Civil engineering is a discipline that deals with the design, construction and maintenance of the built environment. This includes public works such as roads, bridges, canals, dams, railways, airports, pipelines, sewerage systems and other components of buildings. BoltSafe sensors can be used when these public works are built, for instance to permanently and remotely monitor the tension on clamps that secure the suspension cables of a bridge. Another application is the daily calibration of the tightening tools.