Non-destructive assessment, full-scale load-carrying tests and local interventions on two historic timber collar roof trusses

摘要

Retrofitting of existing timber roofs may be necessary due to new needs of use or due to the historical significance of the structure. In both cases, a thorough understanding of the existing structure must be available in order to decide the best intervention method. This understanding requires both the assessment of the present state of conservation of the structure, as well as its original and present structural performance.