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West Sumatra Province, especially Padang City, is an area prone to the earthquake that cannot only trigger tsunami but also liquefaction disaster. In order to face the disaster, Padang city government planned to build as many as shelters as vertical evacuation buildings. One of them is Nurul Haq shelter located in a coastal area that has liquefaction potential. A structural evaluation of the shelter was conducted to check the capacity of the existing shelter structure in resisting the working loads. From the result of the soil evaluation, it was found that the soil in the shelter location has high liquefaction potential. Therefore, the shelter structure is analyzed using the specific response spectrum of the earthquake loads considering soil liquefaction, which is 1.5 higher than those on non-soil liquefaction. The tsunami loads were calculated based on FEMA P-646. The analysis result shows that the shelter building is not capable of resisting the loads applied on the structure, in which the elements of the beams and foundations do not have enough capacity to resist the working loads, especially earthquake and tsunami loads. Furthermore, the shelter building should be retrofitted before being used as a vertical evacuation building.

STRUCTURAL EVALUATION OF NURUL HAQ SHELTER BUILDING CONSTRUCTED ON LIQUEFACTION PRONE AREA IN PADANG CITY - INDONESIA