Framing timber sizes vary depending on whether they are intended for structural or non-structural applications. According to information from southpacifictimber.co.nz, framing timber is available in distinct size ranges for these different uses.
Framing Timber Sizes Overview
The primary distinction in framing timber sizes is based on its intended use – either carrying structural loads or serving non-load-bearing purposes. The reference specifies the following size ranges:
- Structural Sizes: Timber used in load-bearing walls, floors, and roofs.
- Non-Structural Sizes: Timber used in applications like internal partitioning or other areas not requiring significant load-bearing capacity.
Here's a breakdown of the specified sizes:
| Type | Size Range | Note |
|---|---|---|
| Structural | 45 x 45mm – 290 x 45mm | Common widths are 45mm, depth varies widely. |
| Non-Structural | 75 x 45mm – 300 x 50mm | Width and depth ranges differ from structural. |
Please note: The reference cited "75 x 45m" for the start of the non-structural range, which is assumed to be a typographical error and interpreted as "75 x 45mm" based on standard timber dimensions.
These dimensions refer to the cross-sectional size of the timber. The specific size required for a project depends on engineering requirements, building codes, and the intended application. For instance, larger dimensions are typically needed for longer spans or heavier loads in structural applications.
While the question focuses solely on sizes, it's worth noting that framing timber is also specified by its grades (e.g., SG6, SG8, SG10 for structural, or Non-Structural) and treatments (e.g., H1.2, H3.2, H4, H5) which relate to its strength properties and durability against environmental factors like rot and insect attack. The timber referenced is sourced from renewable New Zealand Radiata Pine.
