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Sustainable Building, Opinion, News, Meaning, Progress, Climate Change
Sustainability in the Built Environment : Information
Sustainable Architecture : Debate
Are we doing enough?
Sustainable Architecture - Building Issues
DISCUSSION
This topic has become controversial and the phrase 'sustainable' and
linked phrases, problematic. Initially sustainable architecture seemed
to have a groundswell of support as the awareness and discussion of
climate change gathered pace. But soon many mainstream suppliers,
architects, contractors, etc. were using the phrase - and underlying
philosophy - in a glib manner. Naturally they quickly wanted to use
the label as it seemed to send the right message, that they cared
about the environment and were not part of the problem. But often
the words were shallow attempts at window dressing and underneath
many practices remained unsustainable.
But the phrase and philosophy has also become controversial not just
due to commercial opportunism but because some figures have questioned
its very basis. In the UK the writer Austin Williams, former AJ Technical
Editor has been highly critical of the sustainable building movement
and also of any shalllow co-opting of the issue by the mainstream.
Issues such as using local materials and labour have also triggered
complex arguments because so many of the issues appear to be difficult
to objectively quantify.
Embodied energy is just one of these issues and has provoked discussions
about the energy usage in moving materials around the world. You would
expect that local materials and local manufacture would be more sustainable
provided the extraction and production are relatively unpolluting
but to really get an accurate answer you would have to produce a complex
matrix. For example, how is the material sourced, cleaned, processed
and transported? What powers these activities?
If you were to compare a specific supply of steel and aluminium, would
the apparently 'more sustainable' aluminium be the winner when you
witness the destruction of rainforest for the plant and access roads,
the silting of the rivers from Bauxite extraction, removal of indigenous
tribes from the area and massive pollution from driving trucks in
and out of the deep jungle?
Initially sustainable architecture seemed to be about quite comprehendable
issues such as using 'natural' energy eg solar power, lots of wood
and high U values. But as the books and conferences have multiplied
there are now a whole range of issues that architects are being asked
to analyse.
Essentially there seem to be no simple comparisons for materials but
there are various websites and specification guides that aim to assist,
eg the Green Guide to Specifications (BRE) or NGS.
The key is to consume less whether it be heat, electricity, water
or products. Sourcing locally and sustainably is potentially useful
but making sure to double check contractors actually build or install
what is specified is what makes this beneficial rather than simply
looking good on the company profile. Thinking about which product/materials
are sustainable prior to specification would help, or indeed showing
flexibility in specification, eg maybe specify beech rather than birch
or larch rather than western red cedar.
We would welcome your views on this debate. We have a slow forum with
texts on issues such as iconic architecture but it would be good to
get some feedback on this topic too. Are we spending too much time
on 'sustainable architecture' issues?
Sustainable Architecture: Text © adrian welch, architect
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