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ICON Woodmiles indexes
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ICON Woodmilege (m3*)
ICON Woodmileage L (m3*)
ICON Woodmileage CO2 (kg-CO2)
ICON Knowledge level of logistics stops (%)
 
ICON Calculation of Woodmiles
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ICON The volume of timber used
ICON Collecting information of transportation
ICON Calculation of Woodmiles indexes
 
ICON Evaluation of the demonstration
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ICON Level of local timber utilization
ICON Traceability of timber
ICON Transportation energy of timber
 
ICON Manual for Calculation of Woodmiles indexes
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waku
Calculation of Woodmiles < Woodmiles indexes >
waku

Woodmiles, as easily supposed by the word gwoodh and gmilesh, is a new environmental index on the transportation distance of timber. Woodmiled indexes are categorized into 4 definitions by its each purpose.

Woodmilege (m3*)
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gWoodmilege (m3E)h is calculated by multiplying the actual transportation distance of timber used for buildings or products (km) by the volume of it (m3). It is a macro-index to show the reality of timber consumption nation and world-wide.
gWoodmilesh refers to the actual distance of timber transportation. However, considering the reality that houses are generally built with many kinds of timber which come from different harvest places through different logistics routes and that they are transported sometimes in big volume and sometimes in small volume depending on the route, which makes the analyze of timber transportation less precise, we calculate gWoodmileageh of all the routes first, then divide it by the total volume of timber. We define the figure as gWoodmilesh and use it as a reference of average distance of timber transportation for the applicable houses and wooden products.

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Woodmileage L (m3E)
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The linear distance, not the actual distance, from the place of harvest of applicable timber used for buildings and products to the consumption site multiplied by the volume of timber used is called gWoodmilege L (m3E)h (m3E). Compared with gWoodmilege (m3E)h, which is calculated out using the actual distance of transportation, Woodmilege L is a more macro-index. This index is used mainly study fields such as analyze of the trend of our domestic timber transportation. Like Woodmilege, the calculated average distance is called gWoodmiles Lh.
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Woodmileage CO2 (kg-CO2)
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If the information of the volume and distance of timber transported and the types of transportation is all available, we can calculate the amount of energy consumption in the transportation process to some extent. We call this amount of energy consumption gWoodmileage CO2h, expressed in terms of the amount of CO2 emitted in the process. It is calculated by multiplying CO2 emission coefficients of the types and forms of transportation (road, sea, rail etc) by Woodmileage.
Like Woodmileage, the average amount of CO2 emission which is calculated by dividing the Woodmileage CO2 by the total volume of timber is called gWoodmiles CO2h

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Knowledge level of logistics stops (%)
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The last of the Woodmiles indexes is gKnowledge level of logistics stops (%)h, which represents the level of traceability of timber. In principle, this index demands the transparency of all the logistics histories of timber transportation. It is unfortunately true that it is very rare that we can trace all the logistics histories of timber used. When calculating, for example, when only the information of roundwood market is available, but not rest of the logistics stops before it, we calculate out the figure on an assumption, gthis timber is prefectural, so the distance from the mountain is about this longh. Therefore, Knowledge level of logistics stops can be defined as an index to demonstrate the traceability of timber upon calculating of the ratio of knowable route taken by timber from the place of harvest to consumption site. This is a step to make the indexes more reliable by demonstrate the traceability and to promote consciousness toward the importance of traceability to timber industry.
It refers to the degree, expressed as a proportion of total volume of timber whose logistics histories are clear in the total volume of timber used. It is calculated by multiplying the volume of the applicable timber by the ratio of the Woodmiles of the applicable timber.
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