Though suspended ceilings (above, right) remain the most popular ceiling system option, facility managers report that 17% of their total building square footage still features an open plenum ...

While suspended, lay-in ceilings have long been the norm in commercial design, the open-plenum ceiling has become trendy and economical, particularly in office and retail environments. However, ...

For the purpose of this article, the 2008 NEC and 2006 IMC codes were used as the basis for references. In today’s buildings, you can typically find a wide range of electronic equipment, including ...