Content page

From [Institution name]

Product Engineering Properties^{Footnote (1)}
Joist Depth (mm)	Joist Series	EI^{Footnote (2)} (×10⁶ kN·mm²)	M_r^{Footnote (3)} (N·m)	V_r^{Footnote (4)} (N)	K^{Footnote (5)} (×10³ kN)	Factored Uniform Vertical Load Resistance^{Footnote (6)} (kN/m)
235	NI-20	396	5 660	7 580	21.40	48.7
	NI-40x	568	6 335	8 210	21.40	48.7
	NI-60	623	8 300	8 210	21.40	48.7
	NI-80	872	11 760	8 210	21.40	48.7
241	NI-20	416	5 840	7 860	21.97	48.7
	NI-40	554	6 165	8 430	21.97	48.7
	NI-40x	626	6 540	8 430	21.97	48.7
	NI-60	663	8 590	8 430	21.97	48.7
	NI-70	872	11 545	8 430	21.97	48.7
	NI-80	930	12 145	8 430	21.97	48.7
286	NI-20	637	7 115	9 410	26.02	48.7
	NI-40x	898	7 970	9 900	26.02	48.7
	NI-60	996	10 440	9 900	26.02	48.7
	NI-80	1 389	14 795	9 900	26.02	48.7
302	NI-20	726	7 565	9 970	27.49	48.7
	NI-40	947	7 995	10 390	27.49	48.7
	NI-40x	1 065	8 480	10 390	27.49	48.7
	NI-60	1 136	11 130	10 390	27.49	48.7
	NI-70	1 478	14 960	10 390	27.49	48.7
	NI-80	1 570	15 740	10 390	27.49	48.7
	NI-90	1 725	19 800	13 520	27.49	48.7
	NI-90x	1 765	21 345	14 430	27.49	48.7
356	NI-40	1 383	9 630	12 150	32.38	48.7
	NI-40x	1 550	10 215	12 150	32.38	48.7
	NI-60	1 676	13 405	12 150	32.38	48.7
	NI-70	2 149	18 015	12 150	32.38	48.7
	NI-80	2 302	18 955	12 150	32.38	48.7
	NI-90	2 517	23 835	14 920	32.38	48.7
	NI-90x	2 612	25 740	15 520	32.38	48.7
406	NI-40	1 885	11 160	13 830	37.01	48.7
	NI-40x	2 106	11 840	13 830	37.01	48.7
	NI-60	2 293	15 550	13 830	37.01	48.7
	NI-70	2 913	20 895	13 830	37.01	48.7
	NI-80	3 134	21 975	13 830	37.01	48.7
	NI-90	3 406	27 645	16 360	37.01	48.7
	NI-90x	3 573	29 540	16 360	37.01	48.7
457	NI-60	2 924	17 590	14 040	41.64	45.0
457	NI-80x	4 015	24 780	16 570	41.64	31.0
508	NI-80x	5 082	27 770	17 200	46.26	31.0
559	NI-80x	6 288	30 770	17 760	50.89	31.0
610	NI-80x	7 634	33 770	18 260	55.51	31.0

Notes:

Footnote 1

The tabulated values are for the standard term of load duration (K_D = 1.0). All values, except for EI and K, shall be permitted to be adjusted for other load durations as permitted by the NBC.

Return to footnote 1 referrer

Footnote 2

Bending stiffness (EI) of the I-joists

Return to footnote 2 referrer

Footnote 3

Factored moment resistance (M_r) of the I-joists, which cannot be increased by any Code-allowed system effect factor

Return to footnote 3 referrer

Footnote 4

Factored shear resistance (V_r) of the I-joists

Return to footnote 4 referrer

Footnote 5

Coefficient of shear deflection (K). For calculating uniform load centre-span deflection of the I-joist in a simple-span application, use the following equation:

where w = load (kN/mm), L = span (mm), EI and K are taken from Table 4.1.1

$deflection = \frac{5 w L}{384 E I} ⊥ \frac{w L_{2}}{K}$

Return to footnote 5 referrer

Footnote 6

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

Return to footnote 6 referrer

Product Factored Reaction Resistances^{Footnote (1)} ^{Footnote (2)} ^{Footnote (3)} ^{Footnote (4)}
Joist Depth (mm)	Joist Series	Intermediate Reaction (N)				End Reaction (N)
		89-mm Brg. Length		140-mm Brg. Length		45-mm Brg. Length		102-mm Brg. Length
		With Brg. Stiffeners		With Brg. Stiffeners		With Brg. Stiffeners		With Brg. Stiffeners
		No	Yes	No	Yes	No	Yes	No	Yes
235	NI-20	16 500	16 570	17 620	17 620	7 130	7 130	7 580	7 580
	NI-40x	16 500	16 570	17 800	17 900	7 970	7 970	8 210	8 210
	NI-60	16 500	16 670	17 830	17 900	7 970	7 970	8 210	8 210
	NI-80	16 500	18 040	18 110	18 110	8 210	8 210	8 210	8 210
241	NI-20	16 920	17 030	18 080	18 080	7 270	7 270	7 860	7 860
	NI-40	16 920	17 030	18 460	18 570	8 250	8 420	8 420	8 420
	NI-40x	16 920	17 030	18 460	18 570	8 250	8 420	8 420	8 420
	NI-60	16 960	17 130	18 500	18 710	8 250	8 420	8 420	8 420
	NI-70	16 960	18 750	18 850	18 850	8 420	8 420	8 420	8 420
	NI-80	16 960	18 750	18 850	18 850	8 420	8 420	8 420	8 420
286	NI-20	19 970	20 150	21 380	21 380	8 350	8 350	9 410	9 410
	NI-40x	19 970	20 150	23 170	23 380	8 780	9 900	9 900	9 900
	NI-60	20 010	20 400	23 240	23 700	8 780	9 900	9 900	9 900
	NI-80	20 010	22 150	23 940	23 940	9 340	9 900	9 900	9 900
302	NI-20	21 060	21 270	22 570	22 570	8 740	8 740	9 970	9 970
	NI-40	21 060	21 270	24 850	25 100	8 950	10 390	10 390	10 390
	NI-40x	21 060	21 270	24 850	25 100	8 950	10 390	10 390	10 390
	NI-60	21 100	21 550	24 920	25 450	8 950	10 390	10 390	10 390
	NI-70	21 100	23 380	25 770	25 770	9 480	10 390	10 390	10 390
	NI-80	21 100	23 380	25 770	25 770	9 480	10 390	10 390	10 390
	NI-90	23 550	23 550	25 770	25 770	9 830	10 390	13 230	13 520
	NI-90x	29 280	29 280	29 280	29 280	12 390	14 430	13 230	14 430
356	NI-40	21 980	22 190	24 780	25 030	9 300	11 870	10 880	12 150
	NI-40x	21 980	22 190	24 780	25 030	9 300	11 870	10 880	12 150
	NI-60	22 050	22 890	24 850	26 640	9 440	11 870	10 880	12 150
	NI-70	23 380	25 560	26 820	28 610	10 220	11 870	10 880	12 150
	NI-80	23 380	25 560	26 820	28 610	10 220	11 870	10 880	12 150
	NI-90	23 550	25 560	26 820	28 610	10 220	11 870	13 230	14 920
	NI-90x	29 280	29 280	29 280	29 280	12 640	15 520	13 230	15 520
406	NI-40	22 850	23 060	24 710	24 960	9 620	13 160	10 880	13 830
	NI-40x	22 850	23 060	24 710	24 960	9 620	13 160	10 880	13 830
	NI-60	22 920	24 150	24 780	27 770	9 900	13 160	10 880	13 830
	NI-70	25 560	27 590	27 800	31 280	10 880	13 160	10 880	13 830
	NI-80	25 560	27 590	27 800	31 280	10 880	13 160	10 880	13 830
	NI-90	25 560	27 590	27 800	31 280	10 880	13 160	13 230	16 360
	NI-90x	29 280	29 280	29 280	29 280	12 850	16 320	13 230	16 360
457	NI-60	19 660	25 420	22 890	28 890	10 360	14 040	12 990	14 040
457	NI-80x	21 870	26 820	23 030	31 030	9 130	13 340	12 990	16 570
508	NI-80x	22 400	28 930	23 940	32 120	9 270	14 360	13 340	17 200
559	NI-80x	22 920	31 070	24 820	33 210	9 410	15 410	13 690	17 760
610	NI-80x	23 450	33 170	25 730	34 300	9 550	16 430	14 040	18 250

Notes:

Footnote 1

The tabulated end and intermediate reaction values must not be greater than the bearing capacity of the flanges based on the spec- ified compressive strength perpendicular to grain of 5.3 MPa when determined in accordance with CAN/CSA-O86. Consult with the manufacturer for the factored compressive strength perpendicular to the grain of the flange for bearing design.

Return to footnote 1 referrer

Footnote 2

The tabulated values are for the standard term of load duration (K_D = 1.0) and are permitted to be adjusted for other load durations as permitted by the NBC.

Return to footnote 2 referrer

Footnote 3

Factored reaction resistance is permitted to be increased over that tabulated for the minimum bearing length by linear interpolation of the reaction resistance between the minimum and maximum bearing lengths. Extrapolation beyond the minimum and maximum bearing lengths is beyond the scope of this Table.

Return to footnote 3 referrer

Footnote 4

The manufacturer must be consulted for the design of web stiffeners, where web stiffeners are required.

Return to footnote 4 referrer

Language selection

Search

Content page