Earthquake engineering is an interdisciplinary branch of engineering that designs and analyzes structures, such as buildings and bridges, with earthquakes in mind. Its overall goal is to make such structures more resistant to earthquakes. An earthquake engineer aims to construct structures that will not be damaged in minor shaking and will avoid serious damage or collapse in a major earthquake.
A properly engineered structure does not necessarily have to be extremely strong or expensive. It has to be properly designed to withstand the seismic effects while sustaining an acceptable level of damage.
Shake-table crash testing of a regular building model (left) and a base-isolated building model (right) at UCSD
Tokyo Skytree, equipped with a tuned mass damper, is the world's tallest tower and is the world's second tallest structure.
Snapshot from shake-table video of a 6-story non-ductile concrete building destructive testing
Shake-table testing of Friction Pendulum Bearings at EERC
Structural engineering is a sub-discipline of civil engineering in which structural engineers are trained to design the 'bones and joints' that create the form and shape of human-made structures. Structural engineers also must understand and calculate the stability, strength, rigidity and earthquake-susceptibility of built structures for buildings and nonbuilding structures. The structural designs are integrated with those of other designers such as architects and building services engineer and often supervise the construction of projects by contractors on site. They can also be involved in the design of machinery, medical equipment, and vehicles where structural integrity affects functioning and safety. See glossary of structural engineering.
The Eiffel Tower in Paris is a historical achievement of structural engineering.
Pont du Gard, France, a Roman era aqueduct circa 19 BC
Galileo Galilei published the book Two New Sciences in which he examined the failure of simple structures.
Isaac Newton published Philosophiae Naturalis Principia Mathematica, which contains his laws of motion.