Coconino Scribner decimal “C” Volume Table

The Coconino Scribner Decimal “C” Volume Table is a timber scaling tool used to estimate the board foot volume of logs by rounding to the nearest 10 board feet and dropping the final zero. It is a standard method, specifically in Idaho, for determining log values based on diameter and length

Diameter (in inches)	Log Length (in feet)
Diameter (in inches)	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
3										1	1	1	1	1	1	1	1
4					1	1	1	1	1	1	1	1	1	1	1	1	1
5		1	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2
6		1	1	1	1	1	1	1	1	1	1	1	2	2	2	2	2
7	1	1	1	1	1	1	1	2	2	2	2	2	3	3	3	3	3
8	1	1	1	1	1	1	2	2	2	2	2	2	3	3	3	3	3
9	1	1	1	2	2	2	3	3	3	3	3	3	4	4	4	4	4
10	1	1	2	2	3	3	3	3	3	4	4	5	6	6	6	6	7
11	1	2	2	2	3	3	4	4	4	5	5	6	7	7	8	8	8
12	2	2	3	3	4	4	5	5	6	6	7	7	8	8	9	10	10
13	2	3	4	4	5	5	6	7	7	8	8	9	10	10	11	12	12
14	3	4	4	5	6	6	7	8	9	9	10	11	11	12	13	14	14
15	4	4	5	6	7	8	9	10	11	12	12	13	14	15	16	17	18
16	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
17	5	6	7	8	9	10	12	13	14	15	16	17	18	20	21	22	23
18	5	7	8	9	11	12	13	15	16	17	19	20	21	23	24	26	27
19	6	8	9	10	12	13	15	16	18	19	21	22	24	25	27	28	30
20	7	9	11	12	14	16	17	19	21	23	24	26	28	30	31	33	35
21	8	10	12	13	15	17	19	21	23	25	27	28	30	32	34	36	38
22	8	10	13	15	17	19	21	23	25	27	29	31	33	35	38	40	42
23	9	12	14	16	19	21	23	26	28	31	33	35	38	40	42	44	47
24	10	13	15	18	21	23	25	28	30	33	35	38	40	43	45	48	50
25	11	14	17	20	23	26	29	31	34	37	40	43	46	49	52	54	57
26	12	16	19	22	25	28	31	34	37	41	44	47	50	53	56	59	62
27	14	17	21	24	27	31	34	38	41	44	48	51	55	58	62	65	68
28	15	18	22	25	29	33	36	40	44	47	51	54	58	62	65	69	73
29	15	19	23	27	31	35	38	42	46	49	53	57	61	65	68	72	76
30	16	21	25	29	33	37	41	45	49	53	57	62	66	70	74	78	82
31	18	22	27	31	36	40	44	49	53	58	62	67	71	75	80	84	89
32	18	23	28	32	37	41	46	51	55	60	64	69	74	78	83	88	92
33	20	24	29	34	39	44	49	54	59	64	69	73	78	83	88	93	98
34	20	25	30	35	40	45	50	55	60	65	70	75	80	85	90	95	100
35	22	27	33	38	44	49	55	60	66	71	77	82	88	93	98	104	109
36	23	29	35	40	46	52	58	63	69	75	81	86	92	98	104	110	115
37	26	32	39	45	51	58	64	71	77	84	90	96	103	109	116	122	129
38	27	33	40	47	54	60	67	73	80	87	93	100	107	113	120	126	133
39	28	35	42	49	56	63	70	77	84	91	98	105	112	119	126	133	140
40	30	38	45	53	60	68	75	83	90	98	105	113	120	128	135	142	150

Archived Presentations and Documents:

Log-Scaling-in-Idaho-2015

Coconino Scribner decimal “C” Volume Table

Archived Presentations and Documents:

Board of Scaling Practices

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