Question 11.5: A steel wide-flange column of HE 320A shape (Fig. 11-29a) is...
A steel wide-flange column of HE 320A shape (Fig. 11-29a) is pin supported at the ends and has a length of 7.5 m. The column supports a centrally applied load P_{1}=1800 \mathrm{~kN} and an eccentrically applied load P_{2}=200 \mathrm{~kN} (Fig. 11-29b). Bending takes place about axis 1–1 of the cross section, and the eccentric load acts on axis 2–2 at a distance of 400 mm from the centroid C.
(a) Using the secant formula, and assuming E = 210 GPa , calculate the maximum compressive stress in the column.
(b) If the yield stress for the steel is \sigma_{Y}=300 \mathrm{~MPa} , what is the factor of safety with respect to yielding?
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