This Tunnel Put Together Like Lego Bricks Impossibly Sticks Together With No Support

This Tunnel Put Together Like Lego Bricks Impossibly Sticks Together with No Support

Video: Yeah, I'm not ashamed to admit this: I feel slightly less comfortable when I'm under a tunnel than when I'm not. It's not that I think that the tunnel will collapse on me - it's because I know the sky absolutely won't. This tunnel would put my fear into overdrive because it looks like it would totally collapse. It has no permanent support work and the entire construction process looks like piecing together Lego bricks. Yet it can support so much weight and still stand up. Sorcery is at play, obviously. But it's also the work of the Zipper truck system. Lock Block Ltd writes:

This video shows the versatility of the Zipper truck system. We are able to create tunnels with openings very quickly with no permanent support work. This arch can be used as a mining reclaim tunnel or storage vault with top access.

They really just put the blocks together and then hope it all sticks after the truck pulls out of the tunnel... and it totally does.


    This is how arches have been built for 100s of years. Minus the truck.
    Gravity wedges the blocks together.

      Hundreds? Try thousands. Keystone arches were widely used by the ancient Romans and were in wide use before then.

      Interesting use of the truck. I expect that when muscle power was used the arch was maintained with wooden scaffolding until the keystone was added.

      lol 1000's of years.

      Even the most high tech tunnel lining methods use similar geometry (with temporary boltings to hold it rigid until the grout goes off).
      Nothing new here, except for the truck. Arch form-work is older than Archimedes himself.

      No magic, note that the backfill on the sides of the tunnel is necessary to stop the whole structure splaying and collapsing, Norman arches are superior to Roman arches.

      Last edited 15/01/16 3:38 pm

    "IMPOSSIBLY" - I don't think that word means what you think it means.

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