The effectiveness of flood proofingvulnerable hotspots to improve urbanflood resilience22 November2012DeltaSync BV &Rotter...
Deltasync• Specialized in flood proof urban development• Architecture, consultancy, and research• 5 years experience in an...
Workpackages19/12/2012      Floodproofing ‘Hotspot’ buildings   3
Hotspot buildings •   Definition: Hotspot’ buildings are essential nodes in critical     infrastructure on which urban are...
Vulnerability hotspots |examples
Floodproofing catalogue19/12/2012             Floodproofing ‘Hotspot’ buildings   6
Wet flood proofing• Allows temporary flooding of the lower parts of the  building• Water resistant building materials are ...
Dry flood proofing• Water is prevented to enter the building• Treating the facades with coatings, using resistant  materia...
Elevating structures• Elevate the entire building above the expected flood level• The connection to infrastructure is to b...
Building on mounds• Elevate the entire building by building on an artificial hill• Traditional Dutch concept• Also used as...
Floating structures• Building founded on a floating structure that is  permanently located in the water• Fixed to a locati...
Amphibious structures• Building located in flood plane• Traditional foundation combined with a floating  foundation       ...
Temporary and demountable barriers• Temporary: Installed during a flood event and removed  after• Demountable: fully pre-i...
Permanent barriers• Permanenty in place• Examples: dikes and floodwalls  Rickard, C. E., 2009                             ...
Floodproofing methods: design considerations19/12/2012             Floodproofing ‘Hotspot’ buildings   15
Hotspot requirements - Data collection19/12/2012               Floodproofing ‘Hotspot’ buildings   16
Subterranean Hotspot requirements – Design limitations                                                    High building   ...
Floodproofing limitations19/12/2012              Floodproofing ‘Hotspot’ buildings   18
Floodproofing limitations    Table Fout! Geen tekst met opgegeven opmaakprofiel in document..1                   Overview ...
building                                        R                                                  R           R      Subs...
Design tool| Relevance map19/12/2012             Floodproofing ‘Hotspot’ buildings   21
Flood proofing selection tool19/12/2012               Floodproofing ‘Hotspot’ buildings   22
Example of using the evaluation tool19/12/2012               Floodproofing ‘Hotspot’ buildings   23
Conclusions• Selection tool can be used to rapidly screen options for  flood proofing hotspots• Evaluation tool can provid...
For more information:DeltaSyncMolengraaffsingel 12-142629 JD DelftNetherlandsDr. ir. Rutger de GraafT: +31 152561872C: +31...
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The effectiveness of flood proofing vulnerable hotspots to improve urban flood resilience. FloodRisk2012 Presentation

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Urban systems contain assets of high value, complex and interdependent infrastructure networks. These infrastructure networks are critical for the continuity of economic activities as well as for the people’s basic living needs. Hotspot buildings are essential nodes in critical infrastructure on which urban areas depend for their functioning. This article evaluates the feasibility and effectiveness of several concepts of flood proofing vulnerable hotspots buildings. For this purpose a design tool has been made to assist designers and decision makers in selecting and evaluating flood proofing concepts. Flood characteristics, building characteristics and location characteristics are used as input for the evaluation of the effectiveness of flood proofing hotspots with regard to costs and other relevant aspects.

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The effectiveness of flood proofing vulnerable hotspots to improve urban flood resilience. FloodRisk2012 Presentation

  1. 1. The effectiveness of flood proofingvulnerable hotspots to improve urbanflood resilience22 November2012DeltaSync BV &Rotterdam University of Applied SciencesDr. ir. Rutger de Graaf
  2. 2. Deltasync• Specialized in flood proof urban development• Architecture, consultancy, and research• 5 years experience in an floating construction market• Broad business network: Construction and engineering industry, Municipalities, Project developers
  3. 3. Workpackages19/12/2012 Floodproofing ‘Hotspot’ buildings 3
  4. 4. Hotspot buildings • Definition: Hotspot’ buildings are essential nodes in critical infrastructure on which urban areas depend for their functioning. • Examples: airports, train stations, energy storages, communication buildings, food distribution centres, hospitals, financial centres, metro stations, electricity substations, drinking water treatment works, sewage treatment works, bus stations, police stations, and fire stations. . • Point of attention: Hotspots buildings can only provide value to the urban system by connectivity to this system19/12/2012 Floodproofing ‘Hotspot’ buildings 4
  5. 5. Vulnerability hotspots |examples
  6. 6. Floodproofing catalogue19/12/2012 Floodproofing ‘Hotspot’ buildings 6
  7. 7. Wet flood proofing• Allows temporary flooding of the lower parts of the building• Water resistant building materials are applied, or materials can be used that can be easily repaired or replaced (Pasche, E., 2008) (Pasche, E., 2008)19/12/2012 Floodproofing ‘Hotspot’ buildings 7
  8. 8. Dry flood proofing• Water is prevented to enter the building• Treating the facades with coatings, using resistant materials or building materials with a low permeability• Openings in the facades can be closed with flood shields, panels or doors (Leven met water, 2008) (Pohkit Goh: Flood House )19/12/2012 Floodproofing ‘Hotspot’ buildings 8
  9. 9. Elevating structures• Elevate the entire building above the expected flood level• The connection to infrastructure is to be secured against flooding as well Groene.nl, 2010) (Allshesaysis. blogspot.com, 2010 )19/12/2012 Floodproofing ‘Hotspot’ buildings 9
  10. 10. Building on mounds• Elevate the entire building by building on an artificial hill• Traditional Dutch concept• Also used as shelter in the past (Verdouw, G., 2011) (Waterschap Brabantse Delta, 2010)19/12/2012 Floodproofing ‘Hotspot’ buildings 10
  11. 11. Floating structures• Building founded on a floating structure that is permanently located in the water• Fixed to a location while allowing a certain vertical movement by the application of mooring posts• Flexible connection to the land needed (De Volkskrant, 2007)) (Deltasync, 2010)19/12/2012 Floodproofing ‘Hotspot’ buildings 11
  12. 12. Amphibious structures• Building located in flood plane• Traditional foundation combined with a floating foundation (Leven met water, 2008) (Donsky, A., 2009)19/12/2012 Floodproofing ‘Hotspot’ buildings 12
  13. 13. Temporary and demountable barriers• Temporary: Installed during a flood event and removed after• Demountable: fully pre-installed but operated during a flood19/12/2012 Floodproofing ‘Hotspot’ buildings 13
  14. 14. Permanent barriers• Permanenty in place• Examples: dikes and floodwalls Rickard, C. E., 2009 Hadhazy, A., 201119/12/2012 Floodproofing ‘Hotspot’ buildings 14
  15. 15. Floodproofing methods: design considerations19/12/2012 Floodproofing ‘Hotspot’ buildings 15
  16. 16. Hotspot requirements - Data collection19/12/2012 Floodproofing ‘Hotspot’ buildings 16
  17. 17. Subterranean Hotspot requirements – Design limitations High building Vital track connection High or uneven vertical load Underground infrastructure Subterranean Heavy building Vital road connection High building Non-building Vital track connection Vital functions on ground level High or uneven vertical load Subterranean19/12/2012 Floodproofing ‘Hotspot’ buildings Heavy building 17
  18. 18. Floodproofing limitations19/12/2012 Floodproofing ‘Hotspot’ buildings 18
  19. 19. Floodproofing limitations Table Fout! Geen tekst met opgegeven opmaakprofiel in document..1 Overview of flood proofing concepts for hotspots (R = can be retrofitted). Limitations Wet Dry Stilts Mound Floating Amphibious Temporary Permanent proof proof Barriers Barriers Drinking water treatment R R R Sewage water treatment R R R Substations, surface R R Substations, building R R R Substations, underground R R R Energy storage R R R Hospitals R R R Fire stations R19/12/2012 Floodproofing ‘Hotspot’ buildings 19
  20. 20. building R R R Substations, underground R R R Table storage Geen tekst met opgegeven opmaakprofiel in document..1 Overview of flood Energy Fout! Floodproofing limitations = canR retrofitted). proofing concepts for hotspots (R be R R Limitations Wet Dry Stilts Mound Floating Amphibious Temporary Permanent Hospitals proof proof Barriers Barriers R R R Drinking water Fire stations treatment R R R R Police stations Sewage water R treatment Communication centres R R R R R R R Food Substations, distribution R R R surface R R Financial Substations, buildings R R R building R R R Airports Substations, R R underground R R R Bus station Energy storage R Train station R R R platform and tracks Hospitals Metro station R R R underground Fire stations R R R R19/12/2012 Police stations Floodproofing ‘Hotspot’ buildings 20
  21. 21. Design tool| Relevance map19/12/2012 Floodproofing ‘Hotspot’ buildings 21
  22. 22. Flood proofing selection tool19/12/2012 Floodproofing ‘Hotspot’ buildings 22
  23. 23. Example of using the evaluation tool19/12/2012 Floodproofing ‘Hotspot’ buildings 23
  24. 24. Conclusions• Selection tool can be used to rapidly screen options for flood proofing hotspots• Evaluation tool can provide inside in the most feasible options that can be further studied in a detailed cost estimation• Evaluation tool can be custumized to include local data19/12/2012 Floodproofing ‘Hotspot’ buildings 24
  25. 25. For more information:DeltaSyncMolengraaffsingel 12-142629 JD DelftNetherlandsDr. ir. Rutger de GraafT: +31 152561872C: +31 616308790www.deltasync.nl

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