How much does Red Spruce lumber weigh?
A Red Spruce 2×4, 8 ft weighs at 12% moisture content, kiln-dried.
27.5 lb/ft³ · 5.33 bd ft ·
Red 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 530 lbf, the 26th hardest of the 46 species on this site. Green, freshly cut moisture content runs 52% in the heartwood to 113% in the sapwood. Total shrinkage from green to ovendry runs about 11.8% by volume.
Red Spruce weight by size
| Size | Actual (dry) | 8 ft, 12% MC | Per foot | Green range |
|---|---|---|---|---|
| 2×2 | 1-1/2″ × 1-1/2″ | 3.4 lb | 0.43 lb/ft | 4.8–6.7 lb |
| 2×3 | 1-1/2″ × 2-1/2″ | 5.7 lb | 0.72 lb/ft | 7.8–10.9 lb |
| 2×4 | 1-1/2″ × 3-1/2″ | 8.0 lb | 1.00 lb/ft | 10.9–15.2 lb |
| 2×6 | 1-1/2″ × 5-1/2″ | 12.6 lb | 1.57 lb/ft | 17.1–24.0 lb |
| 2×8 | 1-1/2″ × 7-1/4″ | 16.6 lb | 2.08 lb/ft | 22.9–32.0 lb |
| 2×10 | 1-1/2″ × 9-1/4″ | 21.2 lb | 2.65 lb/ft | 29.0–40.6 lb |
| 2×12 | 1-1/2″ × 11-1/4″ | 25.8 lb | 3.22 lb/ft | 35.0–49.1 lb |
| 4×4 | 3-1/2″ × 3-1/2″ | 18.7 lb | 2.34 lb/ft | 24.8–34.7 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 Alder (SG 0.37) · Denser: Sitka Spruce (SG 0.37)