Sawtimher trees . --Growing stock trees containing 

 at least a 12-foot saw log and not more than two- 

 thirds of the gross board-foot volume in cull material. 

 Softwoods must be at least 9.0 inches d.b.h. and 

 hardwoods at least 11.0 inches d.b.h. 



Sawtimher volume .--Net volume (in board feet 

 International 1/4-inch rule) of sawtimber trees be- 

 tween a 1-foot stump and a specified merchantable 

 top--fixed or variable. A fixed top is 7 inches in 

 diameter inside bark. A variable top varies with 

 d.b.h. as follows: 



Range in d,b,h. Top d.i.b. 



Inches 



Inches 



9.0 10.9 



11.0 - 14.9 



15.0 - 18.9 



19.0 - 20.9 



21.0 - 24.9 

 25.0+ 



5 

 6 

 7 

 8 



9 

 10 



11 



AFLC/HAFB, Ogden 



