Eurotec catalogue fastening technology Strana 218
Nabídka komerčních zákazníků **Nejlépe prodávané z Eurotec
Timber engineering KonstruX ST with cylinder head and drill point 8,0 mm: main/secondary beam joints Dimensions Main / secondary beam connection SB MB SB HSB HMB MB WSB WMB Characteristic value of the joint‘s loadbearing capacity Rk acc. to ETA-11/0024 a2= min. 40 mm, a2,c= min. 24 mm, k= min. 12 mm d1 x L [mm] 8,0 x 245 8,0 x 295 8,0 x 330 8,0 x 375 8,0 x 400 8,0 x 430 8,0 x 480 min. WSB [mm] Pair (n) 80 16,43 1 100 30,66 2 44,16 3 200 min. WMB [mm] 100 min. HMB [mm] 200 m [mm] β° Rv,k a) b) - [kN] 140 min. HSB [mm] 87 45 180 57,21 4 80 17,44 1 32,55 2 46,88 3 180 60,74 4 80 17,44 1 100 32,55 2 46,88 3 100 140 140 220 260 120 140 220 260 104 117 45 45 180 60,74 4 80 17,44 1 32,55 2 46,88 3 100 140 280 160 280 133 45 180 60,74 4 80 17,44 1 32,55 2 46,88 3 100 140 300 160 300 141 45 180 60,74 4 80 17,44 1 32,55 2 46,88 3 180 60,74 4 80 17,44 1 100 32,55 2 46,88 3 60,74 4 100 140 140 320 360 180 180 320 360 180 152 170 45 45 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. b) estimated with an efficient quantity of pairs of screws: n0,9. Please note: These are planning aids. Projects must only be calculated by authorised persons. 218
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