Structural fire resistances of reinforced concrete interior/edge/corner columns

Tsung Jung Hsu, Wei Hsiang Lai, T. D. Lin

Research output: Contribution to conferencePaperpeer-review


All the existing fire test standards have the obvious weaknesses which the test column was subjected to a concentric load and 4-side heating. The fire endurance of such an experiment conceivably represents the fire rating of an interior column, but it has been used in assessing fire ratings of edge and corner columns in the same structural system. This paper utilized analytic empirical equations to calculate the failure loads of RC columns subjected to 1-, 2-, 3-, or 4-side heating. The calculated results show that the fire endurances of 2- and 3-side heating of rectangular concrete columns are somewhat shorter than that of a 4-side heating. Conceivably, a provision stated in the ACI 216R-89, “Columns larger than 12 in. (305 mm) diameter or 12 in. (305 mm) square are designed for 3 hr and 4 hr fire resistance classifications in most building codes in America.” deserves a further discussion.

Original languageEnglish
Publication statusPublished - 2009
Event7th Asia-Pacific Conference on Combustion, ASPACC 2009 - Taipei, Taiwan
Duration: 2009 May 242009 May 27


Conference7th Asia-Pacific Conference on Combustion, ASPACC 2009

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Chemical Engineering(all)


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