Northern Species(N)

Northern Species              Abbr: Northern or N
Design values are in pounds per square inch (psi)
   Bending Tension parallel to grain  Shear parallel to grain Comp. perp. to grain Comp. parallel to grain Modulus of Elasticity
Grade Size Fb Ft Fv Fc perp Fc Emin 
Select Structural 2×2 1500 675 110 350 1265 1,100,000 400,000
2×3
2×4
2×6 1300 585 1210
2×8 1200 540 1155
2×10 1100 495 1100
2×12 1000 450 1100
No.1 & No.2 2×2 900 410 110 350 975 1,100,000 400,000
2×3
2×4
2×6 780 355 935
2×8 720 330 890
2×10 660 300 850
2×12 600 275 850
No.3 2×2 525 225 110 350 575 1,000,000 370,000
2×3
2×4
2×6 455 195 550
2×8 420 180 525
2×10 385 165 500
2×12 350 150 500

These size adjusted values are intended for use by qualified designers and can be used in conjunction with the appropriate adjustment factors from the tables in the PDF below. These tables are the same as the ones shown on the page “Design Values for Canadian Species used in the U.S.”

Download the four tables of adjustment factors.