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December 20, 2013 12:00 AM

Polyurea solution potential for falling debris in unsafe buildings

Jane Denny
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    London -- The threat of injury posed from falling debris when buildings collapse – such as occurred at the Apollo Theatre in London this week – has already been the focus of polyurea practitioners and the material could provide a solution.

    Polyurea coatings are already being used to strengthen structures in war and earthquake zones – the British Army use the application in Iraq – is a subject that could gain some attention as accident investigators pick through the debris and evidence at the theatre.

    Part of a decorative plaster ceiling crumbled and fell onto audience members following a mild storm in the city on 19 Dec.

    Tod Rittenhouse, managing director at US-based structural engineering consultancy Weidlinger Associates said polyurea - due to its high elasticity and a resistance to mechanical strain - is “very helpful at keeping bricks or pieces of concrete intact.”

    He said: “When you have disaster, an earthquake or terrorist attack, polyurea properly applied to a wall will keep debris confined and stop it flying around in space.”

    Rittenhouse said there may be some application for ceilings and roof structures.

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