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Andreas Persson

Universitetslektor

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Paradigm shift in engineering of pluvial floods: From historical recurrence intervals to risk-based design for an uncertain future

Författare

  • Salar Haghighatafshar
  • Per Becker
  • Steve Moddemeyer
  • Andreas Persson
  • Johanna Sörensen
  • Henrik Aspegren
  • Karin Jönsson

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