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Joist Flange Sizes and Grades
IB I-Joist	Depth (mm)	Grade	Flange Size (mm)	Web Thickness^{Footnote (1)} (mm)
IB 400	235-406	Proprietary^{Footnote (2)} S-P-F No. 2 and better or enhanced^{Footnote (3)} MSR 1650f-1.5E	38 x 63.5	9.5
IB 600	235-508	Enhanced^{Footnote (3)} MSR 2100f-1.8E	38 x 63.5	9.5
IB 800	235-508	Enhanced^{Footnote (3)} MSR 2100f-1.8E	38 x 89	9.5
IB 900	302-610	Enhanced^{Footnote (3)} MSR 2550f-2.1E	38 x 89	11.1

Engineering Properties^{Footnote (1)} (Limit States Design^{Footnote (2)})
Series	Joist Depth (mm)	Factored Moment Resistance^{Footnote (3)} M_r (N·m)	Factored Shear Resistance^{Footnote (4)} Vr		EI (x10⁶) (kN·mm²)	Shear Deflection ‘K’ Factor (x10⁶) (N)	Factored Vertical Load Resistance^{Footnote (5)} (kN/m)
Series	Joist Depth (mm)	Factored Moment Resistance^{Footnote (3)} M_r (N·m)	No Stiffeners	With Stiffeners	EI (x10⁶) (kN·mm²)	Shear Deflection ‘K’ Factor (x10⁶) (N)	Factored Vertical Load Resistance^{Footnote (5)} (kN/m)
IB 400	235	6 122	8 109	8 109	531	21.40	48.7
	241	6 314	8 320	8 320	568	21.97	48.7
	286	7 689	9 864	9 864	849	26.02	48.7
	302	8 185	10 391	10 391	964	27.49	48.7
	356	9 854	10 882	12 286	1 418	32.38	48.7
	406	11 421	10 882	14 042	1 931	37.01	48.7
IB 600	235	8 433	8 109	9 478	631	21.40	48.7
	241	8 704	8 320	9 619	674	21.97	48.7
	286	10 598	9 864	10 637	1 022	26.02	48.7
	302	11 274	10 391	11 023	1 145	27.49	48.7
	356	13 574	10 882	12 286	1 679	32.38	48.7
	406	15 739	10 882	14 042	2 293	37.01	48.7
	457	17 802	10 882	15 797	3 002	41.63	42.6
	508	19 696	10 882	17 552	3 742	46.26	36.5
IB 800	235	11 940	8 109	9 759	881	21.40	48.7
	241	12 323	8 320	9 864	936	21.97	48.7
	286	15 006	9 864	10 812	1 415	26.02	48.7
	302	15 965	10 391	11 128	1 584	27.49	48.7
	356	19 234	10 882	12 286	2 316	32.38	48.7
	406	22 301	10 882	14 042	3 139	37.01	48.7
	457	25 108	11 233	16 148	4 147	41.63	44.1
	508	27 915	11 584	18 254	5 163	46.26	39.6
IB 900	302	19 899	13 234	13 515	1 733	27.49	48.7
	356	23 969	13 234	14 919	2 537	32.38	48.7
	406	28 490	13 234	16 358	3 441	37.01	48.7
	457	32 211	13 234	17 622	4 491	51.24	44.1
	508	35 650	13 234	18 921	5 693	56.93	39.6
	559	39 055	13 234	20 185	7 051	62.63	30.4
	610	42 414	13 234	21 484	8 566	68.32	30.4

Notes:

Footnote 1

Additional engineering data and load/span tables are available from the manufacturer.

Return to footnote 1 referrer

Footnote 2

Design values were developed in accordance with CAN/CSA-O86 for standard term load duration (Kd = 1). All values, except EI and K, are permitted to be adjusted for other load durations as permitted by CAN/CSA-O86.

Return to footnote 2 referrer

Footnote 3

Factored moment resistance (Mr) shall not be increased by any Code-allowed system factor.

Return to footnote 3 referrer

Footnote 4

Factored shear resistance (Vr) of the I-joist with a minimum end bearing of 102 mm. Stiffeners must be designed as per specifications.

Return to footnote 4 referrer

Footnote 5

Factored vertical uniform load resistance of the I-joist when used as blocking (i.e., squash blocks).

Return to footnote 5 referrer

Additional Engineering Properties (Limit States Design)^{Footnote (1)}
Series	Depth (mm)	Factored End Reactions^{Footnote (2)} (N)
		38-mm-Bearing		44-mm-Bearing		70-mm-Bearing		89-mm-Bearing
		No Stiffeners	With Stiffeners^{Footnote (3)}	No Stiffeners	With Stiffeners^{Footnote (3)}	No Stiffeners	With Stiffeners^{Footnote (3)}	No Stiffeners	With Stiffeners^{Footnote (3)}
IB 400	235	7 793	8 109	7 828	8 109	8 109	8 109	8 109	8 109
	241	7 863	8 320	7 934	8 320	8 320	8 320	8 320	8 320
	286	8 249	9 513	8 460	9 548	9 408	9 864	9 864	9 864
	302	8 425	9 970	8 636	10 040	9 619	10 391	10 285	10 391
	356	8 846	11 444	9 092	11 549	10 215	12 286	10 882	12 286
	406	9 303	12 813	9 513	12 953	10 215	14 042	10 882	14 042
IB 600	235	7 793	8 109	7 934	9 478	8 109	9 478	8 109	9 478
	241	7 863	8 320	8 004	9 619	8 320	9 619	8 320	9 619
	286	8 249	9 513	8 530	10 637	9 408	10 637	9 864	10 637
	302	8 425	9 970	8 706	11 023	9 619	11 023	10 285	11 023
	356	8 846	11 444	9 373	12 286	10 250	12 286	10 882	12 286
	406	9 303	12 813	9 970	13 515	10 496	13 831	10 882	14 042
	457	n/a	n/a	10 566	14 709	10 742	15 340	10 882	15 797
	508	n/a	n/a	10 882	15 867	10 882	16 815	10 882	17 552
IB 800	235	7 793	8 109	7 934	9 689	8 109	9 478	8 109	9 689
	241	7 863	8 320	8 004	9 864	8 320	9 619	8 320	9 684
	286	8 249	9 513	8 530	10 812	9 408	10 637	9 864	10 812
	302	8 425	9 970	9 022	11 128	9 619	11 023	10 285	11 128
	356	8 846	11 444	9 373	12 286	10 250	12 286	10 882	12 286
	406	9 303	12 813	9 970	14 042	10 496	13 831	10 882	14 042
	457	n/a	n/a	10 566	15 937	10 742	15 340	10 882	16 148
	508	n/a	n/a	10 882	17 271	10 882	16 815	10 882	18 254
IB 900	302	8 425	9 970	9 829	11 128	11 444	12 006	12 673	12 673
	356	8 846	11 444	9 829	12 286	11 444	13 129	12 673	13 761
	406	9 303	12 813	9 970	14 042	11 514	15 376	12 673	16 358
	457	n/a	n/a	10 566	15 937	11 233	16 885	11 760	17 622
	508	n/a	n/a	10 882	17 341	11 374	18 184	11 760	18 816
	559	n/a	n/a	10 321	18 219	11 128	19 132	11 760	19 799
	610	n/a	n/a	10 321	20 220	11 128	20 536	11 760	20 782

Additional Engineering Properties (Limit States Design)^{Footnote (1)}
Series	Depth (mm)	Factored Interior Reactions^{Footnote (2)} (N)
		89-mm-Bearing		140-mm-Bearing
		No Stiffeners	With Stiffeners^{Footnote (3)}	No Stiffeners	With Stiffeners^{Footnote (3)}
IB 400	235	15 165	16 218	16 218	16 219
	241	15 165	16 639	16 639	16 639
	286	17 552	19 623	19 728	19 728
	302	17 552	19 623	19 728	20 782
	356	17 552	19 623	21 765	24 257
	406	17 552	19 623	21 765	25 626
IB 600	235	15 165	18 956	16 218	18 965
	241	15 165	19 237	16 639	19 237
	286	17 552	21 273	19 728	21 273
	302	17 552	21 589	19 728	22 045
	356	17 552	22 572	21 765	24 257
	406	17 552	23 520	21 765	25 626
	457	17 552	24 046	21 765	26 223
	508	17 552	24 222	21 765	26 820
IB 800	235	16 218	18 956	16 218	18 956
	241	17 341	19 237	17 341	19 237
	286	19 728	21 273	19 728	21 273
	302	19 728	22 045	19 728	22 045
	356	21 203	24 573	21 203	24 573
	406	21 765	28 083	21 765	28 083
	457	21 765	29 663	21 765	29 663
	508	21 765	30 541	21 765	30 541
IB 900	302	23 555	23 555	23 555	23 555
	356	23 555	24 783	23 555	25 696
	406	23 555	27 522	23 555	28 715
	457	23 555	29 979	23 555	32 577
	508	23 555	32 296	23 555	35 104
	559	23 555	34 753	23 555	35 631
	610	23 555	36 157	23 555	36 157

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