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They are referring to a cylindrical hole or any non-tapered hole (i.e. "square" in the sense that the walls are perpendicular to the bottom). I've also heard t
by mech987987 3y ago
They are referring to a cylindrical hole or any non-tapered hole (i.e. "square" in the sense that the walls are perpendicular to the bottom).
I've also heard that a "keyed" hole works well- a hole that flares outward toward the bottom traps the solid chunk of asphalt inside.
- fwlr 3y agoI believe keying is now generally discouraged since it necessarily involves weakening “good road” around the pothole by undercutting it and replacing it with cold mix, which is fundamentally weaker stuff.