Lvl rafter span tables3/24/2024 ![]() I don't know too many reputable builders who deviate from the approved plans because it opens them up to liabilities. Ask your builder if he is following the plans or ask to look at the plans to confirm that this was part of the initial design. Example: In the rafter time table beneath, the highlighted cell (13-0), indicates so 2' x 8' Douglas Fir rafter, including a rank of 2, spacing 24' split, can have a maximum span of 13 feet - 0 inches (13-0) if designed for a stay beladen of 20 psf, and. Many permit offices will require engineering if there are no span tables available for the specific application. The braces need to be supported to a bearing partition, as shown in one diagram higher. If a lumber rafter of similar or less size can work here, then the LVL definitely can as well. Using your numbers, the rafter span you are looking for in the code table 10'-1 11/16" those given in these span tables without affecting the basic strength properties. For non-conforming situations, use FASTBeam. t Tables are based on uniform loads and the most res rictv eofsmpl continuous spans and dry-use conditions. If the soffit is greater than 2, additional design is necessary. An LVL is manufactured without the natural defects that can be found in lumber, therefore an LVL can deliver better performance than a similar sized piece of lumber. 2.0E GP Lam ® LVL Window and Patio Door Headers, Roof Only Roof Applications This table shows the size (e.g.: 211149 2 plies of 1349 x 11149) of headers needed to support various roof truss spans with 2 soffit. ![]()
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