Eurotec catalogue fastening technology Page 289
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Wood construction screws Dimensions d1 x L [mm] dk AD ET [mm] [mm] [mm] Extraction resistance Head pull-through resistance Fax,90,Rk [kN] Fax,head,Rk [kN] Wood / wood shearing Fla,Rk [kN] α= 0° Fla,Rk [kN] Steel / wood shearing Fla,Rk [kN] Fla,Rk [kN] αAD= 0° αAD= 90° α=90° αET= 90° αET= 0° t [mm] Fla,Rk [kN] Fla,Rk [kN] α= 0° α= 90° 8,0 x 80 22,0 30 50 4,26 5,81 4,14 3,34 4,14 3,34 3 4,56 3,94 8,0 x 100 22,0 40 60 5,33 5,81 4,83 4,01 4,83 4,01 3 4,83 4,20 8,0 x 120 22,0 50 70 5,86 5,81 4,95 4,32 4,95 4,32 3 4,96 4,34 8,0 x 140 22,0 40 100 8,44 5,81 4,95 4,13 4,95 4,13 3 5,60 4,98 8,0 x 160 22,0 60 100 8,44 5,81 4,95 4,32 4,95 4,32 3 5,60 4,98 8,0 x 180 22,0 80 100 8,44 5,81 4,95 4,32 4,95 4,32 3 5,60 4,98 8,0 x 200 22,0 100 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 220 22,0 120 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 240 22,0 140 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 260 22,0 160 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 280 22,0 180 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 300 22,0 200 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 320 22,0 220 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 340 22,0 240 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 360 22,0 260 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 380 22,0 280 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 400 22,0 300 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 420 22,0 300 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 440 22,0 300 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 460 22,0 300 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 480 22,0 300 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 500 22,0 300 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 550 22,0 300 100 8,44 5,81 4,95 4,32 4,32 4,95 3 5,60 4,98 8,0 x 600 22,0 300 100 8,44 5,81 4,95 4,32 4,32 4,95 3 Calculation according to ETA-11/0024. Wood density ρk= 350 kg/m³. All mechanical values provided should be viewed as subject to the assumptions that have been made and represent example calculations. All values are calculated minimum values and are subject to typographical and printing errors. a) The characteristic values of the load-bearing capacity Rk cannot be treated as equivalent to the max. possible load (the max. force). Characteristic values of the load-bearing capacity Rk should be reduced to dimensioning values Rd with regard to the usage class and class of the load duration: Rd= Rk · kmod / γM. The dimensioning values of the load-bearing capacity Rd should be contrasted with the dimensioning values of the loads (Rd ≥ Ed). 5,60 4,98 Example: Characteristic value for constant load (dead weight) Gk= 2,00 kN and variable load (e. g. snow load) Qk= 3,00 kN. kmod= 0,9. γM= 1,3. → Dimensioning value of the load Ed= 2,00 · 1,35 + 3,00 · 1,5= 7,20 kN. The load-bearing capacity of the joint is therefore considered to have been demonstrated if Rd ≥ Ed. → min Rk= Rd · γM / kmod i.e. the characteristic minimum value is calculated based on: min Rk= Rd · γM / kmod → Rk= 7,20 kN · 1,3/0,9= 10,40 kN → comparison with table values. Please note: These are planning aids. Projects must only be calculated by authorised persons. 289
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