CodeChronicle

OBC 2006 Division B

9.23.10.1.

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

OBC 1997 · continues from 9.23.10.1. — Pro

Base · O. Reg. 350/06 · ext← current

Original — base regulation

O. Reg. 137/07, cl. 66 · ext v1 →

In force 2007-04-02

Next: O. Reg. 137/07, cl. 66 · ext (not in force until 2007-04-02) v1 →

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 appendix tables for Article 9.23.10.1. (Table A-30 through Table A-33, Maximum Spans for Roof Joists and Rafters), the note markers '(1)' to '(4)' are superscripts each followed by a space and the headnotes are in plain weight, as filed in O. Reg. 350/06; the e-Laws consolidation removes the space after each marker, sets the headnotes in bold, and renders the markers of Tables A-30 to A-32 as plain text (those of Table A-33 remain superscript). The Table A-30 column heading also reads 'DesignSnow' run together as filed (a missing space), which this map reproduces; the e-Laws consolidation supplies the space ('Design Snow'). The table content is otherwise identical and none of these changes was enacted by an amending regulation.

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)

Column 1

Column 2

Column 3

Column 4

Column 5

Column 6

Column 7

Column 8

Stud Size and Spacing

Wind Pressure, kPa

q30

0.4

0.5

0.55

q10

0.3

0.4

0.46

Specified Roof DesignSnow Load, kPa

Stud 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

1.0

3.8

A

A

A

A

A

A

4.2

A

A

B

B

B

B

4.6

B

B

C

C

C

C

5.0

C

C

C

C

D

D

5.3

C

C

D

D

D

D

5.6

C

C

D

D

1.5

3.8

A

A

A

A

A

A

4.2

A

A

B

B

B

B

4.6

B

B

C

C

C

C

5.0

C

C

C

C

D

D

5.3

C

C

D

D

D

D

5.6

C

C

D

D

2.0

3.8

A

A

A

A

A

A

4.2

A

A

B

B

B

B

4.6

B

B

C

C

C

C

5.0

C

C

C

C

D

D

5.3

C

C

D

D

D

D

5.6

C

C

D

D

2.5

3.8

A

A

A

A

A

A

4.2

A

A

B

B

B

B

4.6

B

B

C

C

C

C

5.0

C

C

C

C

D

D

5.3

C

C

D

D

D

D

5.6

C

C

D

D

3.0

3.8

A

A

A

A

A

A

4.2

A

A

B

B

B

B

4.6

B

B

C

C

C

C

5.0

C

C

C

C

D

D

5.3

C

C

D

D

D

D

5.6

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 centre

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

Notes to Table A‑30:

(1) A roof dead load of 0.62 kPa has been assumed.

(2) It is assumed that the double top plate is rigid enough to distribute the roof load equally to the studs regardless of spacing.

(3) Solid bridging shall be provided at 1 200 mm on centre.

(4) The studs shall have a minimum of 9.5 mm plywood, waferboard or OSB sheathing on the exterior face and 12.5 mm gypsum board on the interior face.

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)

Column 1

Column 2

Column 3

Column 4

Column 5

Column 6

Column 7

Column 8

Stud Size and Spacing

Wind Pressure, kPa

q30

0.4

0.5

0.55

q10

0.3

0.4

0.46

Specified Roof Design Snow Load, kPa

Stud 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

1.0

3.8

A

A

A

A

A

A

4.2

A

A

A

A

A

A

4.6

A

A

A

A

A

A

5.0

A

A

A

A

B

B

5.3

A

A

B

B

B

B

5.6

A

A

B

B

C

C

1.5

3.8

A

A

A

A

A

A

4.2

A

A

A

A

A

A

4.6

A

A

A

A

A

A

5.0

A

A

A

A

B

B

5.3

A

A

B

B

B

B

5.6

A

A

B

B

C

C

2.0

3.8

A

A

A

A

A

A

4.2

A

A

A

A

A

A

4.6

A

A

A

A

A

A

5.0

A

A

A

A

B

B

5.3

A

A

B

B

B

B

5.6

A

B

B

B

C

C

2.5

3.8

A

A

A

A

A

A

4.2

A

A

A

A

A

A

4.6

A

A

A

A

A

A

5.0

A

A

A

A

B

B

5.3

A

B

B

B

B

B

5.6

A

B

B

B

C

C

3.0

3.8

A

A

A

A

A

A

4.2

A

A

A

A

A

A

4.6

A

A

A

A

A

A

5.0

A

A

A

B

B

B

5.3

A

B

B

B

B

B

5.6

A

B

B

C

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 centre

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

Notes to Table A-31:

(1) A roof dead load of 0.62 kPa has been assumed.

(2) It is assumed that the double top plate is rigid enough to distribute the roof load equally to the studs regardless of spacing.

(3) Solid bridging shall be provided at 1 200 mm on centre.

(4) The studs shall have a minimum of 9.5 mm plywood, waferboard or OSB sheathing on the exterior face and 12.5 mm gypsum board on the interior face.

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)

Column 1

Column 2

Column 3

Column 4

Column 5

Column 6

Column 7

Column 8

Stud Size and Spacing

Wind Pressure, kPa

q30

0.4

0.5

0.55

q10

0.3

0.4

0.46

Specified Roof Design Snow Load, kPa

Stud 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

1.0

3.8

A

A

B

B

B

B

4.2

B

B

C

C

C

C

4.6

C

C

C

C

D

D

5.0

C

C

D

D

5.3

D

D

5.6

1.5

3.8

A

A

B

B

B

B

4.2

B

B

C

C

C

C

4.6

C

C

C

C

D

D

5.0

C

C

D

D

5.3

D

D

5.6

2.0

3.8

A

A

B

B

B

B

4.2

B

B

C

C

C

C

4.6

C

C

C

C

D

D

5.0

C

C

D

D

5.3

D

D

5.6

2.5

3.8

A

A

B

B

B

B

4.2

B

B

C

C

C

C

4.6

C

C

C

C

D

D

5.0

C

C

D

D

5.3

D

D

5.6

3.0

3.8

A

A

B

B

B

B

4.2

B

B

C

C

C

C

4.6

C

C

C

C

D

D

5.0

C

C

D

D

5.3

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 0.62 kPa has been assumed.

(2) It is assumed that the double top plate is rigid enough to distribute the roof load equally to the studs regardless of spacing.

(3) Solid bridging shall be provided at 1 200 mm on centre.

(4) The studs shall have a minimum of 9.5 mm plywood, waferboard or OSB sheathing on the exterior face and 12.5 mm gypsum board on the interior side.

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

Column 1

Column 2

Column 3

Column 4

Column 5

Column 6

Column 7

Column 8

Stud Size and Spacing

Wind Pressure, kPa

q30

0.4

0.5

0.55

q10

0.3

0.4

0.46

Specified Roof Design Snow Load, kPa

Stud 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

1.0

3.8

A

A

A

A

A

A

4.2

A

A

A

A

A

A

4.6

A

A

A

A

B

B

5.0

A

A

B

B

C

C

5.3

B

B

C

C

C

C

5.6

C

C

C

C

D

D

1.5

3.8

A

A

A

A

A

A

4.2

A

A

A

A

A

A

4.6

A

A

A

A

B

B

5.0

A

B

B

B

C

C

5.3

B

B

C

C

C

C

5.6

C

C

C

C

D

D

2.0

3.8

A

A

A

A

A

A

4.2

A

A

A

A

A

A

4.6

A

A

A

B

B

B

5.0

A

B

B

B

C

C

5.3

B

B

C

C

C

C

5.6

C

C

C

C

D

D

2.5

3.8

A

A

A

A

A

A

4.2

A

A

A

A

A

B

4.6

A

B

A

B

B

B

5.0

A

B

B

C

C

C

5.3

B

C

C

C

C

C

5.6

C

C

C

C

D

D

3.0

3.8

A

A

A

A

A

A

4.2

A

A

A

B

A

B

4.6

A

B

A

B

B

B

5.0

A

C

B

C

C

C

5.3

B

C

C

C

C

C

5.6

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 0.62 kPa has been assumed.

(2) It is assumed that the double top plate is rigid enough to distribute the roof load equally to the studs regardless of spacing.

(3)Solid bridging shall be provided at 1.2 m on centre.

(4)The studs shall have a minimum of 9.5 mm plywood, waferboard or OSB sheathing on the exterior face and 12.5 mm gypsum board on the interior face.