884CHAPTER 11ColumnsProblem 11.6-7A steel column () with pinned ends is constructed of W 1060 wide-flange shape (see figure). The column is long.The resultant of axial loads acting on the column is a force acting with eccentricity (a) If , determine the maximum compressive stress in the column.(b) Determine the allowable load Pallowif the yield stress is±Y²42 ksi and the factor of safety with respect to yielding of the material is ²2.5.nsmaxP²120 ke²2.0 in.P24 ft*E²30*103ksiSolution 11.6-7Steel column with pinned endsW 10 ³60 wide-flange shape.(a) MAXIMUM COMPRESSIVE STRESS()Secant formula (Eq. 11-59):(1)smax²PAc1+ecr2secaL2rAPEAbdP²120 kLr²65.42ecr2²0.5273r2²IA²19.38 in.2r²4.402 in.c²d2²5.11 in.A²17.6 in.2I²341 in.4d²10.22 in.e²2.0 in.L²24 ft²288 in.E²30*103ksiSubstitute into Eq. (1): (B)ALLOWABLE LOADSubstitute into Eq. (1):Solve numerically: Pallow²PY/n²
This is the end of the preview. Sign up
access the rest of the document.