Underpinning is a complex field that requires a unique approach link. It is important to consider the characteristics of the project as well as the expertise that you have. How do you select the correct underpinning strategy? Let’s examine the options without any brands bias and shed light on the important factors to consider.
1. Mass Concrete Underpinning:
This approach is traditional and involves digging out sections of the existing foundation to fill them with high strength concrete. It is a proven method that has lasted the test of time. It is most effective on smaller projects or structures that can benefit from a greater soil load-bearing capability.
2. Pile Underpinning
In pile underpinning, long columns made from concrete or steel are placed in the ground underneath the foundation. This method transfers the weight of a structure to the piles. It provides stability. Because pile underpinning can be used for different soil types, it is a popular choice.
3. Helical Piers
Helical pilings are screwlike structures that are driven into the ground under the foundation. They provide a practical solution in areas with limited accessibility or where minimal disruption is necessary. Helical pilings are used when soil conditions require a stronger foundation.
They are thin columns, sometimes called mini-piles. They can be made out of materials such as steel. They are very useful at sites with limited access and space. Micro-piles can be used to stabilise foundations in a way that does not cause significant disturbances.
5. Compaction Grouting
Compaction grouting involves injecting the grout mixture to the soil below the foundation in order to improve its stability and density. This technique is effective at addressing soil voids and loose formations.
A number of factors come into play when determining which underpinning is best, including soil composition, site access, budget, timelines, and structural issues. In order to make a well-informed decision, you should consult professional geotechnical specialists and engineers.
The final decision on which approach to use should be made based upon the unique needs of your particular project. It is impossible to find a service or a method that can be used in every situation. It’s important to find the approach that will ensure the stability of your building while still respecting all the characteristics of the site.