5. A tension members of roof has a length of 7.6 m and is stressed in tension by a dead load of 178 kN and a live load of 268 kN. The tension members needs some amount of rigidity. Assumed A36 steel is used and there is two lines of bolts in each flange (at least three in a line). A325 bolts 20 mm in a bearing type connection are required to developed the full capacity of the member. If additional axial tension of 50 kN produced by the wind load, design a W section. Assume diameter of hole is 22 mm Section W6x20 W5x 18 W8x 17 Area (mm²) 3794 3503 3232 d (mm) 157 130 200 tf (mm) 9.32 10.67 7.82 bf (mm) 152.9 127.6 133.4 rx (mm) 67.56 54.86 85.34 ry (mm) 38.55 32.51 30.99
5. A tension members of roof has a length of 7.6 m and is stressed in tension by a dead load of 178 kN and a live load of 268 kN. The tension members needs some amount of rigidity. Assumed A36 steel is used and there is two lines of bolts in each flange (at least three in a line). A325 bolts 20 mm in a bearing type connection are required to developed the full capacity of the member. If additional axial tension of 50 kN produced by the wind load, design a W section. Assume diameter of hole is 22 mm Section W6x20 W5x 18 W8x 17 Area (mm²) 3794 3503 3232 d (mm) 157 130 200 tf (mm) 9.32 10.67 7.82 bf (mm) 152.9 127.6 133.4 rx (mm) 67.56 54.86 85.34 ry (mm) 38.55 32.51 30.99
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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