# Log Volume

Charts for International 1/4-inch and Scribner log volume. May 4, 2001

International 1/4-Inch Log Volume (Board Feet)

Courtesy: Professor Gene Wengert

Note: An explanation follows the table

 Dia.(inches) Log Length (feet) 6 8 10 12 14 16 6 5 10 10 15 15 20 7 10 10 15 20 25 30 8 10 15 20 25 35 40 9 15 20 30 35 45 50 10 20 30 35 45 55 65 11 25 35 45 55 70 80 12 30 45 55 70 85 95 13 40 55 70 85 100 115 14 45 65 80 100 115 135 15 55 75 95 115 135 160 16 60 85 110 130 155 180 17 70 95 125 150 180 205 18 80 110 140 170 200 230 19 90 125 155 190 225 260 20 100 135 175 210 250 290 21 115 155 195 235 280 320 22 125 170 215 260 305 355 23 140 185 235 285 335 390 24 150 205 255 310 370 425 25 165 220 280 340 400 460 26 180 240 305 370 435 500

Notes: This is based on the small end diameter, inside bark. For oval logs, measure the average diameter.

This scale is really close to the actual yield of lumber in a circular mill with 1/4-inch wide teeth. For a band mill, actual yields will be a little higher. Often logs are bought and sold on the Doyle or Scribner scales--these two scales are very close to each other. They underestimate the volume in smaller logs. This is useful for the sawmill as smaller logs have more handling costs. So, you could either scale the logs with the International 1/4-inch scale but then pay a lower price for small logs due to the increased handling, or you could scale the logs lower and then pay the same \$/BF for all logs regardless of size.

Logs may also be graded, which is a quality measure, not volume measure.

Scribner Log Volume (Board Feet)

 Diameter (inches) Log Length (feet) 6 8 10 12 14 16 6 5 5 10 10 10 20 7 5 10 10 20 20 30 8 10 10 20 20 20 30 9 10 20 30 30 30 40 10 20 30 30 30 40 60 11 20 30 40 40 50 70 12 30 40 50 60 70 80 13 40 50 60 70 80 100 14 40 60 70 90 100 110 15 50 70 90 110 120 140 16 60 80 100 120 140 160 17 70 90 120 140 160 180 18 80 110 130 160 190 210 19 90 120 150 180 210 240 20 110 140 170 210 240 280 21 120 150 190 230 270 300 22 130 170 210 250 290 330 23 140 190 230 280 330 380 24 150 210 250 300 350 400 25 170 230 290 340 400 460 26 190 250 310 370 440 500