An Experimental Study on 2 Hours Fire Resistance Performance of Load Bearing Walls Used in Modular Buildings

To higher the buildings, fire resistance performance is needed following the purposes and dimensions of the buildings. Especially, two hours fire resistance performance should be satisfied for the buildings above the 4th floor and under the 12th floor. In the case of load bearing walls with steel stud, two hours fire resistance performance have never been recognized in Korea. This study was conducted to investigate two hours fire resistance performance of load bearing walls with steel stud in structural elements of modular buildings. Test specimens in this study were redesigned in the basis of typical load bearing walls used in Europe and North America. The load bearing walls ensuring two hours fire resistance performance were suggested from the test results of this study. The load bearing walls with fireproof board of 45mm thickness secured two hours fire resistance performance in this study.