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Sub routine VOLTOT 



VOLTOT is called by GUTS to calculate the merchantable cubic and board 

 foot volume of individual trees when total tree height is measured. The 

 input parameters are d.b.h., total height, and species. 



Both the cubic and board foot equations are from Honer (1967). In 



applying these formulas, the gross cubic foot volume of the tree is first 



calculated. The merchantable cubic and board foot volumes are then derived 



from the gross volume. To use these equations it is necessary to place all 



species into one of 16 groups. The species grouping is as follows: 



Species Group Species in 



Number Group 



1 WP 



2 RP, PP. TA, SC, OS 



3 SP, NS 



4 BF 



5 CE 



6 HM 



7 AS 



8 WB, SB, GB 



9 YB 



10 SM, RM, YP 



11 BW 



12 BE 



13 BC 



14 EL 



15 WI, HH, OH 



16 RO, WO, BO GU, HI, WA 



Stump height and merchantable top are variables in the equations. 



VOLTOT sets these to the following defaults: 



Stump Height 0.5 ft. 



Cubic Foot Top 4 in. 



Softwood Board Foot Top 6 in. 



Hardwood Board Foot Top 8 in. 



The equations are presented in full in Appendix C, page 58. 



No common area used. 



