EWPAA Structural Plywood and LVL Design Manual - Engineered ...

FIGURE 6.1: Section Properties for LVL with all veneers orientated in the longitudinal directionWhen LVL contains cross-bands, the section properties are calculated based on the parallel ply theoryused in plywood design.Section properties for cross-banded LVL are calculated as follows:(a)(b)(c)for on edge bending, tension, and compressive capacities and edgewise flexural rigidity, veneerswith grain direction at right angles to the direction of stress are ignored in the calculation ofarea, first moment of area and second moment of area. A typical example of cross-banded LVLand section properties is shown in FIGURE 6.2.for on flat bending and shear applications, section properties are calculated based on parallelply theory used in calculating plywood section properties.(Refer Appendix 0 of Chapter 5). Anexample calculation of cross-banded LVL section properties for on flat applications is shown inFIGURE 6.3.the full cross-sectional area is effective when resisting in-plane shear.FIGURE 6.2 : Cross-banded LVL section properties for edgewise bending, tension, compression and flexuralrigidity38