ABSTRACT
The structural idealization transforms the structural analysis modeling problem into a mathematical problem that can be solved by computer or by hand, using a calculator. The model is analysed for the effects of loads and applied deformations, including the self-weight of the structure, superimposed stationary loads or machinery. The usual procedure is to idealize the structure by one, two, or three-dimensional elements. The lower the number of dimensions considered, the simpler the analysis. One-dimensional analysis can also be used for some curvilinear structures, such as arches or cables, and also certain shells. The shapes of the arch and suspended cable structures show some significant similarities, the one being the mirror-image of the other. Cable systems are also used to support roofs, particularly long-span roofs where the self-weight is the most significant load. In both arches and cables, gravity loads induce inclined reactions at the supports.
