3/19/2024 0 Comments Lvl rafter span tables![]() I don't know too many reputable builders who deviate from the approved plans because it opens them up to liabilities. those given in these span tables without affecting the basic strength properties. 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. SPAN AND SIZE CHARTS FOR ENGINEERED WOOD PRODUCTS. Many permit offices will require engineering if there are no span tables available for the specific application. 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" applications according to the 2018 International Residential Code. In addition, the standard roof rafter spacing used in the roof framing includes 12, 16, 19.2, or. ![]() However, rafter spacing may also be calculated by a professional structural engineer. 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. These rafter span tables provide the best reference to quickly and easily determine the maximum span for all grades of southern pine according to the 2018 International Residential Code. Calculating the rafter spacing is determined by the prescriptive tables provided by the International Residential Code (IRC), which is found in Chapter 8.
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