Autonomous LiDAR Drone for Tunnel Inspection: Mapping the Unknown

Inside a mountain in the Kitimat Ranges on BC’s northwest coast is a 475-metre long, 8-metre wide “tailrace” tunnel that transports the outflow water from the hydroelectric generation station in the mountain. The client, Rio Tinto, required a detailed interior survey of the tunnel for ongoing maintenance purposes and the tailrace could not be shut down for inspection. McElhanney provided bathymetric survey expertise to launch an autonomous drone mission that captured 3D scans of the tunnel interior to provide the client with the high-definition data they required for the structure.

Take a tour of Hwy 1 through Goldstream Provincial Park

With the Malahat Corridor Improvement Project, the BC Ministry of Transportation & Infrastructure has been improving the safety of Hwy 1 by installing a median barrier and other upgrades. The stretch of highway which runs through Goldstream Provincial Park is challenging to design solutions for, as it is constrained by the river immediately running next to it, and by park lands on both sides.

Simon Fraser University Scan to BIM

Burnaby, BC – McElhanney conducted several laser scan surveys at SFU to assist with a variety of renovation and upgrade projects. Our team of modelling technicians converted the resulting point cloud exports into 3D Building Information Models (BIM) which are used directly by the architectural project team.