Steel Buildings in Europe

Title A.6 Worked Example – Bolted connection of an angle brace in tension to a gusset plate 2 of 6 4 – 99 Common practice is to minimize the eccentricity between the bracing member and the column axis. The gusset plate is welded to the column web and to the base plate using double fillet welds (see Figure A.14). Although there is some eccentricity in order to avoid the anchor bolt on the axis of the column, this is better than the bracing being on the plane of the column flange. 6.1.1. Main joint data Configuration Angle to gusset plate welded to a column web Column HEB 300, S275 Bracing 120 × 80 × 12 angle, S275 Type of connection Bracing connection using angle to gusset plate and non-preloaded bolts Category A: Bearing type Gusset plate 250  300  15, S275 Bolts M20, class 8.8 Welds Gusset plate to column web: fillet weld, a = 4 mm (see 6.2.4). Gusset plate to base plate: fillet weld, a = 4 mm (see 6.2.4). 6.1.2. Column HEB 300, S275 Depth h c = 300 mm Width b c = 300 mm Thickness of the web t w,c = 11 mm Thickness of the flange t f,c = 19 mm Fillet radius r = 27 mm Area A c = 149,1 cm 2 Second moment of area I y = 25170 cm 4 Depth between fillets d c = 208 mm Yield strength f y,c = 275 N/mm 2 Ultimate tensile strength f u,c = 430 N/mm 2