9.23.4.2. Spans for Joists, Rafters and Beams — OBC 2006 (in force 31 December 2006 to 1 January 2010)

Table A-1 Maximum Spans for Floor Joists – General Cases(1) Forming Part of Sentence 9.23.4.2.(1)


Column 1	Column 2	Column 3	Col. 4	Col. 5	Col. 6	Col. 7	Col. 8	Col. 9	Col. 10	Col. 11	Col. 12
Commercial Designation	Grade	Joist Size, mm	Maximum Span, m
			With Strapping⁽²⁾			With Bridging			With Strapping⁽²⁾ and Bridging
			Joist Spacing, mm			Joist Spacing, mm			Joist Spacing, mm
			300	400	600	300	400	600	300	400	600
Douglas Fir – Larch (includes Douglas Fir and Western Larch)	Select	38 × 89	2.13	1.97	1.73	2.19	1.99	1.73	2.19	1.99	1.73
	Structural	38 × 140	3.23	3.07	2.73	3.44	3.12	2.73	3.44	3.12	2.73
		38 × 184	3.88	3.69	3.51	4.18	3.92	3.59	4.37	4.07	3.59
		38 × 235	4.57	4.34	4.13	4.86	4.57	4.29	5.05	4.70	4.39
		38 × 286	5.21	4.95	4.71	5.49	5.16	4.85	5.66	5.28	4.92
	No. 1	38 × 89	2.00	1.85	1.66	2.09	1.90	1.66	2.09	1.90	1.66
	and No. 2	38 × 140	3.09	2.91	2.62	3.29	2.99	2.62	3.29	2.99	2.62
		38 × 184	3.71	3.53	3.36	4.00	3.76	3.44	4.19	3.90	3.44
		38 × 235	4.38	4.16	3.96	4.66	4.38	4.11	4.84	4.51	4.20
		38 × 286	4.99	4.75	4.52	5.26	4.94	4.65	5.43	5.06	4.72
	No. 3	38 × 89	1.90	1.69	1.38	1.95	1.69	1.38	1.95	1.69	1.38
		38 × 140	2.78	2.41	1.97	2.78	2.41	1.97	2.78	2.41	1.97
		38 × 184	3.38	2.93	2.39	3.38	2.93	2.39	3.38	2.93	2.39
		38 × 235	4.14	3.58	2.93	4.14	3.58	2.93	4.14	3.58	2.93
		38 × 286	4.80	4.16	3.39	4.80	4.16	3.39	4.80	4.16	3.39
	Construction	38 × 89	1.90	1.77	1.61	2.03	1.84	1.61	2.03	1.84	1.61
	Standard	38 × 89	1.81	1.63	1.33	1.88	1.63	1.33	1.88	1.63	1.33
Hem – Fir (includes Western Hemlock and Amabilis Fir)	Select	38 × 89	2.08	1.93	1.71	2.16	1.96	1.71	2.16	1.96	1.71
	Structural	38 × 140	3.18	3.03	2.69	3.39	3.08	2.69	3.39	3.08	2.69
		38 × 184	3.82	3.64	3.46	4.12	3.87	3.54	4.31	4.02	3.54
		38 × 235	4.50	4.28	4.08	4.80	4.51	4.23	4.98	4.64	4.33
		38 × 286	5.14	4.89	4.65	5.42	5.09	4.78	5.59	5.21	4.86
	No. 1 and	38 × 89	2.00	1.85	1.66	2.09	1.90	1.66	2.09	1.90	1.66
	No. 2	38 × 140	3.09	2.91	2.62	3.29	2.99	2.62	3.29	2.99	2.62
		38 × 184	3.71	3.53	3.36	4.00	3.76	3.44	4.19	3.90	3.44
		38 × 235	4.38	4.16	3.96	4.66	4.38	4.11	4.84	4.51	4.20
		38 × 286	4.99	4.75	4.52	5.26	4.94	4.65	5.43	5.06	4.72
	No. 3	38 × 89	1.90	1.77	1.61	2.03	1.84	1.61	2.03	1.84	1.61
		38 × 140	2.99	2.78	2.43	3.19	2.90	2.43	3.19	2.90	2.43
		38 × 184	3.60	3.42	2.95	3.88	3.61	2.95	4.06	3.61	2.95
		38 × 235	4.24	4.03	3.61	4.51	4.24	3.61	4.68	4.37	3.61
		38 × 286	4.84	4.60	4.19	5.10	4.79	4.19	5.26	4.90	4.19
	Construction	38 × 89	1.90	1.77	1.61	2.03	1.84	1.61	2.03	1.84	1.61
	Standard	38 × 89	1.81	1.68	1.39	1.96	1.71	1.39	1.96	1.71	1.39
Spruce – Pine – Fir (includes Spruce (all species except Coast Sitka Spruce) Jack Pine, Lodgepole Pine, Balsam Fir and Alpine Fir)	Select	38 × 89	1.95	1.81	1.64	2.06	1.87	1.64	2.06	1.87	1.64
	Structural	38 × 140	3.05	2.85	2.57	3.24	2.95	2.57	3.24	2.95	2.57
		38 × 184	3.66	3.48	3.31	3.94	3.70	3.38	4.12	3.84	3.38
		38 × 235	4.31	4.10	3.90	4.59	4.31	4.05	4.76	4.44	4.14
		38 × 286	4.91	4.67	4.45	5.18	4.87	4.57	5.34	4.98	4.64
	No. 1 and	38 × 89	1.86	1.72	1.58	1.99	1.81	1.58	1.99	1.81	1.58
	No. 2	38 × 140	2.92	2.71	2.49	3.14	2.85	2.49	3.14	2.85	2.49
		38 × 184	3.54	3.36	3.20	3.81	3.58	3.27	3.99	3.72	3.27
		38 × 235	4.17	3.96	3.77	4.44	4.17	3.92	4.60	4.29	4.00
		38 × 286	4.75	4.52	4.30	5.01	4.71	4.42	5.17	4.82	4.49
	No. 3	38 × 89	1.81	1.68	1.55	1.96	1.78	1.55	1.96	1.78	1.55
		38 × 140	2.84	2.64	2.43	3.08	2.80	2.43	3.08	2.80	2.43
		38 × 184	3.47	3.30	2.95	3.74	3.52	2.95	3.92	3.61	2.95
		38 × 235	4.09	3.89	3.61	4.36	4.09	3.61	4.52	4.22	3.61
		38 × 286	4.67	4.44	4.19	4.92	4.62	4.19	5.08	4.73	4.19
	Construction	38 × 89	1.81	1.68	1.55	1.96	1.78	1.55	1.96	1.78	1.55
	Standard	38 × 89	1.70	1.58	1.44	1.88	1.71	1.44	1.88	1.71	1.44
Northern Species (includes any Canadian Species covered by the NLGA Standard Grading Rules	Select	38 × 89	1.65	1.53	1.42	1.84	1.68	1.46	1.84	1.68	1.46
	Structural	38 × 140	2.59	2.41	2.24	2.90	2.63	2.30	2.90	2.63	2.30
		38 × 184	3.27	3.11	2.94	3.52	3.31	3.03	3.69	3.44	3.03
		38 × 235	3.85	3.66	3.48	4.10	3.85	3.62	4.26	3.97	3.70
		38 × 286	4.39	4.18	3.97	4.63	4.35	4.09	4.78	4.45	4.15
	No. 1 and	38 × 89	1.59	1.48	1.37	1.80	1.64	1.43	1.80	1.64	1.43
	No. 2	38 × 140	2.51	2.33	2.16	2.83	2.57	2.25	2.83	2.57	2.25
		38 × 184	3.19	3.04	2.84	3.44	3.23	2.96	3.60	3.36	2.96
		38 × 235	3.76	3.58	3.41	4.01	3.77	3.54	4.16	3.88	3.62
		38 × 286	4.29	4.08	3.88	4.53	4.25	4.00	4.67	4.35	4.06
	No. 3	38 × 89	1.54	1.43	1.32	1.74	1.57	1.36	1.76	1.60	1.36
		38 × 140	2.42	2.24	1.94	2.74	2.38	1.94	2.75	2.38	1.94
		38 × 184	3.12	2.90	2.37	3.35	2.90	2.37	3.35	2.90	2.37
		38 × 235	3.67	3.49	2.89	3.91	3.54	2.89	4.06	3.54	2.89
		38 × 286	4.19	3.98	3.36	4.42	4.11	3.36	4.55	4.11	3.36
	Construction	38 × 89	1.54	1.43	1.32	1.74	1.57	1.40	1.76	1.60	1.40
	Standard	38 × 89	1.48	1.37	1.15	1.63	1.41	1.15	1.63	1.41	1.15

Notes to Table A-1:

⁽¹⁾ Spans apply only where the floors serve residential areas as described in Table 4.1.5.3., or the uniformly distributed live load on the floor does not exceed that specified for residential areas as described in Table 4.1.5.3.

⁽²⁾ See Sentence 9.23.9.4.(5) for alternatives to strapping.

Table A-2 Maximum Spans for Floor Joists – Special Cases(1) Forming Part of Sentence 9.23.4.2.(1) and 9.23.4.4.(2)

Column 1	Column 2	Column 3	Col. 4	Col. 5	Col. 6	Col. 7	Col.	Col. 9	Col. 10	Col. 11	Col. 12
Commercial Designation	Grade	Joist Size, mm	Maximum Span, m
			Joists with Ceilings Attached to Wood Furring						Joists with Concrete Topping
			Without Bridging			With Bridging			With or Without Bridging⁽²⁾
			Joist Spacing, mm			Joist Spacing, mm			Joist Spacing, mm
			300	400	600	300	400	600	300	400	600
Douglas Fir – Larch (includes Douglas Fir and Western Larch)	Select	38 × 89	2.19	1.99	1.73	2.19	1.99	1.73	2.19	1.99	1.73
	Structural	38 × 140	3.44	3.12	2.73	3.44	3.12	2.73	3.44	3.12	2.73
		38 × 184	4.24	3.99	3.59	4.52	4.11	3.59	4.52	4.11	3.59
		38 × 235	4.98	4.69	4.29	5.47	5.20	4.58	5.77	5.24	4.58
		38 × 286	5.67	5.34	4.88	6.19	5.89	5.54	6.83	6.37	5.58
	No. 1 and	38 × 89	2.09	1.90	1.66	2.09	1.90	1.66	2.09	1.90	1.66
	No. 2	38 × 140	3.29	2.99	2.62	3.29	2.99	2.62	3.29	2.99	2.55
		38 × 184	4.06	3.83	3.44	4.33	3.93	3.44	4.33	3.81	3.11
		38 × 235	4.78	4.50	4.11	5.24	4.98	4.31	5.37	4.65	3.80
		38 × 286	5.44	5.12	4.68	5.93	5.64	5.00	6.24	5.40	4.41
	No. 3	38 × 89	1.95	1.69	1.38	1.95	1.69	1.38	1.72	1.49	1.21
		38 × 140	2.78	2.41	1.97	2.78	2.41	1.97	2.45	2.12	1.73
		38 × 184	3.38	2.93	2.39	3.38	2.93	2.39	2.98	2.58	2.11
		38 × 235	4.14	3.58	2.93	4.14	3.58	2.93	3.65	3.16	2.58
		38 × 286	4.80	4.16	3.39	4.80	4.16	3.39	4.23	3.66	2.99
	Construction	38 × 89	2.03	1.84	1.61	2.03	1.84	1.61	2.03	1.84	1.61
	Standard	38 × 89	1.88	1.63	1.33	1.88	1.63	1.33	1.66	1.44	1.17
Hem – Fir (includes Western Hemlock and Amabilis Fir)	Select	38 × 89	2.16	1.96	1.71	2.16	1.96	1.71	2.16	1.96	1.71
	Structural	38 × 140	3.39	3.08	2.69	3.39	3.08	2.69	3.39	3.08	2.69
		38 × 184	4.18	3.94	3.54	4.46	4.05	3.54	4.46	4.05	3.54
		38 × 235	4.92	4.63	4.23	5.39	5.13	4.52	5.69	5.17	4.52
		38 × 286	5.60	5.27	4.82	6.10	5.81	5.47	6.74	6.28	5.50
	No .1 and	38 × 89	2.09	1.90	1.66	2.09	1.90	1.66	2.09	1.90	1.66
	No. 2	38 × 140	3.29	2.99	2.62	3.29	2.99	2.62	3.29	2.99	2.62
		38 × 184	4.06	3.83	3.44	4.33	3.93	3.44	4.33	3.93	3.26
		38 × 235	4.78	4.50	4.11	5.24	4.98	4.39	5.53	4.88	3.99
		38 × 286	5.44	5.12	4.68	5.93	5.64	5.25	6.54	5.66	4.63
	No 3	38 × 89	2.03	1.84	1.61	2.03	1.84	1.61	2.03	1.83	1.50
		38 × 140	3.19	2.90	2.43	3.19	2.90	2.43	3.02	2.62	2.14
		38 × 184	3.94	3.61	2.95	4.17	3.61	2.95	3.68	3.18	2.60
		38 × 235	4.63	4.36	3.61	5.08	4.42	3.61	4.50	3.89	3.18
		38 × 286	5.27	4.96	4.19	5.74	5.13	4.19	5.22	4.52	3.69
	Construction	38 × 89	2.03	1.84	1.61	2.03	1.84	1.61	2.03	1.84	1.61
	Standard	38 × 89	1.96	1.71	1.39	1.96	1.71	1.39	1.74	1.50	1.23
Spruce – Pine – Fir (includes Spruce (all species except Coast Sitka Spruce) Jack Pine, Lodgepole Pine, Balsam Fir and Alpine Fir)	Select	38 × 89	2.06	1.87	1.64	2.06	1.87	1.64	2.06	1.87	1.64
	Structural	38 × 140	3.24	2.95	2.57	3.24	2.95	2.57	3.24	2.95	2.57
		38 × 184	4.00	3.77	3.38	4.26	3.87	3.38	4.26	3.87	3.38
		38 × 235	4 70	4.43	4.05	5.16	4.91	4.32	5.45	4.95	4.32
		38 × 286	5.35	5.04	4.61	5.84	5.55	5.23	6.45	6.01	5.26
	No. 1 and	38 × 89	1.99	1.81	1.58	1.99	1.81	1.58	1.99	1.81	1.58
	No. 2	38 × 140	3.14	2.85	2.49	3.14	2.85	2.49	3.14	2.85	2.49
		38 × 184	3.87	3.64	3.27	4.12	3.75	3.27	4.12	3.75	3.27
		38 × 235	4.55	4.28	3.91	4.99	4.75	4.18	5.27	4.79	4.13
		38 × 286	5.18	4.88	4.46	5.65	5.37	5.06	6.23	5.81	4.79
	No. 3	38 × 89	1.96	1.78	1.55	1.96	1.78	1.55	1.96	1.78	1.50
		38 × 140	3.08	2.80	2.43	3.08	2.80	2.43	3.02	2.62	2.14
		38 × 184	3.80	3.58	2.95	4.05	3.61	2.95	3.68	3.18	2.60
		38 × 235	4.47	4.21	3.61	4.90	4.42	3.61	4.50	3.89	3.18
		38 × 286	5.09	4.79	4.19	5.55	5.13	4.19	5.22	4.52	3.69
	Construction	38 × 89	1.96	1.78	1.55	1.96	1.78	1.55	1.96	1.78	1.55
	Standard	38 × 89	1.88	1.71	1.44	1.88	1.71	1.44	1.80	1.56	1.27
Northern Species (includes any Canadian Species covered by the NLGA Standard Grading Rules	Select	38 × 89	1.84	1.68	1.46	1.84	1.68	1.46	1.84	1.68	1.46
	Structural	38 × 140	2.90	2.63	2.30	2.90	2.63	2.30	2.90	2.63	2.30
		38 × 184	3.58	3.37	3.03	3.81	3.46	3.03	3.81	3.46	3.03
		38 × 235	4.20	3.96	3.62	4.61	4.39	3.86	4.87	4.42	3.86
		38 × 286	4.79	4.51	4.12	5.22	4.96	4.68	5.76	5.37	4.54
	No. 1 and	38 × 89	1.80	1.64	1.43	1.80	1.64	1.43	1.80	1.64	1.43
	No. 2	38 × 140	2.83	2.57	2.25	2.83	2.57	2.25	2.83	2.57	2.23
		38 × 184	3.50	3.29	2.96	3.72	3.38	2.96	3.72	3.32	2.71
		38 × 235	4.11	3.87	3.54	4.51	4.29	3.76	4.69	4.06	3.31
		38 × 286	4.68	4.40	4.03	5.10	4.85	4.36	5.44	4.71	3.84
	No. 3	38 × 89	1.76	1.60	1.36	1.76	1.60	1.36	1.70	1.47	1.20
		38 × 140	2.75	2.38	1.94	2.75	2.38	1.94	2.42	2.10	1.71
		38 × 184	3.35	2.90	2.37	3.35	2.90	2.37	2.95	2.55	2.08
		38 × 235	4.01	3.54	2.89	4.09	3.54	2.89	3.61	3.12	2.55
		38 × 286	4.56	4.11	3.36	4.75	4.11	3.36	4.18	3.62	2.96
	Construction	38 × 89	1.76	1.60	1.40	1.76	1.60	1.40	1.76	1.60	1.37
	Standard	38 × 89	1.63	1.41	1.15	1.63	1.41	1.15	1.44	1.25	1.02

Notes to Table A-2:

⁽¹⁾Spans apply only where the floors serve residential areas as described in Table 4.1.5.3., or the uniformly distributed live load on the floor does not exceed that specified for residential areas as described in Table 4.1.5.3.

⁽²⁾No bridging is assumed for spans for floor joists with concrete topping.

Table A-3 Maximum Spans for Ceiling Joists – Attic not Accessible by a Stairway Forming Part of Sentence 9.23.4.2.(1)


Column 1	Column 2	Column 3	Column 4	Column 5	Column 6
Commercial Designation	Grade	Joist Size, mm	Maximum Span, m
			Joist Spacing, mm
			300	400	600
Douglas Fir – Larch (includes Douglas Fir and Western Larch)	Select Structural	38 × 89	3.4	3.10	2.71
		38 × 140	5.37	4.88	4.26
		38 × 184	7.05	6.41	5.60
		38 × 235	9.01	8.18	7.15
		38 × 286	10.96	9.96	8.70
	No. 1 and No. 2	38 × 89	3.27	2.97	2.59
		38 × 140	5.14	4.67	4.08
		38 × 184	6.76	6.14	5.36
		38 × 235	8.63	7.84	6.85
		38 × 286	10.50	9.54	8.34
	No. 3	38 × 89	3.17	2.88	2.42
		38 × 140	4.89	4.23	3.46
		38 × 184	5.95	5.15	4.20
		38 × 235	7.27	6.30	5.14
		38 × 286	8.44	7.31	5.97
	Construction	38 × 89	3.17	2.88	2.51
	Standard	38 × 89	3.06	2.78	2.34
Hem – Fir (includes Western Hemlock and Amabilis Fir)	Select Structural	38 × 89	3.36	3.06	2.67
		38 × 140	5.29	4.81	4.20
		38 × 184	6.96	6.32	5.52
		38 × 235	8.88	8.07	7.05
		38 × 286	10.81	9.82	8.58
	No. 1 and No. 2	38 × 89	3.27	2.97	2.59
		38 × 140	5.14	4.67	4.08
		38 × 184	6.76	6.14	5.36
		38 × 235	8.63	7.84	6.85
		38 × 286	10.50	9.54	8.34
	No. 3	38 × 89	3.17	2.88	2.51
		38 × 140	4.98	4.53	3.95
		38 × 184	6.55	5.95	5.19
		38 × 235	8.36	7.60	6.34
		38 × 286	10.18	9.01	7.36
	Construction	38 × 89	3.17	2.88	2.50
	Standard	38 × 89	3.06	2.78	2.43
Spruce – Pine – Fir (includes Spruce (all species except Coast Sitka Spruce) Jack Pine, Lodgepole Pine, Balsam Fir and Alpine Fir)	Select Structural	38 × 89	3.22	2.92	2.55
		38 × 140	5.06	4.60	4.02
		38 × 184	6.65	6.05	5.28
		38 × 235	8.50	7.72	6.74
		38 × 286	10.34	9.40	8.21
	No. 1 and No. 2	38 × 89	3.11	2.83	2.47
		38 × 140	4.90	4.45	3.89
		38 × 184	6.44	5.85	5.11
		38 × 235	8.22	7.47	6.52
		38 × 286	10.00	9.09	7.94
	No. 3	38 × 89	3.06	2.78	2.43
		38 × 140	4.81	4.37	3.82
		38 × 184	6.32	5.74	5.02
		38 × 235	8.07	7.33	6.34
		38 × 286	9.82	8.93	7.36
	Construction	38 × 89	3.06	2.78	2.43
	Standard	38 × 89	2.94	2.67	2.33
Northern Species (includes any Canadian Species covered by the NLGA Standard Grading Rules	Select Structural	38 × 89	2.88	2.61	2.28
		38 × 140	4.53	4.11	3.59
		38 × 184	5.95	5.40	4.72
		38 × 235	7.60	6.90	6.03
		38 × 286	9.25	8.40	7.34
	No. 1 and No. 2	38 × 89	2.81	2.55	2.23
		38 × 140	4.42	4.02	3.51
		38 × 184	5.81	5.28	4.61
		38 × 235	7.42	6.74	5.89
		38 × 286	9.03	8.21	7.17
	No. 3	38 × 89	2.74	2.49	2.18
		38 × 140	4.31	3.92	3.42
		38 × 184	5.67	5.09	4.16
		38 × 235	7.19	6.23	5.08
		38 × 286	8.34	7.23	5.90
	Construction	38 × 89	2.74	2.49	2.18
	Standard	38 × 89	2.67	2.43	2.03

Table A-4 Maximum Spans for Roof Joists – Specified Roof Snow Loads 1.0 to 2.0 kPa Forming Part of Sentence 9.23.4.2.(1)


Column 1	Column 2	Column 3	Col. 4	Col. 5	Col. 6	Col. 7	Col. 8	Col. 9	Col. 10	Col. 11	Col. 12
Commercial Designation	Grade	Joist Size, mm	Maximum Span, m
			Specified Snow Load, kPa
			1.0			1.5			2.0
			Joist Spacing, mm			Joist Spacing, mm			Joist Spacing, mm
			300	400	600	300	400	600	300	400	600
Douglas Fir – Larch (includes Douglas Fir and Western Larch)	Select	38 × 89	2.71	2.46	2.15	2.37	2.15	1.88	2.15	1.95	1.71
	Structural	38 × 140	4.26	3.87	3.38	3.72	3.38	2.95	3.38	3.07	2.68
		38 × 184	5.60	5.09	4.44	4.89	4.44	3.88	4.44	4.04	3.53
		38 × 235	7.15	6.49	5.67	6.24	5.67	4.96	5.67	5.15	4.50
		38 × 286	8.70	7.90	6.91	7.60	6.91	6.03	6.91	6.27	5.48
	No. 1 and	38 × 89	2.59	2.36	2.06	2.27	2.06	1.80	2.06	1.87	1.63
	No. 2	38 × 140	4.08	3.71	3.24	3.57	3.24	2.83	3.24	2.94	2.57
		38 × 184	5.36	4.87	4.26	4.69	4.26	3.72	4.26	3.87	3.38
		38 × 235	6.85	6.22	5.44	5.98	5.44	4.74	5.44	4.94	4.22
		38 × 286	8.34	7.57	6.40	7.28	6.62	5.50	6.62	6.00	4.90
	No. 3	38 × 89	2.49	2.16	1.76	2.14	1.85	1.51	1.91	1.65	1.35
		38 × 140	3.56	3.08	2.51	3.06	2.65	2.16	2.72	2.36	1.92
		38 × 184	4.33	3.75	3.06	3.72	3.22	2.63	3.31	2.87	2.34
		38 × 235	5.29	4.58	3.74	4.55	3.94	3.22	4.05	3.51	2.86
		38 × 286	6.14	5.32	4.34	5.28	4.57	3.73	4.70	4.07	3.32
	Construction	38 × 89	2.51	2.28	1.99	2.20	1.99	1.74	1.99	1.81	1.58
	Standard	38 × 89	2.41	2.08	1.70	2.07	1.79	1.46	1.84	1.60	1.30
Hem – Fir (includes Western Hemlock and Amabilis Fir)	Select	38 × 89	2.67	2.43	2.12	2.33	2.12	1.85	2.12	1.93	1.68
	Structural	38 × 140	4.20	3.82	3.33	3.67	3.33	2.91	3.33	3.03	2.65
		38 × 184	5.52	5.02	4.38	4.82	4.38	3.83	4.38	3.98	3.48
		38 × 235	7.05	6.41	5.60	6.16	5.60	4.89	5.60	5.09	4.44
		38 × 286	8.58	7.80	6.81	7.50	6.81	5.95	6.81	6.19	5.41
	No. 1 and	38 × 89	2.59	2.36	2.06	2.27	2.06	1.80	2.06	1.87	1.63
	No. 2	38 × 140	4.08	3.71	3.24	3.57	3.24	2.83	3.24	2.94	2.57
		38 × 184	5.36	4.87	4.26	4.69	4.26	3.72	4.26	3.87	3.38
		38 × 235	6.85	6.22	5.44	5.98	5.44	4.75	5.44	4.94	4.32
		38 × 286	8.34	7.57	6.62	7.28	6.62	5.77	6.62	6.01	5.25
	No. 3	38 × 89	2.51	2.28	1.99	2.20	1.99	1.74	1.99	1.81	1.58
		38 × 140	3.95	3.59	3.10	3.45	3.14	2.67	3.14	2.85	2.37
		38 × 184	5.20	4.62	3.77	4.54	3.97	3.24	4.09	3.54	2.89
		38 × 235	6.53	5.65	4.61	5.61	4.86	3.97	5.00	4.33	3.53
		38 × 286	7.57	6.56	5.35	6.51	5.64	4.60	5.80	5.02	4.10
	Construction	38 × 89	2.51	2.28	1.99	2.20	1.99	1.74	1.99	1.81	1.58
	Standard	38 × 89	2.43	2.18	1.78	2.12	1.88	1.53	1.93	1.67	1.36
Spruce – Pine – Fir (includes Spruce (all species except Coast Sitka Spruce) Jack Pine, Lodgepole Pine, Balsam Fir and Alpine Fir)	Select	38 × 89	2.55	2.32	2.03	2.23	2.03	1.77	2.03	1.84	1.61
	Structural	38 × 140	4.02	3.65	3.19	3.51	3.19	2.79	3.19	2.90	2.53
		38 × 184	5.28	4.80	4.19	4.61	4.19	3.66	4.19	3.81	3.33
		38 × 235	6.74	6.13	5.35	5.89	5.35	4.68	5.35	4.86	4.25
		38 × 286	8.21	7.46	6.52	7.17	6.52	5.69	6.52	5.92	5.17
	No. 1 and	38 × 89	2.47	2.24	1.96	2.16	1.96	1.71	1.96	1.78	1.56
	No. 2	38 × 140	3.89	3.53	3.08	3.40	3.08	2.69	3.08	2.80	2.45
		38 × 184	5.11	4.64	4.05	4.46	4.05	3.54	4.05	3.68	3.22
		38 × 235	6.52	5.93	5.18	5.70	5.18	4.52	5.18	4.70	4.11
		38 × 286	7.94	7.21	6.30	6.94	6.30	5.50	6.30	5.73	5.00
	No. 3	38 × 89	2.43	2.20	1.93	2.12	1.93	1.68	1.93	1.75	1.53
		38 × 140	3.82	3.47	3.03	3.33	3.03	2.65	3.03	2.75	2.37
		38 × 184	5.02	4.56	3.77	4.38	3.97	3.24	3.98	3.54	2.89
		38 × 235	6.41	5.65	4.61	5.60	4.86	3.97	5.00	4.33	3.53
		38 × 286	7.57	6.56	5.35	6.51	5.64	4.60	5.80	5.02	4.10
	Construction	38 × 89	2.43	2.20	1.93	2.12	1.93	1.68	1.93	1.75	1.53
	Standard	38 × 89	2.33	2.12	1.85	2.04	1.85	1.59	1.85	1.68	1.41
Northern Species (includes any Canadian Species covered by the NLGA Standard Grading Rules	Select	38 × 89	2.28	2.07	1.81	1.99	1.81	1.58	1.81	1.65	1.44
	Structural	38 × 140	3.59	3.26	2.85	3.14	2.85	2.49	2.85	2.59	2.26
		38 × 184	4.72	4.29	3.75	4.12	3.75	3.27	3.75	3.40	2.97
		38 × 235	6.03	5.48	4.79	5.27	4.79	4.18	4.79	4.35	3.80
		38 × 286	7.34	6.67	5.82	6.41	5.82	5.09	5.82	5.29	4.62
	No. 1 and	38 × 89	2.23	2.03	1.77	1.95	1.77	1.55	1.77	1.61	1.41
	No. 2	38 × 140	3.51	3.19	2.79	3.07	2.79	2.43	2.79	2.53	2.21
		38 × 184	4.61	4.19	3.66	4.03	3.66	3.20	3.66	3.33	2.91
		38 × 235	5.89	5.35	4.68	5.15	4.68	4.09	4.68	4.25	3.68
		38 × 286	7.17	6.52	5.58	6.26	5.69	4.80	5.69	5.17	4.27
	No. 3	38 × 89	2.18	1.98	1.73	1.90	1.73	1.50	1.73	1.57	1.33
		38 × 140	3.42	3.05	2.49	2.99	2.62	2.14	2.69	2.33	1.90
		38 × 184	4.28	3.71	3.03	3.68	3.19	2.60	3.28	2.84	2.32
		38 × 235	5.23	4.53	3.70	4.50	3.90	3.18	4.01	3.47	2.83
		38 × 286	6.07	5.26	4.29	5.22	4.52	3.69	4.65	4.03	3.29
	Construction	38 × 89	2.18	1.98	1.73	1.90	1.73	1.51	1.73	1.57	1.37
	Standard	38 × 89	2.09	1.81	1.48	1.80	1.56	1.27	1.60	1.38	1.13

Table A-5 Maximum Spans for Roof Joists – Specified Roof Snow Loads 2.5 and 3.0 kPa Forming Part of Sentence 9.23.4.2.(1)


Column 1	Column 2	Column 3	Column 4	Column 5	Column 6	Column 7	Column 8		Column 9
Commercial Designation	Grade	Joist Size, mm	Maximum Span, m
			Specified Snow Load, kPa
			2.5			3.0
			Joist Spacing, mm			Joist Spacing, mm
			300	400	600	300	400		600
Douglas Fir – Larch (includes Douglas Fir and Western Larch)	Select	38 × 89	1.99	1.81	1.58	1.88	1.71		1.49
	Structural	38 × 140	3.14	2.85	2.49	2.95	2.68		2.34
		38 × 184	4.12	3.75	3.27	3.88	3.53		3.08
		38 × 235	5.27	4.79	4.18	4.96	4.50		3.93
		38 × 286	6.41	5.82	5.09	6.03	5.48		4.79
	No. 1 and	38 × 89	1.91	1.74	1.52	1.80	1.63		1.43
	No. 2	38 × 140	3.01	2.73	2.39	2.83	2.57		2.25
		38 × 184	3.95	3.59	3.14	3.72	3.38		2.90
		38 × 235	5.05	4.59	3.84	4.75	4.32		3.55
		38 × 286	6.14	5.46	4.46	5.78	5.05		4.12
	No. 3	38 × 89	1.74	1.50	1.23	1.60	1.39		1.13
		38 × 140	2.48	2.15	1.75	2.29	1.98		1.62
		38 × 184	3.01	2.61	2.13	2.79	2.41		1.97
		38 × 235	3.69	3.19	2.61	3.41	2.95		2.41
		38 × 286	4.28	3.70	3.03	3.95	3.42		2.79
	Construction	38 × 89	1.85	1.68	1.47	1.74	1.58		1.38
	Standard	38 × 89	1.68	1.45	1.19	1.55	1.34		1.10
Hem – Fir (includes Western Hemlock and Amabilis Fir)	Select	38 × 89	1.97	1.79	1.56	1.85	1.68		1.47
	Structural	38 × 140	3.10	2.81	2.46	2.91	2.65		2.31
		38 × 184	4.07	3.70	3.23	3.83	3.48		3.04
		38 × 235	5.20	4.72	4.12	4.89	4.44		3.88
		38 × 286	6.32	5.75	5.02	5.95	5.41		4.72
	No. 1 and	38 × 89	1.91	1.74	1.52	1.80	1.63		1.43
	No. 2	38 × 140	3.01	2.73	2.39	2.83	2.57		2.25
		38 × 184	3.95	3.59	3.14	3.72	3.38		2.95
		38 × 235	5.05	4.59	4.01	4.75	4.32		3.72
		38 × 286	6.14	5.58	4.68	5.78	5.25		4.32
	No. 3	38 × 89	1.85	1.68	1.47	1.74	1.58		1.38
		38 × 140	2.91	2.65	2.16	2.74	2.45		2.00
		38 × 184	3.72	3.22	2.63	3.44	2.98		2.43
		38 × 235	4.55	3.94	3.22	4.20	3.64		2.97
		38 × 286	5.28	4.57	3.73	4.88	4.22		3.45
	Construction	38 × 89	1.85	1.68	1.47	1.74	1.58		1.38
	Standard	38 × 89	1.76	1.52	1.24	1.62	1.40		1.15
Spruce – Pine – Fir (includes Spruce (all species except Coast Sitka Spruce) Jack Pine, Lodgepole Pine, Balsam Fir and Alpine Fir)	Select	38 × 89	1.88	1.71	1.49	1.77		1.61		1.41
	Structural	38 × 140	2.96	2.69	2.35	2.79		2.53		2.21
		38 × 184	3.89	3.54	3.09	3.66		3.33		2.91
		38 × 235	4.97	4.52	3.94	4.68		4.25		3.71
		38 × 286	6.05	5.50	4.80	5.69		5.17		4.52
	No. 1 and	38 × 89	1.82	1.65	1.44	1.71		1.56		1.36
	No. 2	38 × 140	2.86	2.60	2.27	2.69		2.45		2.14
		38 × 184	3.76	3.42	2.99	3.54		3.22		2.81
		38 × 235	4.81	4.37	3.82	4.52		4.11		3.59
		38 × 286	5.85	5.31	4.64	5.50		5.00		4.37
	No. 3	38 × 89	1.79	1.62	1.42	1.68		1.53		1.34
		38 × 140	2.81	2.56	2.16	2.65		2.40		2.005
		38 × 184	3.70	3.22	2.63	3.44		2.98		2.43
		38 × 235	4.55	3.94	3.22	4.20		3.64		2.97
		38 × 286	5.28	4.57	3.73	4.88		4.22		3.45
	Construction	38 × 89	1.79	1.62	1.42	1.68		1.53		1.34
	Standard	38 × 89	1.72	1.56	1.29	1.62		1.46		1.19
Northern Species (includes any Canadian Species covered by the NLGA Standard Grading Rules	Select	38 × 89	1.68	1.53	1.34	1.58		1.44		1.26
	Structural	38 × 140	2.65	2.40	2.10	2.49		2.26		1.98
		38 × 184	3.48	3.16	2.76	3.27		2.97		2.60
		38 × 235	4.44	4.04	3.53	4.18		3.80		3.32
		38 × 286	5.41	4.91	4.29	5.09		4.62		4.04
	No. 1 and	38 × 89	1.64	1.49	1.31	1.55		1.41		1.23
	No. 2	38 × 140	2.59	2.35	2.05	2.43		2.21		1.93
		38 × 184	3.40	3.09	2.70	3.20		2.91		2.53
		38 × 235	4.34	3.94	3.35	4.09		3.71		3.10
		38 × 286	5.28	4.76	3.89	4.97		4.40		3.59
	No. 3	38 × 89	1.60	1.46	1.21	1.51		1.37		1.12
		38 × 140	2.45	2.12	1.73	2.26		1.96		1.60
		38 × 184	2.98	2.58	2.11	2.76		2.39		1.95
		38 × 235	3.65	3.16	2.58	3.37		2.92		2.38
		38 × 286	4.23	3.66	2.99	3.91		3.39		2.76
	Construction	38 × 89	1.60	1.46	1.27	1.51		1.37		1.20
	Standard	38 × 89	1.46	1.26	1.03	1.34		1.16		0.95

Table A-6 Maximum Spans for Roof Rafters – Specified Roof Snow Loads 1.0 to 2.0 kPa Forming Part of Sentence 9.23.4.2.(1)


Column 1	Column 2	Column 3	Col. 4	Col. 5	Col. 6	Col. 7	Col. 8	Col. 9	Col. 10	Col. 11	Col. 12
Commercial Designation	Grade	Rafter Size, mm	Maximum Span, m
			Specified Snow Load, kPa
			1.0			1.5			2.0
			Rafter Spacing, mm			Rafter Spacing, mm			Rafter Spacing, mm
			300	400	600	300	400	600	300	400	600
Douglas Fir – Larch (includes Douglas Fir and Western Larch)	Select	38 × 89	3.41	3.10	2.71	2.98	2.71	2.37	2.71	2.46	2.15
	Structural	38 × 140	5.37	4.88	4.26	4.69	4.26	3.72	4.26	3.87	3.38
		38 × 184	7.05	6.41	5.60	6.16	5.60	4.89	5.60	5.09	4.44
		38 × 235	9.01	8.18	7.15	7.87	7.15	6.24	7.15	6.49	5.62
		38 × 286	10.96	9.96	8.70	9.58	8.70	7.40	8.70	7.90	6.52
	No. 1 and	38 × 89	3.27	2.97	2.59	2.86	2.59	2.27	2.59	2.36	2.06
	No. 2	38 × 140	5.14	4.67	3.95	4.49	4.08	3.34	4.08	3.60	2.94
		38 × 184	6.76	5.88	4.80	5.74	4.97	4.06	5.06	4.38	3.58
		38 × 235	8.30	7.19	5.87	7.02	6.08	4.96	6.19	5.36	4.38
		38 × 286	9.63	8.34	6.81	8.14	7.05	5.76	7.18	6.22	5.08
	No. 3	38 × 89	2.65	2.30	1.87	2.24	1.94	1.58	1.98	1.71	1.40
		38 × 140	3.78	3.28	2.68	3.20	2.77	2.26	2.82	2.44	1.99
		38 × 184	4.61	3.99	3.26	3.89	3.37	2.75	3.43	2.97	2.43
		38 × 235	5.63	4.88	3.98	4.76	4.12	3.37	4.20	3.64	2.97
		38 × 286	6.53	5.66	4.62	5.52	4.78	3.91	4.87	4.22	3.44
	Construction	38 × 89	3.17	2.88	2.42	2.77	2.50	2.04	2.51	2.21	1.80
	Standard	38 × 89	2.56	2.22	1.81	2.17	1.88	1.53	1.91	1.65	1.35
Hem – Fir (includes Western Hemlock and Amabilis Fir)	Select	38 × 89	3.36	3.06	2.67	2.94	2.67	2.33	2.67	2.43	2.12
	Structural	38 × 140	5.29	4.81	4.20	4.62	4.20	3.67	4.20	3.82	3.33
		38 × 184	6.96	6.32	5.52	6.08	5.52	4.82	5.52	5.02	4.38
		38 × 235	8.88	8.07	7.05	7.76	7.05	6.16	7.05	6.41	5.54
		38 × 286	10.81	9.82	8.58	9.45	8.58	7.28	8.58	7.80	6.42
	No. 1 and	38 × 89	3.27	2.97	2.59	2.86	2.59	2.27	2.59	2.36	2.06
	No. 2	38 × 140	5.14	4.67	4.08	4.49	4.08	3.50	4.08	3.71	3.08
		38 × 184	6.76	6.14	5.04	5.90	5.21	4.26	5.31	4.60	3.75
		38 × 235	8.63	7.54	6.16	7.36	6.37	5.20	6.49	5.62	4.59
		38 × 286	10.11	8.75	7.15	8.54	7.40	6.04	7.53	6.52	5.33
	No. 3	38 × 89	3.17	2.83	2.31	2.76	2.39	1.95	2.44	2.11	1.72
		38 × 140	4.67	4.04	3.30	3.95	3.42	2.79	3.48	3.01	2.46
		38 × 184	5.68	4.92	4.02	4.80	4.16	3.40	4.23	3.67	2.99
		38 × 235	6.95	6.02	4.91	5.87	5.08	4.15	5.18	4.48	3.66
		38 × 286	8.06	6.98	5.70	6.81	5.90	4.82	6.01	5.20	4.25
	Construction	38 × 89	3.17	2.88	2.51	2.77	2.51	2.14	2.51	2.28	1.89
	Standard	38 × 89	2.68	2.32	1.90	2.27	1.96	1.60	2.00	1.73	1.41
Spruce – Pine – Fir (includes Spruce (all species except Coast Sitka Spruce) Jack Pine, Lodgepole Pine, Balsam Fir and Alpine Fir)	Select	38 × 89	3.22	2.92	2.55	2.81	2.55	2.23	2.55	2.32	2.03
	Structural	38 × 140	5.06	4.60	4.02	4.42	4.02	3.51	4.02	3.65	3.19
		38 × 184	6.65	6.05	5.28	5.81	5.28	4.61	5.28	4.80	4.19
		38 × 235	8.50	7.72	6.74	7.42	6.74	5.89	6.74	6.13	5.35
		38 × 286	10.34	9.40	8.21	9.03	8.21	7.17	8.21	7.46	6.52
	No. 1 and	38 × 89	3.11	2.83	2.47	2.72	2.47	2.16	2.47	2.24	1.96
	No. 2	38 × 140	4.90	4.45	3.89	4.28	3.89	3.40	3.89	3.53	3.08
		38 × 184	6.44	5.85	5.11	5.62	5.11	4.41	5.11	4.64	3.89
		38 × 235	8.22	7.47	6.38	7.18	6.52	5.39	6.52	5.82	4.75
		38 × 286	10.00	9.06	7.40	8.74	7.66	6.25	7.80	6.76	5.52
	No. 3	38 × 89	3.06	2.78	2.31	2.67	2.39	1.95	2.43	2.11	1.72
		38 × 140	4.67	4.04	3.30	3.95	3.42	2.79	3.48	3.01	2.46
		38 × 184	5.68	4.92	4.02	4.80	4.16	3.40	4.23	3.67	2.99
		38 × 235	6.95	6.02	4.91	5.87	5.08	4.15	5.18	4.48	3.66
		38 × 286	8.06	6.98	5.70	6.81	5.90	4.82	6.01	5.20	4.25
	Construction	38 × 89	3.06	2.78	2.43	2.67	2.43	2.12	2.43	2.20	1.93
	Standard	38 × 89	2.78	2.41	1.97	2.35	2.04	1.66	2.07	1.79	1.47
Northern Species (includes any Canadian species covered by the NLGA Standard Grading Rules)	Select	38 × 89	2.88	2.61	2.28	2.51	2.28	1.99	2.28	2.07	1.81
	Structural	38 × 140	4.53	4.11	3.59	3.95	3.59	3.14	3.59	3.26	2.85
		38 × 184	5.95	5.40	4.72	5.20	4.72	4.12	4.72	4.29	3.68
		38 × 235	7.60	6.90	6.03	6.64	6.03	5.11	6.03	5.48	4.51
		38 × 286	9.25	8.40	7.01	8.08	7.26	5.93	7.34	6.40	5.23
	No. 1 and	38 × 89	2.81	2.55	2.23	2.46	2.23	1.95	2.23	2.03	1.77
	No. 2	38 × 140	4.42	4.02	3.44	3.86	3.51	2.91	3.51	3.14	2.56
		38 × 184	5.81	5.13	4.19	5.00	4.33	3.54	4.41	3.82	3.12
		38 × 235	7.24	6.27	5.12	6.12	5.30	4.33	5.40	4.67	3.82
		38 × 286	8.40	7.27	5.94	7.10	6.15	5.02	6.26	5.42	4.43
	No. 3	38 × 89	2.62	2.27	1.85	2.22	1.92	1.57	1.95	1.69	1.38
		38 × 140	3.74	3.24	2.65	3.16	2.74	2.24	2.79	2.42	1.97
		38 × 184	4.56	3.94	3.22	3.85	3.33	2.72	3.40	2.94	2.40
		38 × 235	5.57	4.82	3.94	4.71	4.08	3.33	4.15	3.60	2.94
		38 × 286	6.46	5.60	4.57	5.46	4.73	3.86	4.82	4.17	3.41
	Construction	38 × 89	2.74	2.49	2.11	2.40	2.18	1.90	2.18	1.93	1.57
	Standard	38 × 89	2.22	1.93	1.57	1.88	1.63	1.33	1.66	1.44	1.17

Table A-7 Maximum Spans for Roof Rafters – Specified Roof Snow Loads 2.5 and 3.0 kPa Forming Part of Sentence 9.23.4.2.(1)


Column 1	Column 2	Column 3	Column 4	Column 5	Column 6	Column 7	Column 8	Column 9
Commercial Designation	Grade	Rafter Size, mm	Maximum Span, m
			Specified Snow Load, kPa
			2.5			3.0
			Rafter Spacing, mm			Rafter Spacing, mm
			300	400	600	300	400	600
Douglas Fir – Larch (includes Douglas Fir and Western Larch)	Select	38 × 89	2.51	2.28	1.99	2.37	2.15	1.88
	Structural	38 × 140	3.95	3.59	3.14	3.72	3.38	2.95
		38 × 184	5.20	4.72	4.12	4.89	4.44	3.83
		38 × 235	6.64	6.03	5.08	6.24	5.67	4.68
		38 × 286	8.08	7.23	5.90	7.60	6.65	5.43
	No. 1 and	38 × 89	2.41	2.19	1.86	2.27	2.06	1.71
	No. 2	38 × 140	3.76	3.26	2.66	3.46	3.00	2.45
		38 × 184	4.58	3.96	3.24	4.21	3.65	2.98
		38 × 235	5.60	4.85	3.96	5.15	4.46	3.64
		38 × 286	6.50	5.63	4.59	5.98	5.17	4.23
	No. 3	38 × 89	1.79	1.55	1.26	1.64	1.42	1.16
		38 × 140	2.55	2.21	1.80	2.35	2.03	1.66
		38 × 184	3.10	2.69	2.20	2.86	2.47	2.02
		38 × 235	3.80	3.29	2.68	3.49	3.02	2.47
		38 × 286	4.41	3.82	3.12	4.05	3.51	2.87
	Construction	38 × 89	2.30	2.00	1.63	2.12	1.84	1.50
	Standard	38 × 89	1.73	1.50	1.22	1.59	1.38	1.12
Hem – Fir (includes Western Hemlock and Amabilis Fir)	Select	38 × 89	2.48	2.25	1.97	2.33	2.12	1.85
	Structural	38 × 140	3.90	3.54	3.10	3.67	3.33	2.91
		38 × 184	5.13	4.66	4.07	4.82	4.38	3.77
		38 × 235	6.55	5.95	5.01	6.16	5.60	4.61
		38 × 286	7.97	7.12	5.81	7.50	6.55	5.34
	No. 1 and	38 × 89	2.41	2.19	1.91	2.27	2.06	1.80
	No. 2	38 × 140	3.79	3.42	2.79	3.57	3.14	2.57
		38 × 184	4.80	4.16	3.40	4.42	3.83	3.12
		38 × 235	5.87	5.08	4.15	5.40	4.68	3.82
		38 × 286	6.81	5.90	4.82	6.27	5.43	4.43
	No. 3	38 × 89	2.21	1.91	1.56	2.03	1.76	1.43
		38 × 140	3.15	2.73	2.23	2.90	2.51	2.05
		38 × 184	3.83	3.32	2.71	3.52	3.05	2.49
		38 × 235	4.68	4.06	3.31	4.31	3.73	3.05
		38 × 286	5.53	4.71	3.84	5.00	4.33	3.54
	Commercial	38 × 89	2.33	2.09	1.71	2.20	1.93	1.57
	Standard	38 × 89	1.81	1.57	1.28	1.66	1.44	1.18
Spruce – Pine – Fir (includes Spruce (all species except Coast Sitka Spruce) Jack Pine, Lodgepole Pine, Balsam Fir and Alpine Fir)	Select	38 × 89	2.37	2.15	1.88	2.23	2.03	1.77
	Structural	38 × 140	3.73	3.39	2.96	3.51	3.19	2.79
		38 × 184	4.90	4.45	3.89	4.61	4.19	3.66
		38 × 235	6.26	5.69	4.97	5.89	5.35	4.68
		38 × 286	7.62	6.92	5.90	7.17	6.52	5.43
	No. 1 and	38 × 89	2.29	2.08	1.82	2.16	1.96	1.71
	No. 2	38 × 140	3.61	3.28	2.86	3.40	3.08	2.66
		38 × 184	4.74	4.31	3.52	4.46	3.96	3.23
		38 × 235	6.06	5.27	4.30	5.59	4.84	3.96
		38 × 286	7.06	6.11	4.99	6.49	5.62	4.59
	No. 3	38 × 89	2.21	1.91	1.56	2.03	1.76	1.43
		38 × 140	3.15	2.73	2.23	2.90	2.51	2.05
		38 × 184	3.83	3.32	2.71	3.52	3.05	2.49
		38 × 235	4.68	4.06	3.31	4.31	3.73	3.05
		38 × 286	5.43	4.71	3.84	5.00	4.33	3.54
	Construction	38 × 89	2.25	2.05	1.77	2.12	1.93	1.63
	Standard	38 × 89	1.87	1.62	1.33	1.72	1.49	1.22
Northern Species (includes any Canadian species covered by the NLGA Standard Grading Rules)	Select	38 × 89	2.12	1.93	1.68	1.99	1.81	1.58
	Structural	38 × 140	3.33	3.03	2.65	3.14	2.85	2.49
		38 × 184	4.38	3.98	3.33	4.12	3.75	3.07
		38 × 235	5.60	4.99	4.08	5.27	4.59	3.75
		38 × 286	6.69	5.79	4.73	6.15	5.33	4.35
	No. 1 and	38 × 89	2.07	1.88	1.62	1.95	1.77	1.49
	No. 2	38 × 140	3.26	2.84	2.32	3.02	2.61	2.13
		38 × 184	3.99	3.46	2.82	3.67	3.18	2.60
		38 × 235	4.88	4.23	3.45	4.49	3.89	3.17
		38 × 286	5.66	4.90	4.00	5.21	4.51	3.68
	No. 3	38 × 89	1.77	1.53	1.25	1.63	1.41	1.15
		38 × 140	2.52	2.19	1.78	2.32	2.01	1.64
		38 × 184	3.07	2.66	2.17	2.82	2.45	2.00
		38 × 235	3.76	3.25	2.66	3.45	2.99	2.44
		38 × 286	4.36	3.77	3.08	4.01	3.47	2.83
	Construction	38 × 89	2.01	1.74	1.42	1.85	1.60	1.31
	Standard	38 × 89	1.50	1.30	1.06	1.38	1.19	0.98

Table A-8 Maximum Spans for Built-up Floor Beams Supporting not more than One Floor(1)(2) Forming Part of Sentence 9.23.4.2.(3)


Column 1	Column 2	Column 3	Col. 4	Col. 5	Col. 6	Col. 7	Col. 8	Col. 9		Col. 10	Col. 11	Col. 12
Commercial Designation	Grade	Supported Length, mm⁽³⁾⁽⁴⁾	Maximum Span, m⁽⁵⁾⁽⁶⁾
			Size of Built-up Beam, mm
			3 – 38 ×184	4 – 38 × 184	5 – 38 × 184	3 – 38 × 235	4 – 38 × 235	5 – 38 × 235	3 – 38 × 286		4 – 38 × 286	5 – 38 × 286
Douglas Fir – Larch (includes Douglas Fir and Western Larch)	Select	2.4	3.36	3.70	3.99	4.30	4.73	5.09	5.23		5.66	5.99
	Structural	3.0	3.12	3.44	3.70	3.99	4.39	4.73	4.84		5.34	5.66
		3.6	2.94	3.23	3.48	3.75	4.13	4.45	4.41		5.03	5.41
		4.2	2.79	3.07	3.31	3.52	3.92	4.23	4.09		4.72	5.14
		4.8	2.67	2.94	3.17	3.29	3.75	4.04	3.82		4.41	4.92
		5.4	2.54	2.83	3.04	3.11	3.59	3.89	3.60		4.16	4.65
		6.0	2.41	2.73	2.94	2.95	3.40	3.75	3.42		3.95	4.41
	No. 1 and	2.4	2.97	3.42	3.82	3.63	4.19	4.68	4.21		4.86	5.43
	No. 2	3.0	2.65	3.06	3.42	3.24	3.75	4.19	3.76		4.35	4.86
		3.6	2.42	2.80	3.13	2.96	3.42	3.82	3.44		3.97	4.44
		4.2	2.24	2.59	2.89	2.74	3.17	3.54	3.18		3.67	4.11
		4.8	2.10	2.42	2.71	2.56	2.96	3.31	2.98		3.44	3.84
		5.4	1.98	2.28	2.55	2.42	2.79	3.12	2.81		3.24	3.62
		6.0	1.88	2.17	2.42	2.29	2.65	2.96	2.66		3.07	3.44
Hem – Fir (includes Western Hemlock and Amabilis Fir)	Select	2.4	3.32	3.65	3.93	4.24	4.66	5.03	5.16		5.61	5.93
	Structural	3.0	3.08	3.39	3.65	3.93	4.33	4.66	4.76		5.27	5.61
		3.6	2.90	3.19	3.44	3.70	4.08	4.39	4.35		4.96	5.34
		4.2	2.75	3.03	3.27	3.47	3.87	4.17	4.02		4.65	5.07
		4.8	2.63	2.90	3.12	3.24	3.70	3.99	3.66		4.35	4.85
		5.4	2.49	2.79	3.00	2.95	3.53	3.83	3.32		4.10	4.58
		6.0	2.28	2.69	2.90	2.70	3.35	3.70	3.04		3.87	4.35
	No. 1 and	2.4	3.11	3.55	3.82	3.80	4.39	4.88	4.41		5.10	5.70
	No. 2	3.0	2.78	3.21	3.55	3.40	3.93	4.39	3.95		4.56	5.10
		3.6	2.54	2.93	3.28	3.11	3.59	4.01	3.60		4.16	4.65
		4.2	2.35	2.72	3.04	2.88	3.32	3.71	3.34		3.85	4.31
		4.8	2.20	2.54	2.84	2.69	3.11	3.47	3.12		3.60	4.03
		5.4	2.07	2.39	2.68	2.54	2.93	3.27	2.94		3.40	3.80
		6.0	1.97	2.27	2.54	2.41	2.78	3.11	2.79		3.22	3.60
Spruce – Pine – Fir (includes Spruce (all species except Coast Sitka Spruce) Jack Pine, Lodgepole Pine, Balsam Fir and Alpine Fir)	Select	2.4	3.17	3.49	3.76	4.05	4.46	4.81	4.93		5.42	5.73
	Structural	3.0	2.95	3.24	3.49	3.76	4.14	4.46	4.58		5.04	5.42
		3.6	2.77	3.05	3.29	3.54	3.90	4.20	4.31		4.74	5.11
		4.2	2.63	2.90	3.12	3.36	3.70	3.99	4.09		4.51	4.85
		4.8	2.52	2.77	2.99	3.22	3.54	3.81	3.82		4.31	4.64
		5.4	2.42	2.67	2.87	3.09	3.41	3.67	3.60		4.14	4.46
		6.0	2.34	2.57	2.77	2.95	3.29	3.54	3.32		3.95	4.31
	No. 1 and	2.4	3.07	3.38	3.64	3.92	4.32	4.65	4.57		5.25	5.59
	No. 2	3.0	2.85	3.14	3.38	3.52	4.01	4.32	4.09		4.72	5.25
		3.6	2.63	2.95	3.18	3.22	3.71	4.06	3.73		4.31	4.82
		4.2	2.44	2.80	3.02	2.98	3.44	3.84	3.46		3.99	4.46
		4.8	2.28	2.63	2.89	2.79	3.22	3.60	3.23		3.73	4.17
		5.4	2.15	2.48	2.77	2.63	3.03	3.39	3.05		3.52	3.93
		6.0	2.04	2.35	2.63	2.49	2.88	3.22	2.89		3.34	3.73
Northern Species (includes any Canadian species covered by the NLGA Standard GradingRules)	Select	2.4	2.84	3.12	3.36	3.62	3.99	4.30	4.33		4.85	5.23
	Structural	3.0	2.63	2.90	3.12	3.34	3.70	3.99	3.88		4.47	4.85
		3.6	2.48	2.73	2.94	3.05	3.48	3.75	3.54		4.08	4.57
		4.2	2.31	2.59	2.79	2.82	3.26	3.57	3.28		3.78	4.23
		4.8	2.16	2.48	2.67	2.64	3.05	3.41	3.06		3.54	3.96
		5.4	2.04	2.35	2.57	2.49	2.87	3.21	2.89		3.34	3.73
		6.0	1.93	2.23	2.48	2.36	2.73	3.05	2.74		3.16	3.54
	No. 1 and	2.4	2.59	2.99	3.29	3.16	3.65	4.08	3.67		4.24	4.74
	No. 2	3.0	2.31	2.67	2.99	2.83	3.27	3.65	3.28		3.79	4.24
		3.6	2.11	2.44	2.73	2.58	2.98	3.33	3.00		3.46	3.87
		4.2	1.95	2.26	2.52	2.39	2.76	3.09	2.77		3.20	3.58
		4.8	1.83	2.11	2.36	2.24	2.58	2.89	2.59		3.00	3.35
		5.4	1.72	1.99	2.23	2.11	2.43	2.72	2.45		2.82	3.16
		6.0	1.64	1.89	2.11	2.00	2.31	2.58	2.32		2.68	3.00

Notes to Table A-8:

⁽¹⁾ Beam spans apply only where the floors serve residential areas as described in Table 4.1.5.3., or the uniformly distributed live load on the floors does not exceed that specified for residential areas as described in Table 4.1.5.3.

⁽²⁾ When the floors have a concrete topping of not more than 51 mm, the spans must be multiplied by 0.8

⁽³⁾ Supported length means half the sum of the joists spans on both sides of the beam.

⁽⁴⁾ Straight interpolation may be used for other supported lengths.

⁽⁵⁾ Spans are clear spans between supports. For total span, add two bearing lengths.

⁽⁶⁾ 3-ply beams with supported lengths greater than 4.2 m require minimum bearing length of 114 mm. All other beams require minimum bearing length of 76 mm.

Table A-9 Maximum Spans for Built-up Floor Beams Supporting not more than Two Floors(1)(2) Forming Part of Sentence 9.23.4.2.(3)

Column 1	Column 2	Column 3	Col. 4	Col. 5	Col. 6	Col. 7	Col. 8	Col. 9	Col. 10	Col. 11	Col. 12
Commercial Designation	Grade	Supported Length, mm⁽³⁾⁽⁴⁾	Maximum Span, m⁽⁵⁾⁽⁶⁾
			Size of Built-up Beam, mm
			3 – 38 × 184	4 – 38 × 184	5 – 38 × 184	3 – 38 × 235	4 – 38 × 235	5 – 38 × 235	3 – 38 × 286	4 – 38 × 286	5 – 38 × 286
Douglas Fir – Larch (includes Douglas Fir and Western Larch)	Select	2.4	2.80	3.08	3.32	3.49	3.93	4.24	4.05	4.67	5.16
	Structural	3.0	2.55	2.86	3.08	3.12	3.60	3.93	3.62	4.18	4.67
		3.6	2.33	2.69	2.90	2.85	3.29	3.68	3.30	3.82	4.27
		4.2	2.16	2.49	2.75	2.64	3.04	3.40	2.99	3.53	3.95
		4.8	2.00	2.33	2.60	2.38	2.85	3.18	2.69	3.30	3.69
		5.4	1.82	2.20	2.45	2.17	2.68	3.00	2.45	3.08	3.48
		6.0	1.67	2.08	2.33	2.00	2.51	2.85	2.26	2.83	3.30
	No. 1 and	2.4	2.22	2.56	2.87	2.72	3.14	3.51	3.15	3.64	4.07
	No.2	3.0	1.99	2.29	2.56	2.43	2.80	3.14	2.82	3.25	3.64
		3.6	1.81	2.09	2.34	2.22	2.56	2.86	2.57	2.97	3.32
		4.2	1.68	1.94	2.17	2.05	2.37	2.65	2.38	2.75	3.07
		4.8	1.57	1.81	2.03	1.92	2.22	2.48	2.23	2.57	2.88
		5.4	1.48	1.71	1.91	1.81	2.09	2.34	2.10	2.43	2.71
		6.0	1.40	1.62	1.81	1.72	1.98	2.22	1.99	2.30	2.57
Hem – Fir (includes Western Hemlock and Amabilis Fir)	Select	2.4	2.76	3.04	3.27	3.43	3.88	4.18	3.99	4.60	5.09
	Structural	3.0	2.51	2.82	3.04	2.97	3.55	3.88	3.34	4.12	4.60
		3.6	2.15	2.65	2.86	2.56	3.24	3.62	2.88	3.65	4.20
		4.2	1.90	2.40	2.72	2.26	2.85	3.35	2.55	3.21	3.87
		4.8	1.70	2.15	2.56	2.03	2.56	3.08	2.30	2.88	3.46
		5.4	1.56	1.95	2.35	1.86	2.32	2.79	2.11	2.62	3.14
		6.0	1.44	1.79	2.15	1.72	2.14	2.56	1.96	2.42	2.88
	No. 1 and	2.4	2.33	2.69	3.01	2.85	3.29	3.68	3.30	3.82	4.27
	No.2	3.0	2.08	2.41	2.69	2.55	2.94	3.29	2.96	3.41	3.82
		3.6	1.90	2.20	2.45	2.33	2.68	3.00	2.70	3.12	3.48
		4.2	1.76	2.03	2.27	2.15	2.49	2.78	2.50	2.88	3.22
		4.8	1.65	1.90	2.13	2.01	2.33	2.60	2.30	2.70	3.02
		5.4	1.55	1.79	2.00	1.86	2.19	2.45	2.11	2.54	2.84
		6.0	1.44	1.70	1.90	1.72	2.08	2.33	1.96	2.41	2.70
Spruce – Pine – Fir (includes Spruce (all species except Coast Sitka Spruce) Jack Pine, Lodgepole Pine, Balsam Fir and Alpine Fir)	Select	2.4	2.64	2.91	3.13	3.37	3.71	4.00	4.05	4.52	4.87
	Structural	3.0	2.45	2.70	2.91	3.12	3.45	4.71	3.62	4.18	4.52
		3.6	2.31	2.54	2.73	2.79	3.24	3.49	3.14	3.82	4.25
		4.2	2.07	2.41	2.60	2.46	3.04	3.32	2.77	3.50	3.95
		4.8	1.85	2.31	2.48	2.21	2.79	3.17	2.50	3.14	3.69
		5.4	1.69	2.13	2.39	2.02	2.53	3.00	2.28	2.85	3.42
		6.0	1.56	1.95	2.31	1.86	2.32	2.79	2.11	2.62	3.14
	No. 1 and	2.4	2.41	2.79	3.03	2.95	3.41	3.81	3.42	3.95	4.42
	No.2	3.0	2.16	2.49	2.79	2.64	3.05	3.41	3.06	3.53	3.95
		3.6	1.97	2.27	2.54	2.41	2.78	3.11	2.79	3.23	3.61
		4.2	1.82	2.11	2.35	2.23	2.57	2.88	2.59	2.99	3.34
		4.8	1.71	1.97	2.20	2.09	2.41	2.69	2.42	2.79	3.12
		5.4	1.61	1.86	2.08	1.97	2.27	2.54	2.28	2.63	2.95
		6.0	1.53	1.76	1.97	1.86	2.15	2.41	2.11	2.50	2.79
Northern Species (includes any Canadian species covered by the NLGA Standard Grading Rules)	Select	2.4	2.29	2.60	2.80	2.80	3.23	3.57	3.24	3.75	4.19
	Structural	3.0	2.04	2.36	2.60	2.50	2.89	3.23	2.90	3.35	3.75
		3.6	1.87	2.16	2.41	2.28	2.64	2.95	2.65	3.06	3.42
		4.2	1.73	2.00	2.23	2.11	2.44	2.73	2.45	2.83	3.17
		4.8	1.62	1.87	2.09	1.98	2.28	2.55	2.29	2.65	2.96
		5.4	1.52	1.76	1.97	1.86	2.15	2.41	2.11	2.50	2.79
		6.0	1.44	1.67	1.87	1.72	2.04	2.28	1.96	2.37	2.65
	No. 1 and	2.4	1.94	2.24	2.50	2.37	2.73	3.06	2.75	3.17	3.55
	No.2	3.0	1.73	2.00	2.24	2.12	2.44	2.73	2.46	2.84	3.17
		3.6	1.58	1.83	2.04	1.93	2.23	2.50	2.24	2.59	2.90
		4.2	1.46	1.69	1.89	1.79	2.07	2.31	2.08	2.40	2.68
		4.8	1.37	1.58	1.77	1.67	1.93	2.16	1.94	2.24	2.51
		5.4	1.29	1.49	1.67	1.58	1.82	2.04	1.83	2.11	2.36
		6.0	1.22	1.41	1.58	1.50	1.73	1.93	1.74	2.01	2.24

Notes to Table A-9:

⁽¹⁾ Beam spans apply only where the floors serve residential areas as described in Table 4.1.5.3., or the uniformly distributed live load on the floors does not exceed that specified for residential areas as described in Table 4.1.5.3.

⁽²⁾ When the floors have a concrete topping of not more than 51 mm, the spans must be multiplied by 0.8

⁽³⁾ Supported length means half the sum of the joists spans on both sides of the beam.

⁽⁴⁾ Straight interpolation may be used for other supported lengths.

⁽⁵⁾ Spans are clear spans between supports. For total span, add two bearing lengths.

⁽⁶⁾ 3-ply beams require minimum bearing length of 114 mm. 4-ply and 5-ply beams with supported lengths greater than 3 m require minimum bearing length of 114 mm. All other beams require minimum bearing length of 76 mm.

Table A-10 Maximum Spans for Built-up Floor Beams Supporting not more than Three Floors(1)(2) Forming Part of Sentence 9.23.4.2.(3)

Column 1	Column 2	Column 3	Col. 4	Col. 5	Col. 6	Col. 7	Col. 8	Col. 9	Col. 10	Col. 11	Col. 12
Commercial Designation	Grade	Supported Length, mm⁽³⁾⁽⁴⁾	Maximum Span, m⁽⁵⁾⁽⁶⁾
			Size of Built-up Beam, mm
			3 – 38 × 184	4 – 38 × 184	5 – 38 × 184	3 – 38 × 235	4 – 38 × 235	5 – 38 × 235	3 – 38 × 286	4 – 38 × 286	5 – 38 × 286
Douglas Fir – Larch (includes Douglas Fir and Western Larch)	Select	2.4	2.38	2.74	2.95	2.91	3.36	3.75	3.37	3.89	4.35
	Structural	3.0	2.13	2.46	2.74	2.60	3.00	3.36	2.92	3.48	3.89
		3.6	1.88	2.24	2.51	2.24	2.74	3.06	2.53	3.18	3.56
		4.2	1.66	2.08	2.32	1.99	2.49	2.84	2.25	2.81	3.29
		4.8	1.50	1.88	2.17	1.80	2.24	2.65	2.04	2.53	3.02
		5.4	1.38	1.71	2.05	1.65	2.04	2.44	1.88	2.31	2.75
		6.0	1.28	1.58	1.88	1.53	1.89	2.24	1.75	2.14	2.53
	No. 1 and	2.4	1.85	2.14	2.39	2.26	2.61	2.92	2.63	3.03	3.39
	No.2	3.0	1.66	1.91	2.14	2.02	2.34	2.61	2.35	2.71	3.03
		3.6	1.51	1.74	1.95	1.85	2.13	2.39	2.14	2.48	2.77
		4.2	1.40	1.62	1.81	1.71	1.98	2.21	1.99	2.29	2.56
		4.8	1.31	1.51	1.69	1.60	1.85	2.07	1.86	2.14	2.40
		5.4	1.23	1.42	1.59	1.51	1.74	1.95	1.75	2.02	2.26
		6.0	1.17	1.35	1.51	1.43	1.65	1.85	1.66	1.92	2.14
Hem – Fir (includes Western Hemlock and Amabilis Fir)	Select	2.4	2.22	2.70	2.91	2.64	3.31	3.70	2.98	3.78	4.29
	Structural	3.0	1.85	2.35	2.70	2.21	2.79	3.31	2.50	3.14	3.78
		3.6	1.61	2.02	2.43	1.92	2.40	2.89	2.18	2.71	3.24
		4.2	1.43	1.78	2.14	1.71	2.13	2.54	1.95	2.40	2.86
		4.8	1.30	1.61	1.92	1.56	1.92	2.28	1.77	2.18	2.58
		5.4	1.19	1.47	1.74	1.44	1.76	2.08	1.64	2.00	2.35
		6.0	1.11	1.36	1.61	1.34	1.63	1.92	1.53	1.85	2.18
	No. 1 and	2.4	1.94	2.24	2.51	2.37	2.74	3.06	2.75	3.18	3.56
	No.2	3.0	1.74	2.00	2.24	2.12	2.45	2.74	2.46	2.84	3.18
		3.6	1.58	1.83	2.05	1.92	2.24	2.50	2.18	2.60	2.90
		4.2	1.43	1.69	1.89	1.71	2.07	2.32	1.95	2.40	2.69
		4.8	1.30	1.58	1.77	1.56	1.92	2.17	1.77	2.18	2.51
		5.4	1.19	1.47	1.67	1.44	1.76	2.04	1.64	2.00	2.35
		6.0	1.11	1.36	1.58	1.34	1.63	1.92	1.53	1.85	2.18
Spruce – Pine – Fir (includes Spruce (all species except Coast Sitka Spruce) Jack Pine, Lodgepole Pine, Balsam Fir and Alpine Fir)	Select	2.4	2.35	2.58	2.78	2.89	3.30	3.55	3.24	3.89	4.33
	Structural	3.0	2.02	2.40	2.58	2.40	3.00	3.30	2.71	3.42	3.89
		3.6	1.74	2.20	2.43	2.08	2.62	3.06	2.35	2.95	3.54
		4.2	1.55	1.94	2.31	1.85	2.31	2.77	2.10	2.61	3.12
		4.8	1.40	1.74	2.09	1.68	2.08	2.48	1.91	2.35	2.80
		5.4	1.28	1.59	1.90	1.54	1.90	2.26	1.76	2.16	2.55
		6.0	1.19	1.47	1.74	1.44	1.76	2.08	1.64	2.00	2.35
	No. 1 and	2.4	2.01	2.32	2.60	2.46	2.84	3.17	2.85	3.29	3.68
	No.2	3.0	1.80	2.08	2.32	2.20	2.54	2.84	2.55	2.95	3.29
		3.6	1.64	1.90	2.12	2.01	2.32	2.59	2.33	2.69	3.01
		4.2	1.52	1.75	2.96	1.85	2.15	2.40	2.10	2.49	2.78
		4.8	1.40	1.64	1.84	1.68	2.01	2.24	1.91	2.33	2.60
		5.4	1.28	1.55	1.73	1.54	1.89	2.12	1.76	2.16	2.46
		6.0	1.19	1.47	1.64	1.44	1.76	2.01	1.64	2.00	2.33
Northern Species (includes any Canadian species covered by the NLGA Standard Grading Rules)	Select	2.4	1.91	2.20	2.46	2.33	2.69	3.01	2.70	3.12	3.49
	Structural	3.0	1.70	1.97	2.20	2.08	2.41	2.69	2.42	2.79	3.12
		3.6	1.56	1.80	2.01	1.90	2.20	2.46	2.18	2.55	2.85
		4.2	1.43	1.66	1.86	1.71	2.03	2.27	1.95	2.36	2.64
		4.8	1.30	1.56	1.74	1.56	1.90	2.13	1.77	2.18	2.47
		5.4	1.19	1.47	1.64	1.44	1.76	2.01	1.64	2.00	2.33
		6.0	1.11	1.36	1.56	1.34	1.63	1.90	1.53	1.85	2.18
	No. 1 and	2.4	1.61	1.86	2.08	1.97	2.28	2.55	2.29	2.64	2.96
	No.2	3.0	1.44	1.67	1.86	1.76	2.04	2.28	2.05	2.36	2.64
		3.6	1.32	1.52	1.70	1.61	1.86	2.08	1.87	2.16	2.41
		4.2	1.22	1.41	1.57	1.49	1.72	1.93	1.73	2.00	2.23
		4.8	1.14	1.32	1.47	1.40	1.61	1.80	1.62	1.87	2.09
		5.4	1.08	1.24	1.39	1.32	1.52	1.70	1.53	1.76	1.97
		6.0	1.02	1.18	1.32	1.25	1.44	1.61	1.45	1.67	1.87

Notes to Table A-10:

⁽¹⁾ Beam spans apply only where the floors serve residential areas as described in Table 4.1.5.3., or the uniformly distributed live load on the floors does not exceed that specified for residential areas as described in Table 4.1.5.3.

⁽²⁾ When the floors have a concrete topping of not more than 51 mm, the spans must be multiplied by 0.8

⁽³⁾ Supported length means half the sum of the joists spans on both sides of the beam.

⁽⁴⁾ Straight interpolation may be used for other supported lengths.

⁽⁵⁾ Spans are clear spans between supports. For total span, add two bearing lengths.

⁽⁶⁾ 3-ply beams with supported lengths greater than 4.2 m require minimum bearing length of 152 mm. All other beams require minimum bearing length of 114 mm.

Table A-11 Maximum Spans for Glue-Laminated Floor Beams – 20f-E Grade(1) Forming Part of Sentence 9.23.4.2.(3)


Column 1	Column 2	Column 3	Col. 4	Col. 5	Col. 6	Col. 7	Col. 8	Col. 9	Col. 10
Number of Storeys Supported	Beam Width, mm	Supported Length, m⁽²⁾⁽³⁾	Maximum Span, m^(4)(5)(6)(7)
			Beam Depth, mm
			228	266	304	342	380	418	456
1	80	2.4	4.32	5.04	5.76	6.48	7.20	7.92	8.64
		3.0	3.87	4.51	5.15	5.80	6.44	7.09	7.73
		3.6	3.53	4.12	4.70	5.29	5.88	6.47	7.06
		4.2	3.27	3.81	4.36	4.90	5.44	5.99	6.53
		4.8	3.06	3.57	4.07	4.58	5.09	5.60	6.11
		5.4	2.88	3.36	3.84	4.32	4.80	5.28	5.76
		6.0	2.73	3.19	3.64	4.10	4.56	5.01	5.47
	130	2.4	5.51	6.43	7.35	8.26	9.18	10.10	11.02
		3.0	4.93	5.75	6.57	7.39	8.21	9.03	9.86
		3.6	4.50	5.25	6.00	6.75	7.50	8.25	9.00
		4.2	4.16	4.86	5.55	6.25	6.94	7.64	8.33
		4.8	3.90	4.54	5.19	5.84	6.49	7.14	7.79
		5.4	3.67	4.28	4.90	5.51	6.12	6.73	7.35
		6.0	3.48	4.07	4.65	5.23	5.81	6.39	6.97
2	80	2.4	3.28	3.83	4.37	4.92	5.47	6.01	6.56
		3.0	2.93	3.42	3.91	4.40	4.89	5.38	5.87
		3.6	2.68	3.12	3.57	4.02	4.46	4.91	5.36
		4.2	2.48	2.89	3.31	3.72	4.13	4.54	4.96
		4.8	2.32	2.71	3.09	3.48	3.86	4.25	4.64
		5.4	2.19	2.55	2.91	3.28	3.64	4.01	4.37
		6.0	2.07	2.42	2.77	3.11	3.46	3.80	4.15
	130	2.4	4.18	4.88	5.57	6.27	6.97	7.66	8.36
		3.0	3.74	4.36	4.99	5.61	6.23	6.85	7.48
		3.6	3.41	3.98	4.55	5.12	5.69	6.26	6.83
		4.2	3.16	3.69	4.21	4.74	5.27	5.79	6.32
		4.8	2.96	3.45	3.94	4.43	4.93	5.42	5.91
		5.4	2.79	3.25	3.72	4.18	4.64	5.11	5.57
		6.0	2.64	3.08	3.53	3.97	4.41	4.85	5.29
3	80	2.4	2.75	3.21	3.66	4.12	4.58	5.04	5.50
		3.0	2.46	2.87	3.28	3.69	4.10	4.51	4.92
		3.6	2.24	2.62	2.99	3.37	3.74	4.11	4.49
		4.2	2.08	2.42	2.77	3.12	3.46	3.81	4.15
		4.8	1.94	2.27	2.59	2.91	3.24	3.56	3.89
		5.4	1.83	2.14	2.44	2.75	3.05	3.36	3.66
		6.0	1.74	2.03	2.32	2.61	2.90	3.19	3.48
	130	2.4	3.50	4.09	4.67	5.25	5.84	6.42	7.01
		3.0	3.13	3.66	4.18	4.70	5.22	5.74	6.27
		3.6	2.86	3.34	3.81	4.29	4.77	5.24	5.72
		4.2	2.65	3.09	3.53	3.97	4.41	4.85	5.30
		4.8	2.48	2.89	3.30	3.72	4.13	4.54	4.95
		5.4	2.34	2.72	3.11	3.50	3.89	4.28	4.67
		6.0	2.22	2.58	2.95	3.32	3.69	4.06	4.43

Notes to Table A-11:

⁽¹⁾Spans apply only where the floors serve residential areas as described in Table 4.1.5.3., or the uniformly distributed live load on the floor does not exceed that specified for residential areas as described in Table 4.1.5.3.

⁽²⁾Supported length means half the sum of the joist spans on both sides of the beam.

⁽³⁾Straight interpolation may be used for other supported lengths.

⁽⁴⁾Spans are valid for glued-laminated timber conforming to CAN/CSA-O122-M and CAN/CSA-O177-M.

⁽⁵⁾Spans are clear spans between supports. For total span, add two bearing lengths.

⁽⁶⁾Provide a minimum bearing length of 89 mm. (Alternatively, the bearing length may be designed in accordance with Part 4.)

⁽⁷⁾Top edge of beam assumed to be fully laterally supported by joists.

Table A-12 Maximum Spans for Built-up Ridge Beams and Lintels Supporting the Roof and Ceiling Only – No. 1 or No. 2 Grade Forming Part of Sentence 9.23.4.2.(4)


Column 1	Column 2	Column 3	Column 4	Column 5	Column 6	Column 7
Commercial Designation	Beam or Lintel Size, mm	Maximum Span, m^(1)(2)(3)
		Specified Snow Load, kPa
		1.0	1.5	2.0	2.5	3.0
Douglas Fir – Larch (includes Douglas Fir and Western Larch)	3 – 38 × 184	2.65	2.28	2.03	1.85	1.71
	4 – 38 × 184	3.06	2.64	2.35	2.14	1.97
	5 – 38 × 184	3.43	2.95	2.62	2.39	2.21
	3 – 38 × 235	3.25	2.79	2.49	2.26	2.09
	4 – 38 × 235	3.75	3.22	2.87	2.61	2.41
	5 – 38 × 235	4.19	3.60	3.21	2.92	2.70
	3 – 38 × 286	3.77	3.24	2.88	2.62	2.43
	4 – 38 × 286	4.35	3.74	3.33	3.03	2.80
	5 – 38 × 286	4.86	4.18	3.72	3.39	3.13
Hem – Fir (includes Western Hemlock and Amabilis Fir)	3 – 38 × 184	2.78	2.39	2.13	1.94	1.79
	4 – 38 × 184	3.21	2.76	2.46	2.24	2.07
	5 – 38 × 184	3.59	3.09	2.75	2.50	2.31
	3 – 38 × 235	3.40	2.93	2.61	2.37	2.19
	4 – 38 × 235	3.93	3.38	3.01	2.74	2.53
	5 – 38 × 235	4.39	3.78	3.36	3.06	2.83
	3 – 38 × 286	3.95	3.40	3.02	2.75	2.54
	4 – 38 × 286	4.56	3.92	3.49	3.18	2.94
	5 – 38 × 286	5.10	4.38	3.90	3.55	3.28
Spruce – Pine – Fir (includes Spruce (all species except Coast Sitka Spruce) Jack Pine, Lodgepole Pine, Balsam Fir and Alpine Fir)	3 – 38 × 184	2.88	2.48	2.21	2.01	1.86
	4 – 38 × 184	3.30	2.86	2.55	2.32	2.14
	5 – 38 × 184	3.55	3.10	2.82	2.59	2.40
	3 – 38 × 235	3.53	3.03	2.70	2.46	2.27
	4 – 38 × 235	4.07	3.50	3.12	2.84	2.62
	5 – 38 × 235	4.54	3.91	3.49	3.17	2.93
	3 – 38 × 286	4.09	3.52	3.13	2.85	2.63
	4 – 38 × 286	4.72	4.06	3.62	3.29	3.04
	5 – 38 × 286	5.28	4.54	4.04	3.68	3.40

Notes to Table A-12:

⁽¹⁾Beam and lintel spans are calculated based on a maximum supported length of 4.9 m. Spans may be increased by 5% for supported lengths of not more than 4.3 m, by 10% for supported lengths of not more than 3.7 m, and by 25% for supported lengths of not more than 2.4 m.

⁽²⁾For ridge beams, supported length means half the sum of the rafter, joist or truss spans on both sides of the beam. For lintels, supported length means half the sum of truss, roof joist or rafter spans supported by the lintel plus the length of the overhang beyond the lintel.

⁽³⁾Provide a minimum bearing length of 76 mm.

9.23.4.2.

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