How much does Sitka Spruce lumber weigh?
A Sitka Spruce 2×4, 8 ft weighs at 12% moisture content, kiln-dried.
27.5 lb/ft³ · 5.33 bd ft ·
Sitka Spruce is a softwood with a basic specific gravity of 0.37 (ovendry mass over green volume, USDA Wood Handbook Table 5-3b) — 27.5 lb/ft³ once dried to 12% moisture content. Its Janka side hardness is 510 lbf, the 28th hardest of the 46 species on this site. Green, freshly cut moisture content runs 41% in the heartwood to 142% in the sapwood. Total shrinkage from green to ovendry runs about 11.5% by volume.
Sitka Spruce weight by size
| Size | Actual (dry) | 8 ft, 12% MC | Per foot | Green range |
|---|---|---|---|---|
| 1×2 | 3/4″ × 1-1/2″ | 1.7 lb | 0.21 lb/ft | 2.2–3.8 lb |
| 1×3 | 3/4″ × 2-1/2″ | 2.9 lb | 0.36 lb/ft | 3.6–6.2 lb |
| 1×4 | 3/4″ × 3-1/2″ | 4.0 lb | 0.50 lb/ft | 5.0–8.6 lb |
| 1×6 | 3/4″ × 5-1/2″ | 6.3 lb | 0.79 lb/ft | 8.0–13.6 lb |
| 1×8 | 3/4″ × 7-1/4″ | 8.3 lb | 1.04 lb/ft | 10.6–18.2 lb |
| 1×10 | 3/4″ × 9-1/4″ | 10.6 lb | 1.32 lb/ft | 13.4–23.0 lb |
| 1×12 | 3/4″ × 11-1/4″ | 12.9 lb | 1.61 lb/ft | 16.3–27.9 lb |
| 2×2 | 1-1/2″ × 1-1/2″ | 3.4 lb | 0.43 lb/ft | 4.4–7.6 lb |
| 2×3 | 1-1/2″ × 2-1/2″ | 5.7 lb | 0.72 lb/ft | 7.2–12.4 lb |
| 2×4 | 1-1/2″ × 3-1/2″ | 8.0 lb | 1.00 lb/ft | 10.1–17.3 lb |
| 2×6 | 1-1/2″ × 5-1/2″ | 12.6 lb | 1.57 lb/ft | 15.9–27.3 lb |
| 2×8 | 1-1/2″ × 7-1/4″ | 16.6 lb | 2.08 lb/ft | 21.2–36.4 lb |
| 2×10 | 1-1/2″ × 9-1/4″ | 21.2 lb | 2.65 lb/ft | 26.9–46.1 lb |
| 2×12 | 1-1/2″ × 11-1/4″ | 25.8 lb | 3.22 lb/ft | 32.5–55.8 lb |
| 4×4 | 3-1/2″ × 3-1/2″ | 18.7 lb | 2.34 lb/ft | 23.0–39.4 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: Red Spruce (SG 0.37) · Denser: White Fir (SG 0.37)