These diagrammatic drawings were very important in the conceptual development during the design process of this project.
The objective of this study was not to conclude a single solution, but to provide a selection of suitable scenarios for Terminal expansion. The benefit of bubble diagrams brought a rough understanding of the space in the study and an ability to quickly layout different spatial relationships.
The way I normally tackle the bubble diagrams, as a finished product, is by layout some tracing paper over a CAD drawing of the space in a study. From there I just literally circle the space adding some graphic language to express the relationships between the different areas.
These diagrams were produced by hand and enhanced in Photoshop®, back in 2004 at my time at REID Architecture, London.