System for monitoring the movements of construction work parts

A system for monitoring movement of a structure, the system comprising:

• a plurality of measurement taking stations configured to sight targets, at least one of the measurement taking stations being configured to mount to the structure;
• a plurality of reference targets, each reference target linked to at least one of the plurality of stations;
• and
• a plurality of monitoring targets mounted on the structure, at least one of the monitoring targets arranged and configured to be sighted by at least a first and second measurement taking station;
• wherein each measurement taking station measures at successive instants coordinates of at least one of the plurality of reference targets and coordinates of at least one of the plurality of monitoring targets;
• and
• wherein the coordinates of the reference targets and the coordinates of the monitoring targets are processed at the successive instants to determine whether one of the monitoring targets has been displaced between two of the successive instants.