Service Forester's Handbook

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====== Volume Conversion Factors (Int. 1/4 and Standard Cords) ======
====Int. 1/4" Rule (BAF-20)====
^Form Class 79                                ^^^^^^^|
^Ave. ^Number Logs per Average Tree            ^^^^^^|
^DBH  ^1   ^1 1/2 ^2    ^2 1/2 ^3    ^3 1/2  ^4      |
|8    |573 |515   |458  |401   |--   |--     |--     |
|9    |634 |558   |509  |462   |415  |--     |--     |
|10   |697 |611   |559  |477   |470  |--     |--     |
|11   |727 |636   |591  |539   |506  |--     |--     |
|12   |738 |653   |611  |560   |536  |480    |449    |  
|13   |759 |679   |634  |585   |553  |508    |477    |
|14   |767 |685   |645  |598   |567  |524    |493    |
|15   |774 |695   |652  |609   |581  |543    |513    |
|16   |773 |696   |655  |612   |587  |550    |523    |
|17   |786 |710   |672  |632   |604  |567    |539    |
|18   |792 |717   |679  |638   |613  |575    |549    |

Volume per acre = (Sum of # logs X Factor)/No. Sampling points

Factor of 600 for average timber, over estimates in tall timber, 
underestimates in short timber.

====Pulpwood Volume Conversion Factors for Standard Cord====
^(Prism BAF-10)                                        ^^^^^^^^^^^^|
^Ave. ^Number 5-foot Bolts per Average Tree             ^^^^^^^^^^^|
^DBH  ^1   ^2   ^3   ^4   ^5   ^6   ^7   ^8   ^9   ^10  ^11  ^12   |
|4    |.56 |.46 |.43 |--  |--  |--  |--  |--  |--  |--  |--  |--   |
|5    |.69 |.51 |.45 |.42 |.40 |--  |--  |--  |--  |--  |--  |--   |
|6    |--  |.51 |.45 |.42 |.40 |.38 |.37 |.37 |--  |--  |--  |--   |
|7    |--  |--  |.44 |.41 |.39 |.38 |.37 |.36 |.35 |--  |--  |--   |
|8    |--  |--  |.43 |.40 |.38 |.37 |.36 |.35 |.35 |.35 |.34 |.34  |
|9    |--  |--  |--  |.39 |.37 |.36 |.35 |.35 |.34 |.34 |.34 |.33  |
|10   |--  |--  |--  |.39 |.37 |.36 |.36 |.35 |.34 |.34 |.34 |.34  |
|11   |--  |--  |--  |.38 |.37 |.36 |.35 |.35 |.34 |.34 |.34 |.33  |
|12   |--  |--  |--  |.38 |.37 |.36 |.35 |.34 |.34 |.34 |.34 |.33  |
|13   |--  |--  |--  |.35 |.34 |.33 |.32 |.32 |.32 |.31 |.31 |.31  |
|14   |--  |--  |--  |.37 |.36 |.35 |.35 |.34 |.34 |.34 |.34 |.33  |
|15   |--  |--  |--  |--  |--  |--  |.35 |.34 |.34 |.34 |.34 |.33  |

Vol/Acre = (sum Number 5' Bolts X Factor)/No. of Points\\
Av. Factor for 5' Bolts .37\\
Vol. From VDF Pub. 58\\
Service Forester's Handbook

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