918. In 1922 he became the City Engineer, and in that capacity he designed this natatorium, which was constructed in 1923. Bintz resigned later that year, and began a career devoted to designing swimming pools. The natatorium has been open every season, save when it was renovated in 1980. It may be
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