Vigas de pino silvestre sometidas a flexión: influencia de defectos y singularidades = Wild pine beams subjected to bending: influence of defects and singularities

This paper presents an experimental study of the behavior of 18 timber beams for structural use of 155x75x1090mm dimensions. The origin of the wood is Valsaín sawmill. The tests were performed at the Laboratory of Construction Materials at the University School of Technical Architecture. The objective of this work is the analysis of flexural behavior of test pieces according to the defects and singularities, carrying out an analysis of their influence. 18 pieces have been tested, of which 9 were placed in a flat position, and the other 9 were placed in edge position. Before testing, the samples were classified according to UNE 56544 visual grading of sawn timber for structural use, determining the structural quality of each piece and the strength class. Singularities and defects found in each one of the pieces, moisture, weight and dimensions are measured and identified. The results of the analysis are presented in the conclusions, comparing the test data with the characteristics of the beams, determining the influence of the presence of defects and the characteristics of the timber beams with resistance in tests.Index Terms—