This lecture covers topics such as hydraulic soil rupture, steady-state calculations around structures, and groundwater lowering around excavations. It also delves into the Renard hydraulic calculations for groundwater lowering, including control methods, spatial distribution of wells, and the calculation of total pumping flow. The lecture further explores the principles of Renard hydraulic calculations for different soil conditions, the impact of impermeable layers, and the solid fox method for addressing soil bearing capacity issues.