- Author
- Ellingwood, B. | Shaver, J.
- Title
- Fire Effects on Reinforced Concrete Members. Final Report.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Report
- NBS TN 985, August 1979, 42 p.
- Distribution
- Available from National Technical Information Service
- Keywords
- fire load | fire tests | temperature | thermal analysis | thermal diffusivity | fire ratings
- Abstract
- Fire ratings for structural assemblies in the U. S. are currently measured by endurance of or temperature rise in comonents subjected to a standard test. Analytical procedures how considerable promise for alleviating the extensive testing required, and for placing fire resistant structural design on a limit states basis. In this study, thermal and structural analyses for reinforced concrete members are validated using experimental data. Temperature distributions computed in reinforced concrete members for several realistic fire exposures are examined and compared to the distributions measured in a standard test. Parameter studies show the effect of typical variations in thermal diffusivity, emissivity and conductivity. Structural responses for the different fire exposures are also briefly compared.