Earthquake-proof homes withstand 7.7 magnitude tremor in Indonesia

Three prototype houses designed to withstand earthquakes have proven their resilience, remaining structurally sound after a powerful 7.7 magnitude earthquake struck Nusa Tenggara Timur, Indonesia. The prototype homes, developed by the National Research and Innovation Agency (BRIN), were built in 2021 and 2022 as part of a study on earthquake-resistant construction.

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These houses use earthquake-resistant construction technology designed for disaster-prone areas like Nusa Tenggara Timur. The results show this design can protect the structure and, most importantly, its occupants.

Engineers from BRIN stated that these houses are specifically engineered for high-risk seismic zones like Nusa Tenggara Timur. The design incorporates seismic technology featuring rubber bearings, developed by BRIN's Composite and Biomaterial Research Center. This technology effectively separates the upper and lower parts of the building, absorbing shear forces during seismic events and reducing the vibrations transmitted to the structure.

Initial field inspections revealed no structural cracks in the walls, columns, or foundations of the three houses. Damage was limited to cosmetic issues, such as dislodged or broken bathroom tiles. Despite the positive field results, BRIN will conduct further technical verification through laboratory tests using cyclic testing methods according to Indonesian standards, scheduled for 2026.

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The rubber bearing-based seismic technology separates the upper and lower parts of the building, helping to absorb shear forces during an earthquake and reduce vibrations transmitted to the structure.

The earthquake-resistant houses also employ a modular concept, making the innovation a potential model for recovery and reconstruction efforts in disaster-prone areas. BRIN is promoting the wider use of this earthquake-resilient housing model not only in Nusa Tenggara Timur but also in other earthquake-vulnerable regions across Indonesia, aiming to enhance residential safety and reduce building damage risks.

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The major earthquake that struck Nusa Tenggara Timur on August 15 served as a field test for this technology.