run in the factory, it recalculates in real-time to ensure that the interface between the two seg-ments is a perfect match for the theoretical design. It’s an innovation that rests on another: the industrial production of segmental bridges to cut time frames, costs and risks by taking full con-trol during production rather than relying on third parties. Industrial production was used for the Ma On Shan Railway and Lai Chin Kok via-duct in Hong Kong, the Roskilde Fjord highway in Denmark, the San Juan Urban Train in Puerto Rico and a viaduct for the Dubai Metro. The com-pany’s experiences on these projects highlight-ed the need to maximize precision with SeCAC. “The software ensures geometry control during casting, which determines production speed and allows the right decisions to be made, because previously unknown variables always crop up on any project. Without control over this process, casting and erection are left entirely in the hands of third parties,” explains Javier Martín, Surveyor Manager in the Roads and Bridges Business Unit of ACCIONA’s construction business. “Applying this technology allows us to use all measurement options available in the market and to adapt to the specific needs of each project. We can measure the segments’ main dimensions with HOW IT WORKS TEAMWORK CORAL TEAMWORK CORAL The multidisciplinary development team included surveying, civil, and telecommu-nications engineers as well as IT experts from ACCIONA’s RDI Department and from the Roads and Bridges Business Unit. The project was divided into various proces-ses worked on by different teams. The first process involved creating geometric calculation algorithms; the second, crea-ting a user interface with a stable, unam-biguous, user-friendly environment. Fina-lly, SeCAC had to be verified and validated.