The Ingenieur Büro Stengel ("Ingenieur Büro" is German for "Engineering Office") company was started by Werner Stengel. Simply put, Werner Stengel has been involved with more roller coasters than anyone. Stengel is involved with so many roller coasters because he does not build or sell the roller coasters, but works with most of the manufacturers that do. The type of work provided by Stengel varies from client to client and project to project. These services include design, layout and calculations for every aspect of roller coasters as well as other amusement rides. It is beyond the scope of the database to detail these services on a ride-by-ride basis.