CodeChronicle

OBC 2006 Division B

9.23.10.1.

Version 1 — in force 2 April 2007

In force · amended
Verified · covered Verified against the 2007-04-02–2007-06-30 consolidation, whose range covers the query date. How to read this

Provenance

OBC 1997 · continues from 9.23.10.1. — Pro

Base · O. Reg. 350/06 · ext v0 →

O. Reg. 137/07, cl. 66 · ext ← current

In force 2007-04-02

OBC 2012 · continues as 9.23.10.1. — Pro

9.23.10.1. — Stud Size and Spacing

(1) Except as provided in Sentence (2), the size and spacing of studs shall conform to Table 9.23.10.1.

(2) Studs for walls not listed in Table 9.23.10.1. and supporting roof loads shall conform to Table A-30 to A-33, provided,

(a) the studs are clad with not less than 9.5 mm thick plywood, OSB or waferboard sheathing on the exterior face, and not less than 12.5 mm gypsum board on the interior face,

(b) solid bridging is provided at not more than 1 200 mm on centre,

(c) the studs are fastened to the top and bottom plates with no fewer than three 82 mm toe-nails,

(d) the double top plates are fastened together with not less than 76 mm nails spaced not more than 200 mm on centre,

(e) roof framing members spaced not more than 600 mm are fastened to the top plates with no fewer than four 82 mm toe-nails, and

(f) the bottom plate is fastened to the floor joists, blocking or rim joist with not less than 82 mm nails spaced not more than 200 mm on centre.

Editor's note

In the notes to Table-9.23.10.1., the footnote reference numbers are presented inline with a separating space; the e-Laws consolidation renders them as superscript abutting the text. The footnote text is identical.

Text · e-Laws consolidated snapshot

Table 9.23.10.1. Size and Spacing of Studs Forming Part of Sentence 9.23.10.1.(1)

Column 1

Column 2

Column 3

Column 4

Column 5

Type of Wall

Supported Loads (including dead loads)

Minimum Stud Size, mm

Maximum Stud Spacing, mm

Maximum Unsupported Height, m

Interior

No load

38 × 38

400

2.4

38 × 89 flat(1)

400

3.6

Attic not accessible by a stairway

38 × 64

600

3.0

38 × 64 flat(1)

400

2.4

38 × 89

600

3.6

38 × 89 flat(1)

400

2.4

Attic accessible by a stairway plus one floor Roof load plus one floor Attic not accessible by stairway plus 2 floors

38 × 89

400

3.6

Roof load,

Attic accessible by a stairway

38 × 64

400

2.4

Attic not accessible by a stairway plus one floor

38 × 89

600

3.6

Attic accessible by a stairway plus 2 floors Roof load plus 2 floors

38 × 89

300

3.6

64 × 89

400

3.6

38 × 140

400

4.2

Attic accessible by a stairway plus 3 floors Roof load plus 3 floors

38 × 140

300

4.2

Exterior

Roof with or without attic storage

38 × 64

400

2.4

38 × 89

600

3.0

Roof with or without attic storage plus one floor

38 × 89

400

3.0

38 × 140

600

3.0

Roof with or without attic storage plus 2 floors

38 × 89

300

3.0

64 × 89

400

3.0

38 × 140

400

3.6

Roof with or without attic storage plus 3 floors

38 × 140

300

1.8

Notes to Table 9.23.10.1.:

(1)See Article 9.23.10.3.

Table A-30 Sizes for Spruce-Pine-Fir No. 2 Grade Exterior Wall Studs with Brick Veneer Forming Part of Sentence 9.23.10.1.(2)

Row

Column 1

2

3

4

5

6

7

8

9

10

Stud Size and Spacing

Hourly Wind Pressure (1/50), kPa

0.40

0.45

0.50

0.60

Specified Roof Snow Load, kPa

Stud
Length, m

Supported Roof Length, m

Supported Roof Length, m

Supported Roof Length, m

Supported Roof Length, m

3.0

6.0

3.0

6.0

3.0

6.0

3.0

6.0

1.

1.0

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

B

B

B

B

4.6

B

B

B

B

C

C

C

C

5.0

C

C

C

C

C

C

D

D

5.3

C

C

C

C

D

D

D

D

5.6

C

C

D

D

D

D

2.

1.5

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

B

B

B

B

4.6

B

B

B

B

C

C

C

C

5.0

C

C

C

C

C

C

D

D

5.3

C

C

C

C

D

D

D

D

5.6

C

C

D

D

D

D

3.

2.0

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

B

B

B

B

4.6

B

B

B

B

C

C

C

C

5.0

C

C

C

C

C

C

D

D

5.3

C

C

C

C

D

D

D

D

5.6

C

C

D

D

D

D

4.

2.5

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

B

B

B

B

4.6

B

B

B

B

C

C

C

C

5.0

C

C

C

C

C

C

D

D

5.3

C

C

C

C

D

D

D

D

5.6

C

C

D

D

D

D

5.

3.0

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

B

B

B

B

4.6

B

B

B

B

C

C

C

C

5.0

C

C

C

C

C

C

D

D

5.3

C

C

C

C

D

D

D

D

5.6

C

C

D

D

D

D

Legend - Stud Size and Spacing

A = 38 × 140 mm at 400 mm on centre C = two 38 × 140 mm studs at 400 mm on centre

B = 38 × 140 mm at 300 mm on centre D = two 38 × 140 mm studs at 300 mm on centre

Notes to Table A-30:

(1) A roof dead load of 0.5 kPa has been assumed. The Table does not apply where the stud supports additional loads from heavy roofing materials such as concrete tiles or clay roofing tiles.

(2) Wall construction shall conform to the requirements of Sentence 9.23.10.1.(2).

Table A-31 Sizes for Spruce-Pine-Fir No. 2 Grade Exterior Wall Studs with Siding Forming Part of Sentence 9.23.10.1.(2)

Row

Column 1

2

3

4

5

6

7

8

9

10

Stud Size and Spacing

Hourly Wind Pressure (1/50), kPa

0.40

0.45

0.50

0.60

Specified Roof Snow Load, kPa

Stud
Length, m

Supported Roof Length, m

Supported Roof Length, m

Supported Roof Length, m

Supported Roof Length, m

3.0

6.0

3.0

6.0

3.0

6.0

3.0

6.0

1.

1.0

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

A

A

A

A

4.6

A

A

A

A

A

A

A

A

5.0

A

A

A

A

A

A

B

B

5.3

A

A

A

A

B

B

B

B

5.6

A

A

B

B

B

B

C

C

2.

1.5

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

A

A

A

A

4.6

A

A

A

A

A

A

A

A

5.0

A

A

A

A

A

A

B

B

5.3

A

A

A

A

B

B

B

B

5.6

A

A

B

B

B

B

C

C

3.

2.0

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

A

A

A

A

4.6

A

A

A

A

A

A

A

A

5.0

A

A

A

A

A

A

B

B

5.3

A

A

A

A

B

B

B

B

5.6

A

A

B

B

B

B

C

C

4.

2.5

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

A

A

A

A

4.6

A

A

A

A

A

A

A

A

5.0

A

A

A

A

A

A

B

B

5.3

A

A

A

A

B

B

B

B

5.6

A

B

B

B

B

B

C

C

5.

3.0

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

A

A

A

A

4.6

A

A

A

A

A

A

A

A

5.0

A

A

A

A

A

A

B

B

5.3

A

B

A

B

B

B

B

B

5.6

A

B

B

B

B

B

C

C

Legend - Stud Size and Spacing

A = 38 × 140 mm at 400 mm on centre C = two 38 × 140 mm studs at 400 mm on centre

B = 38 × 140 mm at 300 mm on centre D = two 38 × 140 mm studs at 300 mm on centre

Notes to Table A-31:

(1) A roof dead load of 0.5 kPa has been assumed. The Table does not apply where the stud supports additional loads from heavy roofing materials such as concrete tiles or clay roofing tiles.

(2) Wall construction shall conform to the requirements of Sentence 9.23.10.1.(2).

Table A-32 Sizes for Northern Species No. 2 Grade Exterior Wall Studs with Brick Veneer Forming Part of Sentence 9.23.10.1.(2)

Row

Column 1

2

3

4

5

6

7

8

9

10

Stud Size and Spacing

Hourly Wind Pressure (1/50), kPa

0.40

0.45

0.50

0.60

Specified Roof Snow Load, kPa

Stud
Length, m

Supported Roof Length, m

Supported Roof Length, m

Supported Roof Length, m

Supported Roof Length, m

3.0

6.0

3.0

6.0

3.0

6.0

3.0

6.0

1.

1.0

3.8

A

A

A

A

B

B

B

B

4.2

B

B

B

B

C

C

C

C

4.6

C

C

C

C

C

C

D

D

5.0

C

C

D

D

D

D

5.3

D

D

D

D

5.6

2.

1.5

3.8

A

A

A

A

B

B

B

B

4.2

B

B

B

B

C

C

C

C

4.6

C

C

C

C

C

C

D

D

5.0

C

C

D

D

D

D

5.3

D

D

D

D

5.6

3.

2.0

3.8

A

A

A

A

B

B

B

B

4.2

B

B

B

B

C

C

C

C

4.6

C

C

C

C

C

C

D

D

5.0

C

C

D

D

D

D

5.3

D

D

D

D

5.6

4.

2.5

3.8

A

A

A

A

B

B

B

B

4.2

B

B

B

B

C

C

C

C

4.6

C

C

C

C

C

C

D

D

5.0

C

C

D

D

D

D

5.3

D

D

D

D

5.6

5.

3.0

3.8

A

A

A

A

B

B

B

B

4.2

B

B

B

B

C

C

C

C

4.6

C

C

C

C

C

C

D

D

5.0

C

C

D

D

D

D

5.3

D

D

D

D

5.6

Legend - Stud Size and Spacing

A = 38 × 140 mm at 400 mm on centre C = two 38 × 140 mm studs at 400 mm on centre

B = 38 × 140 mm at 300 mm on centre D = two 38 × 140 mm studs at 300 mm on centre

Notes to Table A-32:

(1) A roof dead load of 0.5 kPa has been assumed. The Table does not apply where the stud supports additional loads from heavy roofing materials such as concrete tiles or clay roofing tiles.

(2) Wall construction shall conform to the requirements of Sentence 9.23.10.1.(2).

Table A-33 Sizes for Northern Species No. 2 Grade Exterior Wall Studs with Siding Forming Part of Sentence 9.23.10.1.(2)

Row

Column 1

2

3

4

5

6

7

8

9

10

Stud Size and Spacing

Hourly Wind Pressure (1/50), kPa

0.40

0.45

0.50

0.60

Specified Roof Snow Load, kPa

Stud
Length, m

Supported Roof Length, m

Supported Roof Length, m

Supported Roof Length, m

Supported Roof Length, m

3.0

6.0

3.0

6.0

3.0

6.0

3.0

6.0

1.

1.0

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

A

A

A

A

4.6

A

A

A

A

A

A

B

B

5.0

A

A

B

B

B

B

C

C

5.3

B

B

B

B

C

C

C

C

5.6

C

C

C

C

C

C

D

D

2.

1.5

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

A

A

A

A

4.6

A

A

A

A

A

A

B

B

5.0

A

A

B

B

B

B

C

C

5.3

B

B

B

B

C

C

C

C

5.6

C

C

C

C

C

C

D

D

3.

2.0

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

A

A

A

A

4.6

A

A

A

A

A

A

B

B

5.0

A

A

B

B

B

B

C

C

5.3

B

B

B

B

C

C

C

C

5.6

C

C

C

C

C

C

D

D

4.

2.5

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

A

A

A

A

4.6

A

A

A

A

A

A

B

B

5.0

A

B

B

B

B

B

C

C

5.3

B

B

B

B

C

C

C

C

5.6

C

C

C

C

C

C

D

D

5.

3.0

3.8

A

A

A

A

A

A

A

A

4.2

A

A

A

A

A

A

A

A

4.6

A

B

A

B

A

B

B

B

5.0

A

B

B

B

B

B

C

C

5.3

B

C

B

C

C

C

C

C

5.6

C

C

C

C

C

C

D

D

Legend - Stud Size and Spacing

A = 38 × 140 mm at 400 mm on centre C = two 38 × 140 mm studs at 400 mm on centre

B = 38 × 140 mm at 300 mm on centre D = two 38 × 140 mm studs at 300 mm on centre

Notes to Table A-33:

(1) A roof dead load of 0.5 kPa has been assumed. The Table does not apply where the stud supports additional loads from heavy roofing materials such as concrete tiles or clay roofing tiles.

(2) Wall construction shall conform to the requirements of Sentence 9.23.10.1.(2).