36 



BULLETIN 139, U. S. DEPARTMENT OF AGRICULTURE. 



Table 21. — Volume of Norway pine with bark, in cubic feet, on basis of diameter , total 



height in feet. 



[Calculated from form factors of 306 Trees.] 



Diameter 

 breast- 

 high 

 (inches). 









Height (feet). 











40 



50 



60 



70 



80 



90 



100 



110 



Form 

 factor. 



Volume (cubic feet). 





5 



3.0 



4.2 



5.8 



7.5 



9.4 



11.6 



14.0 



16.7 



19.5 



23.0 



26.0 



3.7 



5.3 

 7.2 

 9.4 

 11.8 

 14.5 

 17.5 

 21.0 

 24.0 

 28.0 

 32.0 

 37.0 

 41.0 

 46.0 



4.4 

 6.4 

 8.6 

 11.2 

 14.2 

 17.4 

 21.0 

 25.0 

 29.0 

 34.0 

 39.0 

 44.0 

 50.0 

 56.0 

 62.0 

 68.0 

 75.0 













0.542 



6 



7.4 

 10.1 

 13.1 

 16.5 

 20.0 

 25.0 

 29.0 

 34.0 

 40.0 

 45.0 

 51.0 

 58.0 

 65.0 

 72.0 

 80.0 

 88.0 

 96.0 

 105.0 

 114.0 











.540 



7 



11.5 



15.0 

 18.9 

 23.0 

 28.0 

 33.0 

 39.0 

 45.0 

 52.0 

 59.0 

 66.0 

 74.0 

 82.0 

 91.0 

 100.0 

 110.0 

 120.0 

 130.0 









.538 



8 



16.8 

 21.0 

 26.0 

 32.0 

 37.0 

 44.0 

 51.0 

 58.0 

 66.0 

 74.0 

 83.0 

 93.0 

 102.0 

 113.0 

 124.0 

 135.0 

 147.0 



* 





.536 



9 



24.0 

 29.0 

 35.0 

 42.0 

 49.0 

 56.0 

 65.0 

 73.0 

 83.0 

 93.0 

 103.0 

 114.0 

 126.0 

 138.0 

 150.0 

 163.0 





.534 



10 





.533 



11 

 12 

 13 

 14 

 15 

 16 



39.0 



46.0 



54.0 



62.0 



71.0 



81.0 



91.0 



102.0 



113.0 



125.0 



138.0 



151.0 



165.0 



179.0 



.531 

 .530 

 .529 

 .528 

 .527 

 .526 



17 





.525 



18 





.524 



19 





.523 



20 







.522 



21 







.522 



22 







.521 



23 









.520 



24 









.519 













By a comparison of Table 20 and Table 22 which follows, and by 

 referring to the study of specific gravity, page 8, it is possible to 

 determine approximately what sizes of trees can be driven without 

 danger of expensive loss through sinkers. 



Table 22. — Volume of Norvjay pine sapivood, in cubic feet, on basis of diameter, total 



height in feet. 





Total height of tree (feet). 



Diameter 



breast-high 



(inches). 



40 



50 



60 



70 



SO 



90 



100 



110 





Volume of sapwood (cubic feet). 



5 



2.3 



3.2 

 4.2 

 5.2 

 6.4 

 7.8 

 9.3 

 10.8 



2.6 

 3.9 

 5.3 

 6.8 

 8.5 

 10.4 

 12.3 

 14.2 



3.0 



4.5 



6.1 



8.0 



10.2 



12.4 



14.7 



16.9 



19.2 



21.0 











6 













6 5 











8 



8.6 

 11.1 

 13.7 

 16.4 

 19.0 

 21.0 

 24.0 

 26.0 

 28.0 



8.8 

 11.6 

 14.5 

 17.6 

 21.0 

 23.0 

 26.0 

 28.0 

 31.0 

 33.0 

 34.0 

 36.0 

 37.0 









9 









10 



15.4 

 12.5 

 22.0 

 25.0 

 28.0 

 30.0 

 33.0 

 35.0 

 37.0 

 39.0 

 40.0 



16.3 

 19.6 

 23.0 

 26.0 

 29.0 

 32.0 

 35.0 

 38.0 

 40.0 

 42.0 

 43.0 





11 





12 

 13 



24 

 27 



14 







31 



15 







34 



16 









38 



17 









40 



18 













43 



19 





:::::::::::: 







44 



20 













46 



Table 22 was computed from the form factors for Norway pine. 

 The form factor is the ratio between the volume of the tree and that 

 of a cylinder with the same total height and diameter at 4J feet from 



