Because of the axial compression of the deck in a cable stayed bridge, buckling is a concern. In this simple bridge, each pylon carries one frontstay and one backstay as shown. There is no horizontal force between the pylon and the deck. Take all stays to have equal tensions. Let I = 0.2 m4 for the reinforced concrete girder that forms the deck and E = 40 GPa. Determine the cable tension at which the segment of the girder between the cable anchorage points would buckle. Take the dimensions to be
