Quote:
Originally Posted by jollyburger
There's four pile drivers on site so that matches up with the diagrams.
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They're already piling, and it seems to be a relatively quiet operation. the rigs are drilling rigs, that use an auger to drill out a column, then they install a steel casing with a steel core, and fill it with concrete. There's a very brief few seconds when they hammer in the core right at the end, otherwise there's really no noise, and the casing I saw being installed apparently went in very easily.