Extensive Definition
In architecture, intercolumniation is the spacing
between columns in a colonnade, as measured at the
bottom of their shafts. In classical,
Renaissance,
and Baroque
architecture, intercolumniation was determined by a system
devised by the 1st century
BC Roman
architect Vitruvius.
Vitruvius compiled standard intercolumniations for the three
classical
Greek orders, expressed in terms of the column diameter,