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| What is sustainable building?
In a few words, careful and responsible use of the earth's
limited resources; recycling of materials where this is
practical, economic or aesthetically desirable; understanding
that not only direct but also indirect consumption can
be wasteful - for example, the use of electric power where
sunlight is a practical alternative.
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Thick reinforced
concrete walls, constructed with styrofoam/cement forms.
The saving in lumber and drywall is dramatic. Earthquake
and fire-resistance are greatly increased. Sound and thermal
qualities are much improved. Susceptibility to damp and
mold are much reduced. Insect and vermin infestation within
the walls is nearly eliminated. Used styrofoam is recycled
instead of ending up in landfills.
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Heat rises.
Designing a natural collection area, such as a small
tower, will create natural air movement in hot summers
by venting hot stale air and drawing in fresh air.
Air conditioning becomes natural, instead of forced,
sharply reducing power consumption. In winter, warm
air can be collected and recycled through the HVAC
system. |
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Careful planning of the orientation of the building on
the site increases the effectiveness of active and passive
solar use. Shade from tall trees on the west side reduces
excessive heat in summer when the sun is high. In winter,
when the sun is lower, light and some warmth can filter
through the lower branches.
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Operable
window shutters save
energy both in summer and winter. Overhanging eaves help
to keep a building cool as well as attractive.
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Solar panels are not cheap, but subsidies
in many jurisdictions can make them a worthwhile long
term investment and the technology is rapidly improving.
These subsidies are not simple government hand-outs: with
population growth and increasing power consumption they
are an economic investment that can significantly delay
the much greater investment in the construction of new
powerplants.
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