2. LVL STRUCTURES IN FLOORS, WALLS, ROOFS AND IN SPECIAL APPLICATIONS Figure 2.37. LVL purlins installed perpendicular to roof surface. Bracing beams are needed in purlin width directions. A) Steel sheeting transfers lateral torsional buckling support forces to the bracing beam B) Wooden batten side supports at the mid span transfer loads perpendicular to the span to bracing beams. Figure 2.36. Support details of purlins installed vertically or perpendicular to the roof surface. A B 72 LVL Handbook Europe
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