Eli Lilly
Corporate Headquarters Indianapolis Indiana
Summer 2000

The scope of this project was to stabilize soils under four concrete footers. Each footer was located within five feet of a proposed elevator shaft pit to be installed.
Excavation of the elevator shaft would require digging 8-10-feet below the bottom of each footer. Needless to say any movement of the footing could jeopardize the entire building structure. Rock drills were used to drill through the 4-foot thick footers so that injection rods could be placed and used to pressure grout in place over 1000-gallons of expanding polyurethane grout. Once injected the polyurethane grout solidified and compacted the soils directly under each footer.
After grouting operations were completed excavation of the elevator pit begin. Grouting crews remained on site to monitor excavation of the pit over a 3-week period and recorded no measurable movement of the footers and support columns.