The study of the cause of the collapse for the Younggwilu (Pavilion) in Jagyeseowon (Traditional Private School)

In general, the horizontal section of the beam element in traditional wooden structures has a very high safety factor as the area is comparably big so it is very rare for the building to collapse in a sudden. Recently the Younggwilu(Pavilion) in Jagyeseowon(Traditional Private School) was collapsed from its natural state without any external load factors like the earthquake or typhoon. This study is analyzing the present state of the collapsed Younggwilu building and examining the structural strength of the upper structure and roof load. Structural analysis of the building was undertaken with the collected data of the investigation for the before and after state of the building and analysis of the collapse condition. The cause of collapse could be indicated as supporting failure of the front right column and the instability of the upper roof load distribution. This research could be provided as basic data for the structural stability of