
Where NTPA = Number of logs per Acre

Where
![Smalian's = {0.0027271*[DL^2 + DS^2)*L]}](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_s-vAtJn2Q6NaMRbdRkMGFYlI7TD_2Cn3Fb7DyvzEejh2lbZnCL4-ZbPVgCsoVTN7iuQgxadzADelF2e-F019ED8PGUSuJhHyy0ufiDfl-a3TkuLb-UTolS7hh33ccZt_qHIrEG0NyYxEdrNTX3mUlDDZDrNCKSLRBgBHQ=s0-d)
DL = Diameter Large End (DBHI*0.1)
DS = DL - [(0.125 inches per foot)*(L feet)]
L = Log Length for down logs (PRHT)
#logs/acre = (NTPA*0.01)
Log Wieght/acre (in Tons)
![Tonsacre = \sum {[Smalians * Adj Dens * Decay Factor]/2000*[NTPA*0.01]}/PSTR](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_u8ir7EbX6pgDYe7gTaM2W2LzyBvC2VyNj8TePBmVjk6GbiBXuq3xjLALYJVWN0vO6413Ysl-Co_ozOAR5opEzk_PIDQpA6MYSHWCR7c3myNArGHnONza6Zc6IZDU7wTq_Ap3jKe4FXLgIKCtb5x_q5_tjhg0R3qRyumf7SPcrMknfFl07yj9lEd1CEB-Ng7vsP49TZ1U1CXS-JvnCcTeKjUA=s0-d)
Where Adj Dens is adjusted density faCtor for species
DENSITY = New Object() {30, 30, 0, 0, 28, 25, 0, 0, 0, 0, 28, 28, 25, 27, 28, 0, 0, 0, 28, 0, 28, 28, 28, 28, 28, 28, 28, 30, 29, 29, 27, 27, 25, 28, 27, 0, 27, 0, 27, 0, 28, 29, 0, 0, 30, 28, 29, 29, 0, 0, 25, 25, 25, 25, 0, 0, 30, 30, 30, 0, 29, 29, 29, 29, 29, 29, 0, 28, 0, 33, 28, 42, 26, 28, 24, 33, 42, 24, 35, 35, 35, 35, 35, 35, 35, 35, 35, 30, 30, 0, 0, 28, 25, 0, 0, 0, 0, 28, 28, 25, 27, 28, 0, 28, 28, 28, 0, 28, 28, 28, 28, 28, 28, 28, 30, 29, 29, 27, 27, 25, 28, 27, 0, 27, 27, 27, 0, 28, 29, 0, 0, 30, 28, 29, 29, 0, 0, 25, 25, 25, 25, 0, 0, 30, 30, 30, 0, 29, 29, 29, 29, 29, 29, 0, 28, 0, 33, 28, 42, 26, 28, 24, 33, 42, 24, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 24, 40, 35, 28, 35, 40, 40, 35, 40, 35, 0}
Decay Factor is decay class factor for log
Decay Class Decay factor
1 1.00
2 0.85
3 0.70
4 0.55
5 0.44
Volume per Acre in Cubic Feet (Down logs and snags only)
![Ft^3/A = 0.0027271 * [DL^2 + DS^2] * L * NT/A](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_tzWMnrVEVKFqexSwdPsI5nt8A7clO7iNZi7zMWs-X5TcSJ58zHiBjpf49pmUXEG6lFkoRo5Iu-QzEZuHgfJSH1HrfCDYrvh7vDGJ67tX-rShvmyniJJnqcyJWWeayhEGziu4vBz7TI8KNex3XjrW0Y2qrMLhBhvnvJNpPvbYs=s0-d)
Where
DL = Diameter Large End (DBHI*0.1)
DL = [DBHI*0.1 + (0.125 inches/ft)*4.5ft] for snags
DS = DL - [(0.125 inches per foot)*(L feet)]
L = Log Length or height for down snags (PRHT)
NT/A = #logs/acre = (NTPA*0.01)