Steel Buildings in Europe

Title A.6 Worked Example – Bolted connection of an angle brace in tension to a gusset plate 3 of 6 4 – 100 6.1.3. Angle 120 × 80 × 12, S Depth h ac = 120 mm Width b ac = 80 mm Thickness of the angle t ac = 12 mm Fillet radius r 1 = 11 mm Fillet radius r 2 = 5,5 mm Area A ac = 22,7 cm 2 Second moment of area I y = 322,8 cm 4 Yield strength f y,ac = 275 N/mm 2 Ultimate tensile strength f u,ac = 430 N/mm 2 6.1.4. Gusset plate 250  300  15, S275 Depth h p = 300 mm Width b p = 250 mm Thickness t p = 15 mm Yield strength f y,p = 275 N/mm 2 Ultimate tensile strength f u,p = 430 N/mm 2 Direction of load transfer (1) Number of bolt rows n 1 = 3 Angle edge to first bolt row e l = 50 mm Pitch between bolt rows p l = 80 mm Direction perpendicular to load transfer (2) Number of lines of bolts n 2 = 1 Angle attached leg edge to bolt line e 2 = 80 mm 6.1.5. Bolts M20, 8. Total number of bolts ( 1 2 n n n   ) n = 3 Tensile stress area A s = 245 mm 2 Diameter of the shank d = 20 mm Diameter of the holes d 0 = 22 mm Diameter of the washer d w = 37 mm Yield strength f yb = 640 N/mm 2 Ultimate tensile strength f ub = 800 N/mm 2