As the number of high-rise buildings in Korea continues to increase, interest in the stack effect is increasing. In particular, in the event of a fire, as the indoor temperature increases, there is the problem that the stack effect increases. Accordingly, it is necessary to analyze the stack effect resulting from temperature change during a fire. In this study, by using CONTAMW simulation, the opening was opened or closed. In the case where the temperature of the fire room rises to the temperature of the growth period caused by a fire, the pressure difference in the building according to the temperature increase during a fire was confirmed. As a result, depending on whether the opening was opened or closed, the pressure difference was uniform for each layer, ranging from 0 to 100 Pa when opened. However, assuming a fire room, the pressure in the fire layer increased to approximately 250 Pa, and it was confirmed that the pressure difference varied greatly for each floor.

Urban living spaces with piloti structures are at high risk for deregulation of building protocols. Recent fire case investigation results have shown the path of the fire from the initial ignition point to the exterior material via combustible ceiling materials; thus, preventing the spread of the fire through the ceiling material is a priority. Accordingly, investigations were conducted on the ceiling materials used in piloti structures, and it was confirmed that SMC, aluminum, DMC, and gypsum board were the main components, with the SMC ceiling materials accounting for more than 70% of the composition. Cone calorimeter tests were performed on these ceiling materials, and the heat fluxes of SMC, aluminum, DMC, and gypsum board were determined to be 217.10, 15.07, 1.78, and 41.92 kW/m², respectively.

No abstract

In Korea, considering that the accuracy of fire scenario evaluation is reduced by performance-based design, it is assumed that the sprinkler does not operate. In other countries, the design continues to be researched considering the operation probability of the sprinkler. In particular, the operation probability that divides the effect after operation is analyzed. Therefore, the operation probability was analyzed by considering the effect of sprinkler operation using domestic fire statistics. As a result, it was found that the probability of successful operation for fire extinguishment was 44%, the success of suppression was 32%, and failure to operate was 24%. As a result of a comparison with data from other countries, the probability of operating, 76%, was lower than that of studies from other countries. When comparing the probability results for successful fire extinguishment, success of suppression, and failure to operate, it was confirmed that the probability of successful suppression was slightly different.