Freyssi Flat Jacks serve as indispensable tools for civil and structural engineers, providing a reliable solution for applications demanding controlled large forces. These jacks are invaluable in addressing both unforeseen challenges and new construction projects, offering detailed guidelines regarding bearing area, access gaps, tandem usage, shear resistance, and inlet/vent positioning. Operating at 150 bar, they guarantee low bearing pressures, precise control, and versatility across structural lifting, underpinning, and seismic isolation tasks. With benefits such as known forces, minimal height requirements, and adaptability, Freyssi Flat Jacks effectively address the complex engineering demands of modern projects.