======Size, Cubic Volume and Board Foot Volume in Pine Poles======

^Class and Min Circum.     ^Length (Feet) ^Vol. (Cu.Feet) ^Average Volume, Board feet ^Average Volume,Board Feet ^Min. Circum. and Diam. ^|
^and Equiv. Diameter (In.) ^:::           ^:::            ^Int'l. rule 1/4"           ^Scribner Rule             ^Equivalent to 6 ft. of ^|
^:::                       ^:::           ^:::            ^:::                        ^Form Class 80             ^First Log Circum. Diam.^|
|Class 1                   |25            |15.3           |86                         |75                        |33.5      |10.66        |
|27" Circum.               |30            |20.4           |114                        |125                       |36.5      |11.62        |
|8.59" Diam.               |35            |26.2           |153                        |155                       |39.0      |12.41        |
|:::                       |40            |32.6           |182                        |205                       |41.0      |13.05        |
|:::                       |45            |39.3           |217                        |245                       |43.0      |13.69        |
|:::                       |50            |46.6           |271                        |280                       |45.0      |14.32        |
|:::                       |55            |54.3           |306                        |335                       |46.5      |14.80        |
|:::                       |60            |62.6           |342                        |385                       |48.0      |15.28        |
|:::                       |65            |71.1           |397                        |420                       |49.5      |15.76        |
|:::                       |70            |80.1           |441                        |495                       |51.0      |16.23        |
|:::                       |75            |89.5           |486                        |535                       |52.5      |16.71        |
|:::                       |              |               |                           |                          |          |             |
|Class 2                   |25            |13.2           |74                         |60                        |31.5      |10.05        |
|25" Circum.               |30            |17.8           |96                         |105                       |34.0      |10.82        |
|7.96" Diam.               |35            |22.8           |131                        |135                       |36.5      |11.62        |
|:::                       |40            |28.2           |158                        |175                       |38.5      |12.25        |
|:::                       |45            |34.1           |189                        |210                       |40.5      |12.89        |
|:::                       |50            |40.4           |231                        |240                       |42.0      |13.37        |
|:::                       |55            |47.1           |261                        |295                       |43.5      |13.85        |
|:::                       |60            |54.2           |295                        |325                       |45.0      |14.32        |
|:::                       |65            |61.6           |344                        |365                       |46.5      |14.80        |
|:::                       |70            |69.5           |381                        |425                       |48.0      |15.28        |
|:::                       |75            |77.7           |410                        |500                       |49.0      |15.60        |
|:::                       |              |               |                           |                          |          |             |
|Class 3                   |25            |11.5           |63                         |70                        |29.5      |9.39         |
|23" Circum.               |30            |15.4           |82                         |85                        |32.0      |10.19        |
|7.32" Diam.               |35            |19.7           |107                        |115                       |34.0      |10.82        |
|:::                       |40            |24.5           |135                        |150                       |36.0      |11.46        |
|:::                       |45            |29.5           |157                        |180                       |37.5      |11.94        |
|:::                       |50            |35.0           |194                        |205                       |39.0      |12.41        |
|:::                       |55            |40.8           |222                        |250                       |40.5      |12.89        |
|:::                       |60            |47.0           |249                        |280                       |42.0      |13.37        |
|:::                       |65            |53.4           |294                        |310                       |43.5      |13.85        |
|:::                       |70            |60.2           |328                        |340                       |45.0      |14.32        |
|:::                       |75            |67.3           |352                        |380                       |46.0      |14.64        |
|:::                       |              |               |                           |                          |          |             |
|Class 4                   |25            |10.0           |53                         |55                        |27.5      |8.75         |
|21" Circum.               |30            |13.3           |68                         |70                        |29.5      |9.39         |
|6.68" Diam.               |35            |17.1           |92                         |90                        |31.5      |10.03        |
|:::                       |40            |21.2           |112                        |130                       |33.5      |10.66        |
|:::                       |45            |25.6           |134                        |145                       |35.0      |11.14        |
|:::                       |50            |30.4           |165                        |170                       |36.5      |11.62        |
|:::                       |55            |35.4           |189                        |190                       |38.0      |12.10        |
|:::                       |60            |40.7           |208                        |215                       |39.0      |12.41        |
|:::                       |65            |46.4           |245                        |240                       |40.5      |12.89        |
|:::                       |70            |52.2           |277                        |265                       |41.5      |13.21        |
|:::                       |              |               |                           |                          |          |             |
|Class 5                   |25            |8.6            |43                         |45                        |25.5      |8.12         |
|19" Circum.               |30            |11.6           |55                         |55                        |27.5      |8.75         |
|6.5" Diam.                |35            |14.8           |75                         |75                        |29.0      |9.23         |
|:::                       |40            |18.4           |93                         |100                       |31.0      |9.87         |
|:::                       |45            |22.2           |107                        |120                       |32.5      |10.35        |
|:::                       |50            |26.3           |137                        |140                       |34.0      |10.82        |
|:::                       |              |               |                           |                          |          |             |
|Class 6                   |20            |5.2            |24                         |20                        |21.0      |6.68         |
|17" Circum.               |25            |7.5            |32                         |35                        |23.0      |7.32         |
|5.41" Diam.               |30            |10.0           |43                         |45                        |25.0      |7.96         |
|:::                       |35            |12.8           |62                         |65                        |27.0      |8.59         |
|:::                       |40            |15.9           |75                         |85                        |28.5      |9.07         |
|:::                       |45            |19.3           |90                         |100                       |30.0      |9.55         |
|:::                       |              |               |                           |                          |          |             |
|Class 7                   |20            |4.6            |20                         |15                        |19.5      |6.21         |
|15" Circum.               |25            |6.4            |27                         |25                        |21.5      |6.84         |
|4.77" Diam.               |30            |8.6            |36                         |35                        |23.5      |7.48         |
|:::                       |35            |11.1           |49                         |55                        |25.0      |7.96         |
|:::                       |              |               |                           |                          |          |             |
|Class 9                   |20            |3.2            |17                         |10                        |17.5      |5.57         |
|15" Circum.               |25            |4.7            |24                         |20                        |19.5      |6.21         |
|4.77" Diam.               |30            |6.4            |32                         |25                        |20.5      |6.53         |
|:::                       |              |               |                           |                          |          |             |
|Class 10                  |20            |2.8            |8                          |10                        |14.0      |4.46         |
|12" Circum. 3.82" Diam.   |25            |4.0            |14                         |15                        |15.0      |4.77         |

Forest Farmer Manual, March 1975