Abstract

Disaster mitigation is an important issue that must be addressed. School
buildings have two significant functions in post-disaster scenario, namely: educational and
emergency. The failure of structures disrupted the operation particularly on the postdisaster
functions of school buildings. A two-level prioritization matrix is used to rank the
importance of each building inside the Pangasinan State University-Urdaneta City Campus
in the Philippines. Seismic risk scores are plotted against the Post-disaster Functional Asset
Value (PDV) in x and y axis, respectively to identify the most vulnerable and important
buildings. In this method, the uses of space of the structure and its structural vulnerability
using rapid visual screening are the main factors in categorizing the eleven (11) buildings in
the study. The two target structures, namely: Engineering Building 2 and four-story
Administration Building are old and newly constructed buildings, respectively. These
structures are essential in post-disaster activities. Seismic performance evaluation of these
two buildings is conducted by following the concept of Japan Building Disaster Prevention
Association (JBDPA) Standard. The JBDPA Standard for seismic evaluation of existing
reinforced concrete buildings is a detailed inspection method where the actual capacity of
the structures to resist the seismic force can be determined. It focuses on the reinforced
concrete structures with the concrete wall. Therefore, the strength index of masonry infill
walls especially those with openings were determined from the equations of various
experts. The proposed Usage index was used in calculating the seismic demand index of
structure, Iso. The result of the second level screening specified that only the first floor of
the old and new buildings’ longitudinal axis need to be strengthened. The behaviors of the
structures before and after retrofitting were analyzed in Structural Earthquake Response
Analysis (STERA) 3D. Retrofitting the two vulnerable buildings by installing concrete
shear walls resulted into an upgraded structural strength and denotes an earthquakeresistant
structure. JBDPA Standard was found useful in the Philippines since many
existing reinforced concrete school buildings with masonry infill wall need further
evaluation.