Tunneling Surveying

Tunnel center lines are transferred underground using proper and well-equipped surveying instruments Controls from the surface are used to establish underground control network including gyro-azimuth determinations. This methodology assures accuracies are achieved through the entire span of the project.

Shaft locations are surveyed, and elevation are dropped from the surface to the tunnel elevation at the shaft locations. Shaft as-builts and tunnel as-builts can be provided to the clients through 3D Scanning.

Fimtech provides control densification and traverses to site development and layout.