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Soft wood, volume per tonne.


Alycidon
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I have been selling soft wood logs for a while and want to pay the owner of the logs a fair price for his timber that I have used and sold.

 

I process into cubic meter bags, season in the bags. I am aware of the 1.3 - 1.5 cube of hardwood to the tonne, what is a fair figure for softwood?, 1.5 or a bit higher?..

 

Thanks

 

 

A

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Depends on species as sitka is light per tonne but things like scots and some pines are v heavy

 

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Scots, larch, spruce in the main. Judging by the way cubes of hard and soft roll off the back of the delivery trailer I would have said that dry the soft is maybe two thirds the weight of hard.

 

A

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I process into cubic meter bags, season in the bags. I am aware of the 1.3 - 1.5 cube of hardwood to the tonne, what is a fair figure for softwood?, 1.5 or a bit higher?..

 

This is difficult because there is variation between different stands and parts of the tree. FC mensuration branch did a lot of work on this in the late 60s, from their booklet 39 of 1975 they suggest white softwoods ( spruce, fir hemlock) have basic densities in the low 300skg/m3% e.g. sitka 350kg/m3, whilst pines with more lignin and heartwood 400kg/m3 and the dark resinous woods like douglas and larch 450kg/m3 whereas oak and beech are around 550kg/m3. If the woods are all at the same moisture content and the same stacking density then the ratios of weights should be in proportion to these basic densities.

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