Abstract
In performance-based structural fire safety design, various calculation models are used to predict the structural behaviors of building elements exposed to fire. Although many of such calculation models require material properties of building elements as input data, it is often difficult, technically and economically, to obtain such material properties. A potential and practicable alternative is to make use a method to translate the fire duration in arbitrary compartment fire conditions to the equivalent fire resistance time of the existing standard fire furnace testing. This paper aims to develop a method for translating the duration of ventilation-controlled compartment fires to equivalent fire resistance time in the standard fire test. The method includes a simple calculation model integrating the radiation heat loss through window openings as well as the heat losses to compartment boundary and fuel and by ventilation. The translation formula is based on the premise that fire-resistant performance is assessed by prescribed temperature criteria. Example calculation results for equivalent fire resistance time are demonstrated. By this translation method, the fire resistance capability of building elements can be assessed without requiring their thermal properties.
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Abbreviations
- A :
-
Area (m2)
- C :
-
Constant
- c :
-
Specific heat of solid (kJ/kg)
- c p :
-
Specific heat at constant pressure of air (kJ/kg)
- H :
-
Height (m)
- h :
-
Heat transfer coefficient (kW/m2 K)
- I :
-
Thermal inertia (kWs1/2/m K)
- k :
-
Thermal conductivity (kW/m K)
- m :
-
Mass flow rate (kg/s)
- m b :
-
Mass burning rate (kg/s)
- Q :
-
Rate of heat release, transfer (kW)
- q :
-
Heat flux (kW/m2)
- T :
-
Temperature (K)
- t :
-
Time (s, min)
- x :
-
Distance from surface into solid (m)
- α :
-
Thermal diffusivity [=k/cρ] (m2/s)
- Φ:
-
Factor defined by Eq. 5
- ρ :
-
Density (kg/m3)
- τ :
-
Fire resistance time (s, min)
- a:
-
Air
- b:
-
Compartment boundary
- e:
-
Building element
- r:
-
Radiation
- T:
-
Total (area) of compartment boundary
- w:
-
Window
- 0:
-
Initial, ambient
References
ISO 834. (1999). Fire resistance tests-elements of building construction. Geneva, Switzerland: ISO.
Ingberg, S. H. (1928). Tests of severity of building fires. Quarterly of the National Fire Protection Association, 22(1), 43–61.
McCaffrey, B. J., Quintiere, J. Q., & Harkleroad, M. F. (1981). Estimating room temperatures and the likelihood of flashover using fire test data correlations. Fire Technology, 17, 98–119. https://doi.org/10.1007/BF02479583.
Huggett, C. (1980). Estimation of rate of heat release by means of oxygen consumption method. Fire and Materials, 4(20).
Nakaya, I., Tanaka, T., & Yoshida, M. (1986). Doorway flow induced by a propane fire. Fire Safety Journal, 10, 185–195.
Kawagoe, K., & Sekine, T. (1954). Estimation of fire temperature curve in concrete buildings with different thermal conductivity of wall. Bulletin of Japan Association for Fire Science and Engineering, 3(2) (in Japanese).
Walton, W. D., & Thomas, P. H. (2008) Estimating temperatures in compartment fires. In SFPE handbook (4th ed., pp. 3–207).
Thomas, P. H., & Nilsson, L. (1973). Fully developed compartment fires—New correlations of burning rates. FRN 979. UK: Fire Research Station.
Bohm, B. (1977). Fully developed polyethylene and wood compartment fires with application to structural design. Technical University of Denmark.
The SFPE handbook of fire protection engineering (4th ed., Chap. 2, pp. 1–37). SFPE.
Sato, M., Tanaka, T., & Wakamatsu, T. (1996–97). Simple formula for ventilation—controlled fire temperatures. Journal of Applied Fire Science, 6(3), 269–290.
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Tanaka, T., Mizukami, T. (2020). A Method for Translating Compartment Fire Durations to Equivalent Fire Resistance Time at Standard Fire Test Condition. In: Wu, GY., Tsai, KC., Chow, W.K. (eds) The Proceedings of 11th Asia-Oceania Symposium on Fire Science and Technology. AOSFST 2018. Springer, Singapore. https://doi.org/10.1007/978-981-32-9139-3_38
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DOI: https://doi.org/10.1007/978-981-32-9139-3_38
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