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
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.
Wow, a lot people knew the answer. You even managed to find an image.
Mind blown.
Thanks everyone!
Underneath the cover there is reenforcement bars in that pattern so there is more mass to conduct heat
In addition to the possibility of reinforcement bars it could also have to do with the thickness of the tactile pad or it could have recessed spots underneath (to save on material if it was injection molded) that could create an insulating air gap.
Have we considered the snow fell in that pattern? 😲😂
Because that’s where the treasure is just start digging.
Because the image of snow cannot be found
