working out how many tonnes

[Brushcutter]

Ok i have some volume/weight conversion factors for fresh felled timber

 

Scots 0.98 Corsican 1.0 Lodgepole 1.05

Sitka 1.08 Norway 1.04 European Larch 1.11

Japanese/hybrid 1.20 Douglas 1.15 Hemlock 1.07

WRC/Lawsons 1.12 Grand Fir 1.17 Noble Fir 1.07

Oak 0.94 Beech 0.97 Ash 1.28

Sycamore 1.20 Birch 1.07 Elm 0.97

 

 

The volume equation is:

Vol= (pie x D^2)/40,000x L

where D is diameter and L is length

 

So the volume of log is around 0.63 m3

So if its Ash then its around 0.8tonnes.

 

Thats what the book says.

[Simon Rotheram]

 

How do you work out how many tonnes of wood are in a trunk?

 

Weigh it!

[Ben Ballard]

nice one bush cutter thought i would ad some dryweights 15%moisture content

 

pine 528.6 kg per m3

larch 495.5 kg per m3

oak 736.8 kg per m3

ash704 .8 kg per m3

beech 720kg per m3

elm 688.7kg perm3

[slack ma girdle]

I have given up selling by weight, i just go by volume as it is reasonably easy to work out, and does not change with time.