Determination of the strength properties of wood in the inspection of buildings and structures: methods, problems and solutions

The paper considers the ways and methods of determining strength wood according to current norms rules. required number samples are tested compared with characteristics in SP 64.13330.2020 “Wood structures”. It is concluded that it impossible use obtained results for calculations building structures, due lack coefficients norms, taking into account vices scale factor. existing nondestructive control were analyzed. tests carried out dependences between speed sound along across fibers plotted. conclusions about possibility using ultrasonic method determine examination buildings made.