2. A tension member has a span of 9 m and carries a tensile load of 981 kN. The member is to have two lines of rivets in each flange for the 20 mm rivets with standard diameter of 21 mm hole dimension with at least 3 rivets in a line. Use a 36 W section. Neglect the weight of member Fy = 248 MPa, Fu = 400 MPa. Possible Sections: W 250 x 60 W 250 x 54 W 250 x 67 A = 7613 mm² d = 2985 A = 6839 mm² A = 8516 mm? d = 306 d = 301.50 ry = 49.3 mm ry = 39.4 mm ry = 49.3 mm tf = 13.10 mm tf = 13.72 mm tf = 14.63 mm bf = 203.2 mm bf = 166.75 mm bf = 204.27 mm

Given the truss shown, solve the following. Use A36 steel and assume there are two lines of three 19 mm bolts in each flange. Hole diameter is assumed to be three mm more than the bolt diameter. Neglect the weight of the section. a.What is the capacity of member CG? b. Design member CG using a W section. c. What is the tensile capacity of the section for CG based on gross area? The following W Section were considered for the design: W10x33 W14x38 W8x40 W16x36 W10x39 W8x13 189 KN 1.50 HL B 145 KN 1.50 E + 137 KN 121 KN -3.00 + 12.00 3.00 154 KN + W4x13 W6x9 W10x12 200 KN -1.50 1.50 1 030 T 1.20 +2.40 0.60 L i 0.30