2. LVL STRUCTURES IN FLOORS, WALLS, ROOFS AND IN SPECIAL APPLICATIONS A B 2.2.7 Renovation applications In renovation, old floors can be reinforced with LVL without increasing the loading of old supporting structures significantly. LVL-P joists can be fixed to the sides of old joists. This is practical because LVL beams are light to lift and fit into the cavities between the joists. Another alternative is to install LVL-C panels on top of old joists. This method provides a rigid structure and can be used to improve the overall bracing of a building. Structural gluing in on-site conditions is demanding, but gluing can be used to reduce deflections. Another connection method is inclined screwing, which gives good stiffness to the connections between old and new components. Figure 2.26. A) LVL-P reinforcement members connected with inclined screws to the sides of an existing joists, B) LVL-C panel reinforcement connected with inclined screws on the top of an existing joists. Figure 2.25. LVL-P joist fixed on one side or both sides of old timber beams as reinforcements. LVL Handbook Europe 65
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