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Nds Timber Design Values: HEM-FIR
Select Structural|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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| HEM-FIR | Select Structural|Beams and Stringers|4D | 1,300,000 | 470,000 | 1,300 | 405 | 925 | 750 | 140 | 0.43 | WCLIB, WWPA | Beams and Stringers | NDS-2018 Supplement | 4D |
| HEM-FIR | Select Structural|Posts and Timbers|4D | 1,300,000 | 470,000 | 1,200 | 405 | 975 | 800 | 140 | 0.43 | WCLIB, WWPA | Posts and Timbers | NDS-2018 Supplement | 4D |
| HEM-FIR | Standard | 1,200,000 | 440,000 | 550 | 405 | 1,300 | 325 | 150 | 0.43 | WCLIB, WWPA | 2" - 4" wide | NDS-2018 Supplement | 4A |
| HEM-FIR | Stud | 1,200,000 | 440,000 | 675 | 405 | 800 | 400 | 150 | 0.43 | WCLIB, WWPA | 2" & wider | NDS-2018 Supplement | 4A |
| HEM-FIR | Utility | 1,100,000 | 400,000 | 250 | 405 | 850 | 150 | 150 | 0.43 | WCLIB, WWPA | 2" - 4" wide | NDS-2018 Supplement | 4A |
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