Title: Listeskrue 3,5x45.pdf
The characteristic lateral load-carrying capacities and the characteristic axial withdrawal capacities of ”fischer Power-Fast” and “fischer construction screws” screws should be used for designs in accordance with Eurocode 5 or an appropriate national code.Pointside penetration length of the threaded part must be ef > 4∙d, where d is the outer thread diameter of the screw. For the fixing of rafters, point side penetration must be at least 40 mm, ef > 40 mm.fh,k0,082 k 2,5 cos (1 0,01 d)    2 sin   2[N/mm²]Where k d characteristic timber density [kg/m³]; outer thread diameter [mm]; angle between screw axis and grain direction.The embedding strength for screws arranged parallel to the plane of cross laminated timber, independent of the angle between screw axis and grain direction, 0° ≤  ≤ 90°, may be calculated from:h,kf20 d  0,5[N/mm²]ETA’s for structural members may be considered if applicable.Where douter thread diameter [mm]