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To reduce the amount of timber used
on construction sites, we insist our contractors use metal hoardings,
metal formwork and prefabricated building elements. In the past
year, these practices have saved about 63 360 tonnes of timber
(about 1 025 000 tonnes of timber saved so far). This compares with
33 000 tonnes saved in the previous year. |
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We are also making efforts to reduce the use of timber
from non-sustainable sources in our new buildings and in the maintenance
of existing estates. We have consulted with the World Wide Fund for
Nature and have been investigating how we can obtain timber from sustainable
sources.
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To save cement, we tell contractors
to use Pulverised Fuel Ash (PFA) as a partial replacement. After
October 2001, we specified an increase in cement replacement
for foundation works from 25% to 35%. We also allow contractors
to use up to 25% PFA in certain superstructure elements. In
the last year, our contractors saved a further 31 200 tonnes
of cement. We anticipate a further saving of 36 000 tonnes in
the coming year. |
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To conserve natural resources and reduce construction
waste, we have arranged to increase our use of recycled aggregates.
New specifications will be released in the coming year. These will
allow contractors to use more recycled aggregates in construction
works. Our trial use of recycled aggregates in paving blocks is ongoing
and is due for completion next year.
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