Service Forester's Handbook

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====== Volume Per Sq. Ft. of B.A. (Int. 1/4 and Standard Cords) ======
====Int. 1/4 Inch====
^(Prism BAF-10) Form Class 79                      ^^^^^^^|
^Ave.   ^Number Logs per Average Tree               ^^^^^^|
^DBH    ^1    ^1 1/2  ^2   ^2 1/2  ^3      ^3 1/2   ^4    |
|8      |57   |77     |92  |109    |--     |--      |--   |
|9      |63   |84     |102 |115    |124    |--      |--   |
|10     |70   |92     |112 |126    |141    |--      |--   |
|11     |73   |95     |118 |135    |151    |--      |--   |
|12     |74   |98     |122 |140    |158    |168     |179  |
|13     |76   |102    |127 |146    |166    |178     |191  |
|14     |77   |103    |129 |150    |170    |183     |197  |
|15     |77   |104    |130 |152    |174    |190     |205  |
|16     |78   |104    |131 |153    |176    |193     |209  |
|17     |79   |106    |134 |160    |181    |198     |217  |
|18     |79   |107    |136 |160    |184    |201     |220  |

This table may be used for rough estimates of sawtimber 
volume per acre (Int. 1/4" Rule) without making log count
per point.
  (1) Find BA at sample point
  (2) Multiply BA by factor for average size tree 
      (DBH by log length)  
      
====Pulpwood Volume per Square Foot B.A. (Standard Cords)====
^(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    |.06 |.09 |.13 |--  |--  |--  |--  |--  |--  |--   |--   |--  |
|5    |.07 |.10 |.13 |.17 |.20 |--  |--  |--  |--  |--   |--   |--  |
|6    |--  |.10 |.13 |.17 |.20 |.23 |.26 |.29 |--  |--   |--   |--  |
|7    |--  |--  |.13 |.16 |.19 |.23 |.26 |.29 |.32 |--   |--   |--  |
|8    |--  |--  |.13 |.16 |.19 |.22 |.25 |.28 |.31 |.35  |.38  |.41 |
|9    |--  |--  |--  |.16 |.19 |.22 |.25 |.28 |.31 |.34  |.37  |.40 |
|10   |--  |--  |--  |.16 |.19 |.22 |.25 |.28 |.31 |.35  |.37  |.40 |
|11   |--  |--  |--  |.15 |.19 |.21 |.25 |.28 |.31 |.34  |.37  |.40 |
|12   |--  |--  |--  |.15 |.18 |.21 |.24 |.28 |.31 |.34  |.37  |.40 |
|13   |--  |--  |--  |.14 |.17 |.20 |.23 |.25 |.28 |.31  |.34  |.37 |
|14   |--  |--  |--  |.15 |.18 |.21 |.24 |.27 |.30 |.34  |.37  |.40 |
|15   |--  |--  |--  |--  |--  |--  |.24 |.27 |.30 |.34  |.37  |.40 |

__Vol./Acre = Sum Basal Area/point X Factor__\\
No. of Points
Service Forester's Handbook

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