The tight execution time required the team to prepare the Velsertunnel project with surgical precision. In 12 so-called 'scrum' sessions, specialist teams from BESIX and client Rijkswaterstaat discussed every detail of the assignment. After this, a 3D model of the Velsertunnel was built from scans.
Using this model, contractors and subcontractors set to work together, using a technology known as Building Information Modeling. The intensive use of this technology prevented no less than 1,032 complications. Among other things, BESIX and a subcontractor designed special milling machines allowing the milling of the tunnel roof - originally estimated at three weeks - to require only three days work.
Thanks to this meticulous preparation, the Velsertunnel was completed in a record five months.