Wood as a material. When constructing a furniture, a building or a bridge, we might choose wood.
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Transcript of Wood as a material. When constructing a furniture, a building or a bridge, we might choose wood.
![Page 1: Wood as a material. When constructing a furniture, a building or a bridge, we might choose wood.](https://reader035.fdocuments.in/reader035/viewer/2022062511/55182cad55034684678b4d00/html5/thumbnails/1.jpg)
Wood as a material
![Page 2: Wood as a material. When constructing a furniture, a building or a bridge, we might choose wood.](https://reader035.fdocuments.in/reader035/viewer/2022062511/55182cad55034684678b4d00/html5/thumbnails/2.jpg)
When constructing
a furniture, a building or a bridge,we might choose
wood
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or we might chooseconcrete, steel or cement
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A comparison of materialsWOOD
• Made by nature• The production method
(the photosynthesis): – is 100 % clean– absorbs CO2
– requires no energy– free of charge
• Stores carbon• Renewable
CONCRETE, STEEL, CEMENT
• Made by humans• The production method
(industrial): – causes pollution– emits CO2 – needs a lot of energy– costs money
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Using wood as a building material:
• will help us reduce our carbon footprints
• may be part of the solution to our greatest environmental problem, – global warming and climate changes
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CO2 emission from production of 10 litre
Glulam (tim-ber)
Concrete Cement Steel
Kg CO2 0.2 2.8 7 63
5
15
25
35
45
55
65
0.2 2.87
63
Kg e
mis
sion
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Substitution
When 1 cubic metre of concrete is replaced with 1 cubic metre of timber…
Replace
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It reduces the CO2 emission by 1 tonne
The size of a balloon containing 1 tonne CO2
10,7 m
1,75
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The average emission of CO2 per capita in Europe, is…
1 2 34
5 6 7 89 tonnes
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While the sustainable amount, is
1 tonne CO21 person
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• A new tree must be planted for every one cut
• Make sure annual growth is equal to or larger than the amount taken out
• Strict rules and regulations must be followed,– to maintain the natural biodiversity– to ensure that the next generation
also may enjoy our forests
Conditions for using wood - Sustainable forestry:
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Plant a tree
Use wood
Take care of our forests
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1. Nuttakit2. Koratmember 3. Kai4107
Credits for photographs in slide 4- from top to bottom