WoodwoodSoftwood
Fir (Douglas)
Strong, stiff softwood and the standard structural framing timber in North America. Good strength-to-weight, but not decay resistant when left exposed.
Properties
- Family
- Wood
- Category
- wood
- Species
- Pseudotsuga menziesii
- Density
- 0.53 g/cm³ · 530 kg/m³
Applicationswhere fir (douglas) is normally specified
Structural framingBeamsPlywoodGeneral construction
Practical notes
- Density is for air-dried stock at about 12% moisture content
- Rated for structural use — check the grade stamp before load-bearing work
- Requires protection outdoors; treat or keep it dry