Arcelor Mittal: H4 Blast Furnace Slag Pit
Sheet Piling Installation
East Chicago, Indiana
Thatcher Foundations Inc. installed 555 wall feet of cantilevered steel sheet piling for the H-4 Slag Pit walls on a cost-plus contract.
The project was fast tracked, with Thatcher's crew working six ten-hour shifts each week. Before the new sheet piling could be installed, old corroded sheeting had to be removed. The soil profile was cemented slag and steel slag, which was excavated by others. Careful coordination with other subcontractors was key to keeping everyone on schedule.
Thatcher completed the project ahead of schedule, and under budget. Thatcher worked with the ArcelorMittal engineers during project development, consulting about the types of steel sheet piling that would be best suited to the extreme heat and corrosion caused by the melted slag and quenching operation. Thatcher also worked with its steel supplier to find an appropriate type of sheeting which would be available to meet the accelerated schedule.
Thatcher maintains an "A" rating in ArcelorMittal's safety system with ISNetworld, so with the addition of a site-specific safety plan and a crew-wide plant safety orientation, Thatcher was able to mobilize quickly. More than 1000 incident-free hours were worked by Thatcher employees on this project, including members of Indiana Local 150 operators and Indiana Local 142 Teamsters.