# Structural Lumber - Properties

## Properties of structural lumber

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Nominal Dimension (in) | Actual Dimension (in) | Area (in^{2}) | Section Modulus - E -(in ^{3}) | Moment of Inertia - W -(in ^{4}) | Weight (lb/ft) |
---|---|---|---|---|---|

1 x 3 | 0.75 x 2.5 | 1.875 | 0.47 | ||

1x 4 | 0.75 x 3.5 | 2.625 | 0.64 | ||

1 x 6 | 0.75 x 5.5 | 4.125 | 1.0 | ||

1 x 8 | 0.75 x 7.25 | 5.4375 | 1.3 | ||

1 x 10 | 0.75 x 9.25 | 6.9375 | 1.7 | ||

1 x 12 | 0.75 x 11.25 | 8.4375 | 2.1 | ||

2 x 3 | 1.5 x 2.5 | 3.75 | 1.56 | 1.95 | 0.9 |

2 x 4 | 1.5 x 3.5 | 5.25 | 3.06 | 5.36 | 1.3 |

2 x 6 | 1.5 x 5.5 | 8.25 | 7.56 | 20.8 | 2.0 |

2 x 8 | 1.5 x 7.25 | 10.875 | 13.1 | 47.6 | 2.6 |

2 x 10 | 1.5 x 9.25 | 13.875 | 21.4 | 98.9 | 3.4 |

2 x 12 | 1.5 x 11.25 | 16.875 | 31.6 | 178 | 4.1 |

3 x 2 | 2.5 x 1.5 | 3.75 | 0.94 | 0.70 | 0.9 |

3 x 4 | 2.5 x 3.5 | 8.75 | 5.10 | 8.93 | 2.1 |

3 x 6 | 2.5 x 5.5 | 13.75 | 12.6 | 34.7 | 3.3 |

3 x 8 | 2.5 x 7.25 | 18.125 | 21.9 | 79.4 | 4.4 |

3 x 10 | 2.5 x 9.25 | 23.125 | 35.7 | 165 | 5.6 |

3 x 12 | 2.5 x 11.25 | 28.125 | 52.7 | 297 | 6.8 |

4 x 2 | 3.5 x 1.5 | 5.25 | 1.31 | 0.98 | 1.3 |

4 x 3 | 3.5 x 2.5 | 8.75 | 3.64 | 4.56 | 2.1 |

4 x 4 | 3.5 x 3.5 | 12.25 | 7.15 | 12.5 | 3.0 |

4 x 6 | 3.5 x 5.5 | 19.25 | 17.6 | 48.5 | 4.7 |

4 x 8 | 3.5 x 7.25 | 25.375 | 30.7 | 111 | 6.2 |

4 x 10 | 3.5 x 9.25 | 32.375 | 49.9 | 231 | 7.9 |

4 x 12 | 3.5 x 11.25 | 39.375 | 73.8 | 415 | 9.6 |

6 x 2 | 5.5 x 1.5 | 8.25 | 2.1 | 1.55 | 2.0 |

6 x 3 | 5.5 x 2.5 | 13.8 | 5.7 | 7.16 | 3.3 |

6 x 4 | 5.5 x 3.5 | 19.3 | 11.2 | 19.7 | 4.7 |

6 x 6 | 5.5 x 5.5 | 30.3 | 27.7 | 76.3 | 7.4 |

6 x 8 | 5.5 x 7.5 | 41.3 | 51.6 | 193 | 10.0 |

6 x 10 | 5.5 x 9.5 | 52.3 | 82.7 | 393 | 12.7 |

6 x 12 | 5.5 x 11.5 | 63.3 | 121 | 697 | 15.4 |

8 x 2 | 7.25 x 1.5 | 10.9 | 2.7 | 2.04 | 2.6 |

8 x 3 | 7.25 x 2.5 | 18.1 | 7.6 | 9.44 | 4.4 |

8 x 4 | 7.25 x 3.5 | 25.4 | 14.8 | 25.9 | 6.2 |

8 x 6 | 7.5 x 5.5 | 41.3 | 37.8 | 104 | 10.0 |

8 x 8 | 7.5 x 7.5 | 56.3 | 70.3 | 264 | 13.7 |

8 x 10 | 7.5 x 9.5 | 71.3 | 113 | 536 | 17.3 |

8 x 12 | 7.5 x 11.5 | 86.3 | 165 | 951 | 21.0 |

8 x 14 | 7.5 x 13.5 | 101 | 228 | 1538 | 24.6 |

8 x 16 | 7.5 x 15.5 | 116 | 300 | 2327 | 28.3 |

10 x 10 | 9.5 x 9.5 | 90.3 | 143 | 679 | 21.9 |

10 x 12 | 9.5 x 11.5 | 109 | 209 | 1204 | 26.6 |

10 x 14 | 9.5 x 13.5 | 128 | 289 | 1948 | 31.2 |

10 x 16 | 9.5 x 15.5 | 147 | 380 | 2948 | 35.8 |

10 x 18 | 9.5 x 17.5 | 166 | 485 | 4243 | 40.4 |

12 x 12 | 11.5 x 11.5 | 132 | 32.1 | ||

12 x 14 | 11.5 x 13.5 | 152 | 37.7 | ||

12 x 16 | 11.5 x 15.5 | 178 | 43.3 |

*1 in = 25.4 mm*

Based on standard commercially available lumber within the USA.

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