Discuss items in the urban core outside of Downtown as described above. Everything in the core including the east side (18th & Vine area), Northeast, Plaza, Westport, Brookside, Valentine, Waldo, 39th street, & the entire midtown area.
I'll bet they were built on fill dirt that had not been allowed to settle long enough before constructing them. That is what happened with Chouteau Courts on Independence Avenue at Tracy. The foundations started to fail, and the building facades cracked.