Slab Foundation Repair
Slab Foundation Repair, Springfield, VA
Basement slab foundation and columns cast into thickened area of slab settled. This caused the columns to settle, and the first floor, which rested on the columns and beams, settled, too. The basement floor settled up to 4 inches, and had voids up to 16 inches deep under it. The first floor above the basement had a 2 inch belly in it, with the low point over the center load-bearing beam.
High density polyurethane foam jacking for this foundation repair project. Foam jacking would be used to both void fill and lift the slab floor, and also to lift the slab foundation elements under/around the load bearing columns.
Concrete Jack foam jacking crew installed high density polyurethane to raise the settled portion of the slab back into place. A small area which did not completely lift due to interaction with previous repairs was topped with self-leveling floor treatment. After the floor was lifted, shims were placed on top of the columns to take the last bit of belly out of the upstairs floor.