planning and implementation of floating buildings as an...
TRANSCRIPT
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a perspective for human development in the 21st century
Karina Czapiewska & Vicky Lin, MSc
IHS Rotterdam, Urban Management Tools for Climate Change – 28th June 2017
Planning and implementation of floating buildings as an
adaptation measure in the Netherlands
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Topics | Outline
1. Background
2. BlueRevolution
3. Floating development: climate change adaptation &
mitigation measure
4. Case Study I: Floating pavilion, Rotterdam
5. Case Study II: Floating houses in Harnaschpolder, Delft
6. Other examples of floating development around the world
7. Take-home message
8. Q & A
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Floating development | Characteristics
• Buoyant foundation
• Adapts to the changes of water level
• Anchored to the bottom of water bodies
• Moveable/ re-arrageable
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Introduction | DeltaSync and Blue21
DeltaSync:
• Dutch company established in 2007
• Floating development specialist
• Research, design and consultancy
• Multidisciplinary and international team
• Perform location analysis and feasibility studies
• Mission: realizing floating cities with positive impact -> Blue21
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DeltaSync | Floating city IJmeer
Source: DeltaSync, 2006
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DeltaSync | Projects
Source: DeltaSync and Public Domain Architecten
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- Autarkisch floating buildings
- Flexible, modular
- Cradle to cradle
DeltaSync | Projects
Source: DeltaSync
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Stichting Rijnhavenpark, Stad op het Water & DeltaSync
DeltaSync | Projects
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DeltaSync | Projects
Source: DeltaSync, 2013
The Seasteading Institute, U.S.A.
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DeltaSync | Projects
Source: DeltaSync and BlueFrontiers, 2017
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Mission: realizing floating cities with positive impact
Source: DeltaSync
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NASA
Global city light image
at present there are about 3.5 billion city dwellers
living on 2 million square km of land
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Coastal areas | Cities
Many of the world largest metropolitan areas are located in coastal
areas and river floodplains
Source: DeltaSync, 2017
Areas with flood risk Rapidly growing areas
In 2030, 50% of the global
population will live within 100 km
from the coast
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Coastal areas | Ecosystems
Biodiversity.sg
• 42% animal species• 50% plant species
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Coastal areas | Rapidly growing cities
Earthzine, 2010
Manila, Philippines
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Jakarta, IndonesiaLand subsidence rate: 10-20 cm/yr, 4m in 35 years
Coastal areas | Land subsidence
Source: Piet Dircke, 2012
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Climate change| Sea level rise
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Climate change| Risk of weather catastrophes
Source: Munich Re
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Climate change| Population exposed to flooding (2070)
Source: OECD, 2007
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� Rapid urbanization in vulnerable coastal areas
� Land subsidence
� Extreme weather events and climate change
� Pressure on coastal ecosystems
21st century urban challenges
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Source: DeltaSync, 2013
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Source: DeltaSync, 2013
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Concept | Closing CO2 and nutrients cycles
Source: Deltasync, 2012
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• Tidwell (2012), Aquaculture Production
Systems. Wiley Blackwell
• FAO reports on aquaponics
METHOD
Source: DeltaSync 2015
• FAOSTAT data on food supply
• Jönsson et al. (2004). Guidelines on the
Use of Urine and Faeces in Crop
Production. EcoSanRes
• Data on CO₂ emissions
• Borowitzka et al. (2013). Algae for Biofuels
and Energy. Springer.
• Sudhakar et al. (2012). Theoretical
Assessment of Algal Biomass Potential for
Carbon Mitigation and Biofuel Production.
Iranica Journal of Energy & Environment
• Gerber et al. (2013). Tackling climate
change through livestock – A global
assessment of emissions and mitigation
opportunities.
• FAOSTAT data on land use
MAIN SOURCES:
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CASE STUDIES
Sources: rezon.org, dutchwatersector.com, hdtravelpics.com, affordablehousinginstitute.org, indosurflife.com, qz.com
Rotterdam Manila Jakarta
• pollution issues• high CO₂ emissions• high population density and growth rate
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CONTRIBUTION TO RESILIENCE
Source: DeltaSync 2015
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PUBLISHED STUDY
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Land reclamation Floating urban development
Characteristics:
- Large investement needed to start
- Sea level rise protection with
additional dikes
- Destroys local aquatic ecology
Characteristics:
- Large scale and small scale possible
- Adapts to sea level rise
- Water quality and ecology benefits
Comparison with land reclamation
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The Netherlands | Flood prone areas
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The Netherlands | Surface water areas
Incl. salt water: 65,630 km²excl. salt water: 3,630 km²
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The Netherlands | ‘Building with nature’ approach
• Make use of nature’s dynamics rather than simply minimising or mitigating the environmental impact of infrastructures and landscape works such as harbours, navigation channels, land reclamation and flood defences
• provide opportunities for natural processes
• full-scale pilot experiments, including sand engines, oyster reefs and wave-attenuating forests
beeldbank.rws.nl
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The Netherlands | ‘Room for the River’ Programme
• The goal is to give the river more room to be able to manage higher water levels
• More than 30 suitable locations were identified and several measures applied, improving safety and the quality of the surroundings
Source: ruimtevoorderivier.nl
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The Netherlands | ‘Room for the River’: opportunities
• New opportunities for recreation, nature, agriculture and (floating) buildings
Sources: beeldbank.rws.nl, ruimtemeesters.nl, siebeswart.photoshelter.com
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The Netherlands | Regulations for floating constructions
• 2008 document from the Dutch Ministry of Housing, Spatial Planning and the Environment
• Aims at supporting developers, builders and municipalities in understanding and applying regulations to floating buildings
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The Netherlands | Guidelines for floating construction
• 2011
• Important step: floating construction as fully-fledged and accepted standard construction form
• Municipalities can check if floating constructions are built properly and compile with the building code
• Contribution from DeltaSync
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Implementation | Case studies
Floating Pavilion, Rotterdam
Houses in the Harnashpolder,
Delft
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Floating Pavilion, Rotterdam
Source: Google maps, 2017
Implementation – Case study I
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Rotterdam | Climate Adaptation and Mitigation Strategies
CLIMATECHANGE
WATER SQUAREsource: fastcoexist.com
GREEN ROOFS source: Erasmus MC
FLOATING EXPANSIONsource: René de Wit
FLOODRISK
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Rotterdam | Stadshavens plans for city harbours
2008 report ‘Creating on the edge’:
• New entity: Stadshavens• 1600 ha of harbors in the
city center
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Rotterdam | Stadshavens plans for city harbours
Source: williefikken.nl
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Rotterdam | Suitable locations for floating development
DeltaSync giving advice the municipality on the most promising locations for floating development
Veto criteria:
• Space availability (ownership, shipping routes, future plans, etc.)
• Depth (low tide, storm, etc.)• Ecology (exclude protected areas)
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Rotterdam | Suitable locations for floating development
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Floating Pavilion, Rotterdam | Location
Source: Google maps
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Floating Pavilion, Rotterdam | Design strategy
starting principles
boundary conditions
technical demands
design wishes
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Floating Pavilion, Rotterdam | Process & Stakeholders
• DeltaSync made a first
sketch (concept) design +
program of requirements,
wrote a tender
• 5 consortia applied
• Multidisciplinary
consortium
Development Team
Client:
Main Contractor:
Architect:
Installation Consultant:
Floating Foundation:
Dome Construction:
Structural Engineer
Installations:
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Floating Pavilion, Rotterdam | Construction
Source: DeltaSync 2010
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Floating Pavilion, Rotterdam | Sustainability
Source: DeltaSync and Public Domain Architecten, 2010
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Floating Pavilion, Rotterdam | Transparent dome
Source: DeltaSync 2010
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Floating Pavilion, Rotterdam | Costs
• Total project costs: €4.6 million
• Total construction costs: €4.1 M
Cost distribution of various construction activities
Building platform ~ 13%
Square platform ~ 9%
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Bottlenecks | Floating Pavilion
• Building legislation: deconstruction and construction in terms of moving
• Fire department: escape route, oil spill fire (oil tanks present at harbor)
• Port of Rotterdam: collision issues (cycling bridge placed in the front)
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Success factors | Floating Pavilion
• Process approach vs. Blueprint
• Innovative approach: building team approach
• Time pressure (1 year), intensive daily working
• Political drive (WorldExpo 2010)
• Political leadership in terms of permit
• Pilot project (remain for 5 years)
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Harnashpolder, Delft
Source: Google maps, 2017
Implementation – Case study II
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Harnashpolder, Delft | Location
Source: Foka, 2014, Bing maps
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Harnashpolder, Delft | Plan
Source: DeltaSync 2009
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Harnashpolder, Delft | Plan
• Collective Private Initiative (CPI): group of citizens developing the
project together
• DeltaSync: advise on sustainability and technical issues related to
floating construction
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Harnashpolder, Delft | Citizens as project developers
Olaf Janssen, citizen and developer of a new floating technology and floating house, founder
of new company Balance d’eau (www.balancedeau.nl ) Source: Delft op Zondag, 2013
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Harnashpolder, Delft | Role of DeltaSync
• Knowledge
• Design and concept development
• Cost estimations
• Feasibility studies
- Technical (e.g.: draft, systems)
- Economic
- Planning, legal
- Water quality and ecology
• Technical integration
- Floating systems
- Utilities
- Sustainability
• Stakeholder management
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Harnashpolder, Delft | Process
2009 2010 2011 2012 2013 2014
DeltaSync’s first
meeting with the
vice mayor
people expressing
interests in the
water plots
plots are sold
negotiation between the citizens
and the municipality (price,
parking space, depth of the
water system), etc.
applying for permits
and monitoring water
quality (1 yr.)
building
(2 yrs.)
completion
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Harnashpolder, Delft | Process
2009 2010 2011 2012 2013 2014
DeltaSync’s first
meeting with the
vice mayor
people expressing
interests in the
water plots
plots are sold
negotiation between the citizens
and the municipality (price,
parking space, depth of the
water system), etc.
applying for permits
and monitoring water
quality (1 yr.)
building
(2 yrs.)
completion
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Harnashpolder, Delft | Main stakeholders
• Municipality of Delft (Gemeente Delft)
• Waterboard (Delfland)
• Future citizens
• DeltaSync
• Utility companies
• Banks
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Harnashpolder, Delft | Bottlenecks
• Banks not willing to give mortgage or offered a very high
interest rate
• Utility company not wanting to be responsible for the
connection on floating structure
• Waterboard not wanting to give the permits
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Not much literature available about this subject. Some monitoring but:
• Research methods ineffective (grab samples)
• Water under the structures never included
Lack of knowledge about impacts was hindering new projects:
• Reduction of the area available for air water interactions,
• Blocking penetration of light
• Provide surfaces that organisms can use to attach themselves
• Changes currents and affects wind (wind tunnel effect between houses)
Water quality research | Knowledge gaps
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Water quality research | Monitoring
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Water quality research | Results on www.climatescan.nl
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Water quality research | Monitoring
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Visuals – Life under floating platforms
Insight into the aquatic environment.
The type of fish and aquatic organisms present and bio-diversity, are indicators of the ecological state of water bodies.
Water quality research | Effects on the ecology
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Added value of using drones:
• Fast and versatile monitoring tool
• Allow to reach places of difficult access, usually
expensive/difficult with other methods
• Provides multi-dimensional data (4D) Rare
characteristic of monitoring techniques
• Allows mapping of parameters (spatial
distribution and variation in depth)
• Still some challenges to overcome (underwater
navigation, underwater data transfer, limited
battery life)
Water quality research | Application of underwater drones
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• Conclusions from modelling (Eftimia) and measurements (Rui)
Water quality research | Harnashpolder
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Source: DeltaSync 2013
Harnashpolder, Delft | Building process
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Harnashpolder, Delft | Built homes
Source: Olaf Janssen
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Water plot price
Project Location Price/m² Surface (m²) Water plot price
Blauwe Hart Leeuwarden € 192 522 100.000
Terwijde Utrecht € 549 91 50.000
Harnaschpolder Delft € 535 257-292 137 - 156.000
Waterbuurt Amsterdam € 980 132 129.000
Stadswerven Dordrecht € 780 174-196 143 - 152.000
Source: Balance d’eau
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Success factors | Houses in the Harnashpolder
• Innovative people within the Municipality
• Commitment of citizens
• Communication and stakeholder involvement
Recommendation:
• Importance of including floating development experts from beginning to
the end of the project
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Source: DeltaSync, 2008
Opportunities | More than just floating “houses”
Source: NASA
Source: DeltaSync Source: Marinetek
Source: wastewateralternatives.com
Source: Aquaponics.blog
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Challenges| Floating development
• Not complying with the NTA
• Integration floating buildings in the zoning plan
• Uncertainties about management and maintenance of water basin
• Lack of knowledge by residents, architects and construction companies
• Uncertainty about legal status movable/unmoveable property
• Permit by the water board (water quality issues)
• Financing and cooperation of banks
• Connection to utilities by utility companies (not big bottleneck anymore)
• Fire safety concerns
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Conclusions and recommendations
� Floating development � climate change adaptation AND mitigation strategy� infinite potentials for various functions� helps to preserve valuable land for other purposes (e.g. food
and energy production)� modularity allows the development to “grow”� high density is possible
� Understand local context , including environmental conditions (waves, tide, ecology, etc.)
� Involve relevant stakeholders from the beginning to the end
� Have sufficient knowledge about floating development (e.g. engineering) in the development to avoid failures
� Much research is still needed, as well as fast implementation
(start with pilot projects !)
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Thank you for your
attention!
… questions?
For more information
Blue21
T: +31 152561872
www.deltasync.nl
wwww.blue21.nl
Indymo
+31 (0)6 1630 8790
www.indymo.nl
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For more information
Blue21
T: +31 152561872
www.deltasync.nl
wwww.blue21.nl
Indymo
+31 (0)6 1630 8790
www.indymo.nl
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Opportunities | Affordable floating buildings
Source: DeltaSync, 2015
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Opportunities | Affordable floating buildings
Source: NLE’
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Floating farm, Bangladesh
• Practical Action developed a technology to allow farmers to grow food on
flooded land in Bangladesh
Source:https://practicalaction.org/floating-gardenshttps://www.youtube.com/watch?v=oz8SniS9p-I
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Floating toilet, Cambodia
• The HandyPod
Source: http://www.wateraid.org/news/news/sanitation-for-floating-communities-in-cambodiahttp://www.wateraid.org/news/blogs/2017/march/the-handypod-chronicles-cambodias-floating-toilets-two-years-on
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Opportunities| Ecosystem oriented design
Positive impact in aquatic life: opportunity for the implementation of eco-measures
together with floating projects to ensure/maximize/enhance ecosystem services
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Floating solar array, Japan
Source: https://cleantechnica.com/2015/10/28/construction-begins-europes-largest-floating-solar-plant/
• Advantages:
– Conserve valuable land & water
– Higher electrical conversion efficiency
– Prevent water loss from evaporation
– Limit algae growth and potentially improve water quality
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Blue21’s database to be launched…
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