Literature on the various types of pressurization systems, stair use during evacuation, and code requirements was reviewed and summarized. Non-fire and fire tests were conducted in the 10-story experimental fire tower of the National Fire Laboratory of the National Research Council of Canada. The flow resistances of an open stair door at various angles were measured. Under fire conditions, the vertical profiles of pressure differences across the stairshaft wall and those of the velocity pressure at the stair door opening were measured.
Going against the conventional wisdom, a builder in Colorado built-and sold more than 700 extra-energy-efficient homes. The homes' owners now spend half as much on space heating as their neighbors do.
Login