This precast system consists with precast columns, precast beams and precast shear wall panels that are combined between upper and lower beams using horizontal dry joints by prestressing. This panels are separated the precast columns. In conseguence, the system provides easy exchange of damaged panels in case of earthquake. To confirm the excution of this system, various models are tested whether the connection of prestressing bars exist or not, the windows of jacking space exist or not, the frames are damaged or not. The results shows that this system can be excuted with an ordinary management, and the damaged panels can be easily exchanged for new panels by adapting to the relative story displacement. Most of prestress transfered to the precast shear panels and didn't effect to the frame at the excution of new frame and the exchange of panels.
