When a foundation sinks, it is because the soils under the foundation are sinking. To fix a sinking foundation, Advanced will install supports that go down through sinking soil to stable layers that can support a home. Stable soils can be reached by drilling holes, driving pilings, or screwing in piers.
Practical problems with soft soils, water tables, and access often make it too costly to drill deeper than 15 to 20 feet. Imagine trying to install a 15 foot deep pier in a room with a 10 foot ceiling or under an 8 foot eve. Pilings made of short sections of steel or concrete can be driven into the ground by pushing against the foundation of a home. The hydraulic equipment required to do so is the size of a small suitcase. Helical piers can be screwed into the ground, but require equipment, such as Bobcats, that may be too large to use in or around a home. A typical machine will measure 6 by 10 feet.
Once supports are installed, a home can be lifted off sinking soils. The lifting is done with hydraulic equipment, either by hand or with a manifolded hydraulic system connected to a pump and control system.
If you think you are having foundation problems, call us at Advanced Foundation Repair. Our evaluations include preparing a foundation survey and a contour diagram!