Service Forester's Handbook

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====== Log Volume Tables ======
=====International Log Rule - 1/4 Inch, Form Class 78 =====
=====Gross Tree Volume=====
====Volume (Board Feet)By Number Usable 16-Foot Logs====
^DBH (Inches) ^1    ^1 1/2  ^2    ^2 1/2  ^3    ^3 1/2  ^4    ^4 1/2  ^5    |
|10---------- |36   |48     |59   |66     |73   |--     |--   |--     |--   |
|11---------- |46   |61     |76   |86     |96   |--     |--   |--     |--   |
|12---------- |56   |74     |92   |106    |120  |128    |137  |--     |--   |
|13---------- |67   |90     |112  |130    |147  |158    |168  |--     |--   |
|14---------- |78   |105    |132  |153    |174  |187    |200  |--     |--   |
|15---------- |92   |124    |156  |182    |208  |225    |242  |--     |--   |
|:::
|16---------- |106  |143    |180  |210    |241  |263    |285  |--     |--   |
|17---------- |121  |164    |206  |242    |278  |304    |330  |--     |--   |
|18---------- |136  |184    |233  |274    |314  |344    |374  |--     |--   |
|19---------- |154  |209    |264  |311    |358  |392    |427  |--     |--   |
|20---------- |171  |234    |296  |348    |401  |440    |480  |511    |542  |
|:::
|21---------- |191  |262    |332  |391    |450  |496    |542  |579    |616  |
|22---------- |211  |290    |368  |434    |500  |552    |608  |647    |691  |
|23---------- |231  |318    |404  |478    |552  |608    |663  |714    |766  |
|24---------- |251  |346    |441  |523    |605  |664    |723  |782    |840  |
|25---------- |275  |380    |484  |574    |665  |732    |800  |865    |930  |
|:::
|26---------- |299  |414    |528  |626    |725  |801    |877  |949    |1,021|
|27---------- |323  |448    |572  |680    |788  |870    |952  |1,032  |1,111|
|28---------- |347  |482    |616  |733    |850  |938    |1,027|1,114  |1,201|
|29---------- |375  |521    |667  |794    |920  |1,016  |1,112|1,210  |1,308|
|30---------- |403  |560    |718  |854    |991  |1,094  |1,198|1,306  |1,415|
|:::
|31---------- |432  |602    |772  |921    |1,070|1,184  |1,299|1,412  |1,526|
|32---------- |462  |644    |826  |988    |1,149|1,274  |1,400|1,518  |1,637|
|33---------- |492  |686    |880  |1,053  |1,226|1,360  |1,495|1,622  |1,750|
|34---------- |521  |728    |934  |1,119  |1,304|1,447  |1,590|1,727  |1,864|
|35---------- |555  |776    |998  |1,196  |1,394|1,548  |1,702|1,851  |2,000|
|:::
|36---------- |589  |826    |1,063|1,274  |1,485|1,650  |1,814|1,974  |2,134|
|37---------- |622  |873    |1,124|1,351  |1,578|1,752  |1,926|2,099  |2,272|
|38---------- |656  |921    |1,186|1,428  |1,670|1,654  |2,038|2,224  |2,410|
|39---------- |694  |976    |1,258|1,514  |1,769|1,968  |2,166|2,359  |2,552|
|40---------- |731  |1,030  |1,329|1,598  |1,868|2,081  |2,294|2,494  |2,693|

Note: for each form class above or below 78 determine approximate volume by adding or subtracting 3% of total volume.
Service Forester's Handbook

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