Giving you the Edge in Business

Len/Diam	3"	4"	5"	6"	7"	8"	9"	10"	11"	12"	13"	14"	15"	16"	17"	18"
4'	0	0	0	0	1	1	1	1	1	2	2	3	4	4	5	5
5'	0	0	1	1	1	1	1	2	2	2	3	4	4	5	6	7
6'	0	0	1	1	1	1	1	2	2	3	4	4	5	6	7	8
7'	0	0	1	1	1	1	1	2	3	3	4	5	6	7	8	9
8'	0	1	1	1	1	1	2	3	3	4	5	6	7	8	9	11
9'	0	1	1	1	1	1	2	3	3	4	5	6	8	9	10	12
10'	0	1	1	1	1	2	2	3	4	5	6	7	9	10	12	13
11'	0	1	1	1	2	2	2	3	4	5	7	8	10	11	13	15
12'	0	1	1	1	2	2	3	4	4	6	7	9	11	12	14	16
13'	1	1	1	2	2	2	3	4	5	6	8	9	12	13	15	17
14'	1	1	1	2	2	2	3	4	5	7	8	10	12	14	16	19
15'	1	1	2	2	2	2	3	5	6	7	9	11	13	15	17	20
16'	1	1	2	2	3	3	4	6	7	8	10	11	14	16	18	21
17'	1	1	2	2	3	3	4	6	7	8	10	12	15	17	20	23
18'	1	1	2	2	3	3	4	6	8	9	11	13	16	18	21	24
19'	1	1	2	2	3	4	5	7	8	9	11	14	17	19	22	25
20'	1	1	2	2	3	4	5	7	8	10	12	14	18	20	23	27

Len/Diam	19"	20"	21"	22"	23"	24"	25"	26"	27"	28"	29"	30"	31"	32"	33"	34"
4'	6	7	8	8	9	10	11	12	14	15	15	16	18	18	20	20
5'	7	9	9	10	12	13	14	16	17	18	19	21	22	23	24	25
6'	9	10	11	13	14	15	17	19	21	22	23	25	27	28	29	30
7'	10	12	13	15	16	18	20	22	24	25	27	29	31	32	34	35
8'	12	14	15	17	19	20	23	25	27	29	30	33	36	37	39	40
9'	13	16	17	19	21	23	26	28	31	33	34	37	40	41	44	45
10'	15	17	19	21	24	25	29	31	34	36	38	41	44	46	49	50
11'	16	19	21	23	26	28	32	34	38	40	42	45	49	51	54	55
12'	18	21	23	25	28	30	34	37	41	44	46	49	53	55	59	60
13'	19	23	25	27	31	33	37	41	44	47	49	53	58	60	64	65
14'	21	24	27	29	33	35	40	44	48	51	53	57	62	64	69	70
15'	22	26	28	31	35	38	43	47	51	55	57	62	67	69	73	75
16'	24	28	30	33	38	40	46	50	55	58	61	66	71	74	78	80
17'	25	30	32	35	40	43	49	53	58	62	65	70	75	78	83	85
18'	27	31	34	38	42	45	52	56	62	65	68	74	80	83	88	90
19'	28	33	36	40	45	48	54	59	65	69	72	78	84	87	93	95
20'	30	35	38	42	47	50	57	62	68	73	76	82	89	92	98	100

Len/Diam	35"	36"	37"	38"	39"	40"	41"	42"	43"	44"	45"	46"	47"	48"	49"	50"
4'	22	23	26	27	28	30	32	34	35	37	38	40	41	43	45	47
5'	27	29	32	33	35	38	40	42	44	46	47	50	52	54	56	58
6'	33	35	39	40	42	45	48	50	52	56	57	59	62	65	67	70
7'	38	40	45	47	49	53	56	59	61	65	66	69	72	76	79	82
8'	44	46	51	53	56	60	64	67	70	74	76	79	83	86	90	94
9'	49	52	58	60	63	68	72	76	78	83	85	89	93	97	101	105
10'	55	58	64	67	70	75	79	84	87	93	95	99	104	108	112	117
11'	60	63	71	73	77	83	87	92	96	102	104	109	114	119	124	129
12'	66	69	77	80	84	90	95	101	105	111	114	119	124	130	135	140
13'	71	75	84	87	91	98	103	109	113	120	123	129	135	140	146	152
14'	77	81	90	93	98	105	111	117	122	130	133	139	145	151	157	164
15'	82	86	96	100	105	113	119	126	131	139	142	149	155	162	168	175
16'	88	92	103	107	112	120	127	134	140	148	152	159	166	173	180	187
17'	93	98	109	113	119	128	135	143	148	157	161	168	176	184	191	199
18'	98	104	116	120	126	135	143	151	157	167	171	178	186	194	202	211
19'	104	110	122	127	133	143	151	159	166	176	180	188	197	205	213	222
20'	109	115	129	133	140	150	159	168	174	185	190	198	207	216	225	234

Len/Diam	51"	52"	53"	54"	55"	56"	57"	58"	59"	60"
4'	49	51	53	55	57	59	61	63	65	68
5'	61	63	66	68	71	73	76	79	82	84
6'	73	76	79	82	85	88	91	95	98	101
7'	85	89	92	96	99	103	107	110	114	118
8'	97	101	105	109	113	118	122	126	131	135
9'	109	114	118	123	127	132	137	142	147	152
10'	122	127	132	137	142	147	152	158	163	169
11'	134	139	145	150	156	162	167	173	180	186
12'	146	152	158	164	170	176	183	189	196	203
13'	158	164	171	177	184	191	198	205	212	220
14'	170	177	184	191	198	206	213	221	229	237
15'	182	190	197	205	212	220	228	237	245	253
16'	195	202	210	218	227	235	244	252	261	270
17'	207	215	224	232	241	250	259	268	278	287
18'	219	228	237	246	255	264	274	284	294	304
19'	231	240	250	259	269	279	289	300	310	321
20'	243	253	263	273	283	294	304	315	327	338

The Table below show the differences between the NWLRAG Table and the Idaho Table

Diam/Len	3"	4"	5"	6"	7"	8"	9"	10"	11"	12"	13"	14"	15"	16"	17"	18"
4'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
5'	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0
6'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
7'	0	0	0	0	0	0	-1	0	1	0	0	0	0	0	0	0
8'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
9'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
10'	0	0	0	0	0	0	-1	0	0	0	0	0	0	0	0	0
11'	0	0	0	0	0	0	-1	0	0	0	0	0	0	0	0	0
12'	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0
13'	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0
14'	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0
15'	0	0	1	1	0	0	0	0	0	0	0	0	0	0	0	0
16'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
17'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
18'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
19'	0	0	0	0	0	1	1	1	0	-1	-1	0	0	0	0	-1
20'	0	0	0	0	0	1	1	0	0	0	0	0	0	0	0	0

Diam/Len	19"	20"	21"	22"	23"	24"	25"	26"	27"	28"	29"	30"	31"	32"	33"	34"
4'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
5'	-1	0	-1	0	0	0	0	0	0	0	0	0	0	0	0	0
6'	0	-1	-1	0	0	0	0	0	0	0	0	0	0	0	0	0
7'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
8'	0	0	0	0	0	-1	0	0	0	0	-1	0	0	0	0	0
9'	0	0	0	0	0	0	0	0	0	0	-1	0	0	0	0	0
10'	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0
11'	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	0
12'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
13'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
14'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
15'	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0
16'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
17'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
18'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
19'	0	0	0	0	1	0	0	0	0	0	0	0	0	-1	0	0
20'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Diam/Len	35"	36"	37"	38"	39"	40"	41"	42"	43"	44"	45"	46"	47"	48"	49"	50"
4'	0	0	0	0	0	0	0	1	0	0	0	1	0	0	0	0
5'	0	0	0	0	0	0	1	0	1	0	0	1	0	0	0	0
6'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
7'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
8'	0	0	0	-1	0	0	0	0	0	0	0	0	0	0	0	0
9'	0	0	0	0	0	0	0	0	-1	0	0	0	0	0	0	0
10'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
11'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
12'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
13'	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0
14'	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0
15'	0	0	0	0	0	0	0	0	0	0	-1	0	0	0	0	0
16'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
17'	0	0	0	0	0	0	0	0	0	0	0	-1	0	0	0	0
18'	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0
19'	0	0	0	1	0	1	0	-1	0	0	0	0	1	0	-1	0
20'	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Diam/Len	51"	52"	53"	54"	55"	56"	57"	58"	59"	60"
4'	1	1	1	1	1	0	0	0	0	1
5'	0	0	0	0	0	0	0	0	1	0
6'	0	0	0	0	0	0	0	0	0	0
7'	0	0	0	0	0	0	0	0	0	0
8'	0	0	0	0	0	0	0	0	0	0
9'	-1	0	0	0	0	0	0	0	0	0
10'	0	0	0	0	0	0	0	0	0	0
11'	0	0	0	0	0	0	0	-1	0	0
12'	0	0	0	0	0	0	0	0	0	0
13'	0	-1	0	0	0	0	0	0	0	0
14'	0	0	0	0	0	0	0	0	0	0
15'	-1	0	0	0	0	0	0	0	0	0
16'	0	0	0	0	0	0	0	0	0	0
17'	0	0	0	0	0	0	0	0	0	0
18'	0	0	0	0	0	0	0	0	0	0
19'	0	0	0	-1	0	0	0	0	0	0
20'	0	0	0	0	0	0	0	0	0	0

For logs over 20' in length, the rules require logs to be scaled in segments.
The guiding rule here is:
"When logs exceed the maximum scaling length, scale them as two or more segments as nearly the same 2-foot length as practicable. When it is necessary to divide a log into unequal lengths, make the butt segment(s) the longest." The Table below shows the Segment breaks for logs up to 120 feet.
The Table is the Exact same as the Idaho Table

Length	# of Segments	Butt Segment	Segment #2	Segment #3	Segment #4	Segment #5	Segment #6
8	1	8
9	1	9
10	1	10
11	1	11
12	1	12
13	1	13
14	1	14
15	1	15
16	1	16
17	1	17
18	1	18
19	1	19
20	1	20
21	2	11	10
22	2	12	10
23	2	12	11
24	2	12	12
25	2	13	12
26	2	14	12
27	2	14	13
28	2	14	14
29	2	15	14
30	2	16	14
31	2	16	15
32	2	16	16
33	2	17	16
34	2	18	16
35	2	18	17
36	2	18	18
37	2	19	18
38	2	20	18
39	2	20	19
40	2	20	20
41	3	14	14	13
42	3	14	14	14
43	3	15	14	14
44	3	16	14	14
45	3	16	15	14
46	3	16	16	14
47	3	16	16	15
48	3	16	16	16
49	3	17	16	16
50	3	18	16	16
51	3	18	17	16
52	3	18	18	16
53	3	18	18	17
54	3	18	18	18
55	3	19	18	18
56	3	20	18	18
57	3	20	19	18
58	3	20	20	18
59	3	20	20	19
60	3	20	20	20
61	4	16	16	15	14
62	4	16	16	16	14
63	4	16	16	16	15
64	4	16	16	16	16
65	4	17	16	16	16
66	4	18	16	16	16
67	4	18	17	16	16
68	4	18	18	16	16
69	4	18	18	17	16
70	4	18	18	18	16
71	4	18	18	18	17
72	4	18	18	18	18
73	4	19	18	18	18
74	4	20	18	18	18
75	4	20	19	18	18
76	4	20	20	18	18
77	4	20	20	19	18
78	4	20	20	20	18
79	4	20	20	20	19
80	4	20	20	20	20
81	5	17	16	16	16	16
82	5	18	16	16	16	16
83	5	18	17	16	16	16
84	5	18	18	16	16	16
85	5	18	18	17	16	16
86	5	18	18	18	16	16
87	5	18	18	18	17	16
88	5	18	18	18	18	16
89	5	18	18	18	18	17
90	5	18	18	18	18	18
91	5	19	18	18	18	18
92	5	20	18	18	18	18
93	5	20	19	18	18	18
94	5	20	20	18	18	18
95	5	20	20	19	18	18
96	5	20	20	20	18	18
97	5	20	20	20	19	18
98	5	20	20	20	20	18
99	5	20	20	20	20	19
100	5	20	20	20	20	20
101	6	18	18	17	16	16	16
102	6	18	18	18	16	16	16
103	6	18	18	18	17	16	16
104	6	18	18	18	18	16	16
105	6	18	18	18	18	17	16
106	6	18	18	18	18	18	16
107	6	18	18	18	18	18	17
108	6	18	18	18	18	18	18
109	6	19	18	18	18	18	18
110	6	20	18	18	18	18	18
111	6	20	19	18	18	18	18
112	6	20	20	18	18	18	18
113	6	20	20	19	18	18	18
114	6	20	20	20	18	18	18
115	6	20	20	20	19	18	18
116	6	20	20	20	20	18	18
117	6	20	20	20	20	19	18
118	6	20	20	20	20	20	18
119	6	20	20	20	20	20	19
120	6	20	20	20	20	20	20

For Butt logs, certain taper rules are applied. For logs 40' and shorter, these rules end up requiring only one diameter measurement at the small end.
The Table below provides the Midpoint Taper Rules, by region according to the NWLRAG.
These differ from the Idaho rules mostly in way Regions are defined.

MIDPOINT TAPER ON MULTI-SEGMENT BUTT LOGS
Region 1 - North Idaho Area (north of the Salmon River) --- Midpoint taper(s) shall be a standard taper as follows:
These are the same taper rules as Idaho
Larch & Lodgepole Pine	21’-48’	Shall be 1-inch per segment.
Larch & Lodgepole Pine	49’-60’	Shall be 2-inch top segment, 1-inch remaining segment.
Cedar	21’-40’	Shall be 2-inches per segment.
All Other Species	21’-40’	Allow 1-inch taper on pieces with an odd top diameter; allow 2-inch taper on pieces with an even top diameter (Odd-Even Rule).
All Species (except Larch & Lodgepole Pine)	41’-60’	Take two measurements, small end and 16’ up from the butt. The diameter at the 16’ measurement point shall be determined by actual measure. Apply calculated taper distribution to determine scaling diameter of the second segment.
All Species	61’ and longer	Take two measurements, small end and top of the second segment up from the butt. The top diameter of the second segment shall be determined by actual measure. Apply calculated taper distribution to top segment(s) and standard taper rule for the appropriate species to bottom segment.
Region 2 - Utah & Colorado --- All midpoint taper(s) shall be determined on the basis of actual taper.
Region 3 - Eastern Idaho Area (All counties lying to the east and north of Region 2, and including all of the Targhee National Forest) --- Midpoint taper(s) shall be a standard or actual taper as follows:
Douglas Fir & Alpine Fir & Engelmann Spruce	21’-40’	Shall be 2-inch standard taper.
Lodgepole Pine	21’-30’	Shall be 1-inch standard taper.
Lodgepole Pine	31’-40’	Shall be 2-inch standard taper.
Any Other Species	41’ and longer	Shall be actual taper.
Region 4 - Idaho south of the Salmon River & Nevada --- Midpoint taper(s) shall be a standard or actual taper as follows:
Larch	21’-40’	Shall be 1-inch standard taper.
All Other Species	21’-40’	Shall be 2-inch standard taper.
All Species	41’ and longer	Shall be actual taper.
Region 5 – California --- All midpoint taper(s) shall be determined as follows.
All Species	21’ - 27’	the total taper is 2".
All Species	28’ - 40’	the total taper is 4".
All Species	41’ - 51’	the total taper is 6".
All Species	52’ and longer	use actual taper.
Except Incense Larch	21’ - 33’	the total taper is 6".
Incense Larch	34’ - 46’	the total taper is 8".
Incense Larch	47’ - 51’	the total taper is 10".
Incense Larch	52’ and longer	use actual taper.
Region 6 – Oregon and Washington --- Midpoint taper(s) shall be a standard or actual taper as follows:
Larch	21’-40’	Shall be 1-inch standard taper.
All Other Species	21’-30’	Shall be 1-inch standard taper.
All Other Species	31’-40’	Shall be 2-inch standard taper.
All Species	41’ and longer	Shall be actual taper.