Back fill the foundation, grade the structural fill, stake the elevations, and compact to within 99%.
Students continue to drive heavy equipment while backfilling the foundation.
Other students are starting the plumbing.
The final grading must be done by hand.
Grade stakes are installed to help us place the concrete to the exact height that we need. And a lazer allows us to fine tune our project to be within one sixteenth of an inch.
Then we compact the structural fill making final preparations for concrete.