Table 1. --Codes for combinations of units of measure and merchantability 



limits used to identify output 



Units of measure 



Board feet 



Cubic feet International Scribner 



1/4" log scale 



Codes 



Total tree 1 ^4 ^7 



Variable top diameter 



and fixed stump height 2 5 8 



Fixed top diameter and 



fixed stump height 3 6 9 



Merchantability 

 limits 



^For total-tree volumes in board feet, an initial top diameter of 

 4" is assumed and then increased until the volume of the top log is maxi- 

 mized. The stump height for combinations 4 and 7 is assumed to be 

 one-half foot. 



Mesavage's definition of merchantable sawtimber height is used for all six 

 combinations involving board-foot scaling units. That is, the program interpolates 

 to find the location of the minimum top diameter specified by the user. Then the 

 length of the topmost log is reduced in successive intervals of 2 feet so long as the 

 volume of the piece is increased thereby, or until the length of the top log has been 

 reduced to 6 feet. The top diameter as finally established by this analysis is printed 

 and/or punched with the tree totals. However, for forked trees, only the top diameter 

 of the last fork is displayed. 



FORM OF OUTPUT 



All tree identification and the computed volume, surface, length, and defect 

 volume data can be printed, punched into cards, or both, for each measured or 

 interpolated section in the tree. However, the data for separate sections can be 

 suppressed in either type of output, so that tree totals only would be printed as in 

 figure 1 or punched into cards. In addition, totals of all the trees in each plot 

 and in each problem can be printed at the user's option. Figure 1 is an example of 

 the printed output for one tree showing both the dimensions of the separate sections, 

 and the tree totals. Output data for log lengths and heights are in feet; diameters 

 and double bark thicknesses are in inches; and surface area and basal area are in 

 square feet . 



Format of the punched output follows the sequence of the printed output with 

 three exceptions. First, the number of forks is punched in column 80. Second, 

 section and log detail cards have a "1" punched in column 79 that is replaced by a 

 "2" on tree-total cards. Third, coding for grade of the piece replaces form factor on 

 the section detail cards for cubic-foot volume units (i.e., those coded 1, 2, or 3 in 

 column 1) . 



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