Base Plate Thickness Result Issue in RAM

Hi There,

I designed some columns in Ram SS for a particular model. However, the software has specified a baseplate thickness of about 1500mm even though the ultimate load on the base plate summed up to about 109kN.  Is there something I might be missing? I have checked the model and my input data look fine to me. I have attached a screen shot of the result. If any more information is required, I will be happy to provide.

Thank you