This thesis details the creation and development of an experimental setup to test ground effectin the L2000 wind tunnel at KTH. Ground effect is an important aerodynamic phenomenonobserved in areas such as aviation and motorsports. The research includes a comprehen-sive literature study and design process, encompassing analytical calculations, finite elementmethod (FEM) simulations, and computational fluid dynamics (CFD) analyses.The project aimed to develop a sturdy and adjustable structure capable of investigatingground effect, despite various challenges and limitations. Improvements were suggested inareas such as floor length, setup dimensions, and structural rigidity. The study lays a foun-dation for future experimental research on ground effect, providing insights and a frameworkfor ongoing investigations in aeronautics and related fields.