11-12-2015 Floating buildings up to 15 floors can withstand hurricanes

New research shows that it is technically feasible to create floating high-rise buildings of 15 floors at sea, even under hurricane conditions.

This is one of the conclusions of our intern Kelvin Ko, who just completed his Civil Engineering Masters thesis at TU Delft. The research is a big step forward for the BlueRevolution, because it increases the attractiveness of floating urban development for cities such as New York, Hong Kong and Singapore.

Kelvin Ko: “I researched whether it’s technically feasible to build a floating city in the open sea with huge waves and frequent storms. The answer is yes. And what really surprised me is that you can realise high-rise buildings up to 50 meters high and still being hurricane proof, assumed that the building and floating platform are very rigid connected to each other. Which means: waves of 4 meters high and the wind blowing at 200 kilometers an hour.”

Fascinating fact: inhabitants won’t feel any movement caused by waves… Really?

“Yes, you just have to build the city with several modular floating platforms rigidly connected to each other. This way, the total length and width of the floating city will become larger than the wavelength. This causes the waves to have less effect on the floating city, which will only experience very small displacements, so small that inhabitants won’t feel them. Only under severe wave circumstances the platforms experience large displacements, like during a tsunami.”

“Also, I found out that the larger the water depth gets, the less expensive a floating city becomes compared to land reclamation, simply because for the latter you need more sand for larger water depths.”

Some technical details: from the results and calculations in this thesis, it is reliable to connect up to 4 platforms in a linear formation for the chosen design of the hexagonal platform with sides of 60 m and a construction height of 14 m. This means that a floating community of 16 platforms (in a configuration of 4 by 4 platforms) can be realised and house approximately 4000 inhabitants.

Kelvin Ko’s paper appeared in the Danish journal Urban Island Studies and he will present his research at the conference Island Cities and Urban Archipelagos 2016 in Hong Kong.

Source image: www.discovery.com/tv-shows/other-shows/videos/mega-engineering-floating-new-orleans/


08-07-2013 Flood proofing critical infrastructure of Dordrecht

A case study on the critical infrastructure of Dordrecht has been carried out by students Tom den Ouden and Bob Souwer from the Rotterdam University of Applied Sciences. The objective was to look for quick-wins in flood proofing hotspot buildings within a critical infrastructure...[more]


24-06-2013 Connecting to the Floating Future

The Community of Practice Floating Construction (CoP) organized 'Connecting to the Floating Future', the 20th of june. The next step in collecting, sharing and building knowledge in the field of floating construction.[more]



27-03-2013 Newsletter

The latest DeltaSync newsletter is released.[more]


25-01-2013 BBC: Should we build new cities at sea?

BBC News interview with Bart Roeffen from DeltaSync at the Floating Pavilion in Rotterdam and the floating homes in Delft.

Link to BBC News[more]


23-12-2012 Seasons greetings

Our best wishes for a white Christmas and a bright New Year on a Blue Planet

[more]


19-11-2012 Public lecture: Blue Revolution

'About 70% of the earth surface is still used inefficiently. While on the land a transition has been made to organized agriculture, on the water we are still basically hunters and gatherers', according to Rutger de Graaf, lector Adaptive construction at the knowledge centre...[more]


26-10-2012 First watervillas launched in the Harnaschpolder of Delft

With great public attention and in the presence of Delft council member Stephan Brandligt (sustainable development), the first two floating foundations were launched. An exciting moment, because even for the builders it is not an ordinary job. Floating buildings are still a...[more]


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