Another kind uses beams only supported at one end, usually in symmetric pairs, the cantilever type.
The simple beam type is only supported at two points, which leads to high shear loads. While better known for an eponymous tower, Gustave Eiffel created a number of these, such as the ones near Garonne, Compagnie, and Duoro, mostly built with steel. Another kind uses beams only supported at one end, usually in symmetric pairs, the cantilever type. The largest ones rely on keeping compressive forces in large vertical pillars and tension in the namesake cables; these are the suspension kind. Positive feedback loops driven by wind led to the catastrophic failure of one of these objects near Tacoma, "Galloping Gertie." For 10 points name this category of objects with types like suspension, arch, Jeff, cantilever, and truss, which span obstacles like bodies of water.
The simple beam type is only supported at two points, which leads to high shear loads.
bridges