Theo van Niekerk & Associates and Ritchie Midgley are civil engineering firms that used Autodesk Revit to streamline collaboration on large projects. Revit's integrated building information modeling allowed changes made in one design to automatically update all other designs. This saved significant time and resources. They used Revit on a taxi holding facility and shopping center project, where Revit's 3D modeling helped secure project approval and address engineering challenges like sloped floors. Revit also reduced drawing creation time compared to traditional 2D CAD tools.