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OBC 2006 › Division B

9.23.10.

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. — Pro

Base · O. Reg. 350/06 · ext← current

Original — base regulation

OBC 2012 · continues as 9.23.10. — Pro

9.23.10. — Wall Studs

Content not available for this version.

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.

9.23.10.2. — Bracing and Lateral Support

(1) Except as provided in Sentence (2), each exterior wall in each storey shall be braced with at least one diagonal brace conforming to Sentence (3).

(2) Bracing is not required where the walls,

(a) have an interior finish conforming to the requirements of Section 9.29., or

(b) where the walls are,

(i) clad with panel-type siding,

(ii) diagonally sheathed with lumber, or

(iii) sheathed with plywood, OSB, waferboard, gypsum or fibreboard sheathing.

(3) Where bracing is required, it shall,

(a) consist of not less than 19 mm by 89 mm wood members,

(b) be applied to the studs at an angle of approximately 45° to the horizontal, and

(c) extend the full height of the wall on each storey.

(4) Bracing described in Sentence (3) shall be nailed to each stud and wall plate by at least two 63 mm nails.

(5) Where loadbearing interior walls are not finished in accordance with Sentence (2), blocking or strapping shall be fastened to the studs at mid-height to prevent sideways buckling.

Text · e-Laws consolidated snapshot

9.23.10.3. — Orientation of Studs

(1) Except as permitted in Sentences (2) and (3), all studs shall be placed at right angles to the wall face.

(2) Studs on the flat are permitted to be used in gable ends of roofs that contain only unfinished space or in non-loadbearing interior walls within the limits described in Article 9.23.10.1.v1

(3) Wall studs that support only a load from an attic not accessible by a stairway are permitted to be placed on the flat within the limits permitted in Article 9.23.10.1.v1 provided,

(a) the studs are clad on at least 1 side with plywood, OSB or waferboard sheathing fastened to the face of the studs with a structural adhesive, and

(b) the portion of the roof supported by the studs does not exceed 2 100 mm in width.

Text · e-Laws consolidated snapshot

9.23.10.4. — Continuity of Studs

(1) Wall studs shall be continuous for the full storey height except at openings and shall not be spliced except by finger-jointing with a structural adhesive.

Text · e-Laws consolidated snapshot

9.23.10.5. — Support for Cladding Materials

(1) Corners and intersections shall be designed to provide adequate support for the vertical edges of interior finishes, sheathing and cladding materials, and in no instance shall exterior corners be framed with less than the equivalent of 2 studs.

(2) Where the vertical edges of interior finishes at wall intersections are supported at vertical intervals by blocking or furring, the vertical distance between such supports shall not exceed the maximum distance between supports specified in Section 9.29.

Text · e-Laws consolidated snapshot

9.23.10.6. — Studs at Sides of Openings

(1) Except as provided in Sentence (2), studs shall be doubled on each side of openings so that the inner studs extend from the lintel to the bottom wall plate and the outer studs extend from the top wall plates to the bottom wall plate.

(2) Single studs are permitted to be used on either side of openings,

(a) in non-loadbearing interior walls not required to have fire-resistance ratings provided the studs extend from the top wall plate to the bottom wall plate, or

(b) in loadbearing or non-loadbearing interior or exterior walls, provided,

(i) the opening is less than and within the required stud spacing, and

(ii) no two such openings of full stud space width are located in adjacent stud spaces.

Text · e-Laws consolidated snapshot

9.23.10.7. — Stud Posts Built into Walls

(1) Except as provided in Sentences (2) and (3), stud posts shall be designed in accordance with Part 4.

(2) The number of studs in a wall directly below a girder truss or roof beam shall conform to Tables A-34 to A-37, provided,

(a) the studs are fastened together to form a post in accordance with Sentence 9.17.4.2.(2),

(b) the wall is not less than 1 200 mm long and sheathed on at least one side with plywood, OSB, waferboard or gypsum sheathing, and

(c) the wall sheathing is fastened to the stud post with at least one row of fasteners conforming to Article 9.23.3.5. and spaced not less than 150 mm on centre.

(3) The width of the stud post shall be not less than the width of the girder or beam that it supports.

Editor's note

This map follows the as-filed text of O. Reg. 350/06 for Article 9.23.10.7. of Division B, which no regulation amends. The notes to its tables (Tables A-34 to A-37) differ from the e-Laws consolidation: the as-filed notes show the note numbers in superscript and the 'Notes to Table ...:' headnotes in plain text, whereas the e-Laws consolidation bolds the headnotes and, at its April 2, 2007 re-render, drops the superscript from the Table A-36 note numbers. The e-Laws consolidation also adds a source-credit line to the notes area of Table A-37 recording the regulations affecting Part 9 ('O. Reg. 350/06, Division B, Part 9', extended on April 2, 2007 to add 'O. Reg. 137/07, ss. 42-66'); this is an e-Laws amendment-history annotation rather than regulation text, and O. Reg. 137/07 does not amend this Article or its tables. In the caption of each of these tables, the as-filed text reads 'Forming Part of Sentence 9.23.10.7 (2)', with a space before the sentence number and no dot after the article number, where the e-Laws consolidation renders it '9.23.10.7.(2)'; this map preserves the as-filed spacing.

Text · e-Laws consolidated snapshot

Table A-34 Minimum Number of 38 × 89 mm Spruce-Pine-Fir Stud Posts in Exterior Stud Walls Supporting Girder Trusses and Roof Beams Forming Part of Sentence 9.23.10.7 (2)

Col. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

Minimum Number of Studs

Stud Height, m

Span of Beam or Girder, m

Specified Roof Design Snow Load, kPa

1.0

1.5

2.0

2.5

3.0

Supported Length, m

Supported Length, m

Supported Length, m

Supported Length, m

Supported Length, m

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

2.4

1

1

2

2

1

2

2

2

1

2

2

3

2

2

3

3

2

2

3

3

3.6

1

2

2

2

2

2

3

3

2

2

3

4

2

3

4

4

2

3

4

5

4.8

2

2

3

3

2

3

3

4

2

3

4

5

3

4

5

3

4

5

6.0

2

2

3

4

2

3

4

5

3

4

5

3

4

3

5

7.2

2

3

4

4

3

4

5

3

4

4

5

4

8.4

2

3

4

5

3

4

5

3

5

4

5

9.6

3

4

5

3

5

4

5

5

10.8

3

4

5

4

5

4

5

12.0

3

4

4

5

3.0

2.4

1

2

2

2

2

2

3

3

2

2

3

4

2

3

4

4

2

3

4

5

3.6

2

2

3

3

2

3

4

4

2

3

4

5

3

4

5

3

4

4.8

2

3

4

4

3

4

5

3

4

4

5

4

6.0

2

3

4

5

3

4

4

5

4

5

7.2

3

4

5

4

5

4

5

8.4

3

4

4

5

9.6

4

5

5

10.8

4

5

12.0

4

Notes to Table A-34:

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

(2) Roof beams require a minimum bearing length of 89 mm.

(3) Girder trusses require a minimum bearing length of 89 mm unless otherwise specified by the truss manufacturer.

Table A-35 Minimum Number of 38 × 140 mm Spruce-Pine-Fir Stud Posts in Exterior Stud Walls Supporting Girder Trusses and Roof Beams Forming Part of Sentence 9.23.10.7 (2)

Col. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

Minimum Number of Studs

Stud Height, m

Span of Beam or

Girder, m

Specified Roof Design Snow Load, kPa

1.0

1.5

2.0

2.5

3.0

Supported Length, m

Supported Length, m

Supported Length, m

Supported Length, m

Supported Length, m

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

3.0

2.4

1

1

1

1

1

1

1

1

1

1

1

2

1

1

2

2

1

1

2

2

3.6

1

1

1

1

1

1

2

2

1

1

2

2

1

2

2

2

1

2

2

3

4.8

1

1

2

2

1

2

2

2

1

2

2

3

2

2

3

3

2

2

3

4

6.0

1

1

2

2

1

2

2

3

2

2

3

3

2

2

3

4

2

3

4

4

7.2

1

2

2

2

2

2

3

3

2

2

3

4

2

3

4

4

2

3

4

5

8.4

1

2

2

3

2

2

3

4

2

3

4

4

2

3

4

5

3

4

5

9.6

2

2

3

3

2

3

3

4

2

3

4

5

3

4

5

3

4

5

10.8

2

2

3

3

2

3

4

4

2

3

4

5

3

4

5

3

5

12.0

2

2

3

4

2

3

4

5

3

4

5

3

4

4

5

3.6

2.4

1

1

1

1

1

1

1

2

1

1

2

2

1

1

2

2

1

2

2

2

3.6

1

1

1

2

1

1

2

2

1

2

2

3

1

2

2

3

2

2

3

3

4.8

1

1

2

2

1

2

2

3

2

2

3

3

2

2

3

4

2

3

4

4

6.0

1

2

2

3

2

2

3

3

2

3

3

4

2

3

4

5

2

3

4

5

7.2

1

2

2

3

2

2

3

4

2

3

4

5

2

3

4

5

3

4

5

8.4

2

2

3

3

2

3

4

4

2

3

4

5

3

4

5

3

4

9.6

2

2

3

4

2

3

4

5

3

4

5

3

4

4

5

10.8

2

3

3

4

2

3

4

5

3

4

5

3

5

4

12.0

2

3

4

5

3

4

5

3

5

4

5

4

Notes to Table A-35:

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

(2) Roof beams require a minimum bearing length of 140 mm.

(3) Girder trusses require a minimum bearing length of 140 mm unless otherwise specified by the truss manufacturer.

Table A-36 Minimum Number of 38 × 89 mm Northern Species Stud Posts in Exterior Stud Walls Supporting Girder Trusses and Roof Beams Forming Part of Sentence 9.23.10.7 (2)

Col. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

Minimum Number of Studs

Stud Height, m

Span of Beam or Girder, m

Specified Roof Design Snow Load, kPa

1.0

1.5

2.0

2.5

3.0

Supported Length, m

Supported Length, m

Supported Length, m

Supported Length, m

Supported Length, m

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

2.4

1

2

2

2

2

2

3

3

2

2

3

4

2

3

4

4

2

3

4

5

3.6

2

2

3

3

2

3

4

4

2

3

4

5

3

4

5

3

4

4.8

2

3

4

4

3

4

5

3

4

4

5

4

6.0

2

3

4

5

3

4

4

5

4

5

7.2

3

4

5

4

5

4

5

8.4

3

4

4

5

9.6

4

5

5

10.8

4

5

12.0

4

3.0

2.4

2

2

3

3

2

3

3

4

2

3

4

5

3

4

5

3

4

3.6

2

3

4

5

3

4

5

3

5

4

5

4

4.8

3

4

5

3

5

4

5

6.0

3

5

4

5

7.2

4

5

5

8.4

4

9.6

5

10.8

5

12.0

Notes to Table A-36:

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

(2)Roof beams require a minimum bearing length of 89 mm.

(3)Girder trusses require a minimum bearing length of 89 mm unless otherwise specified by the truss manufacturer.

Table A-37 Minimum Number of 38 × 140 mm Northern Species Stud Posts in Exterior Stud Walls Supporting Girder Trusses and Roof Beams Forming Part of Sentence 9.23.10.7 (2)

Col. 1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

Minimum Number of Studs

Stud Height, m

Span of Beam or Girder, m

Specified Roof Design Snow Load, kPa

1.0

1.5

2.0

2.5

3.0

Supported Length, m

Supported Length, m

Supported Length, m

Supported Length, m

Supported Length, m

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

2.4

3.6

4.8

6.0

3.0

2.4

1

1

1

1

1

1

2

2

1

1

2

2

1

2

2

2

1

2

2

3

3.6

1

1

2

2

1

2

2

2

1

2

2

3

2

2

3

3

2

3

3

4

4.8

1

2

2

2

2

2

3

3

2

2

3

4

2

3

4

4

2

3

4

5

6.0

1

2

2

3

2

2

3

4

2

3

4

5

2

3

4

5

3

4

5

7.2

2

2

3

3

2

3

4

4

2

3

4

5

3

4

5

3

5

8.4

2

3

3

4

2

3

4

5

3

4

5

3

5

4

5

9.6

2

3

4

4

3

4

5

3

4

4

5

4

10.8

2

3

4

5

3

4

5

3

5

4

5

12.0

2

3

4

5

3

4

4

5

4

5

3.6

2.4

1

1

1

2

1

1

2

2

1

2

2

3

1

2

2

3

2

2

3

3

3.6

1

2

2

2

1

2

2

3

2

2

3

4

2

3

3

4

2

3

4

5

4.8

1

2

2

3

2

2

3

4

2

3

4

5

2

3

4

5

3

4

5

6.0

2

2

3

4

2

3

4

5

3

4

5

3

4

5

3

5

7.2

2

3

3

4

2

3

4

5

3

4

5

3

5

4

8.4

2

3

4

5

3

4

5

3

5

4

4

9.6

2

3

4

5

3

4

4

5

4

5

10.8

3

4

5

3

5

4

5

12.0

3

4

5

4

5

5

5

Notes to Table A-37:

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

(2)  Roof beams require a minimum bearing length of 140 mm.

(3)  Girder trusses require a minimum bearing length of 140 mm unless otherwise specified by the truss manufacturer.