Settlement correction work | Pinpoint identification of buried debris settlement due to survey omissions! Pressure-resistant slab construction.
Solve the subsidence of buried waste lurking in the gaps of survey points at low cost! Significantly reduce costs and construction time with pinpoint underground exploration and pressure plate jacking.
Underground debris and buried waste that cannot be fully anticipated during ground surveys can cause irregular localized subsidence, where only part of a building sinks. Implementing comprehensive piling or large-scale ground improvement can incur significant construction costs, so a rational corrective method that precisely identifies and addresses the buried areas causing the subsidence is extremely effective. Geotech locally identifies the subsidence areas caused by buried waste through hand auger drilling and pinpoint subsurface exploration, thoroughly cutting unnecessary preliminary survey costs and overall construction expenses. For horizontal adjustment, we apply a pressure plate jack-up method using compact thick steel plates. Even in narrow sites where the transport of temporary machinery is difficult, we perform precise lifting in millimeter increments using small hydraulic jacks, leveraging the building's own weight as a reaction force, dramatically reducing construction time and costs. After lifting, we flow air-entrained mortar (air milk) into the voids under the floor and use high-viscosity epoxy resin injection for any cracks in the foundation. Geotech's subsidence correction construction menu provides reliable and low-cost restoration of the foundation.
basic information
This is an investigation into the causes of localized settlement in existing single-family homes (wooden, lightweight steel structure, cloth foundation, and flat foundation) and the horizontal restoration work. Local excavation will be conducted using ground exploration tools (hand auger and probing rod), and inclination angle measurements will be taken with a high-precision laser level. In the pressure plate jack-up method, carbon steel plates or concrete pressure plates measuring 500 mm or more in size and 12 mm or more in thickness will be placed, and lifting and horizontal fine adjustments will be performed using linked hydraulic jacks. The standard specifications will include high-density filling of air milk (bubble mortar) into the lower gaps and pressurized injection of high-adhesion epoxy resin into cracks in the concrete foundation.
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Subsidance correction work
Applications/Examples of results
It is used for the restoration of localized differential settlement of existing houses caused by underground obstacles and debris burial, as well as for correcting the tilt of floors and columns. It is ideal for cases where one wants to minimize excessive demolition and reinforcement costs associated with overall construction, while identifying localized causes and performing minimal-scale horizontal lifting. It is suitable for densely populated areas and narrow sites where large construction machinery cannot enter, and for completing restoration work while living in the property without causing relocation or temporary housing. It is widely used as a low-cost proposal for foundation stabilization before renovation and repair work, as well as in geotechnical settlement correction work menus.
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