Steel Buildings in Europe

Part 5: Joint Design 5 – 9 2.2.4 Bolt group resistance e e 1 1 2 2 1 1 1 Check these bolts in shear under concentric load 2 Supporting beam 3 Supporting column Basic requirement: V Ed  F Rd F Rd is the resistance of the bolt group [EN 1993-1-8 ,§3.7(1)] If ( F b,Rd ) max  F v,Rd then F Rd =  F b,Rd If ( F b,Rd ) min  F v,Rd  ( F b,Rd ) max then F Rd = n s ( F b,Rd ) min If F v,Rd < ( F b,Rd ) min then F Rd = 0,8 n s F v,Rd 2.2.4.1 Shear resistance of bolts F v,Rd is the shear resistance of one bolt F v,Rd = M2 v ub   f A [EN 1993-1-8, Table 3.4] where:  v = 0,6 for 4.6 and 8.8 bolts = 0,5 for 10.9 bolts A is the tensile stress area of the bolt, A s  M2 is the partial factor for resistance of bolts 2.2.4.2 Bearing resistance F b,Rd = M2 u,p p 1 b   dt f k [EN 1993-1-8 Table 3.4] where:  M2 is the partial factor for plate in bearing  For end bolts (parallel to the direction of load transfer)  b = min         ; 1,0 ; 3 u,p ub 0 1 f f d e