52 



BULLETIN 234, U. S. DEPARTMENT OF AGRICULTURE. 



Table 27, which is based on 894 trees, shows the number of ties (including about 25 

 per cent second-class ties), and of prop material expressed in linear feet, for trees from 

 10 to 15 inches in diameter and from 50 to 90 feet in height. 



Table 27. ' — Average number of first and second class railroad ties and amount of mine 

 prop material in lodgepole pine, Medicine Bovj National Forest, Wyo. 



Diameter 



Total height of trees. 



















breast 



50 feet. 



60 feet. 



70 feet. 



80 feet 



90 feet. 



high. 



















Ties. 



Props. 



Ties. 



Props. 



Ties. 



Props. 



Ties. 



Props. 



Ties. 



Props. 



Inches. 



No. 



Feet. 



No. 



Feet. 



No. 



Feet. 



No. 



Feet. 



No. 



Feet. 



10 

 11 



2.0 



2.4 



17 

 13 



2.3 

 2.7 



21 



18 



2.5 

 3.0 



25 

 21 



3.0 

 3.6 



29 

 25 







4.0 



28 



12 



2.8 



12 



3.2 



15 



3.5 



19 



4.1 



21 



4.5 



24 



13 



3.3 



11 



3.6 



14 



4.0 



17 



4.7 



19 



4.9 



21 



14 



3.7 



11 



4.0 



13 



4.5 



15 



5.1 



17 



5.4 



19 



15 



4.0 



11 



4.4 



13 



5.0 



14 



5.5 



15 



5.8 



17 



i From Forest Service Circular 120. 



FORM TABLES. 



Table 28, based on 735 trees, shows the butt taper in trees of different sizes, and is 

 useful for estimating the diameter breast high when only the stumps remain, While 

 the table is based on measurements taken in Wyoming, it has been found to be reliable 

 for Montana, and is probably so for Colorado. 



Table 28. ' — Butt taper of lodgepole pine as shown by diameter outside bark, Medicine 



Bow National Forest, Wyo. 



Diame- 

 ter 

 breast 

 high. 



Inches 



5 



6 



7 



8 



9 



10 



11 



Height from ground. 



1 foot. 



2 feet. 3 feet. 



4 feet. 



5 feet. 



Diame- 

 eter 



breast 

 high. 







Diameter. 







Inches. 



Inches. 



Inches. 



Inches. 



Inches. 



5.5 



5.4 



5.2 



5.1 



4.9 



6.6 



6.4 



6.2 



6 



1 



5.9 



7.8 



7.4 



7.2 



7 



1 



6.9 



8.9 



8.4 



8.2 



8 



1 



7.9 



10.0 



9.4 



9.2 



9 



1 



8.9 



11.1 



10.4 



10.2 



10 



1 



9.9 



12.2 



11.5 



11.2 



11 



1 



10.9 



Inches. 



12 



13 



14 



15 



16 



17 



Height from ground. 



1 foot. 2 feet, 3 feet. 4 feet 



5 feet. 



Diainet.pr. 



Inches. 



Inches. 



Inches. 



Inches. 



13.3 



12.5 



12.2 



12.1 



14.4 



13. 



13.2 



13.1 



15.6 



14.7 



14.2 



14.1 



16.8 



15.8 



15.3 



15.1 



18.0 



16.9 



16. 4 



16.1 



19.3 



18.1 



17.5 



17.1 



Inches. 

 11.9 

 12.9 

 13.9 

 14.9 

 15.9 

 16." 9 



i From Forest Service Circular 12ti. 



Table 29 shows the stem taper of lodgepole-pine trees of different diameters breast 

 high. Such a table can be used as a basis for constructing volume tables in terms of 

 any desired unit, and is also useful as showing at what distance from the ground any 

 given diameter occurs, in trees of different diameters and heights. 



