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Cake day: June 13th, 2023

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  • Synonym of “pilings.” Long rods of material, not heaps of it. Like what you build to support a boat dock.

    That said, I’m not so sure that pilings are the right solution there. That kind of foundation is used when the ground is muddy/unstable/subject to liquefaction – when it doesn’t always have good bearing strength, so they rely on friction against the sides of the piles to support the weight instead.

    But when the ground has actual voids in it (karst topography, or in this case, a bunch of old mines), you’re just driving the pilings into air and there’s no friction to be found. I think it’s more likely they do try to fill at least the nearby part of the cavity with some substance, like concrete.