Comparative Analysis of Korean and Japanese Standards for Natural Smoke Ventilation in Logistic Warehouses

Abstract

This study investigated the design methodologies outlined in Korean and Japanese legislation, along with Japanese design guidelines, pertaining to natural smoke ventilation systems in logistics warehouses. Subsequently, we determined the effective area of the smoke exhaust system based on the combustible materials and building characteristics. Our findings indicated that the calculated effective area per the statutory standards of both nations was 10 m<sup>2</sup> and 20 m<sup>2</sup>, respectively. According to Japanese guidelines, the space accommodating the CUP ranged from 24.71 m<sup>2</sup> to 13.76 m<sup>2</sup> for floor heights between 7 to 16 m, while the space accommodating CEP ranged from 41.83 m<sup>2</sup> to 22.54 m<sup>2</sup>. Analyzing the quantity of smoke emitted through the calculated effective area, we observed that, when applying domestic legal standards, the smoke exhaust rate consistently remained lower than the plume flow rate. Conversely, under the Japanese standard, the smoke emission efficiency of the CUP loading warehouse surpassed that of smoke emission from 9 m to 16 m, while it was lower from 7 m to 8 m. Notably, the smoke exhaust rate consistently exceeded the generated smoke quantity in all instances within the effective area governed by the guidelines.