Earthquake Remediation

 

Earthquake Remediation

Mainmark offers the world’s most advanced earthquake remediation, liquefaction mitigation and ground-strengthening technologies.

Residential JOG_Regents Park Ext Stations 2

JOG re-levelling a large residence after the 2011 Christchurch Earthquakes

We ensure homes, buildings and other structures are brought back to level and given a strong, stable base, allowing for cosmetic repairs to the damage that seismic activity has caused. In many cases our methods to fix foundation ground also correct other problems, such as bringing cracks in walls back together and re-aligning doors, windows and skirting boards.

Mainmark has successfully resolved thousands of earthquake remediation projects internationally. We have gained a great deal of experience, most notably in New Zealand, Japan, and other earthquake-prone countries.

Mainmark use a number of innovative ground engineering solutions, including our proprietary Teretek engineered resin solution. As part of post-earthquake remediation works in both Japan and Christchurch, we have developed expertise in technologies such as JOG Computer-Controlled Grouting and Jet Grouting.

What sort of damage can an earthquake cause to a building or structure?

Earthquakes and seismic activity cause structures to suffer substantial damage. They sink, or partially sink, down into the ground, cracks appear in walls, doors and windows jam and cease to work properly, and the ground itself can be weakened.

The level of earthquake damage depends on many factors; the proximity of the earthquake source, the magnitude of the quake, how long it lasts, the type and quality of the engineering of the structure, as well as the type and condition of the ground the structure sits on and the degree of liquefaction that has occurred. Generally, the bigger, closer and shallower the earthquake, the stronger the shaking will be, and the more damage is likely to occur.

Sinking (subsidence) can be at varying levels at various points, or the collapse can be spread across the entire footprint of a structure’s foundation, depending on where the affected ground is and how large an area it is. This can be very serious, with the structural integrity of the building comprised, it will generally become unsafe. If left untended, damage is likely to worsen, creating further building subsidence and other consequent damage.

Ground is often weakened, with liquefaction resulting in uneven ground density. Liquefaction occurs when ground shaking loosens water-logged sediments, effectively squeezing liquid up from the ground, ultimately altering ground conditions. When ground has been affected, building subsidence is common. Foundations or footings are no longer ably supported, sinking due to the weak ground.

Strengthening weak areas means unstable ground can again be suitable for the weight of a structure, without worry of continued subsidence. 

What are the solutions to make a building or structure useable and safe again?

Commercial JOG BNZ Exterior 1

Heritage building – BNZ Kaiapoi being re-levelled after the 2011 Christchurch Earthquakes.

The degree of earthquake damage is unique to each project. Traditional level correction methods, known as underpinning, involve excavating or digging up parts of the foundation, pouring in concrete, waiting for it to set, and then jacking up the building off the concrete blocks. These methods often cause further substantial damage and do not strengthen weak ground. These methods can be time consuming (often requiring weeks or months) and messy.

Our methods are much friendlier, both to the building and to those that occupy it.

Mainmark specialises in level correction that not only brings a building back to level but also strengthens any weak ground under and around the perimeter of the foundations, ensuring a stable base and avoiding recurring sinking issues.

Our non-invasive techniques are cost and time efficient.

We re-level the building and can compact and strengthen foundation ground, delivering a stable base for the future of the structure. We have cutting edge solutions for structures of all kinds and any size, from small homes to large commercial buildings, and above ground structures to underground systems. Our worldwide proven systems provide solutions to any sector; residential, commercial, industrial, infrastructure, mining, and resources.

Various product warranties and Building Code requirements apply (please contact us to see which apply in your region or country).

Earthquake Remediation in Homes

Mainmark has extensive experience with residential earthquake remediation, having brought hundreds of houses back to level, each affected by varying degrees of seismic activity. Our methods are effective on buildings of any size, also delivering successful results on driveways and paths. Where necessary, we also utilise technologies that strengthen the ground, so homes are not simply brought back to level, they are given a solid base and strong future.

Beyond earthquake remediation, we have successfully re-levelled thousands of projects around the world. We lead the world in the development of ground engineering technologies.

We visit your home and complete a full assessment of the damage. Our experienced engineers and technicians establish the approach needed, creating a plan specific to the needs of your house.

As the building is brought back to level, any internal and external wall cracks generally close up. Most importantly, structural damage is resolved, and with a stable foundation the future of the house is sound.

Benefits of Mainmark’s level correction methods:

  • Floors and building are brought back to level
  • Cracks in internal and external walls generally close up
  • Jammed doors and windows are freed up
  • Gaps between floors and skirting boards general close up
  • We don’t make mess – there is no concrete dust, water or anything else to clean up
  • There is minimal disruption
  • We don’t cause further damage to the house or the landscaping
  • Techniques are non-invasive, we don’t tear up floors and excavate ground
  • Our methods are very quick, completed in a fraction of the time of traditional methods
  • The methods we use strengthen weak ground, so your home becomes level and more stable
  • The products and techniques we use have zero negative impact on the environment.

Mainmark methods used for earthquake remediation on Residential Homes:

Earthquake Remediation in Heritage Buildings

Mainmark has delivered successful results to hundreds of heritage buildings requiring earthquake remediation. Our methods are a great solution, for many reasons, not least of all as raising, re-levelling and re-supporting the building gives it a new lease of life, allowing an historical structure to stand strong into the future.

A significant benefit of Mainmark’s foundation repair methods is that they are non-invasive, meaning the already fragile heritage building will not suffer further damage during the process. As the building and its floors are brought back to level, any internal and external cracks generally close up. Most importantly, structural damage is resolved, and with a stable foundation the future of the building is sound.

Our methods are effective on buildings of any size, also delivering successful results on driveways and paths. Where necessary, we also utilise technologies that strengthen the ground, so the building is not simply brought back to level, it is given a solid base and strong future.

Key benefits of Mainmark’s earthquake remediation methods include:

  • Floors and buildings are brought back to level
  • Non-invasive techniques keep further damage to the building, and the landscaping around it, to an absolute minimum
  • We don’t tear up floors and excavate ground, so historical integrity remains unaffected
  • Internal and external wall cracks generally close up, leaving only cosmetic treatment (plastering, painting and re-pointing brickwork)
  • Jammed doors and window can usually operate properly again
  • Gaps between floors and skirting boards general close up
  • Methods are effective on various foundations, such as, bluestone, brick and sandstone
  • The methods we use strengthen weak ground, so the building becomes level and more stable.

Mainmark methods used for earthquake remediation on Heritage Buildings:

Read about how we helped the Heritage listed Bank of New Zealand building in Christchurch stand strong.

Earthquake Remediation in Commercial and Industrial Structures

Earthquake damage can cause numerous setbacks to the Commercial and Industrial sector, often with negative impact on productivity, as well as on equipment and machinery. Mainmark’s foundation repair methods can lift buildings of any size, having been used with great success on thousands of projects around the world. The earthquake remediation solutions we provide to the commercial and industrial sector are sought for many reasons, a significant factor being how cost effective and time efficient the processes are.

Bringing the building and its floors back to level means everything is back on an even keel, optimising business output. Most importantly, structural damage is resolved, and the future of the building is sound. In fact, some of our methods actually improve the strength of the ground and can increase a building’s bearing capacity.

Mainmark methods are suitable for any building, of any size. We also have solution for parking areas, loading docks, hardstand areas and driveways.

Key benefits of Mainmark’s earthquake remediation methods include:

  • There is minimum disruption to the site
  • There is little, if any, downtime to the business. In many cases, the site can still operate, with staff able to continue working (this is case-dependent, damage may be such this is not possible)
  • Projects are completed in a time-frame significantly less than traditional methods
  • Non-invasive techniques keep further damage to the building, and the landscaping around it, to an absolute minimum. We don’t tear up floors and excavate ground, so do not create mess
  • Internal and external wall cracks generally close up, leaving only cosmetic treatment (plastering, painting and re-pointing brickwork)
  • Jammed doors and windows can usually operate properly again
  • Trip hazards are eliminated. Forklifts can run smoothly and machines can resume in just 30 minutes
  • There’s usually no need to move stock or machinery off the floor. No excavation. No mess
  • Warehouse shelves and conveyor systems usually return to their correct positions as floors are re-levelled
  • Most factory and warehouse floor repairs are completed in a day or two. There’s no cutting out of old slabs and no waiting days for new slabs to cure
  • The methods we use strengthen weak ground, so the building becomes level and more stable.

Earthquake remediation methods Mainmark uses on Commercial and Industrial buildings:

Read about how we re-levelled the Christchurch Art Gallery

Earthquake Remediation in Infrastructure

In the Infrastructure sector, earthquake damage can fast cause havoc. Earthquake effects like sinking structures and floors, and weak ground create numerous problems, and are likely to become hazardous if not resolved promptly and correctly.

Mainmark’s methods have delivered results to thousands of projects worldwide. We have successfully raised, re-levelled and re-supported sunken roads and highways, bridge approach slabs, bridge abutments, culvert areas, concrete slabs, airports, seaports, railways, parking areas, and many other civil works.

Our earthquake remediation solutions are sought for many reasons, not least of which are the cost effective and time efficient processes we use.

Bringing the building and its floors back to level means everything is back on an even keel, optimising business output. Most importantly, structural damage is resolved, and the future of the building is sound. In fact, some of our methods actually improve the strength of the ground and the building’s bearing capacity.

Mainmark methods are suitable for any building, of any size. We also re-level parking areas, loading docks, hardstand areas and driveways.

Key benefits of Mainmark’s earthquake remediation methods include:

  • There is minimum disruption to the site, no excavation and no mess
  • There is little, if any, downtime to the site, in many cases, it can still operate (this is case-dependent, site requirements may be such this is not possible)
  • Projects are completed in a time-frame significantly less than traditional methods
  • Non-invasive techniques mean further damage to the site, and the landscaping around it, is absolutely minimal
  • We don’t tear up areas or excavate ground, creating costly and time-wasting messes
  • Trip hazards are eliminated. Vehicles and machinery can run smoothly almost immediately
  • Re-levelling is completed in a fraction of the time of traditional methods. There’s no cutting out of old slabs and no waiting days for new slabs to cure
  • There are usually substantial cost savings, in comparison to traditional methods
  • Weight is no problem. In fact, the greater the weight on the ground, the more it can be compacted. Huge ground support can be created, especially when the area is loaded with weight
  • There’s minimal interruption to traffic flow or activities to busy facilities, such as airports
  • The methods we use strengthen weak ground, so the site becomes level and more stable.

Mainmark earthquake remediation methods used in the Infrastructure sector:

Earthquake Remediation in Mining and Resources

Earthquakes can cause many problems in the Mining and Resources sector, such as sinking structures, floors and ground. If not resolved promptly, and correctly, subsidence and weak ground issues caused by earthquakes can result in costly downtime and even become hazardous.  

Mainmark foundation repair methods have successfully raised, re-levelled and re-supported on-ground and in-ground mine-site structures, including:

  • Coal loader towers 
  • Conveyer belt pedestal bases 
  • Rock-breaker footings 
  • Rail index machine slabs 
  • Vehicle service centres & garages 
  • Stacker reclaimer rails
  • Office buildings 
  • Conveyer belt counter-weight towers 
  • Railway lines 
  • Engineering workshops 
  • Parking areas
  • Loading docks

Mainmark concrete levelling methods have been used successfully on any mine structure, of any size.

Key benefits of Mainmark’s earthquake remediation methods include:

  • There is minimum disruption to the site, no excavation and no mess
  • Projects are completed in a time-frame significantly less than traditional methods
  • Non-invasive techniques mean further damage to the site, and the landscaping around it, is absolutely minimal
  • We don’t tear up areas or excavate ground, creating costly and time-wasting messes
  • Cracks generally close up
  • Trip hazards are eliminated. Vehicles and machinery can run smoothly almost immediately
  • Re-levelling is completed in a fraction of the time of traditional methods. There’s no cutting out of old slabs and no waiting days for new slabs to cure
  • There are usually substantial cost savings, in comparison to traditional methods
  • Weight is no problem, in fact the greater the weight on the ground the more it can be compacted. Huge ground support can be created, especially when the area is loaded with weight
  • There’s minimal interruption to the site, operations can often continue while the work is being completed
  • The methods we use strengthen weak ground, so the site becomes level and more stable.

Earthquake remediation methods Mainmark uses in the Mining and Resources sector:

 

 

 

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