Sustainability: multi-faceted
Converting all facets to one ‘currency’
People believe what they want to believe And search out arguments and data to support this belief.
Most things don’t grow on trees
CO2 is key raw ingredient in the primary production
Sir Alec Reed Academy, Ramboll engineers “The development used approximately 1075m3 of timber, which equates to an embodied C02 of 217 tonnes. This is quarter of the embodied C02 within the structure when compared to the next feasible traditional construction method. Taking account the sequestered carbon within the timber the structures will actually have a negative embodied carbon of 640 tonnes of C02.”
Longevity: 60 years, 100 years, 900 years?
Longevity: Essex timber frame
Just need to get the detailing right
TRADA published design guidance
Waste hierarchy and re-cycling
All of a log is used – for different markets
Computer control for maximum yield
Wood recycling rates: end of life 2012 Wood Recylers’ Association Stats 54% Recycled or energy 29% Landfill 5% Exported – mainly for energy 12% Burned on site or land recovery Driven by markets and waste taxes and improving all the time
Raw ingredient is CO2 100% recycling rate ultimately CO2 equiv. to Iron ore Sawn timber equiv. to Rolled steel
Energy consumption during processing
Energy use of building Many passivhauses are in timber frame
Thermal mass
When does high thermal mass help you?
The solution?
Place-making
The reality A £300k house needs 2 incomes and generally 2 cars. It would be nice to have some friends or relatives round – and for them to be able to park!
Timber LCA Data
Timber LCA data: Cross laminated timber
TRADA membership t: 01494 569603 e: membership@trada.co.uk