Urban flood risk analysis of buildings using HEC-RAS 2D in climate change framework

The present study aims to assess flood depth, building risk analysis, and the effectiveness of various flood adaptation strategies to attenuate building risk caused by urban floods in climate change scenarios. A framework is proposed where a hydraulic model, Hydrologic Engineering Center's-Rive...

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Autores principales:	R. Madhuri, Y. S. L. Sarath Raja, K. Srinivasa Raju, Bonagiri Sai Punith, Kondisetti Manoj
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	building risk analysis climate change flood depth analysis flood proofing hec-ras 2d rcp River, lake, and water-supply engineering (General) TC401-506 Water supply for domestic and industrial purposes TD201-500
Acceso en línea:	https://doaj.org/article/c5538138698a45bc9098a577f4ddc7ab
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spelling	oai:doaj.org-article:c5538138698a45bc9098a577f4ddc7ab2021-11-08T07:59:25ZUrban flood risk analysis of buildings using HEC-RAS 2D in climate change framework2616-651810.2166/h2oj.2021.111https://doaj.org/article/c5538138698a45bc9098a577f4ddc7ab2021-01-01T00:00:00Zhttp://doi.org/10.2166/h2oj.2021.111https://doaj.org/toc/2616-6518The present study aims to assess flood depth, building risk analysis, and the effectiveness of various flood adaptation strategies to attenuate building risk caused by urban floods in climate change scenarios. A framework is proposed where a hydraulic model, Hydrologic Engineering Center's-River Analysis System 2D (HEC-RAS 2D), is applied for 2-dimensional flood modeling to estimate (a) submerged areas, (b) flood depth, and (c) building risk for extreme events corresponding to two representative concentration pathways (RCPs), 6.0 and 8.5. Greater Hyderabad Municipal Corporation (GHMC), India, is chosen for demonstration. Percentages of buildings in GHMC under high, medium, and low risks for RCP 6.0 are 38.19, 9.91, and 51.9% in the respective order, and these are 40.82, 10.55, and 48.63% for RCP 8.5. Six flood proofing (FP) strategies (S1–S6) are proposed for attenuating building risk along with the required capital cost. The capital investment required for FP to achieve the ideal situation of no risk for all buildings (strategy S6) works out to Rs. 3,740 × 107 and Rs. 3,800 × 107 for RCPs 6.0 and 8.5. It is observed that the effect of adaptation strategies is significant. HIGHLIGHTS Generation of flood inundation maps using Hydrologic Engineering Center's-River Analysis System 2D (HEC-RAS 2D) for the urban catchment of GHMC under two representative concentration pathways (RCPs).; Building risk analysis and formulation of adaptation strategies under two RCPs.;R. MadhuriY. S. L. Sarath RajaK. Srinivasa RajuBonagiri Sai PunithKondisetti ManojIWA Publishingarticlebuilding risk analysisclimate changeflood depth analysisflood proofinghec-ras 2drcpRiver, lake, and water-supply engineering (General)TC401-506Water supply for domestic and industrial purposesTD201-500ENH2Open Journal, Vol 4, Iss 1, Pp 262-275 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	building risk analysis climate change flood depth analysis flood proofing hec-ras 2d rcp River, lake, and water-supply engineering (General) TC401-506 Water supply for domestic and industrial purposes TD201-500
spellingShingle	building risk analysis climate change flood depth analysis flood proofing hec-ras 2d rcp River, lake, and water-supply engineering (General) TC401-506 Water supply for domestic and industrial purposes TD201-500 R. Madhuri Y. S. L. Sarath Raja K. Srinivasa Raju Bonagiri Sai Punith Kondisetti Manoj Urban flood risk analysis of buildings using HEC-RAS 2D in climate change framework
description	The present study aims to assess flood depth, building risk analysis, and the effectiveness of various flood adaptation strategies to attenuate building risk caused by urban floods in climate change scenarios. A framework is proposed where a hydraulic model, Hydrologic Engineering Center's-River Analysis System 2D (HEC-RAS 2D), is applied for 2-dimensional flood modeling to estimate (a) submerged areas, (b) flood depth, and (c) building risk for extreme events corresponding to two representative concentration pathways (RCPs), 6.0 and 8.5. Greater Hyderabad Municipal Corporation (GHMC), India, is chosen for demonstration. Percentages of buildings in GHMC under high, medium, and low risks for RCP 6.0 are 38.19, 9.91, and 51.9% in the respective order, and these are 40.82, 10.55, and 48.63% for RCP 8.5. Six flood proofing (FP) strategies (S1–S6) are proposed for attenuating building risk along with the required capital cost. The capital investment required for FP to achieve the ideal situation of no risk for all buildings (strategy S6) works out to Rs. 3,740 × 107 and Rs. 3,800 × 107 for RCPs 6.0 and 8.5. It is observed that the effect of adaptation strategies is significant. HIGHLIGHTS Generation of flood inundation maps using Hydrologic Engineering Center's-River Analysis System 2D (HEC-RAS 2D) for the urban catchment of GHMC under two representative concentration pathways (RCPs).; Building risk analysis and formulation of adaptation strategies under two RCPs.;
format	article
author	R. Madhuri Y. S. L. Sarath Raja K. Srinivasa Raju Bonagiri Sai Punith Kondisetti Manoj
author_facet	R. Madhuri Y. S. L. Sarath Raja K. Srinivasa Raju Bonagiri Sai Punith Kondisetti Manoj
author_sort	R. Madhuri
title	Urban flood risk analysis of buildings using HEC-RAS 2D in climate change framework
title_short	Urban flood risk analysis of buildings using HEC-RAS 2D in climate change framework
title_full	Urban flood risk analysis of buildings using HEC-RAS 2D in climate change framework
title_fullStr	Urban flood risk analysis of buildings using HEC-RAS 2D in climate change framework
title_full_unstemmed	Urban flood risk analysis of buildings using HEC-RAS 2D in climate change framework
title_sort	urban flood risk analysis of buildings using hec-ras 2d in climate change framework
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/c5538138698a45bc9098a577f4ddc7ab
work_keys_str_mv	AT rmadhuri urbanfloodriskanalysisofbuildingsusinghecras2dinclimatechangeframework AT yslsarathraja urbanfloodriskanalysisofbuildingsusinghecras2dinclimatechangeframework AT ksrinivasaraju urbanfloodriskanalysisofbuildingsusinghecras2dinclimatechangeframework AT bonagirisaipunith urbanfloodriskanalysisofbuildingsusinghecras2dinclimatechangeframework AT kondisettimanoj urbanfloodriskanalysisofbuildingsusinghecras2dinclimatechangeframework
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Urban flood risk analysis of buildings using HEC-RAS 2D in climate change framework

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