Repair Methods Indication for a Timber Coverage Structure Located in Sinop City - Brazil

Abstract

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.

Epoxy mortar timber beam upgrading

“…Wood is a natural and renewable source material which requires low energy consumption in its processing when compared with the production of conventional building materials, such as steel and concrete (Pinheiro et al 2016). The use of timber in structural applications has acquired relevant importance over the years, due to its inherent characteristics related to density, stiffness and final aesthetic value (Pigozzo et al 2016).…”

“…In general, a chemical treatment has been applied upon the structural timber surfaces in order to avoid moisture absorption, insect or fungus attacks. Early deterioration and lack of maintenance can reduce the structural function of the wood, making necessary its replacement or rehabilitation based on a technical or traditional repair and/or reinforcement (Pigozzo et al 2016; Pinheiro et al 2016).…”