Like new again
The new pool would overlap the original vessel’s footprint by about 50 percent. That meant that, after the old pool was demolished, the builder had to reconstruct part of the grade, ensuring it would be strong enough to hold the pool and deck.
To do this, Lokker and his crews refilled the area with crushed miscellaneous base (CMB), a blend of ground-up concrete, soil, rocks and various other materials. With so many different sizes of aggregates in the mix, it is believed to compact quickly and more tightly than a more uniform blend. Crews built it back up 6 inches at a time — with a tractor in some places, by hand in others — then watered down and mechanically tamped it in place.
A geotechnical engineer came to the site after every foot had been placed to test the compaction. This process took about two weeks.
