VOLUME TABLES. 63 



Table 40. — Volume of white and chestnut oak. in cubic feet 





Diameter breast- 

 high. 





Height of tree- 



-feet. 











20 



30 



40 



50 



60 



- 70 



80 



Total 

 basis. 





Volume. 





2 



Inches. 



Cu ft. 

 0.3 



Cu.ft. 

 0.4 

 .9 

 1.5 



2.4 



Cu.ft. 



Cu.ft. 



Cu.ft. 



Cu.ft, 



Cu.ft. 



Trees. 

 26 



3 



1.0 

 2.0 

 2.9 

 4.2 

 5.7 

 7.4 

 9.3 

 11.2 

 13.3 

 15.7 











55 



4 





2.G 

 3.6 

 5.0 

 6.6 

 8.7 

 11.1 

 13.7 

 16.5 

 19.3 

 22.4 

 25.9 









54 



5 











46 



G 





6.0 

 7.6 

 10.3 

 13.5 

 16.5 

 19.8 

 23.1 

 26.9 

 31.0 

 35.5 

 40.5 







38 



7 







8.9 

 12.2 

 16.0 

 19.5 

 23.2 

 27.2 

 31 5 

 36.3 

 41.7 

 47.5 





36 



8... 









10 



9 







18.9 

 22.6 

 26.8 

 31.4 

 36.3 

 41.6 

 48.1 

 55.0 



2 



10 







8 



11 







14 



12 







1 



13 







2 



14 









1 



15 











1(1 















Total 





























233 























Volumes include stem and topwood, with bark, up to a minimum diameter of 2 inches. Average stump 

 heights vary from 6 inches for small trees to 21 inches for large ones. 



CORDWOOD. 



In place of a volume table for cordwood, a table of cordwood 

 converting factors (Table 41) showing the number of cubic feet per 

 cord by inch diameter classes, breast-high, is given. 



To obtain these factors, the average solid-wood contents of a large 

 number of stacked cords — 128 cubic feet — of mixed round and split 

 4-foot wood was determined by adding together the volumes in 

 cubic feet of the sticks composing them. The average middle diam- 

 eter outside bark of the sticks in each stack was obtained at the same 

 time. The volumes in split wood were determined by measuring 

 the sticks before they were split. On the basis of these figures a 

 curve was drawn on cross-section paper, from which the average 

 solid contents for cords composed of round or split sticks varying in 

 diameter from 0.9 to 10.6 inches were read. To apply these factors 

 to trees of any breast-high diameter, it was necessary simply to 

 determine the average middle diameter outside bark of all the 4-foot 

 sticks into which the tree could be cut. 



The figures are conservative, since they represent a larger number 

 of cubic feet per cord than would probably be obtained in the average 

 stack of mixed hardwoods, including branchwood, and in practice 

 would therefore probably slightly underrun the actual cordwood 

 volume. 



The converting factors were used in the construction of the cord- 

 wood yield table (Table 26) and of the growth tables (Tables 30-33). 



