Architectural Trends and Structural Design in the Middle of the Twentieth Century: Two Examples in Portugal

In the context of a reductive generalisation, it can be affirmed that the supporting structure had a different role in most buildings in the two halves of the previous century. This statement has as reference the examples of the International Style in the first half of the twentieth century and early Postmodernism in the second half. Reinforcing this division, the structure was assigned a representative role in the first part that faded in the second. Based on the abovementioned statement, this work seeks to question the relationship between the design of architecture and structure: How did architectural trends change the drawing of structure in the past? The study is developed through a comparison of two buildings representing opposite positions concerning the structure’s role. The buildings are located in the transition of the two halves of the 20th century, and clearly demonstrate the initial statements. The difference in the position of the structural design in these two projects is revealed in the drawings of slabs, beams and pillars, showing the trends in each.