booardfeet calculator.?

[woodyman666]

So I have decided to use some of the logs from a new yard clearing project to finish off the woodwork on "the man room" over top of the garage.. Till now all the hemlock has gone into the outdoor boiler... Im am looking to figure how many logs i will have to deliver to the mill to get my 600 boardfeet that i need. So far i am cutting all logs to 12ft 3".(the lenght my local mill said to cut for a 12 footer) and the diameters are all between 16 and 14 inches... Figure there is alot of fluctuations but I am handpicking the straightest and best logs so shouldnt be much waste. Figure someone could get me a close guesstimate. Thanks

 

[Bryan Hosford]

calc

Table 1. Tree Board foot volume (Scribner rule) to a variable top diameter in the Lake States based on the number of 8-foot bolts in the tree.*

DBH 1 2 3 4 5 6 7 8 9 10
Inches BOARD FEET
10 20 30 50 60 -- -- -- -- -- --
11 -- 40 60 80 100 120 -- -- -- --
12 -- 40 60 90 110 140 160 180 -- --
13 -- 50 70 100 130 160 180 210 240 --
14 -- -- 80 110 140 180 210 240 270 310
15 -- -- 90 120 160 190 230 270 300 340
16 -- -- 100 140 170 210 260 300 340 380
17 -- -- 120 160 200 250 300 340 390 440
18 -- -- 130 180 230 280 340 390 450 500
19 -- -- 150 200 260 320 390 450 510 570
20 -- -- 180 230 290 360 440 500 570 640
21 -- -- -- 260 330 410 490 560 640 720
22 -- -- -- 290 360 450 540 620 710 800
23 -- -- -- 320 400 500 600 690 790 880
24 -- -- -- 350 440 550 660 760 860 970
25 -- -- -- 380 490 600 720 830 940 1060
26 -- -- -- 420 530 650 790 900 1030 1160
27 -- -- -- 450 580 710 860 980 1120 1260
28 -- -- -- 490 620 770 930 1060 1210 1360
29 -- -- -- 530 670 830 1000 1150 1310 1470
30 -- -- -- 580 720 890 1080 1240 1410 1580
*Source: Burk, T.E., and A. R. Ek. Approximation and extension of the Lake States composite taper and volume tables. (In preparation)
Board foot volume is assumed to be the gross scale above a 1-foot stump to a top diameter inside the bark that is the larger of either 8 inches or 50 percent of the tree DBH. The standard bolt is assumed to be 8 feet in length. Volumes outside the tabulated range may be estimated by applying the following formula to each 8-foot bolt and then summing values to provide tree volume estimates:

Bolt volume (board feet) = 0.395 d2 - d - 2. Where d = small end inside the bark diameter of the bolt, in inches.

 

[Ted J]

So I have decided to use some of the logs from a new yard clearing project to finish off the woodwork on "the man room" over top of the garage.. Till now all the hemlock has gone into the outdoor boiler... Im am looking to figure how many logs i will have to deliver to the mill to get my 600 boardfeet that i need. So far i am cutting all logs to 12ft 3".(the lenght my local mill said to cut for a 12 footer) and the diameters are all between 16 and 14 inches... Figure there is alot of fluctuations but I am handpicking the straightest and best logs so shouldnt be much waste. Figure someone could get me a close guesstimate. Thanks

if you can get 10 14" of those logs that should get you there with a little extra, so cut some to spare just in case.

Try this:
http://www.woodweb.com/cgi-bin/calculators/calc.pl?calculator=log_volume

the Scribner scale will get you somewhere between the Doyle and International scale. It might also depends on what scale the mill is using to base their rates, and what you get in the end.

Good luck and have fun,
Ted

 

[woodyman666]

so thats about what i just figured. That schribner calculator scared me so i sort of penciled out a 16"circle drew in the slab trim and marked of 1 inch increments and multiplied myself. I always hated math and loved gym and shop!!!!!!! Hands on.... Thanks