Development of site specific wind hazard map for peninsular Malaysia using geo-spatial modelling

Hazard assessment is one of the coping capacity activity in minimise the effect of risk. In wind engineering the wind hazard assessment are evaluated based on the value of wind speed. Currently the value of wind speed is referred to basic wind speed (Vs). Basic wind speed is defined as the probabili...

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Main Author:	Ramli, Noram Irwan
Format:	Thesis
Language:	English
Published:	2019
Subjects:	T Technology
Online Access:	http://eprints.usm.my/48112/1/Development%20Of%20Site%20Specific%20Wind%20Hazard%20Map%20For%20Peninsular%20Malaysia%20Using%20Geo-Spatial%20Modelling.pdf
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spelling	my-usm-ep.481122021-11-17T03:42:11Z Development of site specific wind hazard map for peninsular Malaysia using geo-spatial modelling 2019-09-01 Ramli, Noram Irwan T Technology TA1-2040 Engineering (General). Civil engineering (General) Hazard assessment is one of the coping capacity activity in minimise the effect of risk. In wind engineering the wind hazard assessment are evaluated based on the value of wind speed. Currently the value of wind speed is referred to basic wind speed (Vs). Basic wind speed is defined as the probability of the maximum wind speed within the return period. However, wind speed at specific location which is known as site wind speed (Vsite) should consider the effect of land use land cover and topography effect. Apart from that, wind hazard assessment on a spatial area is not feasible because of the Vsite value determined based on the point location. Therefore, the main objective of this study to develop the site specific wind hazard map by using geo-spatial technique. In MS 1553:2002 Vsite is calculated by multiplying the Vs with the Land Use Land Cover (LULC) factor denoted as Mz,cat, and topographic factor as Mh. In order to apply these formulae in a spatial area, Geographical Information System is used. This study also examined the wind hazard assessment by compare the performance of Vs map and Vsite map produced. For that reason, the past windstorm damage in Peninsular Malaysia is used to validate the performance of the wind hazard map produced. From the result, wind hazard map based on the site specific wind speed (Vsite) is highly recommended compared to the basic wind speed (Vs) map. The result showed that the damage occurred at lower Vs value compared to Vsite. Based on 50 years return period for windstorm damage cases, Vs is identified at 31.66 m/s which is 9.02% lesser when compared to value identified using Vsite which is equal to 34.80 m/s. It can be concluded that the risk assessment by referring only to Vs are misleading. Thus, the current risk assessment approach may underestimate the real potential of wind hazard for site specific location. 2019-09 Thesis http://eprints.usm.my/48112/ http://eprints.usm.my/48112/1/Development%20Of%20Site%20Specific%20Wind%20Hazard%20Map%20For%20Peninsular%20Malaysia%20Using%20Geo-Spatial%20Modelling.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Awam
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology T Technology
spellingShingle	T Technology T Technology Ramli, Noram Irwan Development of site specific wind hazard map for peninsular Malaysia using geo-spatial modelling
description	Hazard assessment is one of the coping capacity activity in minimise the effect of risk. In wind engineering the wind hazard assessment are evaluated based on the value of wind speed. Currently the value of wind speed is referred to basic wind speed (Vs). Basic wind speed is defined as the probability of the maximum wind speed within the return period. However, wind speed at specific location which is known as site wind speed (Vsite) should consider the effect of land use land cover and topography effect. Apart from that, wind hazard assessment on a spatial area is not feasible because of the Vsite value determined based on the point location. Therefore, the main objective of this study to develop the site specific wind hazard map by using geo-spatial technique. In MS 1553:2002 Vsite is calculated by multiplying the Vs with the Land Use Land Cover (LULC) factor denoted as Mz,cat, and topographic factor as Mh. In order to apply these formulae in a spatial area, Geographical Information System is used. This study also examined the wind hazard assessment by compare the performance of Vs map and Vsite map produced. For that reason, the past windstorm damage in Peninsular Malaysia is used to validate the performance of the wind hazard map produced. From the result, wind hazard map based on the site specific wind speed (Vsite) is highly recommended compared to the basic wind speed (Vs) map. The result showed that the damage occurred at lower Vs value compared to Vsite. Based on 50 years return period for windstorm damage cases, Vs is identified at 31.66 m/s which is 9.02% lesser when compared to value identified using Vsite which is equal to 34.80 m/s. It can be concluded that the risk assessment by referring only to Vs are misleading. Thus, the current risk assessment approach may underestimate the real potential of wind hazard for site specific location.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Ramli, Noram Irwan
author_facet	Ramli, Noram Irwan
author_sort	Ramli, Noram Irwan
title	Development of site specific wind hazard map for peninsular Malaysia using geo-spatial modelling
title_short	Development of site specific wind hazard map for peninsular Malaysia using geo-spatial modelling
title_full	Development of site specific wind hazard map for peninsular Malaysia using geo-spatial modelling
title_fullStr	Development of site specific wind hazard map for peninsular Malaysia using geo-spatial modelling
title_full_unstemmed	Development of site specific wind hazard map for peninsular Malaysia using geo-spatial modelling
title_sort	development of site specific wind hazard map for peninsular malaysia using geo-spatial modelling
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Awam
publishDate	2019
url	http://eprints.usm.my/48112/1/Development%20Of%20Site%20Specific%20Wind%20Hazard%20Map%20For%20Peninsular%20Malaysia%20Using%20Geo-Spatial%20Modelling.pdf
_version_	1747821881509019648

Development of site specific wind hazard map for peninsular Malaysia using geo-spatial modelling

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