Bulletin of Japan Association for Fire Science and Engineering

Paper

An elementary study of capacities of water supply points

Kenjiro YASUNO

1967 Volume 17 Issue 1 Pages 1-9
Published: 1967
Released on J-STAGE: July 19, 2013

DOIhttps://doi.org/10.11196/kasai.17.1

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In Japan, it seems very difficult in near future to realize an ideal city filled with incombustible buildings.
In this paper, capacities and distributions of water supply points in Japan are reported,
1. Theories of distributions of water supply points.
2. Capacities of water supply points.

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Study the Nature of Highrise Fires, Report I. (Analytical Approach to Causes)

Kojiro KAMEI

1967 Volume 17 Issue 1 Pages 11-15
Published: 1967
Released on J-STAGE: July 19, 2013

DOIhttps://doi.org/10.11196/kasai.17.11

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This study intends to make clear the nature of highrise-fires by analytical approach to the causes with reference to data of 28 cases of actual research.
The author was able to find the following facts :
1) Origins of fire-outbreak (or original fire sources) were almost the same as in the case of general building fires ;
2) Mediums which contributed to fire-spread in highrise-fires were quite differ from general building fires.
For instance, vaporized gas from floor cleaner and combustible insulator covering air-conditioning ducts caught fire by sparks or arcs used for welding or combination structures ; carpet of banquet hall or coats in the cloakroom of a hotel caught fire by embers of tobacco or tobacco ashes ; and settings and drop-curtains in the stage caught fire by sparks or flames used for the play at the theater, etc.

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[title in Japanese]

P.H. THOMAS, Kunio KAWAGOE, Takao WAKAMATSU

1967 Volume 17 Issue 1 Pages 17-24
Published: 1967
Released on J-STAGE: July 19, 2013

DOIhttps://doi.org/10.11196/kasai.17.17

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[in Japanese]

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How to Select Safety Zone in Tokyo in Case of Conflagration (Specially for Heat Radiation)

Minoru HAMADA

1967 Volume 17 Issue 1 Pages 25-29
Published: 1967
Released on J-STAGE: July 19, 2013

DOIhttps://doi.org/10.11196/kasai.17.25

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In 1923, Tokyo was suffered from a great earthquake, and about 59,000 people died, most of them by conflagration. This paper gives the conditions for the safety zone in case of conflagration, specially for heat radiation.

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Characterization on the Mode of the Surface Combustion of Organic Building Materials in Madison-type Small Tunnel Furnace (I). Note on the Model of the Flame-Spread Mechanism in Madison Test-Furnace and Factors Dominating the Flame-Spread Patterns and the Evolution of the Smoke.

Takashi HANDA, Masayuki NAKADA, Hiroaki SUZUKI, Jyunko HIGETA, Koji SU ...

1967 Volume 17 Issue 1 Pages 31-41
Published: 1967
Released on J-STAGE: July 19, 2013

DOIhttps://doi.org/10.11196/kasai.17.31

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Studies have been conducted so far on the mode of the surface flame-spread concerning the organic building materials in Madison-type tunnel furnace to characterize the flame-spread index for the classification of organic building materials into combustible and fire-retardant ones. Following facts has been observed empirically that the velocity of the transfer of the gravity of temperature peak on the test-samples has been approximately the same with the flame-spread velocity. Theoretical analysis has been pursued in terms of energy-equation on the basis of this fact by replacing flame-spread phenomena into temperature vs. time relation at given points on test-sample. Temperature-distribution in the furnace during the test runs has been concluded to be the most significant factor which affects the flame-spread and smoke-density evolved has been referred to as the function of surface temperature on the test-samples. Secondly, heat of combustion of samples or their activation-energies for the thermal decomposition, thermal conductivities and their densities are expected to be the important factors on the basis of the above equation.

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On the Heat Transmissions relating to the Fire Endurance Test

Takao WAKAMATSU

1967 Volume 17 Issue 1 Pages 43-55
Published: 1967
Released on J-STAGE: July 19, 2013

DOIhttps://doi.org/10.11196/kasai.17.43

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On the purpose for theoretical fire endurance rating of building members and for theoretical heating property rating of furnace, it is important to know the heat transmissions relating to the fire endurance test. This paper deals with the following three kinds of heat transmissions.
(1) the transmission on exposed surfaces of the member ; - heating property of furnace is largely depended on this transmission -
(2) the transmission on boundary faces of hollow in the member ; - this decides the adiabatic properties of the hollow -
(3) the transmission on unexposed surfaces or colder one of the member ; - this decides the cooling properties on the surfaces -
Remaining some incomplete branches, the laws of the mechanisms for these transmissions have been already established fairly well on the whole. Practically applying the laws, the author attempts to analyze the heat transmissions relating to the fire test, mainly as to heat transfer coefficients, and compares those with results of experiments.

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