I want to make 4 vertical pipe stands for supporting large electrical motors weighing up to 20 tons. This is only a static load just supporting the motor on the factory floor so that the motor repairs can be done from underneath.
The pipes will be 10 mm thick seamless pipes of 150 mm OD x 130 mm ID x 2000 mm high. They will have welded top and bottom square bases of 300 mm x 300 mm x 25 mm thick for stability. By my calculation, the axial pressure on the pipe wall thickness comes to about 114 kg/sq cm for each leg for a weight of 20 tons. Is this correct?
Is this load within the safe limits of steel yield stress and the hoop stress?