Spruce-Pine-Fir(S-P-F)

Spruce-Pine-Fir              Abbr: S-P-F
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 1875 1050 135 425 1610 1,500,000 550,000
2×3
2×4
2×6 1625 910 1540
2×8 1500 840 1470
2×10 1375 770 1400
2×12 1250 700 1400
No.1 & No.2 2×2 1310 675 135 425 1320 1,400,000 510,000
2×3
2×4
2×6 1135 585 1265
2×8 1050 540 1205
2×10 960 495 1150
2×12 875 450 1150
No.3 2×2 750 375 135 425 745 1,200,000 440,000

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.