This paper focusses seismic behavior of reinforced concrete columns with a gap, called the "Structural Slits" in this paper. The purpose to provite the Structural Slits is to mitigate the undesirable effects of spandrels on reinforced concrete frames, such as shear failure of columns during an earthquake. The reaction condition of a spandrel in the maximum lateral load of a column Q_<SLU> caused by [he crush of concrete at Structural Slits is cleared up by the analysis of a test results and the finite element analysis.
