Eurotec catalogue fastening technology Page 293
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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 18,0 30 50 4,26 3,24 3,89 3,08 3,89 3,08 3 4,61 3,94 8,0 x 100 18,0 40 60 5,33 3,24 4,31 3,48 4,31 3,48 3 4,83 4,20 8,0 x 120 18,0 60 60 5,33 3,24 4,31 3,68 4,31 3,68 3 4,83 4,20 8,0 x 140 18,0 40 100 8,44 3,24 4,31 3,48 4,31 3,48 3 5,60 4,98 8,0 x 160 18,0 60 100 8,44 3,24 4,31 3,68 4,31 3,68 3 5,60 4,98 8,0 x 180 18,0 80 100 8,44 3,24 4,31 3,68 4,31 3,68 3 5,60 4,98 8,0 x 200 18,0 100 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 220 18,0 120 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 240 18,0 140 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 260 18,0 160 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 280 18,0 180 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 300 18,0 200 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 320 18,0 220 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 340 18,0 240 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 360 18,0 260 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 380 18,0 280 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 400 18,0 300 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 420 18,0 320 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 440 18,0 340 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 460 18,0 360 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 480 18,0 380 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 500 18,0 400 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 550 18,0 450 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 8,0 x 600 18,0 500 100 8,44 3,24 4,31 3,68 3,68 4,31 3 5,60 4,98 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). 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. 293
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