Settlement correction work | Clarifying local subsidence of buried debris! Pressure-resistant slab jack-up repair
Subsidance correction work
Scientifically identifying localized subsidence of buried waste hidden in gaps of survey points! Maintaining and protecting residential property value with pinpoint underground exploration and pressure plate jacking.
Underground debris and buried waste that cannot be detected at standard representative points in ground surveys can cause irregular localized subsidence over time, becoming a significant factor for price reductions in the sale of used homes and inspection evaluations. Uneven subsidence caused by hidden underground obstacles leads to sudden sinking in specific areas or foundation cracks rather than tilting of the entire building, making it essential to investigate the causes based on objective data rather than relying on intuition. Geotech clearly visualizes the presence of foreign material layers through hand auger probing and pinpoint underground exploration, and conducts numerical analysis of distortions in the exterior and interior using high-precision laser level measurements down to the millimeter. For subsidence correction, we adopt a jack-up method with pressure plates that can be implemented even on narrow sites, accurately returning the structure to a level state by linking small hydraulic jacks to the building's self-weight without putting a burden on the structural body. Furthermore, we combine high-density filling of air bubble mortar (air milk) into underground voids with the injection of high-adhesion epoxy resin into foundation cracks to prevent re-subsidence and establish the seismic and structural safety of the entire building. Geotech's subsidence correction construction menu ensures a balance of reliable quality and asset value protection.
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basic information
This is a technology for identifying the causes of localized subsidence in existing houses (wooden, lightweight steel, cloth foundations, and slab foundations) and for high-precision horizontal correction. Ground obstacle exploration is conducted using hand augers and probing rods for trial excavation and sample verification, and the inclination angle is precisely measured with a high-precision digital laser level. For subsidence correction, structural carbon steel plates with a thickness of 12 mm or more (at least 500 mm square) or concrete pressure plates are installed, and millimeter adjustments are made through synchronized operation of small hydraulic jacks. High-viscosity epoxy resin injection materials are used for foundation crack repairs, and lightweight bubble mortar (air milk) is densely filled under pressure in the gaps beneath the floor.
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Applications/Examples of results
It is used for the restoration of uneven settlement in existing homes caused by buried garbage and debris, as well as for resolving building tilt and malfunctioning fixtures. It is ideal for presenting objective evidence and repairs for foundation cracks and differential settlement pointed out during building inspections or diagnostics before real estate transactions. It is suitable for situations where there is a desire to reattach existing ground defect guarantees or avoid disqualification in housing loan assessments, and where a persuasive repair report for third parties is needed. The settlement correction work menu from Geotech is widely utilized for facilitating transactions of used homes and ensuring the lasting protection of asset value.
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