Civil Engineering Association

Performance of buildings during the 2001 Bhuj earthquake

Abstract: The performance of buildings during the January 26, 2001, earthquake in the Kachchh region of the province
of Gujarat in India is discussed. A majority of the buildings in the earthquake region were either of load-bearing masonry
or reinforced concrete framed structure. Most of the masonry buildings were built with random or coursed stone
walls without any reinforcement and heavy clay tile roofing supported on wooden logs. A large number of such buildings
collapsed leading to widespread destruction and loss of life. Many reinforced concrete frame buildings had infill
masonry walls except in the first storey, which was reserved for parking. As would be expected, the open first storey
suffered severe damage or collapsed. Observations of failures confirmed the vulnerability of some structural details that
are known to lead to distress. However, an important observation to come out of the earthquake was that masonry
infills, even when not tied to the surrounding frame, could save the building from collapse, provided such infills are
uniformly distributed throughout the height so that abrupt changes in stiffness and strength did not occur.

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