Abstract

Achieving efficiency through material minimization remains a central challenge for architects and engineers. Designing longer spans, taller structures, and larger enclosures, all while limiting material use, demands a disciplined approach to geometry, stiffness, and load transfer. As resource efficiency becomes increasingly critical, the integrated design of lightweight structure provides a robust framework for addressing this challenge.

Lightweight structures – such as cable nets, grid shells, and membrane systems – enable expressive, efficient, and innovative designs. Their performance, however, depends on the precise resolution of geometry, fabrication, and construction. Because these systems achieve stiffness and stability through geometric form and prestress, even minor geometric deviations or unintended flexibility in supports can significantly affect load distribution and service behavior. As a result, designers need a wider sense of “design constraint” that includes form finding, load-path clarity, fabrication tolerances, and local and global stiffness. Successful design therefore requires early and continuous collaboration among architectural, structural, construction and fabrication disciplines.

This lecture presents the principles of integrated design for lightweight architecture, demonstrating how coordinated workflows enhance efficiency, resolve conflicts, and improve constructability. Case studies, including large-scale cable nets and grid shells to small-scale glass structures, illustrate how geometry informs both architectural expression and structural behavior.