Ventilation to a space is often specified by an engineer based on the purpose of the space. All too often the outside air requirements are established as an unmeasured cfm value; this ultimately ends ...

Life-safety dampers are critical fire-protection features of buildings. By protecting duct and air-transfer-opening penetrations through fire- and smoke-rated construction, they help to contain fire ...

A decision to replace more than 300 aging damper actuators forced Entergy to make a choice between pneumatic and electric actuator designs. At Entergy’s Independence Plant in Newark, Ark., two ...