Eurotec catalogue fastening technology Page 285
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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] Fla,Rk [kN] Steel / wood shearing Fla,Rk [kN] Fla,Rk [kN] αAD= 0° αAD= 90° α= 0° α=90° αET= 90° αET= 0° t [mm] Fla,Rk [kN] Fla,Rk [kN] α= 0° α= 90° 8,0 x 420 14,5 300 100 8,44 2,52 4,13 3,50 3,50 4,13 3 5,60 4,98 8,0 x 440 14,5 300 100 8,44 2,52 4,13 3,50 3,50 4,13 3 5,60 4,98 8,0 x 460 14,5 300 100 8,44 2,52 4,13 3,50 3,50 4,13 3 5,60 4,98 8,0 x 480 14,5 300 100 8,44 2,52 4,13 3,50 3,50 4,13 3 5,60 4,98 8,0 x 500 14,5 300 100 8,44 2,52 4,13 3,50 3,50 4,13 3 5,60 4,98 8,0 x 550 14,5 300 100 8,44 2,52 4,13 3,50 3,50 4,13 3 5,60 4,98 8,0 x 600 14,5 300 100 8,44 2,52 4,13 3,50 3,50 4,13 3 5,60 4,98 10,0 x 100 17,8 40 60 6,48 3,63 5,73 4,37 5,73 4,37 3 6,78 5,81 10,0 x 120 17,8 50 70 7,13 3,63 6,07 4,87 6,07 4,87 3 6,94 5,97 10,0 x 140 17,8 40 100 10,26 3,63 5,73 4,37 5,73 4,37 3 7,72 6,76 10,0 x 160 17,8 60 100 10,26 3,63 6,07 5,10 6,07 5,10 3 7,72 6,76 10,0 x 180 17,8 80 100 10,26 3,63 6,07 5,10 6,07 5,10 3 7,72 6,76 10,0 x 200 17,8 100 100 10,26 3,63 6,07 5,10 5,10 6,07 3 7,72 6,76 10,0 x 220 17,8 120 100 10,26 3,63 6,07 5,10 5,10 6,07 3 7,72 6,76 10,0 x 240 17,8 140 100 10,26 3,63 6,07 5,10 5,10 6,07 3 7,72 6,76 10,0 x 260 17,8 160 100 10,26 3,63 6,07 5,10 5,10 6,07 3 7,72 6,76 10,0 x 280 17,8 180 100 10,26 3,63 6,07 5,10 5,10 6,07 3 7,72 6,76 10,0 x 300 17,8 200 100 10,26 3,63 6,07 5,10 5,10 6,07 3 7,72 6,76 10,0 x 320 17,8 220 100 10,26 3,63 6,07 5,10 5,10 6,07 3 7,72 6,76 10,0 x 340 17,8 240 100 10,26 3,63 6,07 5,10 5,10 6,07 3 7,72 6,76 10,0 x 360 17,8 260 100 10,26 3,63 6,07 5,10 5,10 6,07 3 7,72 6,76 10,0 x 380 17,8 280 100 10,26 3,63 6,07 5,10 5,10 6,07 3 7,72 6,76 10,0 x 400 17,8 300 100 10,26 3,63 6,07 5,10 5,10 6,07 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). 7,72 6,76 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. 285
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