Brazil has large forest vocation in construction, however, the difficulty in obtaining adequately trained professionals associated with lack of knowledge about the physical and mechanical properties, no appropriate treatment against insects and fungi, among others, confirm the reduction of durability materials and consequently the projected structure. In order to contribute effectively in reducing disease and spread the application of concepts of prevention methods to timber structures by professionals of construction in Brazil and other countries, this research aimed, through a case study carried out in a cover structure (made with Itaúba wood specie -Mezilaurusitaub meisn) located in the Midwestern region of Brazil, Mato Grosso, in the city of Sinop (11°50'5,5 "S; 55°30'4,2" W), identify pathologies present in the structure, identify possible causes and point out the most appropriate methods for repair. The cover structure has the following characteristics: Ceramic roof; truss structure of Howe type with 23° inclination; dimensions plant with 14m in width and length of 32,5m; spacing between trusses 2.5m; strips with dimensions of 2,5×5,0cm 2 rafters: 5,0×6,0cm 2 ; purlins: 5,0×15,0cm 2 ; diagonal: 5,0×10,0cm 2 ; amounts: 2 pieces with 2,5×15,0cm 2 ; upper and lower flanges: 5,0×15,0cm 2 and steel joints made with through bolts. Thus, it is expected that in the near future, this study effectively contribute to the reduction of pathologies, and spread the application of concepts and prevention methods to repair the structures, contributing positively by spreading the use of wood in the design of structures.
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