Wood Beams Strength

Bending and compression strength of wood beams

Compression and bending strength of some common wood species are indicated below:

Stress (psi)
Wood Species Bending Compression
Horizontal Shear Perpendicular to Grain Parallel to Grain
Wet Dry Wet Dry Wet Dry
Birch, Yellow 1417 1668 477 715 960 1200
Fir, Douglas 1417 1668 417 625 1360 1700
Larch, Western 1417 1668 417 625 1360 1700
Maple, Red 1271 1495 410 615 880 1100
Oak, Black 1369 1610 590 885 920 1150
Pine, Eastern White 1222 1438 223 335 960 1200
Redwood 1320 1553 433 650 1200 1500
  • 1 psi (lb/in2) = 6,894.8 Pa (N/m2) = 6.895x10-3 N/mm2

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