3 ms·
it is ridiculously labour intensive. First, all utilities have to be mapped out, then any basements shored up. Then once the cut and cover is in progress, all
by KaiserPro 7y ago
it is ridiculously labour intensive.
First, all utilities have to be mapped out, then any basements shored up.
Then once the cut and cover is in progress, all utilities have to be re-routed, during, then replaced after the tunnel is cut.
Then, the disruption of having major transit ways shut for n weeks.
Lastly, there isnt a machine to do it. The TBM is pretty efficient labour wise.
- koheripbal 7y agoThis is only if you build subway tunnels which are very shallow. Deeper tunnels for longer distance transport do not have any of these limitation.
- bluGill 7y agoDeeper tunnels cut and cover get expensive fast, bored tunnels are about the same cost at any depth.
- KaiserPro 7y agothis is purely for cut and cover. As soon as you don't need to break the surface, the cost drops significantly, and the speed of build, planning and after care increase dramatically.
- spditner 7y agoBesides the physical activities, the number of interested parties that become involved when touching so many things drives up the bureaucracy with each party bringing their own engineering requirements and conditions for cooperation.