Southern Forest Products Association Span Tables. From window openings to garage door headers, Microllam® LVL is a versatile solution that supports heavy loads without worry. Uniform load tables for APA-trademarked structural panels manufactured/qualified in accordance with APA PRP-108. Laminated veneer lumber is an 'engineered wood product', developed in the 1960s, is produced by gluing together layers of wood veneers with the wood grains in parallel. I don't know too many reputable builders who deviate from the approved plans because it opens them up to liabilities. A versatile performer in a wide range of structural applications. Definition & Characteristics of 'LVL' - Laminated Veneer Lumber, Beams, Headers. technical department for other uses, aplications or uses in wet service conditions. 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. 7-unless otherwise indicated, tables are based on 'true' modulus of elasticity e 1.9 x 10 6 psi (shear-free) 8-designer must use the 'apparent' modulus of elasticity e 1.8 x 10 6 psi for other conditions of loading 9-contact global lvl inc. simple span, uniformly loaded beams: + 270 wL4 Ebd3 28.8 wL2 Ebd Where: deflection (in.) w uniform load (plf) L span (feet) b beam thickness (in. 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" 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.