ProVillage


ECO-BUILDING – PART 3: Strawbales are outstanding as insulation!

The construction of strawbale homes has grown enormously around the world. The reason for this is the cost-effectiveness of the building material, and that the normal supporting structures and the clay-plastered straw bales replace many other materials, such as tile or wood cladding, wind-proof boards, insulation, plastics and decorative boards.

A large straw bale house - Wikipedia

Even large houses, such as exhibition halls of thousands of square meters, are being built using straw bales.

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From our three separate ’ProVillage’ -documents you can get a relatively clear idea about our project:

The documents can be found both in Finnish and in English.

Downloading might take some time, because the files have an approximate of 130 images.

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Wikipedia-Matawa_straw_bale_library

Here a library has been constructed using straw bales.  The wall support structures have been crafted for the windows. After this the walls have been plastered with a clay and sand mixture to leave it to a distinctive light colour.

straw-bale-house-window-installetion

The supporting structures are made in the same fashion as in the usual building of a house. Here a window-area has been prepared for the application of the external render.The window benches and the window frames are connected firmly together to the supporting structure. In the meantime, the ‘packages’ of straw are tightened and ‘barbered’ to a uniform surface.

Straw-bale-house-under-construction

The window benches and the window frames are connected firmly together to the supporting structure. In the meantime, the ‘packages’ of straw are tightened and ‘barbered’ to a uniform surface.

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The insulation capability of a straw bale structure

The Finnish thermal insulation requirements will tighten remarkably by the year 2010.

”The U-value (or U-factor), more correctly called the overall heat transfer coefficient, describes how well a building element conducts heat. It measures the rate of heat transfer through a building element over a given area, under standardized conditions. The usual standard is at a temperature gradient of 24 C°, at 50% humidity with no wind (a smaller U-value is better). U is the inverse of R with SI units of W/(m²•K)”

Source:  http://en.wikipedia.org/wiki/U-value#U-value

The U-value (previously known as the K-value) in part C3 of the collection of building regulations. —– The U-value is to indicate the thermal insulation of various structures in a construction.

The smaller the U-value, the better the insulative capabilities of the material.

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PASSIVE HOUSE:

“The term passive house (Passivhaus in German) refers to the rigorous, voluntary, Passivhaus standard for energy efficiency in buildings. It results in ultra-low energy buildings that require little energy for space heating or cooling”

Source: http://en.wikipedia.org/wiki/Passive_house

All or nearly all of the heat energy needed  is obtained from solar energy and the heat generated from the living in the house.

A passive house does not have an actual heating system. The outer shell of the house has to be well insulated and tight.

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550-1

The pictures above and below have been taken from a guide book which is published by Amazonails, which also can be downloaded in PDF-format from:

http://www.amazonails.org.uk/UserFiles/files/strawbaleguide.pdf

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The following is a table of summary:

The tightening demands on external insulation of various building materials

building regs

.

The situation is such that if one was to use 45 cm of mineral wool on a wall, that would also fall into the requirements of a passive house, but at the same time would be very expensive.

So it can be deducted that in reality strawbales are the best and most cheapest insulation material, falling greatly below the norms with its values even under tightened circumstances.

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Here you can find a lot of literature in English on the topic:

http://www.amazonails.org.uk/?contentId=59

Pictures :  http://www.StrawBale.com and http://www.LearnStrawBale.com

An information package can also be found there which can be distributed freely.

Videos can be seen here => http://www.StrawBale.com/videos


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Eco-building – Part 2: Is it possible to build a 10.000 €uro house, which can also be lived in during the winter?

The objective is to build a house in accordance with the regulations and norms of the European Union, while not costing more than 10.000 €. The materials to be used are stone, strawbales, material obtained from the thinning of a forest, recycled materials, clay and sand.

The calculation does not include:

  • The price of the lot.
  • The road to the lot.
  • Transport, i.e. the trasportation of the raw materials to the building site (varies remarkably and is case specific)
  • Supply of electricity and Internet to the site.
  • The building of possible machines and apparatus for construction.
  • The required inspection fees and similar fees of various regions (which vary remarkably according to region).
Picture: Tero Syvänen

Picture: Tero Syvänen

Included in the calculations are:

  • 70 sqm of heated space
  • 50 sqm of covered cold space
  • Water input/output, plumbing
  • The treatment of ‘black’ and ‘grey’ water
  • A composting toilet
  • Electrical instalments, made mainly up of a great number of sockets and lighting spots
  • The heating and ventilation system
  • [For the waterproofing of the roof, an approximate of 1000 € is intended to be allocated, but this information is slightly unsure]
  • Doors and windows
  • The facilities required for the kitchen
  • Shower facilities
  • Flooring
  • Paint and other material required for the decoration of the interior
  • A lot of work

_______________________________

From our three separate ’ProVillage’ -documents one gets a relatively clear idea about our project:

The documents can be found both in Finnish and in English.

The downloading might take a while, because the files have an approximate of 130 images.

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ProVillage

ProVillage is a venture with an aim of establishing a community for artisans in Heinävesi, Finland. The venture is in planning at this point and we are looking for interested participants for the project. More information can be found from the download links below. The file sizes are a result of over 130 pictures included in the material.

In English English

download button provillage ENG A general introduction of the project (PDF file 10 MB)

download button provillage ENG Follow-up I (PDF file 12 MB)

download button provillage ENG Follow-up II (PDF file 14 MB)

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For even more information write to:

provillage2010@gmail.com
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ProVillage on hanke, jonka tarkoituksena on perustaa käsityöläistyhteisö, vaalien ympäristöystävällisiä arvoja ja rakennustapoja sekä tiedottaa yhteisön rakennusprosessista. Alla periaatteelliset näkökannat, tiedostot sisältävät yli 130 kuvaa, joten lataus saattaa kestää jonkin aikaa.

Suomeksi Suomeksi

download button provillage FIN Yleinen esittely projektista (PDF-tiedosto 10 MB)

download button provillage FIN Jatko I (PDF-tiedosto 12 MB)

download button provillage FIN Jatko II (PDF-tiedosto 14 MB)

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Lisätietoja saa kirjoittamalla osoitteeseen:

provillage2010@gmail.com
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