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

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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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
W 6 x 20
W 5x 18
W8x17
Area (mm)
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
Transcribed Image Text: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 W 6 x 20 W 5x 18 W8x17 Area (mm) 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
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