How To Earthquake-Proof Our Buildings

Most of Indonesia territory is located in areas with middle-high to high earthquake risk levels. In 2018 alone, there have been a series of destructive earthquakes, namely in Lombok in July and August 2018, with a magnitude of up to 7 Mw, and in Palu, Sulawesi, in September 2018, with a magnitude of 7.4 Mw.

These earthquakes have caused the collapse of various physical facilities and infrastructure—such as residences, school buildings, houses of worship, and health centres or hospitals—as well as massive casualties and material losses.

Therefore, it is imperative for each building structure in Indonesia to be earthquake-resistant, especially those located in areas with medium to high seismic risk levels, so that in the event of an earthquake, the building structure can survive and protect its inhabitants. Generally, damage of building structures due to earthquake are due to the following reasons:

1.Building systems used are not in accordance with the level of seismic risk
2. Structural components and reinforcement details are inadequately designed
3. Material quality and construction practices are not good
4. Supervision and quality control during construction are not implemented properly

Impact of severe damage during the Lombok earthquake in 2018

The regulation on earthquake-resistant structural design for buildings and non-buildings, SNI 1726 has undergone several revisions along with the increasing numbers of earthquake data and the advancement in the analysis and design.

Director of Research Center for Disaster Mitigation, Institut Teknologi Bandung (ITB)

Iswandi is also a professor in Concrete Materials and Structures at the Faculty of Civil and Environmental Engineering, ITB. He is also a registered professional engineer of HAKI. He graduated with a degree in Civil Engineering in 1987 from ITB, and obtained a Master of Applied Science in Civil Engineering (Structural Engineering) from the University of Toronto, Canada in 1990, and a Doctor of Philosophy in Civil Engineering (Structural/Material Engineering) in 1994.

His research interests are in concrete materials and structures, earthquake-resistant reinforced concrete structures, corrosion and durability of concrete structures and structural assessment, as well as repair and retrofit of bridge structures. He has published many papers in international and national journals and served as keynote speaker and editor in international and national conferences. He also wrote several technical books in his field, including “Structural Design of Earthquake Resistant Reinforced Concrete Buildings”, which was co-written with his colleague, Hendrik F.

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