5. Two C310x45 channels are latticed together so they have equal moments of inertia about the principal axes. Determine the minimum length of column having this section, assuming pinned ends, E = 200 GPa, and a proportional limit of 240 MPa. What safe load will the column carry for the length of 12 m with a factor of safety of 2.5? For C310x45, take 1 = 67.3x10-6 m4 Ans L = 9.89 m, F = 738 kN 6. Repeat problem 5 assuming that one end is fixed and the other hinged.
5. Two C310x45 channels are latticed together so they have equal moments of inertia about the principal axes. Determine the minimum length of column having this section, assuming pinned ends, E = 200 GPa, and a proportional limit of 240 MPa. What safe load will the column carry for the length of 12 m with a factor of safety of 2.5? For C310x45, take 1 = 67.3x10-6 m4 Ans L = 9.89 m, F = 738 kN 6. Repeat problem 5 assuming that one end is fixed and the other hinged.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:5. Two C310×45 channels are latticed together so they have equal moments
of inertia about the principal axes. Determine the minimum length of
column having this section, assuming pinned ends, E = 200 GPa, and a
proportional limit of 240 MPa. What safe load will the column carry for the
length of 12 m with a factor of safety of 2.5?
For C310x45, take I = 67.3x106 mª
6. Repeat problem 5 assuming that one end is fixed and the other hinged.
Ans L = 9.89 m, F = 738 kN
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