This article summarizes key physical, safety, and environmental data for common refrigerants and leading candidates. It includes the latest environmental data from international scientific assessments of stratospheric ozone depletion and global climate change. By James M. Calm, P.E., and
Glenn C. Hourahan, P.E.
The traditional concerns represent the tip of the iceberg for the commissioning agent looking at smoke and fire control systems. Inspecting the entire operation can range from confirming smoke control pressure to testing mobile phones used for emergencies. By Charles A. Bean, and
John F. McCarthy, Sc.D., C.I.H.
Hollywood and Highland is no longer just an intersection - it's 2 million square feet of multiuse commercial space where visitors can do everything from grab lunch to attend the Academy Awards. Designers faced the usual space challenges, but other special concerns ranged from adjusting to the facility's late classification as a high-rise building to supporting Wolfgang Puck's kitchen. By Joanna R. Turpin
Leaking radiant panel valves had become an expensive maintenance problem for the Five Points Plaza building in Atlanta. Replacing the radiant ceiling system with a variable-air volume (vav) system could