Assistant professor of Interior Design and Architecture, Dr. Tiziana Proietti, recently published her research, “Revisiting the plastic number theory from the perspective of perceptual psychology,” in the Architectural Science Review.
Abstract
Architect Hans van der Laan spent his lifetime studying human perception of proportion. His work led to the development of the plastic number system. In this system every step represents a group of fractions that describe objects of similar sizes. Indeed, each step is defined as the ‘representative size’ of a group of sizes that are perceptually indiscriminate from one another. Over decades of research, Van der Laan conducted a series of experiments to test his system. The clarity with which he approached the perception of proportion provides a suitable ground for testing the plastic number by scientific means. To take the first step in that direction, it is useful to consider Van der Laan’s approach within the context of sensory psychophysics and Gestalt psychology. Highlighting these connections suggests specific directions for future research of the plastic number and opens a new chapter in studies on proportion in architecture.
A project designed by Gibbs College of Architecture faculty member Austin Lightle has been selected for BuildFest 2026, a national art and architecture festival held at the Bethel Woods Center for the Arts in New York, on the historic grounds of the 1969 Woodstock Music Festival.
Two Christopher C. Gibbs College of Architecture alumni are helping shape recommendations that could influence affordable housing design and construction across Oklahoma.
The University of Oklahoma Libraries recently welcomed Carl Siegel as an Architecture Librarian and Archivist and Assistant Professor. In his role, Siegel supports students, faculty and staff across the Gibbs College of Architecture while also serving as archivist for the American School of Architecture Archives.
