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

  • snooggums@lemmy.world
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    1 day ago

    The material underneath the top layer will impact how the material temp changes.

    It looks like it has some underlying material that is in the square and X shapes that is either retaining heat at a different rate that the surface material or possibly absorbing heat from the warmer ground mass that isn’t as cold as the surface and it is enough of a difference for the snow to melt faster there than the surrounding area.