LWALL is an AutoCAD or BricsCAD add-on for 3D reinforcement of L retaining walls. It is a very useful program for designers, automatically generating execution drawings and reinforcement quantity lists for concrete L-type retaining walls. In an interactive way and assisted by a graphic help, the input data are entered. This data will be saved automatically, and can serve as a starting point for a new run. The automatically generated drawings can be printed immediately, with no adjustments required. Drawings and reinforcement quantity lists can be generated for dozens of L walls per day.