In Washington heights they tour up the roads to do work and revealed the old cobblestone beneath (184 & Pinehurst)grambell789 t1_je5sauv wrote
Reply to comment by Gfoley4 in In Washington heights they tour up the roads to do work and revealed the old cobblestone beneath (184 & Pinehurst) by soylentgreenis
I'm more curious about the milling process. I've seen the machines and it just looks like a big rotor with knives - hammers on it. how to they deactivate those when that part of the rotor gets near the manhole, is there some kind of ferrous sensor? I never see a manhole battered so they must be pretty effecicent at detecting and avoiding them.
Gfoley4 t1_je5t26o wrote
I started to reply but this top comment answers it well. https://www.reddit.com/r/AskEngineers/comments/gixtmf/how_do_asphalt_milling_machines_perfectly_avoid/?utm_source=share&utm_medium=ios_app&utm_name=iossmf
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