ZEMCH 2015 - International Conference Proceedings | Page 484

Material quantities analysis The structure and cladding type of every pavilion has been already listed in table 1. As it’s easily noticeable the most widespread structure in the exposition is steel frame, followed by wood-steel frame and wood frame. Just two nations adopted concrete frame, probably because it was an easy solution to carry out the project in a fast way with a well-known prefabrication system. Table 2 - Structures used in the exhibition The results of material quantities estimation are reported in table 3. Data shows that 86% of structural material weight is related to steel, while just 9% is related to concrete and 5% to wood. Surely the big percentage of steel is linked to its widespread adoption, but also to the specific weight of the material (the highest in the material analysed). It’s more interesting to observe that, even if just two structures are made of concrete, 9% of material weight is of concrete. This isn’t related just to the specific weight of this material, but also to the need of big volumes to ensure the structural safety. Otherwise, wood is rather widespread but it represents just 5% of weight. That means that wood has a small specific weight, but also that it ensures a good performance with a small amount of volume. 482 ZEMCH 2015 | International Conference | Bari - Lecce, Italy