Title: Listeskrue 3,5x45.pdf
efnFor inclined screws:ef ≥ min (4∙d/sin ; 20∙d)For screws penetrating more than one layer of cross laminated timber, the different layers may be taken into account proportionally.Characteristic head pull-through parameter for screws with head diameter ≤ 21 mm in connections with timber and with wood-based panels with thicknesses above 20 mm: fhead,k = 12 N/mm²The axial withdrawal capacity is limited by the head pull- through capacity and the tensile strength of the screw.For axially loaded screws in tension, where the external force is parallel to the screw axes, the rules in EN 1995- 1-1, 8.7.2 (8) should be applied.Characteristic head pull-through parameter for screws with head diameter 21 mm < dh ≤ 35 mm in connections with timber and with wood-based panels with thicknesses above 20 mm: fhead,k = 10 N/mm²