Introduction to Geometry Control

Artist's conceptual drawing courtesy of the DTTDC

Geometry control for long span bridge construction is the broad definition for an assembly of spatial information and methodology, used to control positions and dimensions of structural elements during the various phases of bridge construction / erection.

The bridge designer always strives for an optimized bridge design, to ensure true value for money for their client, but still providing structural durability, minimized maintenance costs and ‘functional’ longevity. The main role of the geometry control engineer is to ensure that the bridge is constructed as close to the designer’s vision as possible.

The Geometry Control engineer works closely with the erection engineer, static modelling engineer and the site survey department, to ensure that every construction stage is well executed, and construction errors are identified early, so that mitigation can be performed in subsequent construction stages without impacting the program schedule.