ABSTRACT
The principal concern of modular coordination is with the ratios of the lengths of components in either one of the two or three directions of the grid. Some of the proportional systems have incidental properties useful in modular coordination, and vice versa. This chapter illustrates some of the various relationships which exist between modules, grids, ratios of lengths, and proportions of rectangles. In the series of ratios proposed in theoretical treatises, and in those found employed in actual building practice, different geometric series occur again and again, sometimes fragments only of one series, sometimes a doubling and a tripling series or more complex combinations, used together. Le Corbusier’s proportional system, the Modulor, consists of two interrelated series of preferred dimensions.
