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Thrasher installed resistance piers to raise this hospital’s settling foundation.

Thrasher filled voids and brought the floor back to level.

Thrasher was hired to restore a foundation which had settled on three sides of the building over time. Indications of the settlement included severe cracks in the interior walls and floors, and exterior masonry.

Thrasher installed 54 resistance piers at an average depth of 59-1/2 feet. This stabilized and lifted the interior columns and exterior walls back to level. Voids under the interior slab floor were filled, and the floor was then leveled by means of mudjacking.

Resistance piers can be used to stabilize and/or lift foundations that have settled or moved. They are one of the most commonly used types of piers in the Kansas City metro area due to the type of soil and structures in the area.

Our crews faced some challenging situations on the way to successfully completing this project. Among them were: removing 55 cubic yards of concrete on one side of the building before installation could begin; avoiding seven 4” electrical conduit lines during excavation/installation; and working around large pieces of mechanical equipment that surrounded the interior columns. Additionally, Thrasher created a new design plan for the columns by adding to the existing footings in order to attain the strength necessary to lift the columns.

Column has been excavated to expose column footing.
Column has been excavated to expose column footing.
Resistance pier installation at column complete.
Resistance pier installation at column complete.