The earthquake on 30 September 2009with7,6 magnitude occurred in West Sumatera and it caused the damage to both physical public facilities and infrastructures. The education sectors suffered from structural damage to the school buildings. In order to establish of the new Indonesian Seismic Code, SNI03-1726-2012, it will affect to the performance of structures which was built before the establishment of the new seismic code, in which the building may not be adequate to with stand the working loads. In this study, the performance and structural strength of a two-story RC school building (SMAN3 Batusangkar) designed using previous seismic code (SNI03-1726-2002) and it was constructed before2009, was evaluated based on the new seismic code. The result of evaluation on the SMAN3 Batusangkar building shows that the building cannot resist the working loads applied to the structure, especially the earthquake loads, so the building structure needs to be retrofitted. Two retro fitted methods of the builiding were proposed in this study, they are using shear wall and steel bracing systems, which installed on the building frame with different locations. The addition of shear wall and steel bracing are very effective in strengthening the building structure, where the load-bearing capacity of the structure increased significantly and the building is able to resist all working loads.
Earthquake, Retrofit, Shear Wall, Steel Bracing, School Building
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