Concrete foundations can be reinforced using underpinning. It offers many benefits, including
the ability to be easily engineered and low labor costs. Underpinning allows for the structure to
be used even while it is being constructed. The process can be done in two different ways: slab
jacking and beam and base underpinning. A foundation repair company can provide a free
evaluation to assess the problem.
Underpinning refers to strengthening the foundation of a structure with grout or polyurethane-
based chemical substances. Polyurethane, an expansion agent, expands mud and lifts
pavement. Grout is injected into soil to alter its chemical composition. This can also done by
hand. This method has its disadvantages. It is only possible if you are a qualified contractor with
sufficient knowledge about underpinning.
If the foundation is not strong enough, you might consider strengthening it using a pier
technique. This involves placing piers under the foundation to transfer the home’s weight
underground. This is also a good option for large clays and wet soils. Another option is mass
pouring, which involves digging out weak soil and pouring concrete to stabilize it. The process is
quite time-consuming, and it is not suited for all ground conditions.
Another traditional method for underpinning is called the “pit method.” The mass method uses
hand-dug pits that are eight to twelve feet apart and can be used for both homes and other
buildings. This method is more affordable than beam and base underpinning and can be used
for weak foundations. However, it is best suited for buildings that span over underpinning pits. A
rebar reinforcement can be applied to the reinforced concrete.
Grouting is another method of underpinning. Grouting is a great way to strengthen weak soils
and make them stronger. Grouting has the advantage of being a long-term solution. Grouting
extends the foundation to a stronger layer of soil, making the building less vulnerable to
damage. It is not permanent. If you are concerned about foundation stability, it is best that you
consult a foundation expert.
You should also consider adding additional floors to your house, such as apartments. It is
important for two reasons. It will increase the building’s capacity, and it will strengthen the
foundation. Underpinning also solves problems with the soil. Because soil properties change,
often through subsidence and consolidation, foundations are less stable. Even the most
desirable sites will require deep foundations. Underpinning is a popular alternative