tree cord calculator

[stoz]

Somewhere on the net I saw a calulator that estimated tree diamter to cord volume, anyone have an idea where I might find it?

Thanks

Scott

 

[Robbie]

Is this it ?

http://www.state.me.us/ag/firewood.html


Robbie

 

[KarynAnne]

Smalian's formula:

V = [0.0054 (d + L/20)²] L

V = cubic feet
d = diameter at small end of log
L = length of log

Divide the whole thing out by aproximately 66 cubic feet. (Average volume of unpeeled hardwoods per cord.) This will give you an aproximation of cordage.


www.IntegratedStewardship.com
(shameless plug)

 

[KarynAnne]

approximately

and

approximation

ahem, thank you

 

[Gooserider]

Is this it ?

http://www.state.me.us/ag/firewood.html


Robbie

I don't think so, That's a nice calculator for figuring out how many cords you have in a wood pile, which is useful but not what I think Stoz was after was a way to estimate how much wood he would get out of a tree that hadn't been cut down yet. KarynAnne's formula is probably closer, though a bit harder to apply (hard to find the small end diameter when the small end is way up the tree...)

I'd probably use her formula measuring the big end and averaging that with as small a log diameter as I thought I'd want to cut up and burn...

Gooserider

 

[BrotherBart]

And of course if that log happens to be standing straight up in the air and you want to know its length then we go back to the Boy Scout days.

Take a pencil or or any old staight piece of anything, and back up until you have the pencil tip at the top of the tree and the eraser at the bottom of the tree in your view. Then hold the eraser end even with the bottom of the tree and rotate the pencil to level with the ground. Then proceed to that point on the ground and measure the distance back to the tree.

Viola! The length of the log that you are going to cut down.

 

[Hogwildz]

And of course if that log happens to be standing straight up in the air and you want to know its length then we go back to the Boy Scout days.

Take a pencil or or any old staight piece of anything, and back up until you have the pencil tip at the top of the tree and the eraser at the bottom of the tree in your view. Then hold the eraser end even with the bottom of the tree and rotate the pencil to level with the ground. Then proceed to that point on the ground and measure the distance back to the tree.

Viola! The length of the log that you are going to cut down.

Wow I never was taught that in the Scouts, or maybe I forgot LOL.
BTW Home Peehole hasn't lower the Englander wood burners for clearance yet . They did have the Englander gas on clearance, but I don't want that.

 

[MALogger]

You could use a biltmore stick or a hypsometer to estimate the usable height.
A more accurate way might be to cut it down saw it to lengths split it and stack it then you will know what that tree will yield!

But seriously the easiest way is keep records of what trees of certain size yield then you can roughly estimate what a given tree holds for volume by recorded experience!

Craig

 

[JayY]

The US forest service published a table you could use based on DBH (diameter at breast height) and log length to 4" inside bark diameter. It is better than nothing. I have pasted it below. Hopefully it stays formatted. I found it online somewhere.


Tree Volume Table Commonly Used to Estimate Cords Per Tree.

Height in Number of 8-Foot Bolts
dbh
(in.) 1 2 3 4 5 6 7 8

Volume in Cords/Tree
6 0.02 0.03 0.04 0.06
8 0.03 0.05 0.07 0.09 0.12 0.14
10 0.05 0.07 0.10 0.13 0.17 0.20 0.24 0.27
12 0.07 0.10 0.14 0.18 0.22 0.27 0.32 0.36
14 0.10 0.13 0.18 0.23 0.29 0.35 0.42 0.47
16 0.12 0.17 0.22 0.29 0.36 0.44 0.52 0.59
18 0.15 0.20 0.27 0.35 0.44 0.53 0.63 0.72
20 0.18 0.25 0.32 0.42 0.52 0.63 0.76 0.85
22 0.22 0.29 0.38 0.49 0.61 0.74 0.88 1.00

Note: Utilization standards: Volume is stem volume above 1-foot stump in standard, unpeeled cords. The standard cord is 4 x 4 x 8 feet. Height is number of 8-foot bolts to a variable top diameter not less than 4 inches inside bark. Applicable to all species except cedar. Source: U.S. Forest Service, North Central Forest Experiment Station.

Edit Bah! The formatting stinks. I did a google search and here it is on Univ. of Maryland website

(broken link removed to http://www.agnr.umd.edu/MCE/Publications/Publication.cfm?ID=77)

 

[stoz]

Yes I am looking for a standing tree estimate of cords of firewood, I know I have seen it but can't find it.

Scott

 

[Gooserider]

Yes I am looking for a standing tree estimate of cords of firewood, I know I have seen it but can't find it.

Scott

The link that JayY pointed to just above your post has it, look down near the end.... It isn't a "calculator" as such, just a lookup table - tree diameter at chest height, height of tree, gives approximate cords of firewood. The hard part is getting up the tree with the tape measure. :gulp: :lol:

Gooserider

 

[stoz]

I think I get it, so if you have a 64' tree that is 22", then you have a full cord?

Scott

 

[stoz]

Also, that is for straight tree few limbs I'm guesssing? The table I saw was a general thing that said if you have a _" diameter tree you have x # cords, I would think it would be fairly accurate since forest trees grow taller and open trees branch alot and don't grow as tall.

Scott

 

[Andre B.]

The US forest service published a table you could use based on DBH (diameter at breast height) and log length to 4" inside bark diameter. It is better than nothing. I have pasted it below. Hopefully it stays formatted. I found it online somewhere.


Tree Volume Table Commonly Used to Estimate Cords Per Tree.

         Height in Number of 8-Foot Bolts
dbh
(in.)   1        2        3        4        5        6        7        8

Volume in Cords/Tree
6      0.02     0.03     0.04     0.06                        
8      0.03     0.05     0.07     0.09     0.12     0.14            
10     0.05     0.07     0.10     0.13     0.17     0.20     0.24     0.27
12     0.07     0.10     0.14     0.18     0.22     0.27     0.32     0.36
14     0.10     0.13     0.18     0.23     0.29     0.35     0.42     0.47
16     0.12     0.17     0.22     0.29     0.36     0.44     0.52     0.59
18     0.15     0.20     0.27     0.35     0.44     0.53     0.63     0.72
20     0.18     0.25     0.32     0.42     0.52     0.63     0.76     0.85
22     0.22     0.29     0.38     0.49     0.61     0.74     0.88     1.00

Note: Utilization standards: Volume is stem volume above 1-foot stump in standard, unpeeled cords. The standard cord is 4 x 4 x 8 feet. Height is number of 8-foot bolts to a variable top diameter not less than 4 inches inside bark. Applicable to all species except cedar. Source: U.S. Forest Service, North Central Forest Experiment Station.

Edit Bah! The formatting stinks. I did a google search and here it is on Univ. of Maryland website

(broken link removed to http://www.agnr.umd.edu/MCE/Publications/Publication.cfm?ID=77)

Fixed the formating.