Steel Buildings in Europe

Part 5: Joint Design 5 - 90 Check for long joint: L j is the joint length from EN1993-1-8 [1] , § 3.8 If L j > 15 d the design shear resistance F v,Rd should be reduced by multiplying it by a reduction factor β Lf . d L d 200 15 1 j Lf     Bearing resistance F b,Rd is the bearing resistance of a single bolt F b,Rd = M2 u,p p 1 b   dt f k [EN 1993-1-8 Table 3.4] Note: If the thickness of the column flange is less than the thickness of the flange cover plates, then the bearing resistance of the column flange should also be checked. For end bolts:  b = min         ; 1, 0 ; 3 u,p ub 0 1 f f d e For inner bolts:  b = min          ; 1, 0 ; 4 1 3 u,p ub 0 1 f f d p For edge bolts: k 1 = min        2,8 1, 7; 2,5 0 2 d e For inner bolts: k 1 = min        1, 4 1, 7; 2,5 0 2 d p  M2 is the partial factor for plate in bearing Resistance of preloaded bolts: F Ed ≤ F s,Rd For joints designed to be non-slip under factored loads. F s,Rd is the design slip resistance = p,C M3 s fs F k n   [EN 1993-1-8 §3.9.1(1)]