The structural integrity of a building relies heavily on its headers, which are horizontal beams that support the weight of the structure above them. Choosing the right header size is crucial for ensuring the stability and longevity of your building. This guide provides a detailed header span load bearing header size chart to help you determine the appropriate header size for your specific project.
Several factors influence the size of header required for a particular application:
The following header span load-bearing capacity chart provides a general guide to selecting the appropriate header size for various span lengths and live loads (imposed loads):
Span Length (ft.) | Live Load (lb/ft.) | Wood Header Size (in.) | Steel Header Size (in.) | Concrete Header Size (in.) |
---|---|---|---|---|
6 | 50 | 2x4 | 1.5x3.5 | 6x6 |
100 | 2x6 | 2x4 | 8x8 | |
150 | 2x8 | 2.5x5 | 10x10 | |
8 | 50 | 2x6 | 2x4 | |
100 | 2x8 | 2.5x5 | 10x10 | |
150 | 2x10 | 3x4 | 12x12 | |
10 | 50 | 2x8 | 2.5x5 | |
100 | 2x10 | 3x4 | 12x12 | |
150 | 2x12 | 3.5x6 | 14x14 | |
12 | 50 | 2x10 | 3x4 | |
100 | 2x12 | 3.5x6 | 14x14 | |
150 | 3x10 | 4x5 | 16x16 | |
14 | 50 | 2x12 | 3.5x6 | |
100 | 3x10 | 4x5 | 16x16 | |
150 | 3x12 | 4.5x6 | 18x18 | |
16 | 50 | 3x10 | 4x5 | |
100 | 3x12 | 4.5x6 | 18x18 | |
150 | 3x14 | 5x7 | 20x20 | |
18 | 50 | 3x12 | 4.5x6 | |
100 | 3x14 | 5x7 | 20x20 | |
150 | 4x12 | 6x8 | 22x22 | |
20 | 50 | 4x12 | 6x8 | |
100 | 4x14 | 7x9 | 24x24 | |
150 | 4x16 | 8x10 | 26x26 |
Note:
A well-sized header is essential for the structural integrity of your building. By utilizing the header span load-bearing capacity chart and following effective strategies, you can select the appropriate header size for your project. Remember to always consult with a structural engineer for complex or critical load-bearing applications. With proper planning and installation, your headers will provide reliable support for your building for years to come.
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