Construction is a trying mess from time to time with me. Sometimes I wonder what they were thinking, or not thinking. This photo is a prime example of the problems that Termite companies experience. Where are those termites coming from and sometimes in construction you may find the prime cause of the issues.
Once in Florida I ran across a wood floor with sleepers, which kept the wood from sitting on the concrete and possible affected by water or condensation. But it turned out to be saw palmetto roots coming up through the slab after it was buried and not removed.
If you’re building a home check the soil before they pour the cement and request stuff to be looked over. It’s your house.