The life of the nailed joints that are used at shear walls of wooden houses was predicted by using the eyring model. In this study, the stress factors for the eyring model were the temperature of surroundings and equilibrium moisture content (EMC) of the wood in which nails were driven. And the constants of the eyring model were decided by accelerated test. The temperature and the relative humidity inside of the walls of wooden houses were measured, and the EMC of the wood were calculated.
By application of the eyring model, it was calculated that the life of the nails without surface treatment were about 230-370 years in the walls of wooden houses.
