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Architects proposed expanding out into the sea to protect Kingston upon Hull from rising sea levels

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Architects propose 'radical' coastal flood defenses

Ecologist

15th January, 2010

Architects, engineers and developers say that the UK faces an 'extreme threat' from flooding, and must respond accordingly

A joint project run by The Royal Institute of British Architects (RIBA), the Institution of Civil Engineers (ICE) and the thinktank Building Futures, has said that straight-forward engineering defences are no longer sustainable or affordable in defending UK coastlines.

A report produced by the group says that the only viable options for coastal protection are to retreat inland, create habitable defence structures or build out into the sea.

Focusing on Kingston upon Hull and Portsmouth, two of the UK’s highest flood risk areas, the research presented six scenarios and proposed solutions based on a trio of briefings.

Extreme situation

RIBA President Ruth Reed said:
‘The scenarios we have created are extreme, but it is an extreme threat we are facing.

‘Approximately 10 million people live in flood risk areas in England and Wales, with 2.6 million properties directly at risk of flooding from rivers or the sea.’

The report said that the 12,000 kilometers of coastline in the UK was now much more densely populated, increasing the possible scale of disaster.

However, Reed offered a solution:
 ‘If we act now, we can adapt in such a way that will prevent mass disruption and allow coastal communities to continue to prosper.’

Three solutions

The proposed solutions came under three headings: retreat, defend or attack.

1. Retreat involves moving the line of coastal defence inland, allowing flood water to occupy previously protected urban areas.

2. In terms of defence, the benefits of preventing water entering existing cities were said to outweigh the costs, but the report claims that there is currently a deficit in costal flood defences, caused by a lack of Government funding.

3. 'Attacking' the sea has been a proven success overseas, and due to the high demand for space, the public and private sector are both willing to invest in expanding seaward. 

Urgent change

The report was designed to provoke longer-term thinking across a wider audience: from government and policy-makers, to planners, architects and importantly, the general public.

Chair of the Institution of Civil Engineers (ICE) steering group, Ben Hamer, said:
‘The UK must urgently change the way it plans, builds and designs at-risk communities.’

Useful links
The full project will be exhibited at the Building Centre, London 6th Jan – 29th Jan 2010, before traveling to Portsmouth 15th - 27th February and Kingston upon Hull 15th – 28th April

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