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This brochure explains the sinking correction work that resolves dizziness and health issues by correcting floor tilts without moving or temporarily relocating, allowing residents to continue their daily lives as usual. Millimeter-level floor inclinations that occur in homes continuously stress the human vestibular system, leading to unexplained dizziness and autonomic nervous system disorders. Our company conducts a preliminary Swedish-style sounding (SWS) survey and precise level measurements to objectively visualize the depth of ground weakness and the mechanisms of differential settlement. The construction procedure involves evenly placing compact hydraulic jacks directly under the foundation and safely lifting and correcting the building while implementing measures to follow the piping. We use low-noise, low-vibration quiet equipment for the work, allowing us to proceed quietly without causing noise issues, even in narrow sites close to property boundaries. After lifting, we combine steel pipe pile driving, i-LIFT, and the stubborn old man method to effectively prevent future re-settlement, thereby restoring a safe and healthy living environment.

The debris and buried garbage hidden in the gaps of ground investigation data can cause irregularities in the ground, leading to significant localized subsidence where only parts of a building settle after construction or over time. Even if no abnormalities are detected in the preliminary investigation data, localized softening can result in dangerous distortions or structural cracks in the foundation and exterior walls. At Geotech, we conduct pinpoint underground exploration and situation identification through hand auger drilling to accurately clarify the causes of subsidence and the extent of abnormalities. In the repair process, we apply a pressure plate jack-up method using compact thick steel plates, allowing for precise millimeter-level horizontal lift-ups with small hydraulic jacks, even in confined spaces, using the building's weight as a counterforce. Furthermore, we fill any voids or cracks that occur after lifting with highly fluid air bubble mortar (air milk) and combine this with high-viscosity epoxy resin injection into the uneven foundation structure, achieving improved foundation strength and preventing re-subsidence. With Geotech's extensive subsidence correction construction menu, we provide structural repairs that ensure peace of mind while living in the building.

Underground debris and buried waste that cannot be captured at representative points during ground surveys can cause irregular localized subsidence over time, significantly impacting the structural safety of buildings, regardless of whether they are new or old. When underground obstacles hidden between standard SWS tests are the cause, rapid subsidence or structural cracks occur in specific areas rather than the entire building tilting, necessitating an investigation based on scientific data rather than intuitive repairs. Geotech visualizes the location and extent of obstacles through hand auger drilling 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 employ a jack-up method with pressure plates that can be implemented in narrow spaces, synchronously driving small hydraulic jacks using the building's own weight as a reaction force, allowing for precise leveling without burdening the structure. Additionally, we combine high-density filling of air bubble mortar (air milk) into underground voids with high-adhesion epoxy resin injection into foundation cracks to prevent re-subsidence and establish the overall seismic and structural safety of the building. Geotech's comprehensive subsidence correction service menu supports a safe living environment.

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.

Buried waste such as rubble and construction debris lurking in the gaps of ground investigation data can cause irregular ground softening due to aging and uneven load distribution, leading to significant localized subsidence where only parts of a building sink. Since representative point data from tests like SWS cannot capture this, sudden structural cracks or dangerous deformations may occur at specific locations of the shallow foundation. At Geotech, we conduct hand auger drilling and pinpoint subsurface exploration to accurately visualize the location and extent of buried waste as objective numerical data. In the repair process, we apply a space-saving jack-up method using pressure plates, synchronously driving small hydraulic jacks with the building's own weight as a reaction force, and performing precise horizontal adjustments in millimeter increments under constant high-precision laser monitoring. After the lift-up is completed, we inject high-flow air-entrained mortar (air milk) into the voids created under the floor to equalize the ground pressure over the area, while also pressurizing and sealing high-adhesion epoxy resin into the damaged shallow foundation structure to restore its integrity and structural strength beyond that of when it was newly built. Through Geotech's advanced subsidence correction construction menu, we establish lasting structural safety at the foundation level.

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.

Unforeseen underground debris and buried waste that cannot be anticipated during ground surveys can cause irregular localized subsidence, where only part of the building sinks. Implementing comprehensive piling or large-scale ground improvement can incur significant construction costs, so a rational correction 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 underground exploration, thoroughly cutting unnecessary preliminary survey costs and overall construction expenses. For horizontal adjustment, we apply a jack-up method using compact thick steel plates. Even in narrow sites where the transport of temporary machinery is difficult, we achieve precise lifting in millimeter increments using small hydraulic jacks, leveraging the building's 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 for cracks in the foundation, we also use high-viscosity epoxy resin injection. GeoTech's subsidence correction construction menu provides reliable restoration at a low cost.

Buried waste such as debris and construction waste hidden in the gaps of ground survey data poses a significant risk factor for unexpected localized subsidence after the handover of a house or in the early stages of a new construction. Since these issues cannot be fully captured by representative points in preliminary surveys, cases often arise where rapid inclinations or structural cracks occur in parts of the mat foundation, leading to disputes with homeowners. At Geotech, we conduct hand auger drilling and pinpoint subsurface exploration to accurately visualize the extent of buried waste and the causes of subsidence as objective numerical data. In the repair process, we apply a space-saving jack-up method for pressure plates, synchronously driving small hydraulic jacks using the building's own weight as a reaction force, and performing precise horizontal adjustments in millimeter increments under constant high-precision laser monitoring. After the lift-up is completed, we inject high-flow air bubble mortar into the voids created under the floor to equalize the ground pressure across the surface, while also pressurizing and sealing high-adhesion epoxy resin into the damaged mat foundation structure to restore its structural strength. Geotech's subsidence correction construction menu strongly supports builders in their after-sales service.

Buried waste such as rubble and construction debris hidden in the gaps of ground investigation data can cause uneven settlement over time, creating excessive tensile stress on urban gas and water supply pipes buried directly beneath buildings. To prevent serious equipment issues like pipe breaks and leaks, advanced technology is required to accurately identify the causes without halting the operation of homes and businesses, and to level the ground. At Geotech, we clearly visualize the relationship between underground pipes and buried waste through hand auger drilling and pinpoint subsurface exploration, objectively identifying the causes of settlement. For leveling, we employ a space-saving pressure slab jack-up method, using the building's own weight as a reaction force to carefully lift in millimeter increments with small hydraulic jacks. By continuously monitoring the displacement of the piping with laser measurements during construction, safe horizontal restoration can be achieved without interrupting infrastructure functions. Furthermore, we combine pressurized filling of air milk into underground voids with high-viscosity epoxy resin injection into foundation cracks to prevent re-settlement and ensure long-term equipment protection. Geotech's settlement correction construction menu maintains a safe living environment.

When planning large-scale renovations or seismic reinforcement work, debris and buried waste hidden in the gaps of ground survey data can pose a hidden risk of uneven settlement, leading to floor re-tilting or fixture malfunctions after the completion of the construction. No matter how much the upper structure is renewed, if the foundation and the underlying ground's softening are left unaddressed, the building's inherent longevity cannot be achieved. At Geotech, we conduct hand auger drilling and pinpoint underground exploration as part of the ground and foundation diagnosis before starting renovations, visualizing the extent of buried waste and settlement factors as objective numerical data. In the leveling process, we apply a pressure plate jack-up method that does not require extensive demolition work, using small hydraulic jacks to achieve precise horizontal restoration in millimeter increments, leveraging the building's own weight as a reaction force. After lifting, we pressure-inject high-flow air bubble mortar (air milk) into the voids under the floor to equalize the ground pressure, and we encapsulate the damaged cloth foundation structure with high-adhesion epoxy resin to restore structural strength beyond that of new construction. Geotech's settlement correction work menu enhances the overall quality and durability of the renovation.

In densely populated areas with closely packed residential buildings or near property boundaries, hidden buried waste or construction debris between representative points of pre-ground surveys can cause significant problems by leading to irregular uneven settlement. In environments where site space is limited, it is often impossible to bring in large improvement machinery, and concerns about noise and vibrations from construction can force sites to abandon necessary measures due to friction with neighbors. GeoTech employs portable hand auger drilling and pinpoint subsurface exploration to accurately visualize the range of foreign objects lurking near boundaries and the settlement gradient as objective data. In the horizontal correction process, a jack-up method using pressure-resistant slabs is applied, allowing construction to be carried out with minimal working space from the property boundary. Using the building's own weight as a reaction force, small hydraulic jacks perform precise lifting in millimeter increments, avoiding encroachment on neighboring properties and unnecessary demolition work. After lifting, high-flow air bubble mortar is injected into the underground voids, and high-viscosity epoxy resin is also used for the foundation structure where unevenness has occurred. Through GeoTech's settlement correction construction menu, we provide reliable construction that takes into account the concerns of neighbors, even in narrow and densely populated areas.

In real estate sales assessments, the condition of the building is directly linked to its asset value, making the floor's slope, as pointed out in inspections, an important concern. The slope of the floor can not only cause dizziness or health issues for residents but may also indicate structural problems with the building, potentially affecting the buyer's willingness to purchase. Geo-tech settlement correction work addresses these challenges and enhances the reliability and appeal of used homes. 【Usage Scenarios】 - During the sales assessment of used homes - Properties where floor slope has been pointed out in inspections - Cases where the cause of residents' health issues (such as dizziness) is suspected to be the floor slope - When proposing renovations aimed at increasing the building's asset value 【Effects of Implementation】 - Improved property evaluation during sales assessments - Providing reassurance to potential buyers - Enhanced comfort for residents - Long-term maintenance of the building's asset value

In the construction industry, maintaining the safety and asset value of buildings is essential. In particular, floor inclinations caused by uneven ground subsidence can affect not only the structural integrity of the building but also the health of its occupants. Even millimeter-level floor inclinations can lead to health issues such as dizziness and headaches. At Geotech, we provide subsidence correction work that enhances the asset value of buildings and improves living comfort through high-precision measurements and low-noise hydraulic jack methods. 【Usage Scenarios】 - Repairing issues identified during inspections prior to the sale of used homes - Increasing added value in renovation proposals - Resolving health issues for residents (such as dizziness) - Enhancing the asset value of buildings 【Benefits of Implementation】 - Restoration of the building's level state - Improvement of residents' health conditions - Increased reliability in real estate transactions - Maintenance and enhancement of the building's asset value

In the remodeling industry, the tilt of floors can be a challenge in the buying and selling of used homes and in renovation proposals. Floor tilt can lead to health issues for residents, such as dizziness and headaches, and can also affect the asset value of the building. At Geotech, we precisely restore floor tilt with high-precision measurements and low-noise hydraulic jacking methods, taking the building's structure into consideration. This improves the living environment and enhances the asset value of the building, increasing the reliability of renovation work. 【Usage Scenarios】 - Renovation of used homes - When floor tilt is pointed out during an inspection - When residents' health issues (such as dizziness and headaches) may be caused by floor tilt - Renovations aimed at increasing the asset value of the building 【Benefits of Implementation】 - Improvement of residents' health and comfort - Maintenance and enhancement of the building's asset value - Increased reliability of renovation work - Long-term peace of mind through prevention of re-sinking

In transactions involving used houses and renovation proposals, floor tilt can be a significant issue. This tilt not only causes dizziness and health problems for residents but also affects the asset value of the building. At Geotech, we objectively assess the condition of the building through high-precision measurements and low-noise hydraulic jacking methods, allowing for precise leveling restoration down to the millimeter. This leads to improvements in the living environment and increases in asset value. 【Usage Scenarios】 - When floor tilt is pointed out during an inspection of a used house - When it is believed that residents' dizziness or health issues are caused by floor tilt - When wanting to improve the condition of the building in a valuation for buying or selling a used house - When considering repairs to the foundation of the building as part of a renovation proposal 【Benefits of Implementation】 - Resolution of health issues for residents (such as dizziness and headaches) - Increase in the asset value of the building - Enhanced reliability in real estate transactions - Improvement in living comfort

In the field of foundation repair, cases where the slope of the floor becomes an issue are often seen in the buying and selling of used homes and in renovation proposals. The slope of the floor is caused by differential settlement of the building and can lead to health problems for residents and a decrease in the asset value of the property. In response to these challenges, our settlement correction work utilizes a low-noise hydraulic jack method to enhance the asset value of the building and improve the living environment. 【Usage Scenarios】 - When floor slope is pointed out during an inspection of a used home - When the slope of the floor becomes a hurdle during renovation proposals - When the cause of residents' dizziness or health issues is suspected to be the floor slope 【Effects of Implementation】 - Increase in the asset value of the building - Improvement in residents' living comfort (resolution of dizziness issues) - Enhanced reliability in real estate transactions and renovation work

In the ground investigation industry, identifying the causes of differential settlement in buildings and accurately assessing the resulting floor tilt is essential. Particularly, floor inclinations that affect the asset value of the building and the health of its residents must be objectively understood, and appropriate measures taken. Our settlement correction work addresses these challenges through high-precision surveys and low-noise construction methods. 【Usage Scenarios】 - Addressing inspection issues in the buying and selling assessment of used homes - Resolving floor inclinations that cause dizziness or health issues for residents - Proposing renovations aimed at increasing the asset value of the building 【Effects of Implementation】 - Precise leveling restoration of floor inclinations to the millimeter - Low-noise, short construction periods, allowing work to be done while residents remain in the building - Long-term stabilization of the building through measures to prevent re-settlement

In structural diagnosis by design offices, it is essential to accurately assess the integrity of buildings and predict future risks. In particular, floor inclinations caused by uneven ground settlement are an important sign indicating structural issues, which can affect the safety of residents and the asset value of the building. Objectively understanding these issues and proposing appropriate measures is crucial for enhancing the reliability of the design office. Our settlement correction work provides professional techniques and data-driven solutions to address these challenges. 【Usage Scenarios】 - Identifying structural issues during inspections of used houses - Investigating the causes of floor inclinations during structural diagnosis of existing buildings - Proposing measures to enhance the asset value of buildings in renovation proposals 【Effects of Implementation】 - Improved accuracy of structural diagnosis and provision of objective data - Alleviation of concerns regarding the safety and livability of buildings - Increased reliability in transactions involving used houses

In the demolition industry, accurate situational understanding is required before the demolition of a building. Particularly in the assessment of used houses for sale and proposals for renovations, the tilt of the floor serves as an important indicator of the building's condition. Floor inclinations caused by uneven ground subsidence may suggest structural problems within the building, potentially affecting demolition plans and assessment prices. GeoTech's subsidence correction work provides information to objectively grasp floor inclinations through high-precision measurements, allowing for an accurate evaluation of the building's condition. This supports precise preliminary investigations before demolition and contributes to smooth transactions and the development of appropriate demolition plans. 【Usage Scenarios】 - Preliminary investigations before the demolition of used houses - Objective understanding of the building's tilt condition - Provision of foundational information during sales assessments and renovation proposals 【Benefits of Implementation】 - Accurate understanding of the building's condition before demolition - Provision of objective data for sales assessments - Improved accuracy of demolition plans

In the construction industry, when planning large-scale renovations or seismic reinforcement work, debris and buried waste hidden in the gaps of ground survey data can pose a hidden risk of uneven settlement, leading to floor re-tilting or issues with fixtures after the completion of the work. No matter how much the upper structure is renewed, if the foundation or the ground beneath is left weakened, the building's inherent longevity cannot be achieved. At Geotech, we conduct hand auger drilling and pinpoint subsurface exploration as part of the ground and foundation diagnosis before starting renovations, visualizing the extent of buried waste and settlement factors as objective numerical data. In the leveling process, we apply a pressure plate jack-up method that does not require extensive demolition work, using small hydraulic jacks to achieve precise horizontal restoration in millimeter increments, leveraging the building's own weight as a counterforce. After lifting, we pressure-inject high-flow air bubble mortar into the voids beneath the floor to equalize the ground pressure, and we encapsulate the damaged cloth foundation structure with high-adhesion epoxy resin to restore structural strength beyond that of new construction. Geotech's settlement correction work menu enhances the overall quality and durability of the renovation. 【Usage Scenarios】 - When ground reinforcement and uneven settlement correction are needed - When there is a risk of settlement due to buried waste hidden in the gaps of ground survey data

In the real estate sector, the stability and durability of buildings are required to maintain the long-term asset value of properties. In particular, uneven settlement caused by overlooked buried debris, often found in gaps in ground survey data, can lead to building tilting and structural issues, posing a risk of decreased asset value. At Geotech, we conduct hand auger drilling and pinpoint subsurface exploration as part of ground and foundation diagnostics before renovations, visualizing the extent of buried debris and settlement factors as objective numerical data. In the leveling process, we apply a jack-up method using pressure plates that does not require extensive demolition work, allowing for precise millimeter-level horizontal restoration using small hydraulic jacks that leverage the building's own weight. After lifting, we pressure-inject high-flow air-entrained mortar (air milk) into the voids beneath the floor to equalize ground pressure, and we encapsulate damaged fabric foundation structures with high-adhesion epoxy resin to restore structural strength exceeding that of new construction. Geotech's settlement correction construction menu enhances the overall quality and durability of renovations, contributing to the maintenance of asset value. [Usage Scenarios] - Checking the ground and foundation condition before purchasing a used property - Stabilizing buildings before renovations or refurbishments - Maintaining and improving long-term asset value - Resolving building tilting and floor irregularities