Introduction
"I always start with squares", said Louis Kahn. A quick look at the floors of some of his most famous buildings, from the bathrooms of Jewish Community Center in Trenton, the National Assembly of Bangladesh will be enough to confirm this observation. Sometimes the whole building is a square (the Phillips Exeter Academy Library, Exeter, New Hampshire), but more often the project is configured as a cluster of squares (the towers of the Richards Medical Research Building in Philadelphia , Pa.).