Unlike complex software, T5 uses a simple logic: Draw walls -> Insert windows/doors -> Add furniture from library -> Click "Render." The UI is dated, but the logic is brutally efficient for residential projects.
Start with a standard AutoCAD (DWG) floor plan. T5 reads the walls and instantly generates a 3D volume. From there, you simply "paint" materials onto surfaces. No need to rebuild the geometry from scratch. intericad t5