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International Letters of Chemistry, Physics and Astronomy
Volume 52
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Design Methods of Lightning Protection Systems by Keeping Aesthetic View of Architecturally Complex Structures

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Abstract:

The primary focus of this study is to understand design methods of appropriate lightning protection systems (LPS) for architecturally complex structures without any harmful affect to its aesthetic view. Two sites selected for this study consisting of architecturally complex structures named ‘Kuruluduwa Suspension Foot Bridge’ located in Matara, Sri Lanka (6.05No/80.20Eo) and ‘National Planetarium Building’ located in Colombo, Sri Lanka (6.95No/79.85Eo). Average lightning flash density for these two locations were 2.5 flyr-1km-2 and 2.3 flyr-1km-2 respectively. Different design methods were used to identify the most suitable LPS, based on the area of protection afforded by each one. After analyzing those two sites, it was able to introduce proper LPS for both sites by keeping architectural design as it is with no change for its aesthetic view. This study shows possibility of achieving this challenging task even for already constructed structures with present LPS standards successfully. When designing the architectural part of the structure, the architect should concern both on the visual appearance and the LPS. Creating a miniature model of the structure would be another suggestion which could be used to find the actual visual impact of the design and as well as to validate the protection system.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 52)
Pages:
126-133
Citation:
M. Edirisinghe et al., "Design Methods of Lightning Protection Systems by Keeping Aesthetic View of Architecturally Complex Structures", International Letters of Chemistry, Physics and Astronomy, Vol. 52, pp. 126-133, 2015
Online since:
June 2015
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References:

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[2] M. Becerra, V. Cooray, and F. Roman, Lightning Striking Distances of Complex Structures, IET Generation, Transmission and Distribution, 2/1, 2008, pp.131-138.

DOI: https://doi.org/10.1049/iet-gtd:20070099

[3] D. Kokkinos, et. al., Lightning Protection of Cable Bridges, 28th, International Conference on Lightning Protection, ICLP 2006, pp.1364-1367.

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[5] V. Jeyanthiran, M. Edirisinghe, M. Fernando, and V. Cooray, Study of lightning activity over Sri Lanka, 29th International Conference on Lightning Protection – ICLP 2008, pp.2-10.

[6] Mahesh Edirisinghe, Athalanka Liyanage, and Vernon Cooray, Critical Electric Field Needed for the Propagation of Surface Discharges on Water, IEEE-31st International Conference on Lightning Protection, ICLP 2012, Austria.

DOI: https://doi.org/10.1109/iclp.2012.6344350
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