| TIGER WC Specifications for the Central States (IL, IN, IA, MO) |
Unless noted, the values below apply to Illinois, Indiana, Iowa, and Missouri
Number of species = 45 named species (plus 5 other user defined species for each state)
Minimum DBH for a tree to have 1 pulp bolt (1 pulp bolt = 8') = 3.5" for softwoods and = 5.5" for hardwoods
Minimum DBH for a tree to have 1/2 sawlog (1 log = 16') = 11.5" for softwoods and hardwoods
Minimum DBH for a tree to have 1/2 veneer log (1 log = 16') = 13.5" for softwoods and hardwoods
Maximum sawlog height = 4 logs (if using 12' logs, max =5.5 logs)
Maximum veneer height = 2.0 logs (if using 12' logs, max =3.0 logs)
Minimum total height = 10'
Maximum total height =140'
Minimum site index = 20'
Growth model - Central States growth model by US Forest Service
Default pulp volume table - Table 6 in Gevorkiantz and Olsen (1955)
Default board foot volume table for sawtimber and veneer - Doyle, Form Class 78
except IA = Scribner, Form Class 78 and MO = International of unknown origin (from Hank Stelzer, extension).
To return to the "Details by state" page, click here.
Number of species = 45 named species (plus 5 other user defined species for each state)
Minimum DBH for a tree to have 1 pulp bolt (1 pulp bolt = 8') = 3.5" for softwoods and = 5.5" for hardwoods
Minimum DBH for a tree to have 1/2 sawlog (1 log = 16') = 11.5" for softwoods and hardwoods
Minimum DBH for a tree to have 1/2 veneer log (1 log = 16') = 13.5" for softwoods and hardwoods
Maximum sawlog height = 4 logs (if using 12' logs, max =5.5 logs)
Maximum veneer height = 2.0 logs (if using 12' logs, max =3.0 logs)
Minimum total height = 10'
Maximum total height =140'
Minimum site index = 20'
Growth model - Central States growth model by US Forest Service
Default pulp volume table - Table 6 in Gevorkiantz and Olsen (1955)
Default board foot volume table for sawtimber and veneer - Doyle, Form Class 78
except IA = Scribner, Form Class 78 and MO = International of unknown origin (from Hank Stelzer, extension).
To return to the "Details by state" page, click here.
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