EED ALDER OF THE PACIFIC NORTHWEST 
Table 16. — Volume table for red alder 1 
41 
Griffin. Wilcox 
Scri 
bner rule 
Total height in feet 
Average 
volume 
for all 
heights 
Height 
of 
average 
Diameter at breast 
height 
60 
70 
so 
90 
100 
110 
120 
Volume in board feet 1 
Inches : 
8 
12 
17 
22 
26 
31 
30 
36 
46 
57 
68 
82 
95 
108 
120 
48 
55 
70 
85 
105 
127 
150 
170 
195 
218 
245 
275 
305 
54 
74 
94 
115 
140 
170 
200 
230 
260 
290 
325 
362 
400 
445 
493 
550 
610 
Bd.ft. 
30 
47 
75 
101 
135 
176 
219 
263 
308 
357 
406 
459 
518 
590 
668 
749 
837 
Feet 
71 
9 
76 
10 _ _. 
118 
140 
170 
205 
242 
275 
314 
352 
392 
437 
485 
536 
585 
650 
710 
80 
11 . 
84 
12 
88 
13 
235 
278 
320 
365 
410 
460 
506 
561 
620 
683 
750 
810 
"365 
415 
458 
512 
568 
632 
700 
770 
840 
905 
91 
14 
94 
15 
97 
16 
99 
17. .. ... .. 
101 
18 
102.5 
19 _ 
104 
20 
105 
21. 
106 
22 
106.5 
23 _ 
107 
24 
107 
i Contents inside bark. Xo allowance made for defect or breakage. Frustum form factor method used. 
Volumes read from curves. Based on 8-foot logs taken to a top diameter of 6 inches, from 115 trees. 
Table 17 shows the average contents in cubic feet of trees of dif- 
ferent diameters for various heights. This was obtained by measur- 
ing the diameters of the 8-foot logs at the middle, up to 2 inches in 
diameter inside the bark. It is therefore a very accurate guide to 
the total quantity of wood in a tree. 
Griffin, Wilcox 
Table 17. — Volume table for red alder 1 
Total height in feet 
Average 
volume 
for all 
heights 
Diameter at breast 
height 
60 
70 
- 
80 
90 
100 
110 
120 
Height 
of aver- 
age tree 
Volume in cubic feet 
Inches : 
8 
7.2 
8.4 
9.6 
10.8 
12.2 
11.5 
13.0 
14.0 
15. 7 
18.0 
20.4 
23.7 
27.0 
30.5 
15.7 
17.4 
19.2 
21.9 
24.5 
27.4 
31.0 
35.3 
39.1 
43.2 
47.4 
51.6 
55.8 
Cu.ft. 
11.6 
15.3 
19.3 
23.8 
28.6 
34 3 
40.5 
47.0 
54.0 
61.4 
68.8 
76.4 
83.3 
92.0 
100.5 
109.2 
117.6 
Feet 
71 
9 
21.9 
24.6 
28.1 
31.1 
34.1 
37.8 
42.3 
46.8 
51.2 
56.3 
61.3 
66.8 
71.8 
77.6 
83.3 
89.0 
76 
10 
. 
. _ 
80 
11 
84 
12 
37.5 
41.0 
45.0 
49.4 
54.4 
59.6 
65.6 
71.5 
77.9 
84 
90.2 
96.5 
102.4 
88 
13 

91 
14 
52.0 
56.5 
62.0 
68.0 
75. 
82.0 
89.0 
96.0 
102.9 
109.8 
116.8 
69.7 
77.0 
84.8 
92.4 
100.0 
108.0 
115.5 
123.2 
131.0 
94 
15 
97 
H ! 
99 
17 
101 
18 
102.5 
19 
104 
20 
105 
21 
106 
22 
X 
106 5 
23. 
107 
24... 
107 
1 Contents inside bark. Xo allowance made for defect or breakage. Frustum form factor method used. 
Average, or middle, diameter of logs used. Volumes read from curves. Based on 8-foot logs taken to a 
top diameter of 2 inches, from 115 trees. 
