This is a sidewalk grip where it ramps up from the street. I noticed that all of them have the same melt pattern. Low traffic area when no one was out.

Just curious if anyone knows why

  • gedaliyah@lemmy.world
    0·
    1 month ago

    Here is what the underside of that particular plate looks like. The metal heats up faster than the concrete as the temperature rises, so the parts with thicker metal melt faster.

        • Captain Aggravated@sh.itjust.worksEnglish
          0·
          1 month ago

          This is the kind of thing I felt the Fediverse was missing that Reddit had, the braintrust. The power behind r/whatisthisthing. The ability to say “Forensic paleo-opthalmalogists of Reddit…” and get five credible answers. Because a cross section of the entire human race was there. The Fediverse is populated mostly with a self-selecting group of mostly left leaning mostly FOSS enthusiasts so the variety in walks of life wasn’t here yet. This seems to be improving.