864CHAPTER 11ColumnsSolution 11.4-2Steel pipe column(1) PINNED-PINNEDPcr±p2EIL2±62.2 kN;I±p64(d42²d41)±43.22*103mm4L±1.2 md2±40 mmd1±36 mmE±210 GPa(2) FIXED-FREE(3) FIXED-PINNED(4) FIXED-FIXEDPcr±4p2EIL2±249 kN;Pcr±2.046p2EIL2±127 kN;Pcr±p2EI4L2±15.6 kN;Problem 11.4-3A wide-flange steel column (E±30 ³106psi) of W 12 ³87 shape (see figure) has length L±28 ft. It is supported only at the ends and may buckle in any direction.Calculate the allowable load Pallowbased upon the critical load with a factor of safety n±2.5. Consider the following end conditions: (1) pinned-pinned, (2) fixed-free, (3) fixed-pinned, and (4) fixed-fixed.
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This note was uploaded on 12/22/2011 for the course MEEG 310 taught by Professor Staff during the Fall '11 term at University of Delaware.