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BOARD FOOT VOLUME EQUATION 



BASED ON MERCHANTABLE HEIGHT 



(Wlant and Castenada 1978) 

 (INT. 1/4-lnch Rule) 



D = diameter at breast height 



H = merchantable height to a 10" top in 16 foot logs 



FC = Girard form class 



VOLUME = [ (aQ+a^H+a2H^) + (bQ+b^H+b2H^)D + (Cq+c^H+C2H^)D^] [ (FC-78) (.03)+!] 



