The Ontario Building Code | Lintels or Arches

9.20.5.2. Lintels or Arches

(1) masonry over openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings shall be supported by steel, reinforced concrete lintels or masonry arches designed to support the imposed loads.

(2) Except as provided in Sentences (3) and (6), steel angle lintels supporting masonry above openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings shall conform to Table 9.20.5.2.A.

(3) Steel angle lintels supporting masonry veneer above openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings shall conform to Table 9.20.5.2.B.

(4) Steel lintels described in Sentences (2) and (3) shall,

(a) have even and level bearing and shall have not less than 150 mm length of bearing at end supports, and

(b) bear on masonry, concrete or steel.

(5) Steel angle lintels supporting masonry shall be primed or painted or otherwise protected from corrosion.

(6) Steel beams supporting masonry veneer and wood stud walls above openings="http://thehandyforce.com/windows/" title ="Window installer in Toronto">openings shall conform to Table 9.20.5.2.C.

(7) Steel beams described in Sentence (6) shall be supported at each end by a steel column, and have a minimum 6 mm plate welded to the flange to support the masonry veneer.

Table 9.20.5.2.A.
Loose Steel Lintels for masonry – No. & Size of Angles Required^{(6) (7)}

Forming Part of Sentence 9.20.5.2.(2)

Item	Col. 1	Col. 2	Col. 3	Col. 4	Col. 5	Col. 6	Col. 7	Col. 8	Col. 9	Col. 10	Col. 11
	Clear Span⁽¹⁾⁽³⁾	exterior Angles, mm		wall Thickness, mm	interior Angles, mm
	Clear Span⁽¹⁾⁽³⁾	For brick	For stone		Maximum floor Loads per Metre of Span in Newtons^(2)(4)(5)
		100 mm	100 mm + 50 mm stone facing		Maximum floor Loads per Metre of Span in Newtons^(2)(4)(5)
			100 mm + 50 mm stone facing		None	3 650	7 300	10 950	14 600	18 250	21 900
		No floor Load			None	3 650	7 300	10 950	14 600	18 250	21 900
1.	1.2 m or less	L-89 × 89 × 6.4	L-127 × 89 × 7.9	203	L-89	L-89	L-89	L-102	L-127	L-127	L-127
	1.2 m or less		L-127 × 89 × 7.9		× 89	× 89	× 89	× 89	× 89	× 89	× 89
					× 6.4	× 6.4	× 7.9	× 7.9	× 7.9	× 11	× 13
				305	2Ls-89	2Ls-89	2Ls-89	2Ls-89	2Ls-89	2Ls-102	2Ls-102
					× 89	× 89	× 89	× 89	× 89	× 89	× 89
					× 7.9	× 7.9	× 7.9	× 7.9	× 7.9	× 7.9	× 7.9
2.	1.5 m	L-89 × 89 × 7.9	L-127 × 89 × 7.9	203	L-89	L-89	L-127	L-127	L-127	L-152
			L-127 × 89 × 7.9		× 89	× 89	× 89	× 89	× 89	× 89
					× 7.9	× 7.9	× 7.9	× 11	× 13	× 11
				305	2Ls-89	2Ls-89	2Ls-89	2Ls-127	2Ls-127	2Ls-127	2Ls-127
					× 89	× 89	× 89	× 89	× 89	× 89	× 89
					× 7.9	× 7.9	× 7.9	× 7.9	× 7.9	× 7.9	× 11
3.	1.8 m	L-102 × 89 × 7.9	L-127 × 127 × 7.9	203	L-102	L-127	L-127	L-152
		L-102 × 89 × 7.9	L-127 × 127 × 7.9		× 89	× 89	× 89	× 102
					× 7.9	× 7.9	× 7.9	× 11
				305	2Ls-102	2Ls-102	2Ls-127	2Ls-127	2Ls-127	2Ls-152	2Ls-152
					× 89	× 89	× 89	× 89	× 89	× 102	× 102
					× 7.9	× 7.9	× 7.9	× 7.9	× 11	× 11	× 11
4.	2.1 m	L-102 × 89 × 7.9	L-127 × 127 × 7.9	203	L-102	L-127	L-152
		L-102 × 89 × 7.9	L-127 × 127 × 7.9		× 89	× 89	× 102
					× 7.9	× 11	× 11
				305	2Ls-102	2Ls-127	2Ls-127	2Ls-152	2Ls-152
					× 89	× 89	× 89	× 102	× 102
					× 7.9	× 11	× 11	× 11	× 11
5.	2.4 m	L-127 × 89 × 7.9	L-127 × 127 × 7.9	203	L-127	L-152
		L-127 × 89 × 7.9	L-127 × 127 × 7.9		× 89	× 102
					× 7.9	× 11
				305	2Ls-127	2Ls-127	2Ls-152
					× 89	× 89	× 102
					× 7.9	× 13	× 11
6.	2.7 m	L-127 × 89 × 11	L-127 × 127 × 11	203	L-127
		L-127 × 89 × 11	L-127 × 127 × 11		× 89
					× 11
				305	2Ls-127	2Ls-152
					× 152	× 102
					× 11	× 11
7.	3.0 m	L-152 × 102 × 11	L-127 × 127 × 13	203	L-152
		L-152 × 102 × 11	L-127 × 127 × 13		× 102
					× 11
				305	2Ls-152
					× 102
					× 11

Notes to Table 9.20.5.2.A.:

⁽¹⁾ See Sentence 9.20.5.2.(4).

⁽²⁾ Omit floor load in lintel when distance to bottom of floor construction is greater than width of opening.

⁽³⁾ interior and exterior angles in 200 mm walls and interior angles in 300 mm walls are bolted together when clear span is over 1 800 mm.

⁽⁴⁾ When masonry lighter than brick is used over interior angles floor load may be increased by the difference in weight per square metre times the width of the opening. Not generally available.

⁽⁵⁾ interior angles have been designed for floor load plus brick masonry of height equal to width of opening.

⁽⁶⁾ fs = 138 MPa., Deflection maximum = 1/700 span.

⁽⁷⁾ The figures in the Table indicating wall thickness and angle cross-section are in mm.

Table 9.20.5.2.B.
Maximum Allowable Spans for Steel Lintels supporting Masonry Veneer, m

Forming Part of Sentence 9.20.5.2.(3)

Item	Column 1	Column 2	Column 3	Column 4	Column 5	Column 6
	Minimum Angle Size, mm			Maximum Allowable Spans, m
	Vertical Leg	Horizontal Leg	Thickness	70 mm brick	90 mm brick	100 mm stone
1.	89	76	6.4	2.55	—	—
2.	89	89	6.4	2.59	2.47	2.30
3.	102	89	6.4	2.79	2.66	2.48
4.	127	89	7.9	3.47	3.31	3.08
5.	127	89	11	3.64	3.48	3.24
6.	127	89	13	3.82	3.59	3.33
7.	152	89	11	4.06	3.82	3.54
8.	152	89	13	4.32	4.07	3.77
9.	152	102	13	4.37	4.12	3.82
10.	178	102	11	4.57	4.30	3.99
11.	178	102	13	4.87	4.59	4.25

Table 9.20.5.2.C.
Maximum Allowable Spans for Steel Beams supporting Masonry Veneer, m^{(1), (2)}

Forming Part of Sentence 9.20.5.2.(6)

Item	Column 1 Section	Column 2 70 mm brick	Column 3 90 mm brick	Column 4 100 mm stone
1.	W 150 × 22	4.23	4.09	3.92
2.	W 150 × 30	4.68	4.52	4.32
3.	W 200 × 27	5.26	5.08	4.84
4.	W 200 × 31	5.57	5.37	5.11
5.	W 200 × 36	5.70	5.49	5.23

Notes toTable 9.20.5.2.C.:

⁽¹⁾ These spans assume that the beam supports the veneer, a wood stud wall and a maximum specified roof live load of 2.3 kN/m.

⁽²⁾ Where the steel beam carries floor loads or larger roof loads, refer to Article 9.23.4.3.

9.20.6. Thickness and Height

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