Elizabeth English BRWIV

7/29/2019 Elizabeth English BRWIV

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Basic Flood Risk Equation

Flood Risk = Flood Frequency X Consequences


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Embankment of thelow lying areas

Protection ofsingle buildings

Dwellingmounds

IntroductionPresent Practice in Flood Management


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5Copyright: Hochwasserschutzzentrale Kln

new technology should be used incombination with existing structuresin the hinterland

temporary flood abatement systems

Flood Resilience through Alleviation


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Research on the performance on

temporary flood abatement systems

Development of Europeanapproval standard


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Flood Resilience through Avoidance

Regulation in Spatial Planning

Main levee line

adaptation to flooding bydry- and wet-proofing

adaptation to flooding by floatablebuildings and buildings on piles

Terrestrial buildings Amphibious buildings

Inner dike line of

flood compartment


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Flood Resilience through Avoidance

Adaptation Buildings by Retrofitting

Dry-Proofing

of Buildings


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Baca Architects: River Thames Amphibious House


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static

floating

UK's first amphibious house

becomes a "free-floating

pontoon

During dry times, the home will rest on

fixed foundations that will keep it in

place

During flooding, the entire structure

will rise up in its dock, and buoy along

with the flood waters


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Louisiana is Experiencing a Coastal Crisis

1,883 squaremiles lost since

the 1930s

Currentlylosing over16square miles

per year


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Potential to lose an additional 800 1,750square miles of land over the next 50 years

Louisiana is Experiencing a Coastal Crisis

Predicted Land Change Over Next 50 Years


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Land Building Experiments

Future Without

Action

Maximize Land

No Diversions

Multiple Small

Diversions

4100

4200

4300

4400

4500

4600

4700

4800

4900

LandintheCoastalStudyArea(

SquareMiles)

Land Building Over Time For 50 Years (Moderate Conditions)

2012 2021 2031 2041 2051 2061


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The people who live on the island want to stay on theisland. My plan is to get the community back together.

We want a community where we can all live andintermarry and continue on our community and

culture

-- Chief Albert Naquin


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Is there a way to organize the local

knowledge, before its gone?


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Interdependence

SolidarityBudget

Europe Netherlands Zeeland

Chances for an adequatereaction

(in present setting)


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Interdependence

SolidarityBudget

United

States

Louisiana Lafourche

Parish

Chances for an adequatereaction

(in present setting)


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If we stay on the same path that we areon, I believe that the coastal communities

will not be around to benefit fromrestoration when it happens, period.

Given that statement, what can we do to

change the path that were on, in termsof resources, in terms of focus, we the

engaged citizens, to have my statement

be wrong.

-- Shirley Laska


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Alterations to HydrologySouthwest Louisiana planning region 4

We have to build to live with water, we have to expectflooding. Flooding is what built our land


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New land can be built by rerouting the lower river sothat the sediment is deposited in the shallow water,where the river does what it always does, it builds a

delta, it builds new land.

-- David Muth


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WIND + IMPACT Hancock County Shelters


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WIND + IMPACT Hancock County Shelters


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Local waste

water

treatment

Drinkingwater

production

Water

storage


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Marsh development and housing


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AMPHIBIOUS HOUSING IN MAASBOMMEL NL

NORMAL SITUATION OF THE WATERLEVEL


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HIGH WATERLEVEL DUE TO (WINTER 2011) RIVERFLOOD

AMPHIBIOUS HOUSING IN MAASBOMMEL NL


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In rural Louisiana --

Amphibious homes at Raccourci Old River, Pointe Coupee Parish, LA


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Dry in September . . . the same house . . . Floating in February

Average cost of buoyancy

system is around $5,000.


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Amphibious foundations are not new!

Dry in September . . . the same house . . . Floating in February


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Flood conditions at Raccourci Old River. The house in the foreground is amphibious.


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This structure is not. It was in the background in the previous slide.


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Extensive damage to elevated home on left. Undamaged amphibious home on right.


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So why fight floodwater

when you can float on it?


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Five LSU Mechanical Engineering studentsbuilt a platform with a buoyant foundation totest the design for flotation and stability:

Scott Schroth Matt GuidryDustin Husser Ben Morvant

Dustin Ewing

Students from the LSU Hurricane Center added ahouse frame and built the flood tank to run the tests:

Stuart Broussard

Ezra Boyd

SPRING - SUMMER 2007

(N t id t d i h i h d t t l i t )


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(Note guidance post design has since changed to telescoping posts)


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LIFT-OFF!


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Moving the sandbags to tilt the house


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g g

Testing complete!


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g p

B F d i


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Buoyant FoundationsSave Shotgun Houses


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The stationary brick base structure contains


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The stationary brick base structure containsplumbing, utilities and rainwater storagecisterns. Each two-room amphibious

bamboo dwelling unit is living and sleepingquarters for a single family.


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Day 10 Brick foundation walls are started for water cisterns and composting

latrine storage


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Day 33 Ferrocement frame prepared for one of the buoyant foundations


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Buoyancy blocks made of recapped empty plastic bottles


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Day 66 "You will notice here ... the house on the right is higher than the left ...

Its floating!" (on recapped plastic bottle buoyancy blocks)


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January 2010 Construction of LIFT House dwellings completed


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WE HAVE WE CAN WE WILL OR EVEN


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Parking garage provides buoyancy

when flooding occurs

Housing

Shops

Parking

Water


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New Community Core Facility


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New Community Core Facility

Can house critical facilities in coastal communities

Hurricane shelter for local community

Police and emergency services

Hospital / health clinic Municipal offices

Library and elementary school

Community services

Shops and offices on ground floor

After a hurricane, if homes do not survive, core facility

provides support for rebuilding community


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Elizabeth English BRWIV

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