Andreas Persson
Universitetslektor
Paradigm shift in engineering of pluvial floods: From historical recurrence intervals to risk-based design for an uncertain future
Författare
Summary, in English
Precipitation is intrinsically associated with high uncertainty, which is exacerbated exponentially over time—especially concerning climate change. However, the current design practice in urban drainage infrastructure remains firmly bound to deterministic assumptions regarding the design load. This approach is too simplified—focusing only on the return period of the design event—and ignores the complexity of drainage systems and the potential changes in catchment hydrology and the at-risk valuable assets within. Therefore, the current design approach is inherently an unsustainable practice that cannot deal with extreme uncertainties associated with urban drainage and flood resilience in changing climate and society. This paper examines the current deterministic design practice and encourages a collective discussion on the need for a paradigm shift in the engineering of pluvial floods toward a risk-based design. We believe that adopting a risk-based design will partially address the uncertainty and complexity of climate and urban drainage, respectively, although a method for the new practice in a risk-based design paradigm must be developed.
Avdelning/ar
- Avdelningen för kemiteknik
- Avdelningen för Riskhantering och Samhällssäkerhet
- Centrum för geografiska informationssystem (GIS-centrum)
- Institutionen för naturgeografi och ekosystemvetenskap
- Avdelningen för Teknisk vattenresurslära
Publiceringsår
2020-06-06
Språk
Engelska
Publikation/Tidskrift/Serie
Sustainable Cities and Society
Volym
61
Dokumenttyp
Artikel i tidskrift
Förlag
Elsevier
Ämne
- Infrastructure Engineering
Nyckelord
- pluvial floods
- urban flood risk
- drainage infrastructure
- climate change
- deterministic design
- probabilistic design
Status
Published
Projekt
- Sustainable Urban Flood Management
ISBN/ISSN/Övrigt
- ISSN: 2210-6707