Rough trees 



(1) Live trees of commercial species that do not contain at least one 12- 

 foot sawlog or two noncontiguous sawlogs, each 8 feet long or lon- 

 ger, now or prospectively, and/or do not meet regional specifica- 

 tions for freedom from defect primarily because of roughness or 

 poor form. 



(2) All live trees of noncommercial species. 



Salvable dead 



Standing and down dead trees 5.0 inches d.b.h. and larger and more 

 than 50 percent sound on a cubic foot basis. 



No defect: Tree has no rot, and no defect such as excessive sweep and 

 crook. 



Defect-mostly physical: Tree is more than 50 percent sound on a cubic- 

 foot basis. Less than half the total volume loss is due to rot and more 

 than half is due to such defects as excessive sweep and crook. 



Defect-mostly rot: Tree is more than 50 percent sound on a cubic-foot 

 basis. More than half of the total volume loss is due to rot and less 

 than half is due to such defects as excessive sweep and crook. Tree or 

 potential product sections are firm enough to hold together if handled. 



Sanitation 



Improving the health of a stand through intermediate cuttings which re- 

 duce the source of the insect or disease problem. 



Saplings 



Treeg 1.0 inches to 4.0 inches in diameter at breast height. 



Sawlog 



A section of a tree stem of sufficient size to yield commercial size dimen- 

 sion lumber. 



Sawtimber trees 



Softwood trees which are 9.0 inches and larger and hardwood trees 

 which are 11.0 inches and larger in diameter at breast height. 



Sawtimber volume 



Net volume in board feet of sawtimber trees of commercial species. Net 

 volume equals gross volume less deduction for rot, sweep, crook, and 

 other defects that affect use for lumber. 



Scribner Rule 



The common board-foot log rule used in determining volume of sawtimber 

 in the Western states. 



Seedlings 



Live trees less than 1.0 inch in diameter at breast height. 



Seedling-sapling stands 



Stands at least 16.7 percent stocked with growing stock trees in which 

 more than half of the stocking is saplings and/or seedlings. 



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