Reports regarding this project were published internationally in magazines and books since 1948. These were 19-meter long cantilevers supporting vaulted shells with a thickness of 4 centimeters. In 1947, González Zuleta designed stands and roofing for the baseball stadium for the city of Cartagena, Colombia. In this communication, documented sources will be utilized to examine contributions light roofs built with thin concrete shells in three of the most important projects by the engineer Guillermo González Zuleta (1916-1995), placing them within the context of a larger local trend of membrane construction in the period. Strong formal interest in these systems has been accompanied by constructive searches based on local circumstances. The introduction and development of thin concrete shell roofs in Colombia was particularly dynamic during the 1940s and 1950s. This paper showcases the application of engineering principles and material optimization, which results in a slender, lightweight and efficient structures. It also discusses the technological advancements of the geometric form and the structural principles derived from various case studies. The research would investigate the effect of minor alterations to the geometry (such as curvature) and their effect on structural efficiency. To understand the impact of geometries on their structural behavior, the research analyses various geometric typologies, evolution, structural classifications affecting their stability. This process, when exercised by a designer/ architect from the pre-design stage, forms a holistic design approach. Hence, there is a need to develop a process for designing the built mass/ geometry, which is not only governed by functional or aesthetic requirements, but also through strong principles derived from the physical forces and thus creating an efficient solution. Recent design trends indicate that the structural inputs are taken during the post-design stage (after finalizing the concept and geometric form by an architect) and this restricts the creativity of the structural engineer.
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