• jaybone@lemmy.world
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    3 hours ago

    These numbers don’t align though. 4271 is not a Bxxx or Dxxx and also isn’t on that diagram on the left. I’m so confused rn.

    • 9blb@feddit.org
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      3 hours ago

      B and D are weight classes. B 125 is tested to 125 kN, D 400 is tested to 400 kN.

      DIN 4271 tells you how manholes of class B are to be build.

      • jaybone@lemmy.world
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        3 hours ago

        I see the number in the diagram now after looking more closely. Also seems the number is upside down in the game.

    • sushibowl@feddit.nl
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      27 minutes ago

      DIN 4271 is the number of the standard that describes how to build manhole covers of type B125.

      The correct manhole cover should probably state something like DIN 19584, which I think is the standard covering the B400 class manhole covers.

  • Red_October@lemmy.world
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    7 hours ago

    Obviously in the dystopia of Night City, lighter weight manhole covers were approved for road use purely to cut costs, and any deformed or destroyed covers have the cost offloaded to the poor rube who last ran them over.

    • Kusimulkku@lemm.ee
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      6 hours ago

      Most of the complaints about bugs in this game seemed overblown

      You should’ve tried it on PS4 at release. It was glorious. I did have a ton of fun because of the bugs (couldn’t progress in the game much) but if I had paid for it I would’ve been pissed

  • no banana@lemmy.world
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    5 hours ago

    I have never thought about the fact that manhole covers need to hold up to weight. Of course they do and it’s perfectly normal and sensible. It’s just not a thought I’ve ever had.

    • 9point6@lemmy.world
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      8 hours ago

      Technically it’s the manhole covers that need to support the weight.

      Manholes themselves are expected to do the opposite of holding weight

      • grue@lemmy.world
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        3 hours ago

        Technically, the walls of the manholes, in turn, support the weight of the cover and whatever load is on top of it. The entire manhole is a weight-bearing structure.

        • WldFyre@lemm.ee
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          6 hours ago

          Structures underground experience buoyant forces that act to push them up. Manholes (and any structure bottom, like storm inlets, pump station wet wells, etc) need special consideration since they can be partially or mostly hollow, so they have to be heavy enough to remain in place.

          • usualsuspect191@lemmy.ca
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            6 hours ago

            You know, I knew that but couldn’t figure out what the opposite of weight was for some reason. Thanks for the extra learning!

            Fun fact: Coffins experience this force too, and during flooding can rise up out of the ground

            • superkret@feddit.org
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              6 hours ago

              Ah, that explains why my grandpa was buried in a lead coffin.
              He lost a lot of weight right before he died, so he was too light!

    • Whelks_chance@lemmy.world
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      8 hours ago

      For formula one races they weld them down to stop the cars incredible downforce from sucking them up into the air. Even then they sometimes get torn up and thrown around.

      Very important to take them seriously.

    • x00z@lemmy.world
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      8 hours ago

      Manhole covers are also a common exercise for engineering students. Like designing one that can hold x amount of weight with a specific set of limitations and/or requirements.

  • zaphod@sopuli.xyz
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    8 hours ago

    It’s not a bug, it’s a feature, in this dystopian world nobody cares about manhole cover standards anymore.