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OBC 2006 › Division B

9.20.17.4.

Version 0 — in force 31 December 2006

In force
Verified · covered Verified against the 2006-12-31–2007-04-01 consolidation, whose range covers the query date. How to read this

Provenance

New in this edition — no OBC 1997 predecessor

Base · O. Reg. 350/06 · ext← current

Original — base regulation

OBC 2012 · continues as 9.20.17.4. — Pro

9.20.17.4. — Lintels over Openings in Loadbearing Flat Insulating Concrete Form Walls

(1) In loadbearing flat insulating concrete form walls, lintels shall be provided over all openings wider than 900 mm.

(2) Lintels described in Sentence (1) shall be constructed in accordance with Tables A-17, A-18 or A-19.

(3) Lintels described in Sentence (1) over openings wider than 1 200 mm shall be reinforced for shear with 10M stirrups at a maximum spacing of half the distance from the bottom reinforcing bar to the top of the lintel.

Editor's note

In the notes to Table-A-17, Table-A-18, Table-A-19, the footnote reference numbers differ only in presentation (superscript/inline rendering and separator spacing) from the e-Laws consolidation. The footnote text is identical.

Text · e-Laws consolidated snapshot

Table A-17 Maximum Allowable Clear Spans for Lintels in Flat Loadbearing Insulating Concrete Form (ICF) Walls(1)(2)(3) (1-10M Bottom Bar) Forming Part of Sentence 9.20.17.4.(1)

Column 1

Column 2

Column 3

Column 4

Column 5

Column 6

Minimum Lintel Thickness, mm

Minimum Lintel Depth, mm

Maximum Clear Span, m

Supporting Light-Frame Roof Only

Supporting ICF Second Storey and Light-Frame Roof

Maximum Ground Snow Load, kN/m2

1.50

3.33

1.50

3.33

140

200

1.41

1.18

1.03

0.93

300

1.78

1.50

1.30

1.18

400

2.08

1.75

1.53

1.38

500

2.33

1.97

1.72

1.56

600

2.55

2.16

1.89

1.71

150

200

1.41

1.18

1.02

0.92

300

1.78

1.50

1.29

1.17

400

2.08

1.75

1.51

1.37

500

2.33

1.97

1.70

1.54

600

2.54

2.15

1.87

1.70

160

200

1.41

1.18

1.01

0.91

300

1.78

1.50

1.28

1.16

400

2.07

1.75

1.50

1.36

500

2.32

1.96

1.68

1.53

600

2.53

2.15

1.85

1.68

190

200

1.41

1.19

0.98

0.89

300

1.78

1.50

1.24

1.13

400

2.06

1.74

1.45

1.32

500

2.30

1.95

1.63

1.49

600

2.51

2.13

1.78

1.63

200

200

1.41

1.19

0.97

0.89

300

1.77

1.49

1.23

1.12

400

2.06

1.74

1.43

1.31

500

2.30

1.95

1.61

1.48

600

2.50

2.13

1.77

1.62

240

200

1.41

1.19

0.94

0.86

300

1.76

1.49

1.18

1.09

400

2.04

1.73

1.38

1.27

500

2.27

1.93

1.55

1.43

600

2.47

2.11

1.70

1.56

Notes to Table A-17:

(1) Deflection criteria is L/240, where “L” is the clear span of the lintel.

(2) Linear interpolation is permitted between ground snow loads and between lintel depths.

(3) 10M stirrups are required at a maximum d/2 spacing for spans greater than 1 200 mm, where “d” is the distance from the top of the lintel to the level of the bottom reinforcing bar in the lintel.

Table A-18 Maximum Allowable Clear Spans for Lintels in Flat Loadbearing Insulating Concrete Form (ICF) Walls(1)(2)(3) (1-15M Bottom Bar) Forming Part of Sentence 9.20.17.4.(2)

Column 1

Column 2

Column 3

Column 4

Column 5

Column 6

Minimum Lintel Thickness, mm

Minimum Lintel Depth, mm

Maximum Clear Span, m

Supporting Light-Frame Roof Only

Supporting ICF Second Storey and Light-Frame Roof

Maximum Ground Snow Load, kN/m2

1.50

3.33

1.50

3.33

140

200

1.63

1.46

1.31

1.23

300

2.43

2.08

1.81

1.64

400

2.90

2.44

2.13

1.93

500

3.26

2.75

2.41

2.18

600

3.58

3.03

2.65

2.40

150

200

1.67

1.49

1.33

1.25

300

2.48

2.08

1.79

1.62

400

2.90

2.44

2.11

1.91

500

3.26

2.75

2.38

2.16

600

3.57

3.02

2.62

2.38

160

200

1.70

1.53

1.35

1.26

300

2.48

2.08

1.78

1.61

400

2.90

2.44

2.09

1.90

500

3.25

2.75

2.36

2.14

600

3.56

3.02

2.59

2.36

190

200

1.80

1.61

1.36

1.24

300

2.48

2.09

1.73

1.58

400

2.89

2.44

2.03

1.85

500

3.23

2.74

2.29

2.09

600

3.53

3.00

2.51

2.30

200

200

1.83

1.64

1.35

1.23

300

2.48

2.09

1.71

1.57

400

2.88

2.44

2.01

1.84

500

3.22

2.74

2.26

2.07

600

3.52

2.99

2.48

2.28

240

200

1.93

1.65

1.30

1.20

300

2.47

2.08

1.66

1.52

400

2.86

2.43

2.94

1.78

500

3.19

2.72

2.18

2.01

600

3.47

2.97

2.39

2.20

Notes to Table A-18:

(1) Deflection criteria is L/240, where “L” is the clear span of the lintel.

(2) Linear interpolation is permitted between ground snow loads and between lintel depths.

(3) 10M stirrups are required at a maximum d/2 spacing for spans greater than 1 200 mm, where “d” is the distance from the top of the lintel to the level of the bottom reinforcing bar in the lintel.

Table A-19 Maximum Allowable Clear Spans for Lintels in Flat Loadbearing Insulating Concrete Form (ICF) Walls(1)(2)(3) (2-15M Bottom Bar) Forming Part of Sentence 9.20.17.4.(2)

Column 1

Column 2

Column 3

Column 4

Column 5

Column 6

Minimum Lintel Thickness, mm

Minimum Lintel Depth, mm

Maximum Clear Span, m

Supporting Light-Frame Roof Only

Supporting ICF Second Storey and Light-Frame Roof

Maximum Ground Snow Load, kN/m2

1.50

3.33

1.50

3.33

140

200

1.63

1.46

1.31

1.23

300

2.43

2.18

1.96

1.84

400

3.22

2.90

2.60

2.42

500

4.00

3.60

3.25

2.70

600

4.71

4.20

3.61

2.97

150

200

1.67

1.49

1.33

1.25

300

2.48

2.23

1.99

1.87

400

3.29

2.96

2.64

2.45

500

4.80

3.68

3.29

2.74

600

4.87

4.20

3.64

3.02

160

200

1.70

1.53

1.35

1.27

300

2.53

2.28

2.02

1.90

400

3.36

3.02

2.68

2.48

500

4.16

3.76

3.27

2.78

600

4.95

4.20

3.61

3.08

190

200

1.80

1.61

1.39

1.32

300

2.67

2.40

2.09

1.97

400

3.53

3.19

2.77

2.56

500

4.38

3.81

3.18

2.90

600

4.92

4.19

3.50

3.21

200

200

1.83

1.64

1.41

1.33

300

2.87

2.44

2.11

2.00

400

3.78

3.24

2.79

2.55

500

4.46

3.81

3.15

2.89

600

4.86

4.18

3.47

3.18

240

200

2.07

1.74

1.46

1.38

300

3.07

2.59

2.18

2.07

400

3.95

3.38

2.70

2.48

500

4.40

3.80

3.04

2.80

600

4.78

4.16

3.34

3.08

Notes to Table A-19:

(1) Deflection criteria is L/240, where “L” is the clear span of the lintel.

(2) Linear interpolation is permitted between ground snow loads and between lintel depths.

(3) 10M stirrups are required at a maximum d/2 spacing for spans greater than 1 200 mm, where “d” is the distance from the top of the lintel to the level of the bottom reinforcing bar in the lintel.