The beam is fabricated by attaching a C 180 x 15 channel to a W 250 x 18 shape with a 15 mm Ø rivets as shown. The maximum shear force in the beam is 65 kN. 5.3 Prop. of C 180 x 15 channel A = 1850 mm² Ix = 8.860 x 106 mm4 N.A. tw = 5.3 mm ly= 0.405 x 106 mm x = 13.8 mm 251 Prop. of W 250 x 18 Ix = 22.4 x 106 mm A = 2270 mm² bf=101 mm d = 251 mm 15.3 tw = 4.8 mm tf= 5.3 mm 101 1. Determine the moment of inertia at the neutral axis of the beam. 36.76x106 mm4 2. Determine the maximum allowable spacing of the rivets if the working stress is 100 MPa in shear. S = 167.61 mm 3. Determine the corresponding maximum bearing stress exerted by the rivets. Sb= 222.28 MPa

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Chapter2: Loads On Structures
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The beam is fabricated by attaching a C 180 x 15 channel to a W 250 x 18 shape with a 15 mm Ø
rivets as shown. The maximum shear force in the beam is 65 kN.
5.3
Prop. of C 180 x 15 channel
A = 1850 mm²
Ix = 8.860 x 106 mm4
tw = 5.3 mm
ly = 0.405 x 106 mmª
N.A.
x = 13.8 mm
251
Prop. of W 250 x 18
A = 2270 mm²
bf=101 mm
Ix = 22.4 x 106 mm4
d = 251 mm
15.3
tw = 4.8 mm
tf= 5.3 mm
101
1. Determine the moment of inertia at the neutral axis of the beam. 36.76x106 mmª
2. Determine the maximum allowable spacing of the rivets if the working stress is 100 MPa in shear. S = 167.61 mm
3. Determine the corresponding maximum bearing stress exerted by the rivets. Sb= 222.28 MPa
Transcribed Image Text:The beam is fabricated by attaching a C 180 x 15 channel to a W 250 x 18 shape with a 15 mm Ø rivets as shown. The maximum shear force in the beam is 65 kN. 5.3 Prop. of C 180 x 15 channel A = 1850 mm² Ix = 8.860 x 106 mm4 tw = 5.3 mm ly = 0.405 x 106 mmª N.A. x = 13.8 mm 251 Prop. of W 250 x 18 A = 2270 mm² bf=101 mm Ix = 22.4 x 106 mm4 d = 251 mm 15.3 tw = 4.8 mm tf= 5.3 mm 101 1. Determine the moment of inertia at the neutral axis of the beam. 36.76x106 mmª 2. Determine the maximum allowable spacing of the rivets if the working stress is 100 MPa in shear. S = 167.61 mm 3. Determine the corresponding maximum bearing stress exerted by the rivets. Sb= 222.28 MPa
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