Lvl 2.0e beam span tables how to#

The required E-value does not change when you double the 2×6 because as you double the allowable load, you are doubling the thickness of the beam. Therefore, a double 2×6 carries 2 x 347 = 694 pounds per lineal foot. Note: a single 2×6 will support 347 pounds per lineal foot of beam. (in AF&PA Design Values for Joists and Rafters #2 hem-fir = Fb psi & E psi- so use span table column Fb 1100)Ĭhoose the row for the size of lumber used in the double header: use 2×6 in this example. Select the Fb column of the lumber you intend to use Pick the span you want (pick 4’0″ for example) Just do the following:ĭetermine the total load per foot of beam But you can trick WSDD tables into giving you values for double or triple 2-by beams with other deflection limits. The WSDD tables only list values for solid wood beams at deflection limits of L/360. The WSDD is an extremely useful book (WSDD costs $20. American Forest & Paper Association’s Wood Structural Design Data, provides span recommendations for solid-sawn wood beams up to 32 feet, but the table runs a hefty 140 pages.

And even though span tables provide limited data, they are very long. Most beam tables only list values for whole-foot spans like 11’0″, 12’0″, etc. You merely look for the distance you need to span match the load per foot of beam to the appropriate Fb(strength) and E(stiffness) values listed and bang: you have a winner! Span tables are easy to use, but they have limitations. Sawn-Lumber span tables are convenient tools. Technical experts have computed many combinations of these variables and present a variety of solutions in the form of span tables. You can do these calculations yourself or you can use span tables. Formulas that determine the allowable span and size of a beam rely on a host of variables like species, grade, size, deflection limit and type of load. Structural ability of sawn- and engineered-wood beams are predicted through mathematical calculation. No matter what material we specify, beams must provide adequate strength, stiffness, and shear resistance. We will compare the performance and cost of sawn-lumber, LVL, Timberstrand, Parallam and Anthony Power Beam in several different applications.

Lvl 2.0e beam span tables how to#

We know how to measure the forces acting on a beam, now we’ll use this information to choose the appropriate structural material to resist the loads. In Part 1, “ Calculating Loads On Headers and Beams“, we learned how to trace load paths and translate roof, wall and floor loads into pounds per lineal foot of supporting beam. Once the loads acting on structural beams are calculated, the next step is to size and select the appropriate beam. Some information contained in it may be outdated.

LVL 2900Fb-2.Please note: This older article by our former faculty member remains available on our site for archival purposes. (Almost 2x what I need)Īgree with my assumption (in bold above)? So a double-ply LVL 3 1/2' x 9 1/2' x 11 ft beam can support 353 x 2 = 706 PLF. Using the Uniform floor load (PLF) tables from LP corp, I see that a single Total weight of supported floor: 55 x 154 = 8470 lbs.Īssuming beam is carrying 50% of this load (and the exterior wall carrying the other 50%) 8470/2 = 4235 lbs.īeam is (nearly) 11ft long. Using standard load estimates from LVL span tables: 40 psf live, 15 psf dead = 55 lb/sqft. Proper blocking will be done in the cellar belowĪrea of floor above the beam: 14' x 11' = 154 sqft.Due to orientation of floor above, only the left area of the floor will be supported by the beam (see sketch no.Interior wall, not carrying the roof load.of the LVL beams) and he wouldn't exactly give me an answer but he did say the key is determining the PLF (pounds per lineal foot) that the beam will carry. I talked to tech support at LPcorp (a mfg. I have the opinions from a couple contractors but I want to verify the size of the beam needed. Removing a load bearing wall and replacing with an LVL beam.