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Fabian Nehrbass. Amphibious Homes: A Real Solution to Flooding?. Sea level rise- floods. Thailand $45 billion dollars damage due to floods in the past two years Australia $9.6 billion 1.4 million people live in Louisiana’s coastal parishes 634,000 homes New Orleans sea level rise:

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Presentation Transcript
sea level rise floods
Sea level rise- floods
  • Thailand $45 billion dollars damage due to floods in the past two years
  • Australia $9.6 billion
  • 1.4 million people live in Louisiana’s coastal parishes
  • 634,000 homes
  • New Orleans sea level rise:
    • 8” by 2030
    • 19” by 2050
possible solutions
Possible solutions:
  • Levees
  • Restoration of wetlands
  • Sediment use form Mississippi to rebuild land
  • Abandon land
  • Adapt!
amphibious homes
Amphibious homes
  • Allows the home to sit close to the ground, and in the event of a flood, rise up with the rising water
why not just elevate homes
Why not just elevate homes?
  • Increased vulnerability of the structure to wind damage
  • Elevations are expensive
    • $40,000-$60,000 to elevate vs. $25,000 to retrofit existing house with floating foundation
  • Difficult access to living areas
  • Loss of character
advantages of floating homes
Advantages of floating homes
  • No loss of character
  • Cheaper than elevating
  • No issues with soil subsidence
  • Less vulnerable to hurricane damage
problems with floating homes
Problems with floating homes
  • FEMA does not believe they are a good strategy to protect against hurricane flooding
  • Storm surge can still push water into such a home
  • Still need to evacuate
  • Only work in areas where water rises slowly
  • Size and weight limitations
problems continued
Problems continued
  • **National Flood Insurance Program will not insure floating houses because they are not considered anchored to the ground**
  • Chance they aren’t allowed
    • In Lakeview, house wasn’t allowed in “special flood hazard zone”
  • More susceptible to wind damage?
slide10
FEMA
  • Suggestions
how it works buoyant foundation project
How it works – Buoyant Foundation Project
  • Shotgun retrofitting
    • Buoyancy blocks and a vertical guidance system interconnected by a light structural frame
  • Utility lines have either long, coiled “umbilical” lines or self-sealing “breakaway” connections that disconnect gas and sewer lines when the house begins to rise
examples
Examples
  • Netherlands
    • Maas River
    • Prison
    • Greenhouses
  • Maldives – designed by Watersudio
  • Raccourci Old River, Louisiana
  • 9th Ward
  • Lakeview
  • UK
maas river
Maas River
  • $310,000 each (about 25% greater)
  • All survived major floods in 2011
conclusion
Conclusion
  • No flood insurance, no success
  • Frequency of storms?
  • Wind protection?
  • Float them down the river to Baton Rouge!