Steel Buildings in Europe

Title A.4 Worked Example – Simply supported, primary composite beam 3 of 13 4 – 83 4.3.1. Geometric data Depth h a = 400 mm Width b = 180 mm Web thickness t w = 8,6 mm Flange thickness t f = 13,5 mm Root radius r = 21 mm Mass 66,3 kg/m Section area A a = 84,46 cm 2 z z y y t f t w b h a Second moment of area about the major axis I y = 23130 cm 4 Elastic section modulus about the major axis W el,y = 1156 cm 3 Plastic section modulus about the major axis W pl,y = 1307 cm 3 Radius of gyration about the minor axis i z = 3,95 cm Modulus of elasticity of steel E a = 210 000 N/mm 2 Yield strength Steel grade S355 The maximum thickness is 13,5 mm < 40 mm, so: f y = 355 N/mm 2 EN 1993-1-1, Table 3.1 Note: The National Annex may impose either the values of f y from Table 3.1 or the values from the product standard. Profiled steel sheeting Thickness of sheet t = 0,75 mm Slab depth h = 140 mm Overall depth of the profiled steel sheeting excluding embossments h p = 58 mm Trapezoidal ribs b 1 = 62 mm b 2 = 101 mm e = 207 mm Connectors Diameter d = 19 mm Overall nominal height h sc = 100 mm Ultimate tensile strength f u = 450 N/mm 2 Number of studs n = 74 per row (Stud at beam mid-span ignored)