Pseudotsuga menziesii
Also known as Coast Douglas-fir, Oregon Pine, Oregon Douglas-fir, Douglas Tree, Interior Douglas-fir.
Where it grows
LCoastal regions of western North America, from west-central British Columbia, Canada southward to central California, United States.
| Appearance | ||
|---|---|---|
| Sapwood | tan to white | 
|
| Heartwood | yellowish tan to light brown | |
| Grain | Normally straight, with occasional wavy or spiral texture | |
| Height | 250 ft with diameter 6' | |
| Properties | |
|---|---|
| Average weight at 12% M.C ( kg/m³) | 480-610 |
| Specific gravity at 12 % M.C. (kg/m³) | 0,48 |
| Processing | |
|---|---|
|
« Poor
Good »
|
|
| Machining | 
|
| Gluing |
|
| Nailing |
|
| Finishing |
|
End Uses
Commercial and industrial, institutional buildings, temporary works, interior.
Remarks
Douglas Fir is one of the strongest of all North American softwoods. It has the highest modulus of elasticity value (an important factor in the stiffness of roof and floor systems). This species commands respect as a dependable, all-purpose wood for both heavy and light construction. Douglas Fir lumber products are identified by region as "DF", "DFS" and "D Fir (N) on the grade stamp.
