Guide for Determining the Fire Endurance of Concrete Elements
American Concrete Institute -ACI
Jan 1, 1989
Building codes require that the resistance to fire be considered for most buildings. The type of occupancy, the size of building and its position on the property all affect the fire resistance ratings required of various building elements.
Higher fire resistance ratings often result in lower fire insurance rates, because insurance companies are concerned about fire resistance.
For the most part, fire resistance ratings have been determined by the results of standard fire tests. More recently, rational design methods have been developed which allow the fire resistance to be determined by calculations (Anderberg 1978; Becker and Bresler 1977; Bresler January 1976; Bresler September 1976; Bresler 198.5; Ehm and van Postel 1967; Gustaferro 1973; Gustaferro 1976; Gustaferro and Martin 1977; lding et al. 1977; Iding and Bresler 1984; Lie and Harmathy 1972; Nizamuddin and Bresler 1979; Pettersson 1976). The rational design concept makes use of study and research into the properties of materials at high temperatures, the behavior of structures during a fire, and basic structural engineering principles.
This guide illustrates the application of the structural engineering principles and information on properties of materials to determine the fire resistance of concrete construction.
Generally, the information in the Guide is applicable to flat slab floors and rectangular beams. Additional materials and techniques are required for applying the design procedure given in the Guide for structural members that have other geometries.