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Headline

‘Architecture is political; it’s time for the timber revolution’

Comment

Calculations that state that timber has three times the embodied energy as timber only consider the energy in production. While this is not false, it obscures the full carbon emissions, discounting the production of carbon dioxide in the manufacture of concrete (calcium carbonate is thermally decomposed, producing lime and carbon dioxide). More importantly there is not consideration of the CO2 absorbed during growth and stored in the timber. All the figures we use in our calculations include this and are net of production and transportation emissions. Concrete and steel account for around 11.5% of annual global CO2 emissions. The average carbon footprint of a UK home, aggregated across housing types and construction method is 21 tonnes CO2e. Comparing this with a CLT built home results in a potential saving of 40 tonnes CO2e per home. Most agencies focussing on combatting climate change, such as the Committee for Climate Change, have identified planning more tress as the single most effective way of reducing global warming.

Posted date

5 December, 2018

Posted time

3:57 pm

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