How many logs to make a tonne or what is the av weight per log in various product categories?

[Treemover]

I am just about to undertake some conifer thinning and just doing some figures and calculations. 

Could anyone give me some figures please? What i am after is either a rough weight per log or how many logs to make a tonne. 

 

This is all for SS and some NS first thinnings, low yield class, roughly planted 96-99. 

Pulp 

Stake wood

Pallet

 I doubt there will be much pallet tbh but no harm having some figures for second thin. 

[Treemover]

Ok so here is some figures i got using an online calculator which I think isnt too far off,

So 

pulp 3m >7cm im getting 28kg

stake 1.6 >8cm = 6.5kg

Pallet 2.5 >14cm = 24kg

Sawlog 4.9 >20cm = 83kg

Sawlog 5.5 > 24cm =118kg

 

if anyone could help tell me if these are good enough for ball park that would be great; more madness to follow!

Edited January 1, 2023 by Treemover

[spuddog0507]

1 hour ago, Treemover said:

Ok so here is some figures i got using an online calculator which I think isnt too far off,

So 

pulp 3m >7cm im getting 28kg

stake 1.6 >8cm = 6.5kg

Pallet 2.5 >14cm = 24kg

Sawlog 4.9 >20cm = 83kg

Sawlog 5.5 > 24cm =118kg

 

if anyone could help tell me if these are good enough for ball park that would be great; more madness to follow!

I think some of them weights are way off , i will have a working out session and post back 

[Treemover]

Ah thanks Spuddog. 

[openspaceman]

35 minutes ago, Treemover said:

Ah thanks Spuddog. 

 

While  @spuddog0507looks  you may like to peruse

 

https://cdn.forestresearch.gov.uk/1975/03/fcbk039.pdf

 

I think table 66 will give you much of what you are looking for

[Treemover]

Thanks openspaceman, I have that book and I used to prepare harvest sales or SPs years ago, but as mills pay over the weigh bridge it was more per tonne weight than per m volume. Still thanks for the tip, and I'll give those figures a run two, just for pig iron. Appreciate the reply. 

[Brushcutter]

I think it is in the blue book or the green book has a volume to weight conversion table based on species.  I'll try and find it

[spuddog0507]

6 hours ago, Treemover said:

Ok so here is some figures i got using an online calculator which I think isnt too far off,

So 

pulp 3m >7cm im getting 28kg

stake 1.6 >8cm = 6.5kg

Pallet 2.5 >14cm = 24kg

Sawlog 4.9 >20cm = 83kg

Sawlog 5.5 > 24cm =118kg

 

if anyone could help tell me if these are good enough for ball park that would be great; more madness to follow!

Your weights are a bit out ,

2,5 14cm M/D 35kg

4.9 20cm M/D 142kg

5,5 24cm M/D 230kg, 

If you are doing this by hand ie man and a chainsaw the fence posts are just not worth doing, we havent done any fence posts of that size now for near on ten year as there is just far to much time involved in it for half a days wage, just put all the smaller timber in to the chip stack far easier to handle and stack than the small short stuff, 

[Dan Maynard]

We're his original figures dry wood? I was thinking a 20cm log at 4.9 would be harder to move than 83kg.

 

 

 

 

 

[spuddog0507]

42 minutes ago, Dan Maynard said:

We're his original figures dry wood? I was thinking a 20cm log at 4.9 would be harder to move than 83kg.

 

 

 

 

 

It's a thinning job so fresh felled ,  it wo t be dry by a long way,,