Jackwell *** Pump house design

Hi everyone,

can anyone please tell me the procedure for jackwell *** pump house design. I have created nodes and beams for the architechtural drawing and am confused with the foundation part as the structure will be  10m below ground level, and i need to give retaining wall all around the structure but i dont know how to consider the hydraulic loadings. can anyone please suggest me how to tackle with this?

Thank you

regards, Mp