Fire class

Abstract: The invention discloses a method and a device of acquiring fire class information. The method includes acquiring fire scene images, identifying targets according to the acquired images, extracting images characteristics information according to the identified targets, acquiring targets actual parameter information according to the images characteristics information, confirming fire classes according to the targets actual parameter information and preset fire class division strategies, and outputting the confirmed fire class information. The method and the device of acquiring the fire class information can improve fire rescue efficiency.

Abstract: This study presents a fire risk analysis on the impact on fire safety of installation of a wooden facade to a suburb residential multistory building belonging to the fire class P1 defined in the National Building Code of Finland, which in practice means a concreteframed building. The risk analysis and the associated fire simulations are made using state-of-the-art techniques in the fire safety sciences and technology. The results of the study reveal that with respect to the overall fire safety of the concrete-framed residential multistory buildings, the role of the combustible wood as the facade material is insignificant: as is inevitable, the calculations bring out a small increment in the probabilities of fire spread from the room-of-fire-origin to the apartments above, but this increment is small as compared to the influence of several other factors which are not regulated by the Fire Regulations. In particular, the relatively small amount of wood on the facade that is likely to contribute to the external flaming would cause a much higher risk if it was installed as a lining inside the apartment-of-fire-origin. It is shown that the results obtained for the selected example building can be generalized to other buildings with reasonably similar characteristics.