Surveying 2018 Congress

2018-04-10

Following on from his win at the EISSI 2017 Awards for his project titled "Sydney Metro NorthWest - Steel Bridge Pylons", Chris Larmour spoke at this year's Surveying Congress which was held at the Novotel Sydney Central between 21-23 March. 
The Congress was titled "The Future of the Surveyor" and Chris outlined the process that he and our Scanning Team developed after being engaged to provide specialist advice during the fabrication of 2 steel bridge pylons that were to be used in the construction of a suspension bridge for the Sydney North West Rail Line project. These pylons were almost 30 metres in length, complex in shape and once fabricated off-site, would be transported by road and erected to position on the foundations.
The fabrication process involved the accurate positioning of cable tubes and anchor plates. CMS Surveyors developed a check process utilising our 3D Laser Scanning to spatially analyse and compare the As-Built position with the design. From this comparison, CMS provided adjustment advice to fine tune cable tube and anchor plate position and orientation prior to final welds being undertaken. This process was followed up by a Final As-Constructed survey to again compare positions and orientation with design.
To see this project bought to life, watch the short video below courtesy of Transport NSW.