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Nds Timber Design Values: SPRUCE-PINE-FIR (SOUTH)
Select Structural|Beams and Stringers|4D to Utility
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) | G | grading rules agency | size classification | standard | table id |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SPRUCE-PINE-FIR (SOUTH) | Select Structural|Beams and Stringers|4D | 1,200,000 | 440,000 | 1,050 | 335 | 675 | 625 | 125 | 0.36 | NELMA, WWPA, WCLIB | Beams and Stringers | NDS-2018 Supplement | 4D |
| SPRUCE-PINE-FIR (SOUTH) | Select Structural|Posts and Timbers|4D | 1,200,000 | 440,000 | 1,000 | 335 | 700 | 675 | 125 | 0.36 | NELMA, WWPA, WCLIB | Posts and Timbers | NDS-2018 Supplement | 4D |
| SPRUCE-PINE-FIR (SOUTH) | Standard | 900,000 | 330,000 | 500 | 335 | 1,000 | 225 | 135 | 0.36 | NELMA, WCLIB, WWPA | 2" - 4" wide | NDS-2018 Supplement | 4A |
| SPRUCE-PINE-FIR (SOUTH) | Stud | 1,000,000 | 370,000 | 600 | 335 | 625 | 275 | 135 | 0.36 | NELMA, WCLIB, WWPA | 2" & wider | NDS-2018 Supplement | 4A |
| SPRUCE-PINE-FIR (SOUTH) | Utility | 900,000 | 330,000 | 225 | 335 | 675 | 100 | 135 | 0.36 | NELMA, WCLIB, WWPA | 2" - 4" wide | NDS-2018 Supplement | 4A |
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