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BaleHaus@Bath, Bath, United Kingdom

Thursday 20 May 2010
 

I’ll huff and I’ll puff…

 
 
 
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11/08/10 MALCOLM MAGINN, MACCLESFIELD
We are arranging a visit by Stockport Architects to BATH on 4th Sept., 2010.
Would it be possible to view the Bale House ?
Regards
Malcolm Maginn ( m. 07831 852346 )
 

Fairytales rewritten as straw house at Bath Uni withstands 120mph winds 

Whilst in fairytales a straw house may be destroyed by the breath of a Big Bad Wolf, at the University of Bath a real straw house has managed to withstand test winds of up to 120mph. The BaleHaus@Bath was built by industrial partners ModCell as part of a major research project to scientifically assess the performance of straw as a sustainable building material. The research team, led by Professor Pete Walker, Director of the University’s BRE* Centre for Innovative Construction Materials, has been monitoring the house since October 2009 for thermal performance and humidity levels and has now tested the structure of the house for resisting winds up to 120mph.

The wind load was simulated using hydraulic jacks which pushed horizontally against the walls with a total force exceeding four tonnes, equivalent to the dynamic force of a hurricane. During the tests, the walls moved no more than four millimetres under peak loads, well within design requirements and as predicted.

The researchers will use this data to develop a theoretical computer model of the house to simulate how a three storey, or even higher, BaleHaus building would withstand such winds. The research team, including Dan Maskell and Dr Katharine Beadle, had previously conducted similar tests for racking strength on the individual wall panels. This is however the first time a whole house made of straw bale panels has been tested in this way.

Professor Pete Walker said: “Straw is a very environmentally-friendly building material because it is renewable and uses a co-product of farming. The crop used to make the straw locks in carbon dioxide as it grows and can be sourced from local farms, saving on transport and minimising the carbon footprint of the building. The recent test result is excellent as it has both confirmed the robustness of BaleHaus and validated the computer model, so avoiding the need for further tests and providing basis for safe and efficient structural design. We hope the data we’re collecting on the BaleHaus will help strengthen the case for the mainstream building industry switching to using more sustainable building materials like straw.”

The ModCell BaleHaus system consists of prefabricated panels infilled with straw bales and is carbon negative in manufacture. Due to the high insulating properties of the panels, the BaleHaus minimises additional heating requirements and could reduce heating bills in housing by up to 85 per cent, and CO2 emissions by 60 per cent. The research work on BaleHaus involves eight industrial partners and has been funded by the Technology Strategy Board and Carbon Connections.

Key Facts

Status Completed
Value 0(m€)
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ModCell
www.modcell.co.uk

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