Sunken pier
This pier sunk into the soil leaving the subfloor to bow under the weight of the house.
SmartJack and PowerBrace beam
Lowcountry Basement Systems used their SmartJack and PowerBrace beam to add additional support to the subfloor.
SmartJacks
SmartJacks can support more than 60,000 pounds of pressure each and are made of galvanized steel so they won't rust.