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Structural Lumber

Structural Lumber

US Units

   
Nominal
Dimensions

in
Net or Dressed
Dimensions

in (b × h)
Actual
Area
in2
Weight
lb/ft
x-x axis y-y axis
Ix
in4
Sx
in3
Iy
in4
Sy
in3
2 × 4 1.5 × 3.5 5.251.3 5.36 3.06 0.981.31
2 × 6 1.5 × 5.5 8.252.0 20.80 7.56 1.552.06
2 × 8 1.5 × 7.25 10.882.6 47.6313.14 2.042.72
2 × 10 1.5 × 9.25 13.883.4 98.9321.39 2.603.47
2 × 12 1.5 × 11.25 16.884.1177.9831.64 3.164.22
 
3 × 4 2.5 × 3.5 8.752.1 8.93 5.10 4.56 3.65
3 × 6 2.5 × 5.5 13.753.3 34.6612.60 7.16 5.73
3 × 8 2.5 × 7.25 18.134.4 79.3921.90 9.44 7.55
3 × 10 2.5 × 9.25 23.135.6164.8935.6512.04 9.64
3 × 12 2.5 × 11.25 28.136.8296.6352.7314.6511.72
 
4 × 4 3.5 × 3.5 12.253.0 12.51 7.1512.51 7.15
4× 6 3.5 × 5.5 19.254.7 48.5317.6519.6511.23
4 x 8 3.5 × 7.25 25.386.2111.1530.6625.9014.80
4 × 10 3.5 × 9.25 32.387.9230.8449.9133.0518.89
4 × 12 3.5 × 11.25 39.389.6415.2873.8340.2022.97
 
6 × 6 5.5 × 5.5 30.25 7.4 76.3 27.7 76.327.7
6 × 8 5.5 × 7.5 41.2510.0193.4 51.6104.037.8
6 × 10 5.5 × 9.5 52.2512.7393.0 82.7131.747.9
6 × 12 5.5 × 11.5 63.2515.4697.1121.2159.458.0
 
8 × 8 7.5 × 7.5 56.2513.7263.7 70.3263.7 70.3
8 × 10 7.5 × 9.5 71.2517.3535.9112.8334.0 89.1
8 × 12 7.5 × 11.5 86.2521.0950.5165.3404.3107.8