Abstract
Several experiments were carried out to grasp burning behavior of wall using wooden interior material with sprinkler activating in unenclosed space. As for specimens, Japanese cedar plywood (24 mm thick) and lumber core plywood (12 mm thick) were selected. The size of specimens was 1820 mm wide and 2730 mm high. Regarding the experimental conditions, the incident heat flux onto the specimens by heat source was about 30 kW/m2 at the distance of 455 mm from the bottom of the specimens, and water supply rate was 80 L/min. As the result of the experiments, heat release rate reached about 300kW which was one of heat source after sprinkler activated. Char depths of the sprinkled specimens were less than 3mm.
