Douglas-Fir Equation II: 



DFht = + 58.5 - 1,300 (1/WPSI) + 0.0121 (WPSI« A) 

 + HT value + TP value 



16(WPSI/A) 



Abies /Pachistima 

 Tliztja/ Pachistima — 1 



Thuja-Tsuga/ Pachistima 



Ridge 



Upper slope 

 Middle slope 

 Lower slope 

 Flat or bench 



+4 

 -1 

 



+ 1 

 -4 



R- = 0.93; Sy = ±7.2 feet. 



Grand Fir Equation I: 



GFht = + 13.6 + 0.75 (WPSI) + 0.80(A) - 1,260 (1/WPSI) - 15(WPSI/A) 



R 2 = 0.94; Sy = ±7.6 feet. 



Grand Fir Equation II: 



GFht = + 54.1 + L8(WPSI) - 1,100 (1/WPSI) - 0.014 (WPSI* A) - 25 (WPSI/ A) 

 - 0.0022(E) + 1.8(CosAz) + 1.35 (WPht) - 77(WPht/A) 

 + HT value + TP value 



A bies /Pachistima —> I 



Thuja/ Pachistima 

 Thu ja'Tsuga/ Pachistima + 1 



Ridge 



Upper slope 

 Middle slope 

 Lower slope 

 Flat or bench 



+ 1 

 -2 

 +3 

 -2 

 + 1 



R 2 = 0.96; Sy = ±6.3 feet. 



Western Hemlock Equation I: 

 WHht = + 0.7 + 0.91 (WPht) 



R 2 = 0.98; Sy = ±4.1 feet. 



Western Hemlock Equation II: 



WHht = - 16 + 0.33 (A) + 45,000 (1/E) + 0.65 (WPht) + TP value 



Ridge -1 



Upper slope +3 



Middle slope 



Lower slope —3 



Flat or bench + 1 



R 2 = 0.99; Sy s ±3.4 feet. 



5 



