A W410×100 structural steel wide-flange section is used as a horizontal lower chord member of a bridge truss. It is subjected to a tensile load of 1200 kN. The orientation of the member is such that the Y-Y axis (the weak axis) is horizontal.
Calculate the maximum and minimum combined stresses due to the direct axial load and the member's own weight. The panel length (length of the member) is 8 m.