I am looking for some insight with a problem I have. I am trying to design a foundation that is partially under the current water table. It is a hollow rectangle that is 30 m long, 11 m wide and 9 m high with a wall thickness of 0.5 m, it is attached to a triangular shape foundation that is 35 m long, 11 m wide and 9 m high with a wall thickness of 0.5 m. The structure sticks out 0.5 m above the current ground level. I was able to calculate the volume of the concrete structure which is 890.27 m^3 Using the water table information we found that the volume of water displaced is 4076.325 m^3 From this I know I need to calculate the buoyancy force and try to get neutral buoyancy so it does not move. I am just wondering how to go about this. Should we increase the dimensions of the structure (thickness is the only thing that we can think or altering) or consider using anchors or bracing to equal out the forces.