The Structural Engineer > Archive > Volume 84 (2006) > Issues > Issue 11 > Tsunami - planning and design for disaster mitigation
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Tsunami - planning and design for disaster mitigation

This paper starts by reporting on three different types of structural failure observed in various structures during the tsunami of December 2004, namely sliding, overturning and undermining through scouring. It then describes some guidelines that have been drawn up for low cost single storey buildings at risk from the natural disasters of coastal flooding, cyclones and earthquakes, covering zoning and siting issues in addition to building planning and structural recommendations. Finally, the paper presents engineering calculations for three case studies, namely a school building that has lost a corner column due to undermining, the same school building subjected to tsunami loading and a boundary wall experiencing a lateral water load. These calculations help to identify strategies for designing efficiently against the very large effects of tsunamis. Professor W .P. S. Dias, PhD, DIC, MIStructE H. M. Y. C. Mallikarachchi, BSc (Eng) Department of Civil Engineering, University of Moratuwa, Moratuwa, Sri Lanka

Author(s): Dias, W P S;Mallikarachchi, H M Y C

Keywords: tsunamis;sri lanka;waves;structures;performance;planning;recommendations;case studies;schools