HS2 C1 ALIGN JV - Survey Equipment

Supply and delivery of temporary survey equipment (Gyromat or similar). • The tunnels are High Speed rail infrastructure, therefore the alignment consists of straight lines and very smooth curves (minimum curve radius ~2.5km). The maximum gradient is 2.5% and the depth from surface varies between 20-90m along the route. • Control network with baselines up ~1km in length will be available in the surface near the tunnel portals (walking distance). The network to be used for launching the TBMs is currently being d...