A pipe column is braced to prevent bending and buckling. It is subjected to a compressive load of 1000kN. It’s E = 200 GPa. length = 4m and outside diameter is 250mm. What is the required thickness of...

A pipe column is braced to prevent bending and buckling. It is subjected to a
compressive load of 1000kN. It’s E = 200 GPa. length = 4m and outside diameter is
250mm. What is the required thickness of the column if the allowable compressive
stress is 117 MPa?