Seismic Vulnerability Assessment of Non-Structural Components - Methodology, Implementation Approach and Impact Assessment in South and Central Asia

Abstract

ABSTRACT Most frequently, the South and Central Asia region witnesses small to moderate magnitude earthquakes. In the past, this situation has resulted in massive property damage and losses apart from unaccounted operational dysfunction and human injuries and losses. There is a dire need to understand the underlying factors for these losses and prepare for the continuity of facility operations with loss reduction. To understand these requirements, Aga Khan Development Network (AKDN) carried out a Disaster Risk Management Initiative programme (now part of Aga Khan Agency for Habitat) across South and Central Asia between 2011 and 2016. One of the key outcomes of the initiative was to develop a non-structural hazard mitigation methodology, which should facilitate the assessment of all AKDN facilities for their safety and continuity of operations. The present manuscript intends to discuss the systematic approach in conducting Rapid Visual Screening Surveys following the AKDN methodology to generate a priority list of structures considered for mitigation planning. In doing so, the manuscript puts focus on the detailed non-structural vulnerability assessment, which results in incremental non-structural hazard mitigation including housekeeping, bracing and anchoring Mechanical, Electrical and Plumbing (MEP) and Fixtures, Furniture and Equipment (FFEs), as well as architectural retrofitting. Various challenges are encountered during the mitigation plan implementation. So far, the developed methodology is tested on more than 5,500 individual structures. The criteria for effective mitigation implementation include safety, aesthetics, time, economy, and functionality. Another dimension of this manuscript is to discuss about implementation monitoring and how it has reduced the risk.