Two-dimensional analysis vulnerability assessment of public secondary buildings in District II of Manila

Largely-spaced facilities such as school buildings are commonly used as evacuation areas for people and their families whose homes were afflicted by a strong earthquake or a devastating typhoon. In order to ensure the safety of the public, the government uses structural assessment techniques to monitor the structural integrity of these facilities periodically. Presented in this paper are two parameters used to measure the building´s ability to withstand the maximum expected earthquake magnitude in areas under study. They are the Rapid Visual Screening (RVS) of Federal Emergency Management Agency adopted by the Department of Public Works and Highways, and the Seismic Risk Evaluation of Housing and Building National Research Center (HBRC), is not a common guideline in the Philippines but already adopted in Egypt and the United States of America. During the entirety of this work, the authors gathered the data needed in this study by assessing the structures according to RVS and HBRC Seismic Risk Evaluation. Priority listings were created using these two methodologies. From the findings, schools were ranked according to their risk level by plotting on a two-dimensional plane; the RVS as the abscissa and HBRC as the ordinate. Seven out of twenty-one or 33.33% of the school buildings were found to be at low risk level while the remaining 66.67% were classified as high risk. This study summarizes the findings of the gathered data about the risk level of public school buildings in District 2 of Manila which can serve as reference for local and national government in defining mitigating measures as prevention for risk involved.