Nds Timber Design Values: SPRUCE-PINE-FIR (SOUTH)
NDS (National Design Specification) reference design values for visually graded dimension lumber — bending, tension, shear, compression, and modulus of elasticity
| species | grade | E psi (psi) | Emin psi (psi) | Fb psi (psi) | Fc perp psi (psi) | Fc psi (psi) | Ft psi (psi) | Fv psi (psi) | table id |
|---|---|---|---|---|---|---|---|---|---|
| SPRUCE-PINE-FIR (SOUTH) | Commercial | 1,200,000 | 440,000 | 4 | 1,100 | 335 | 12 | 950 | 4D |
| SPRUCE-PINE-FIR (SOUTH) | No. 1 | 1,200,000 | 1,200,000 | 875 | 335 | 1,050 | 400 | 135 | 4A |
| SPRUCE-PINE-FIR (SOUTH) | No. 2 | 1,100,000 | 1,100,000 | 775 | 335 | 1,000 | 350 | 135 | 4A |
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