Structural Strength
|
Structural Strength
|
|
 |
All BP Wood Fibre insulating sheathings respect NBC 95 section 9.23.16.2.A; Wall Sheathing, Thickness, Rating and Material Standards.
HP ½" and Excel ½" exceed those structural strength requirements by more than 100%.
Excel 1" procures even more structural solidity.
National Building Code 9.23.10.2.
Bracing and Lateral Support
- National Building Code 9.23.10.2. Bracing and Lateral Support 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).
- Bracing is not required where walls are?b)
- clad with panel type siding,
- diagonally sheathed with lumber, or
- sheathed with plywood, OSB, waferboard, gypsum or fiberboard sheathing
National Building Code A-9.23.10.2.
Bracing
?Where the interior is not finished, bracing is necessary if the siding itself for the sheathing does not provide the required racking strength. If panel type siding is used, or if the sheathing consists of plywood, OSB, waferboard, gypsum board, diagonal lumber, or fiberboard sheathing, additional bracing is not considered necessary because of the wind bracing provided by these materials.
Therefore the National Building Code, (NBC) states that the structural strength of Wood Fibre sheathing is sufficient in the construction of buildings up to 3 stories high without the necessity of adding bracing.
Information for 'Size and Spacing of Studs for Exterior Walls' tables below, extracted from NBC 95, section 9.23.10; Wall Studs, Table 9.23.10.1, Size and Spacing of Studs.
Size and Spacing of Studs for Exterior Walls
|
Supported Load
|
Minimum Stud
Size
|
Maximum Stud
Spacing
|
Maximum
Unsupported
Height
|
|
Roof with or without
Attic storage
|
38 x 84 mm
(2 x 3)
|
400 mm (16")
|
2.4 m (7? 10")
|
|
38 x 89 mm
(2 x 4)
|
600 mm (24")
|
3.0 m (9? 10")
|
|
Supported Load
|
Minimum Stud
Size
|
Maximum Stud
Spacing
|
Maximum
Unsupported
Height
|
|
Roof with or without
Attic storage
Plus 1 floor
|
38 x 89 mm
(2 x 4)
|
400 mm (16")
|
3.0 m (9? 10")
|
|
38 x 140 mm
(2 x 6)
|
600 mm (24")
|
3.0 m (9? 10")
|
|
Supported Load
|
Minimum Stud
Size
|
Maximum Stud
Spacing
|
Maximum
Unsupported
Height
|
|
Roof with or without
Attic storage
Plus 2 floors
|
38 x 89 mm
(2 x 4)
|
300 mm (12")
|
3.0 m (9? 10")
|
|
64 x 89 mm
(3 x 4)
|
400 mm (16")
|
3.0 m (9? 10")
|
|
38 x 140 mm
(2 x 6)
|
400 mm (16")
|
3.6 m (11? 10")
|
|
Supported Load
|
Minimum Stud
Size
|
Maximum Stud
Spacing
|
Maximum
Unsupported
Height
|
|
Roof with or without
Attic storage
Plus 3 floors
|
38 x 140 mm
(2 x 6)
|
300 mm (12")
|
1.8 m (5? 11")
|
COMFORTABLE LIVING in a home envelope that will stand solid.