See the notes below the span tables for details. This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance. I don't know too many reputable builders who deviate from the approved plans because it opens them up to liabilities. Note: Our floor joist span tables are based on loadings given in the newer, amended version of BS 6399-1. 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. Many permit offices will require engineering if there are no span tables available for the specific application. Continuous Span Beams are beams supported at three or more points along their length. Single Span Beams are beams supported at two points only. If a lumber rafter of similar or less size can work here, then the LVL definitely can as well. Span For the purpose of using these tables, span may be interpreted as the clear distance between supports measured along the beam. VERSA-LAM ® laminated veneer lumber (LVL) beams and headers eliminate twisting, shrinking and splitting, press deliver flatter, quieter floors and structures. Using your numbers, the rafter span you are looking for in the code table 10'-1 11/16" ENGINEERED WOOD PRODUCTS (EWP) LVL SPAN AND SIZE CHARTS. Learn what LVL beams are, how they are made, and how far they can span without support. 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. Spans are measured from center-to-center of supports. 1 1/2 VERSA-LAM 1.
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