To establish rational seismic design method on wood frame constructions, it is important that the relation between seismic input energy and maximum response displacement is made clear. In this paper, a concept of probability distribution of energy input ratio on single-mass system is introduced, and the relation above mentioned when input motions are stationary white noise is examined. Suceedingly, a definite relation between seismic motions and stationary white noise is supposed, and the prediction method on seismic maximum response displasement is considered. As a result, it is recognized that predicted values are nearly agree with the upper bound of analyzed values.
