Sketches, 3D VISUALISATION, DRAWINGs...
Often the first stage of any project is to develop conceptual ideas for the proposed design. Hand sketches can be a quick and efficient way to communicate ideas.
Sometimes the final design for a project might need 3D images to fully realize a concept. These can be drawn in a virtual environment to provide an accurate model of the proposals.
Schemes are then developed from initial concept sketches to provide more detailed drawings.