The purpose of this study is to compare the performance of column base joint with Nagahozosashi-komisen by the experiment and to examine the validity of the method of estimate considering the destruction of base. The results are as follows. The joint strength calculated from these results is close to two times of the strength prescribed in the notice. The specifications of one hozo and two komisens type and two hozos and two komisens type showed the strength beyond the hardware type (HD-10). The maximum strength of Nagahozosashi-komisen and the destruction form can be calculated in most cases by the new estimate method including the destruction pattern of base, hozo and komisen.
