I don't have the answer BTW just a rough guesstimate based on the average weight of wet (fresh sawn) Douglas Fir of 49lbs per cubic foot which I found on an American website. . It is 1.5m long with a diameter of 36cm. Answer came out at 266kg
And was the only usable piece from this Black pine
We also had a couple of Douglas Fir trees down which has left me with these. With are between 2 and 2.5m long, diameter 30cm+
A local sawmill will cut them for me (although I have not had a price yet). I have access to a braked trailer and my car will tow a max of 1200kg.
I'd like to have a reasonable level of confidence about how many of these logs I could safely load at a time.
I'd like to have them cut into boards approx 3" thick which I will would like to use to make a high raised bed (1m high).
The small stuff from the those trees are being stripped
and will either go around the potager
and be used to make a raised bed, log cabin style