2. LVL STRUCTURES IN FLOORS, WALLS, ROOFS AND IN SPECIAL APPLICATIONS Figure 2.6. Transverse blocking and tension board below the floor joists for reducing deflection under point load and improved performance against floor vibration. Two blocking lines at 1m spacing at the centre of the span are recommended for L>4m span length. 1. Decking panel, 2. Floor joists, 3. Transverse tension board (C18, min 22x100) under the joists fixed with 2,8x75 nails to the joists and blockings. 4. Blocking. Figure 2.5. LVL joist floor with decking from offsite produced elements. LVL Handbook Europe 53
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