Public buildings such as national or civic treasures, historic buildings like churches, halls and castles, and buildings of value to the community such as museums, libraries and art galleries can often suffer from foundation ground settlement or instability. This is commonly due to age, and as a result of the building’s original foundations being insufficient. If subsidence occurs to public buildings, preservation, rather than rebuilding is a priority, and it is extremely important that the remedial work is done with minimal intrusion.
Mainmark has built a strong reputation in the remediation works necessary to help ensure the stability of foundations for generations to come. Our non-invasive, cost effective and time efficient re-levelling methods can raise and re-support public buildings and historic houses of any size. As no excavations are required, in many cases, the building can continue to be used by the public during remediation.
Subsidence is the gradual downward movement of a building or structure due to changes in the soil conditions. If a public building like a museum or art gallery has been built on compressible clay soil, it is much more likely to suffer from subsidence compared to those built on other types of soil. Some of the most common causes of public building subsidence are:
Common signs of subsidence include cracks in the walls, uneven floors and other unexpected structural damage. If you do notice cracks in the wall, you will be able to identify whether or not it is subsidence by the nature of the cracks. They will usually be diagonal, wider at the top than the bottom and thicker than a 10p piece. Cracks can appear both inside the building in the plasterwork or outside the building in the brickwork.
If you identify any of these subsidence warning signs, it’s important you act quickly so the remediation process can begin. For more than 20 years, Mainmark has been providing cost-effective and efficient subsidence solutions for building’s around the world. To contact our experienced team, click here.
Public and historical buildings such as castles and palaces can date back centuries, meaning in many cases, the original building foundations have not been correctly executed. Because of this, subsidence can occur and if present and left untreated, will make the building unsuitable for public use. In extreme circumstances, this can lead to the complete closure of the building, meaning its valuable heritage is no longer accessible by the community.
Mainmark has built a reputation, second to none, in the successful remediation works necessary to help ensure the stable foundations of public buildings for generations to come. These works can be particularly delicate and complex and so we have developed innovative and cost-effective solutions using a key-hole surgery approach that provides quick, non-invasive results.
Mainmark’s advanced technologies stabilise and support the ground beneath the structure, giving the heritage building a new lease of life.
For large or complex buildings, our integrated computer grouting technique enables a precisely controlled, gradual level correction process, minimising damage to often fragile masonry, glass and complex steel or concrete structures. Lifts of greater than 500mm are achievable with Mainmark’s unique solutions.
In many cases, the building can continue to be enjoyed by the public during remediation. Our experienced team can repair cracks in the walls, lift and re-level sinking floors and re-support structures, focusing on one area of the building at a time.
Our innovative key-hole methods are used. Small diameter holes are drilled through the ground slabs and foundations of the building which then allow grout injectors to be inserted. Flexible pipework connects these to computer controlled valves and hence to the grout pumps, and multiple survey points are installed and located across the building. These are continuously monitored by robotic survey instruments or laser levels to control the grout pumping and the gradual levelling of the structure.
Mainmark’s engineered resin injection is also another fantastic solution for many public buildings such as churches and libraries suffering from natural ground subsidence. This unique technology uses an insertion delivery method to raise, re-level, and re-support buildings and is a fast, non-invasive and overall cleaner alternative to traditional underpinning.
Globally, Mainmark has been delivering ground engineering solutions for more than 20 years and provide quick and innovative techniques to public building subsidence. Our non-invasive technology includes:
World-leading, computer controlled, multi-point grouting process
JOG Computer-Controlled Grouting has been developed by Mainmark for level correction and stabilisation of structures, slabs and infrastructure. This non-invasive technique creates no mess, noise or vibration and little or no excavation is required. Read More
A hi-tech, advanced resin injection method delivering both ground improvement and re-levelling
Teretek® delivers a fast, non-invasive means of remediation offering minimal intrusion and interruption to the occupants. It is suitable for geotechnical issues across a wide range of buildings and structures. For more information, click Read More
Don’t see the solution to your ground engineering problem here? Talk to us, we can help. For an extensive analysis of your specific problem please complete our detailed enquiry form, alternatively fill in our quick contact form to the right.
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