Under sponsorship of the American Institute of Steel Construction, test equipment has been developed in which various desired combinations of axial load and end moments may be applied to metal columns.Lengths of 8, 12, and 16 feet may be accommodated in the apparatus, which is designed to test steel columns up to an 8WF40 rolled section size.Axial load is applied by a universal testing machine of 800,000 pound capacity.The end moments are applied separately through lever arms with tension-compression hydraulic jacks mounted in series with dynamometers which measure the thrust.