2 ms·
> 4. Are there any reason why we dont use TBM for small pipes, ( like for electricity or fibre optics, ) Cut-and-cover[1] construction is an order of magnitude
by alexhutcheson 7y ago
> 4. Are there any reason why we dont use TBM for small pipes, ( like for electricity or fibre optics, )
Cut-and-cover[1] construction is an order of magnitude cheaper. You don't need TBMs unless you're going really deep, or there are things on the surface that are really expensive or disruptive to work around.
[1] https://en.wikipedia.org/wiki/Tunnel#Cut-and-cover https://en.wikipedia.org/wiki/Tunnel#Cut-and-cover