How much does Grand Fir lumber weigh?
A Grand Fir 2×4, 8 ft weighs at 12% moisture content, kiln-dried.
25.9 lb/ft³ · 5.33 bd ft ·
Grand Fir is a softwood with a basic specific gravity of 0.35 (ovendry mass over green volume, USDA Wood Handbook Table 5-3b) — 25.9 lb/ft³ once dried to 12% moisture content. Its Janka side hardness is 490 lbf, the 30th hardest of the 46 species on this site. Green, freshly cut moisture content runs 91% in the heartwood to 136% in the sapwood. Total shrinkage from green to ovendry runs about 11% by volume.
Grand Fir weight by size
| Size | Actual (dry) | 8 ft, 12% MC | Per foot | Green range |
|---|---|---|---|---|
| 2×2 | 1-1/2″ × 1-1/2″ | 3.2 lb | 0.40 lb/ft | 5.7–7.0 lb |
| 2×3 | 1-1/2″ × 2-1/2″ | 5.4 lb | 0.67 lb/ft | 9.3–11.5 lb |
| 2×4 | 1-1/2″ × 3-1/2″ | 7.6 lb | 0.94 lb/ft | 12.9–15.9 lb |
| 2×6 | 1-1/2″ × 5-1/2″ | 11.9 lb | 1.48 lb/ft | 20.4–25.2 lb |
| 2×8 | 1-1/2″ × 7-1/4″ | 15.7 lb | 1.96 lb/ft | 27.2–33.6 lb |
| 2×10 | 1-1/2″ × 9-1/4″ | 20.0 lb | 2.50 lb/ft | 34.4–42.5 lb |
| 2×12 | 1-1/2″ × 11-1/4″ | 24.3 lb | 3.04 lb/ft | 41.7–51.5 lb |
| 4×4 | 3-1/2″ × 3-1/2″ | 17.6 lb | 2.20 lb/ft | 29.4–36.4 lb |
Board-to-board variation of ±10-15% is normal even within one species and size. How these numbers are computed.
Related
- All species: wood species index
- By density: Lighter: Sugar Pine (SG 0.34) · Denser: Incense Cedar (SG 0.35)