Initial site visit video:

Project group credits:

Wednesday, 26 November 2008

Shaghai Street Furniture

Ideas
"Reduce reuse recycle"
The most ecological process (sustainable) would be to reuse furniture which is being thrown out.
It needs to be able to survive out of doors. One idea is to latex coat the furniture (ideally using natural latex).
Cement production accounts for a massive percentage of greenhouse gases (up to 40% even?) so should be avoided. Using hemp instead of sand and gravel is a more ecological approach (hemcrete see below).
It would be good to use local products/refuse, reusing and customising it for the purposes of the project, either for short term or long term use.
Below info from: http://www.binhaitimes.com/hemp.html
Hemp Concrete & Insulation
Hemp hurds are not only very absorbent, but are also uncommonly rich in silica. When mixed with lime, hemp hurds change from a vegetable product to a mineral. In this mineral state it is often referred to as hemp stone, and it weighs between 1/5 and 1/7 that of cement based concrete. Several hundred houses have been built in Europe using this material. Research is ongoing in the UK and Germany, where hemp hurds have been used for the construction of floors since the mid 1900s. Sometimes the hemp hurds are mixed with lime, water and either gypsum or river sand. When it is poured it hardens, and becomes mould and insect resistant. It can be used in drywall construction between formwork, as an interior and exterior insulation or be poured as a floor. The formwork can be removed within a couple of hours.
One advantage of hemp concrete is that it makes it unnecessary to have several layers of conventional building materials – it is outer and inner wall, and insulation all in one – it can replace bricks or cement-concrete, a vapour barrier, insulation, and plaster board or panelling. All that is needed as a finish is an exterior coat of whitewash to which pigments can be added if desired. The interior surface is an attractive cork-like texture that can be waxed or varnished (using a hemp based varnish).
One of the most popular hemp concrete products is Isochanvre, a French product. The manufacturers claim:
* excellent acoustic insulation
* breathes, prevents condensation
* self-draining and waterproof
* non-flammable (no toxic combustion products)
* resistant to rodents, termites, insects, fungi and bacteria (because of the silica content)
easy to use, flexible and crack-resistant
China is currently the prime producer of hemp textile. China has had an uninterrupted hemp trade for approximately 6000 years.

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