Abstract
For the seismic diagnosis of the existing wooden house, usually the general diagnosis or the detailed diagnosis of type 1 is used. The general diagnosis is the screening that the seismic retrofit are needed or not, and it’s calculation is very simple. Therefore, the seismic capacity grade of the general diagnosis should be controlled to become smaller than the one of the detailed diagnosis of type 1. However, as a matter of fact, it often happens that the seismic capacity grades of the general diagnosis becomes larger than the one of the detailed diagnosis of type 1. The reason of this phenomenon can be considered that the strength of walls except earthquake resistant walls are often evaluated larger than that of actual strength by the general diagnosis.
Therefore, we propose modified calculation coefficients of the general diagnosis on the strength of wall except earthquake resistant wall based on the seismic diagnosis of the existing wooden houses. Adopting this method, we can get more accurate seismic capacity grade of the general diagnosis.
