In order to apply the results of microtremor measurements and construction site surveys to seismic diagnosis of contemporary timber houses, we investigate the relation between dynamic characteristics and seismic diagnosis. The main results obtained from these investigations are as follows.
Timber houses having large translational frequency and damping coefficient, are estimated high quality from the viewpoint of seismic diagnosis. The torsional angle between upper and lower floors, and the torsional frequency of timber houses have a slight correlation with the grade of seismic diagnosis.
