Eurotec catalogue fastening technology Page 212
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Timber engineering KonstruX ST with countersunk head and drill point 8,0 and 10,0 mm: timber/timber joints Dimensions Tension connection Characteristic value of the joint‘s loadbearing capacity Rax,k bzw. Rk acc. to ETA-11/0024 d1 x L [mm] A [mm] B [mm] Rax,k a) - [kN] Rk a) - [kN] Rax,k a) - [kN] Rk a) - [kN] Rax,k a) - [kN] Rax,k a) - [kN] αA= 90° αB= 90° αA= 90° αB= 45° α= 45° Rk a) - [kN] αA= 45° αB= 90° 8,0 x 155 60 60 6,65 4,70 6,65 4,70 6,65 4,70 6,65 4,70 8,0 x 195 80 80 7,76 5,49 7,76 5,49 7,76 5,49 7,76 5,49 7,17 8,0 x 220 80 100 10,13 7,17 10,13 7,17 10,13 7,17 10,13 8,0 x 245 100 100 9,82 6,95 9,82 6,95 9,82 6,95 9,82 6,95 8,0 x 270 100 120 12,19 8,62 12,19 8,62 12,19 8,62 12,19 8,62 8,0 x 295 120 100 11,88 8,40 11,88 8,40 11,88 8,40 11,88 8,40 8,0 x 330 120 140 15,20 10,75 15,20 10,75 15,20 10,75 15,20 10,75 8,0 x 375 140 140 16,79 11,87 16,79 11,87 16,79 11,87 16,79 11,87 8,0 x 400 160 140 16,48 11,65 16,48 11,65 16,48 11,65 16,48 11,65 8,0 x 430 160 160 19,32 13,66 19,32 13,66 19,32 13,66 19,32 13,66 8,0 x 480 180 180 21,38 15,12 21,38 15,12 21,38 15,12 21,38 15,12 10,0 x 220 80 100 12,33 8,72 12,33 8,72 12,33 8,72 12,33 8,72 10,0 x 245 100 100 11,95 8,45 11,95 8,45 11,95 8,45 11,95 8,45 10,0 x 270 100 120 14,83 10,49 14,83 10,49 14,83 10,49 14,83 10,49 10,0 x 300 120 120 15,03 10,63 15,03 10,63 15,03 10,63 15,03 10,63 10,0 x 330 120 140 18,49 13,07 18,49 13,07 18,49 13,07 18,49 13,07 10,0 x 360 140 140 18,69 13,21 18,69 13,21 18,69 13,21 18,69 13,21 10,0 x 400 160 140 20,04 14,17 20,04 14,17 20,04 14,17 20,04 14,17 10,0 x 450 160 180 25,81 18,25 25,81 18,25 25,81 18,25 25,81 18,25 10,0 x 500 180 200 28,31 20,02 28,31 20,02 28,31 20,02 28,31 20,02 10,0 x 550 200 200 30,82 21,79 30,82 21,79 30,82 21,79 30,82 21,79 10,0 x 600 220 220 33,00 23,33 33,00 23,33 33,00 23,33 33,00 23,33 Calculation according to ETA-11/0024. Wood density ρk= 380 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. 212 Rk a) - [kN]
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