Assessment of damaged timber structures using proof load test – Experience from case studies

•Advanced Model Based Assessment using proof load test was adopted.•Two case studies of damaged timber structures were analyzed.•For structural analysis Macedonian standards and EN1995 were used.•Partial safety factor for the material γM was defined by reliability verification.•The structures behave satisfactory according to both standards. In this paper assessment of damaged timber structures using proof load test is given, which is mandatory according to Macedonian standards. Two types of structures were analyzed in the paper: Glued laminated timber structure, Cambered beam span of L=24.00m and Glued Laminated pedestrian timber bridge, two-hinged arch, span of L=26.00m plus two simple supported beams span of L=12.5m each. The results were also used for reliability verification to define partial safety factor for material for ultimate limit state and serviceability limit state, according to Eurocodes EN1990 and EN1995.