Langstaff Trunk Sanitary Sewer Laser Scan

  • MMM Group used high-definition laser scanning to create an accurate 3D model as-built survey of this 2.744-m diameter, 5.5-km long, and 25-m deep tunnel, accurate to the sub-centimeter range
  • This survey will be used to compare the final constructed tunnel to the design, and to report all differences in excess of the construction tolerances, both in position and tunnel shape
  • Cross-sections are extracted from the 3D point cloud along the design alignment and exported to AutoCad to generate a report showing deviations from design
  • Location: ¬†York Region, Ontario