This standard specifies a method for the selection of pieces of wood based on density, which are to be used in determining the strength and stiffness properties of connections made with mechanical fasteners.. It is assumed the wood density is normally distributed any deviations shall be reported. NOTE It is emphasized that the wood density is only one of the properties can influence the strength of a joint. Other relevant properties are, for example, growth ring size and slope of grain. NOTE The standard applies for specimens of wood only