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5-142 Edition 47
Forest Products
Tables
Tree Counts
Comparison of Log Rules
ESTIMATING NUMBER OFTREES PER HECTARE
Spacing
(Meters)
Spacing (Meters)
1
2 3 4 5 6 7 8
1
10 000 5000 3333 2500 2000 1667 1428 1250
2
5000 2500 1667 1250 1000 834 714 625
3
3333 1667 1111 834 667 556 477 417
4
2500 1250 834 625 500 417 357 313
5
2000 1000 667 500 400 330 286 250
6
1667 834 556 417 333 278 238 208
7
1428 714 477 357 286 238 204 179
8
1250 625 417 313 250 208 179 156
ESTIMATING NUMBER OFTREES PER ACRE
Spacing
(Feet)
Spacing (Feet)
5
6 7 8 9 10 11 12
5
1742 1452 1244 1089 968 871 792 726
6
1452 1210 1037
1
907 806 726 660 605
7
1244 1037
1
888
1
777 691 622 565 518
8
1089
1
907
1
777
1
680 605 544 495 453
9
1
968
1
806
1
691
1
605 537 484 440 403
10
1
871
1
726
1
622
1
544 484 435 396 363
11
1
792
1
660
1
565
1
495 440 396 360 330
12
1
726
1
605
1
518
1
453 403 363 330 302
13
1
671
1
558
1
478
1
418 372 335 304 279
14
1
622
1
518
1
444
1
390 346 311 283 259
15
1
580
1
484
1
415
1
363 323 290 264 242
COMPARISON OF LOG RULES
●
Board Foot Values for
16-Foot Logs
Diameter at
Small End,
Inside Bark,
Inches
International
1/4 Inch
Scribner
Scribner
Decimal Spaulding Doyle
4
5
10
10
—
0
—
0
6
20
18
20
—
0
4
8
40
32
30
—
0
16
10
65
54
60
50
36
12
95
79
80
77
64
14
135
114
110
114 100
16
180
159 160
161 144
18
230
213 210
216 196
20
290
280 280
276 256
22
355
334 330
341 324
24
425
404 400
412 400
26
500
500 500
488 484
28
585
582 580
569 576
30
675
657 660
656 676
32
770
736 740
748 784
34
875
800 800
845 900
36
980
923 920
950 1024
38
1095
1068 1070 1064 1156
40
1220
1204 1200 1185 1296