Evaluation of the fire endurance of mechanically graded timber in bending

摘要: AbstractThis study examined the performance of mechanically graded timber in bending when exposed to fire at various load ratios. The test specimens were 150 pieces, each with dimensions 60 × 120 3500mm. modulus elasticity (MOE) was measured, and among them selected formulate prediction equation for MOE rupture (MOR), which used predict remaining 90 specimens. These tested under exposure using three-point loading 11.1%, 16.7%, 33.3%, 66.7%, 83.3% ultimate load. Using timber, means acknowledging actual strength member, permits fairly precise application targeted design This research confirmed that has following tendencies: same ratio, time failure is independent class, and, any critical dependent on class. obtained reduced cross section method conformed those calculated based Eurocode 5. Following findings, can be applied obtain taking into account attack.