What Is Underpinning?
Underpinning is a process used to strengthen the foundation of a building or structure. It involves building additional support beneath the existing foundation, either by excavating and replacing the soil or by adding additional materials such as concrete or steel. This is done to improve the stability of the structure or to allow for additional weight or load on the foundation. Underpinning is often necessary when a building is being renovated or when the soil beneath the foundation has changed due to erosion or other factors. It can also be used to repair damage to a foundation or to correct problems with the alignment or stability of a structure.
How to underpin a basement.
Underpinning a basement involves reinforcing the foundation of a building by adding support to the existing foundation. This can be done for a variety of reasons, such as to repair damage to the foundation, to add additional living space to a building, or to stabilize a building that is sinking or settling. There are several methods that can be used to underpin a basement, including:
Concrete piers: This method involves digging deep holes and filling them with reinforced concrete piers to provide additional support to the foundation.
Helical piers: These are screw-like piers that are installed by rotating them into the ground using a hydraulic torque motor.
Steel beams: Steel beams can be used to provide additional support to the foundation by inserting them beneath the foundation and attaching them to the foundation walls.
Micropiles: These are small, high-strength concrete or steel piles that are drilled into the ground and used to support the foundation.
Final Note About Underpins.
It is important to consult with a professional structural engineer or a professional contractor before attempting to underpin a basement. The process can be complex and requires specialized knowledge and equipment.