Chemical Underpinning

Pittsburgh, Pennsylvania


Water began to seep through the floor of the shop, break room, and bathrooms inside a manufacturing facility. The investigation determined that a water line had broken, and weekend soils below the floor, causing the settlement. Voids were also present.

The Challenge

The client’s primary concern was addressing the stability of the area without affecting normal usage.

THE Solution

CJGeo proposed chemical grouting to stabilize the weakened soils, along with polyurethane grouting to fill voids. Previous repairs to address floor settlement had been completed, so a hydro-insensitive undersealing polyurethane grout was used to ensure stability without lifting the slab.