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Nds Timber Design Values: MEL LUMBER
M-20 to M-29
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 psi (psi) | Ft psi (psi) | commercial grade | grading rules agency | product category | size classification | standard | table id |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MEL LUMBER | M-20 | 1,900,000 | 890,000 | 2,000 | 2,100 | 1,600 | M-20 | SPIB | MEL | 2" and less in thickness | NDS-2018 Supplement | 4C |
| MEL LUMBER | M-21 | 1,900,000 | 890,000 | 2,300 | 1,950 | 1,400 | M-21 | NLGA, SPIB | MEL | 2" and wider | NDS-2018 Supplement | 4C |
| MEL LUMBER | M-22 | 1,700,000 | 790,000 | 2,350 | 1,950 | 1,500 | M-22 | NLGA, SPIB | MEL | 2" and wider | NDS-2018 Supplement | 4C |
| MEL LUMBER | M-23 | 1,800,000 | 840,000 | 2,400 | 1,975 | 1,900 | M-23 | NLGA, SPIB | MEL | 2" and wider | NDS-2018 Supplement | 4C |
| MEL LUMBER | M-24 | 1,900,000 | 890,000 | 2,700 | 2,100 | 1,800 | M-24 | NLGA, SPIB | MEL | 2" and wider | NDS-2018 Supplement | 4C |
| MEL LUMBER | M-25 | 2,200,000 | 1,030,000 | 2,750 | 2,100 | 2,000 | M-25 | NLGA, SPIB | MEL | 2" and wider | NDS-2018 Supplement | 4C |
| MEL LUMBER | M-26 | 2,000,000 | 930,000 | 2,800 | 2,150 | 1,800 | M-26 | NLGA, SPIB | MEL | 2" and wider | NDS-2018 Supplement | 4C |
| MEL LUMBER | M-27 | 2,100,000 | 980,000 | 3,000 | 2,400 | 2,000 | M-27 | SPIB | MEL | 2" and wider | NDS-2018 Supplement | 4C |
| MEL LUMBER | M-28 | 1,700,000 | 790,000 | 2,200 | 1,900 | 1,600 | M-28 | SPIB | MEL | 2" and wider | NDS-2018 Supplement | 4C |
| MEL LUMBER | M-29 | 1,700,000 | 790,000 | 1,550 | 1,650 | 850 | M-29 | SPIB | MEL | 2" and wider | NDS-2018 Supplement | 4C |
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