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Predicting the microbial exposure risks in urban floods using GIS, building simulation, and microbial models

Taylor, J; Biddulph, P; Davies, M; Lai, KM; (2013) Predicting the microbial exposure risks in urban floods using GIS, building simulation, and microbial models. Environment International , 51 pp. 182-195. 10.1016/j.envint.2012.10.006. Green open access

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Abstract

London is expected to experience more frequent periods of intense rainfall and tidal surges, leading to an increase in the risk of flooding. Damp and flooded dwellings can support microbial growth, including mould, bacteria, and protozoa, as well as persistence of flood-borne microorganisms. The amount of time flooded dwellings remain damp will depend on the duration and height of the flood, the contents of the flood water, the drying conditions, and the building construction, leading to particular properties and property types being prone to lingering damp and human pathogen growth or persistence. The impact of flooding on buildings can be simulated using Heat Air and Moisture (HAM) models of varying complexity in order to understand how water can be absorbed and dry out of the building structure. This paper describes the simulation of the drying of building archetypes representative of the English building stock using the EnergyPlus based tool ‘UCL-HAMT’ in order to determine the drying rates of different abandoned structures flooded to different heights and during different seasons. The results are mapped out using GIS in order to estimate the spatial risk across London in terms of comparative flood vulnerability, as well as for specific flood events. Areas of South and East London were found to be particularly vulnerable to long-term microbial exposure following major flood events.

Type: Article
Title: Predicting the microbial exposure risks in urban floods using GIS, building simulation, and microbial models
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.envint.2012.10.006
Publisher version: http://dx.doi.org/10.1016/j.envint.2012.10.006
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Flood; Mould; GIS; Hygrothermal; Urban; Building simulation
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/1381639
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