Paul211

Hi all. Im looking to self build a frame for a concrete base. I will then call in a company to pump the required pour for the job. It will need to sustain the weight of heavy ex Army tanks around 60Tons. With the ability to build a workshop on top at a later date. What depth sub base? Thickness of rebar for base. And depth of pour would I need?? Am am I thinking way out my ability on this project?? regards Paul.