November 18, 2022 – Last week, the last of the over 500 piles, ranging from 8 to 16 meters deep, was drilled and filled with cement. Along the eastern wall in front of the houses, the cement is now dry on the structure that holds the piles together. Along the south wall, the rock was excavated down to the line of the first tiebacks and was placed into the rock crusher before being trucked out.
With the last piles filled with cement, the pile driller left us for good on Tuesday.
The drilling machine for the tiebacks arrived and, as you can see in the pictures and video, they have begun to drill the 2nd layer of tiebacks on the back wall, about 6 meters down from the original ground level. This machine will make its way around the site. When it finishes a line of tiebacks in a segment, it will move along, and the excavator will follow in its wake excavating down the next 3 meters. They will go round and round like this until we hit the bottom of the excavation.
The crushed rock is sometimes trucked out and sometimes it simply accumulates in giant piles. This ground rock is sold and is picked up by various projects as needed.