4. STRUCTURAL DESIGN OF LVL STRUCTURES Figure 4.14. Example of an LVL beam supported on an LVL sole plate. Effective contact area is increased by 15 mm in the edgewise direction on the beam and separately by 60 mm (2x30 mm) in the length direction and 15mm in width direction on the sole plate. LVL beam Product type Beam thickness b [mm] Support length l [mm] Increase in actual contact length l1 [mm] Effective contact area Aef = b∙(l +l1) [mm2] Compression strength fc,90,edge,k [N/mm2] kc,90 [-] Characteristic bearing capacity Fc,k = Aef ∙ kc,90 ∙ fc,90,edge,k [kN] LVL 48 P 51 50 15 3 315 6,0 1,0 20 LVL 36 C 51 50 15 3 315 9,0 1,0 30 LVL or solid wood sole plate Product type Contact width b [mm] Contact length l [mm] Increase in actual contact length parallel l1 and perpendicular l2 [mm] Effective contact area Aef = b∙(l+l1) + l ∙2∙l2 [mm2] Compression strength fc,90,edge,k [N/mm2] kc,90 [-] Characteristic bearing capacity Fc,k = Aef ∙ kc,90 ∙ fc,90,edge,k [kN] LVL 48 P or 36 C 50 51 l1 =30, l2 =15 6 315 2,2 1,4 19,5 LVL 48 P or 36 C of pine 50 51 l1 =30, l2 =15 6 315 3,3 1,4 29 C24 solid wood 50 51 l1 =30, l2 =0 5 550 2,5 1,25 17,3 Figure 4.14 LVL Handbook Europe 125
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