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RISKS OF SEISMIC ACTIVITIES ON BUILT ENVIRONMENT IN NIGERIA

Akpabot, Akpabot Ifiok and Ede, A. N. and Olofinnade, O. M. and Bamigboye, Gideon (2017) RISKS OF SEISMIC ACTIVITIES ON BUILT ENVIRONMENT IN NIGERIA. In: Proceedings of the 2nd International Conference of Engineering for a Sustainable World, July 3-7, 2017, Ota, Nigeria.

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Abstract

Every building is designed to be safe and meet certain needs in order to prevent collapse. Factors leading to building collapse could be natural or man-made. Results of collapse of buildings are numerous; they include death, disability of victims, destruction of properties, economic losses, etc. Until recently, Nigeria was believed to be aseismic due its distance away from major earthquake zones. However, modern seismic activities have led to the prediction of a major earthquake occurrence in Nigeria in the future. This study seeks to estimate the risks and impact of seismic hazard on the built environment in Lagos State, Nigeria. Assuming a uniform seismic intensity measure for the study area, a model is created that estimates the number of casualties and built area that would be affected by earthquakes of different ground motions. Monte Carlo simulation method is used in MATLAB software to draw random data of building area, occupancy limits, construction quality and failure probability for the computational analysis. The results showed that an average seismic intensity measure of 0.4g will affect between 1000-1060 km2 of building area. At the same intensity, between 6.5-6.9 million of a total population of 21 million people residing in Lagos State will be affected. These huge losses therefore call for urgent mitigating activities such as the design and construction of seismic resistant buildings to reduce risks of damages when earthquake occur

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Reinforced-concrete, building collapse, seismic-risks, built area, ground motion
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering, Science and Mathematics > School of Civil Engineering and the Environment
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 31 Aug 2017 07:31
Last Modified: 31 Aug 2017 07:31
URI: http://eprints.covenantuniversity.edu.ng/id/eprint/9019

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