Although the photo below doesn't look like it (end of the week), there was a lot of work on the site in back of my house every evening this week as the foundation contractor drilled and poured concrete for two more 20-meter deep piers spread around the site.
Then over the past four nights, a constant line of trucks pulled out all of the foundation contractor's equipment and brought in all of the concrete blocks that you see on the site.
Over the next week, I expect that workers will erect frames over the three drilled concrete piers and then load them up with the concrete blocks to test the settlement of the piers. Based upon this information, the structural engineer will verify his calculations and finish the structural design. This information will also verify or refine the cost estimate for constructing the foundations.