Surveying in Dynamic Condition and Its Integration in Structural Health Monitoring

Tracking behavior over time of land and buildings, with a history of over 150 years, which merges with the advent of optical-mechanical instruments for measuring angles and level differences, theodolites, level, has dealt with quasi-static structural monitoring. In fact, between the observation cycles, at an interval of several months to several years, based on the evolution of the phenomenon of subsidence and landslides, there were deviations of a few millimeters or fractions of a millimeter. In this context monitoring was considered static. Surveying in dynamic conditions, appeared and was formed as a need to monitor the behavior of structures in dynamic regime. Buildings with very bold and innovative design features required in situ study of the objectives, both during execution. Basically, this process checks if the actual behavior falls under the project specifications. The opportunity of this new branch of Surveying appeared in the 1970s, but has developed at an accelerated pace in the last 20 years, primarily due to projects involving the construction of bridges and very tall buildings, where it contributed significantly in the execution by developing new tools and technologies.