Three different types of pile drivers onsite, including a helical pile driver. And at least two different types of piles (hollow pipe and I-beam).
I’m not an engineer, so I don’t know the meaning of all this, except the complaints in that reddit thread may have been premature if they end up using the helical pile driver as the primary pile driver (helical pile drivers are quieter than impact pile drivers).
This is definitely under construction in full swing though.
