Measures and yields of products and residues 



Cubic-foot volume inside bark to 4.0-inch top (ob) = 



0.0020 D^H - 0.6837 

 Cubic-foot volume inside bark to 8.0-inch top (ob) = 



0.0020 D^H - 5.1000 

 where 



D = diameter at breast height, inches 

 H = total tree height, feet 



3265 



(27-20) 

 (27-21) 



10 12 



DBH (INCHES) 



Figure 27-4. — The effect of merchantable top diameter, measured inside bark, on stem- 

 wood cubic volume per 80-foot-high oak tree. The data are based on upland oaks 

 sampled in Ohio, Kentucky, Missouri, Indiana, and Illinois. (Drawing from Hilt 1980, 



p. 4.) 



Table 16-30 lists another set of equations for predicting cubic volumes in 

 yellow poplar trees. These are based on a sample of 39 trees 6 to 28 inches in 

 dbh growing in natural, unevenaged mountain cove stands in western North 

 Carolina. Table 27-66D displays data computed from these equations. 



Volume tables for yellow-poplar are also published in Schnur (1937) based on 

 264 trees measured in Ohio and West Virginia, in McCarthy (1933) based on 

 512 trees measured in Pike County, Ohio, and Fairfax County, Virginia, and in 

 Clark and Schroeder (1977) based on 39 trees measured in western North 

 Carolina. 



