Nds Timber Design Values: COTTONWOOD
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 |
|---|---|---|---|---|---|---|---|---|---|
| COTTONWOOD | Construction | 1,000,000 | 370,000 | 700 | 320 | 650 | 400 | 125 | 4A |
| COTTONWOOD | No. 1 | 1,200,000 | 1,200,000 | 625 | 320 | 625 | 375 | 125 | 4A |
| COTTONWOOD | No. 2 | 1,100,000 | 1,100,000 | 625 | 320 | 475 | 350 | 125 | 4A |
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