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Introducing the "Liquefaction Prevention Mechanism - Soft Sand Layer + Gravel Pile." By driving multiple gravel piles, the house is supported in a composite manner by the piles and the ground. The gaps in the gravel piles allow water to pass through easily, effectively absorbing water pressure and preventing liquefaction in advance. Additionally, liquefaction does not occur after an earthquake, and the ground remains stable. 【Features of Gravel Piles】 ■ Liquefaction countermeasures ■ Effective even in heavy rain ■ Regeneration of water circulation *For more details, please refer to the PDF materials or external links, or feel free to contact us.

• Ground foundation construction method
• Special Construction Method
• Earthquake-resistant construction method

We will introduce liquefaction experiments assuming liquefaction countermeasure gravel piles. By laying gravel directly under and around the house, the dissipation effect of excess pore water pressure dramatically increases, preventing changes in the ground due to liquefaction from being transmitted directly, thus minimizing the impact of differential settlement. Gravel allows water to pass easily through its gaps, so the water pressure (water) that rises due to seismic shaking is discharged to the outside through the gravel piles. This suppresses the effects of liquefaction. 【Features】 ■ Gravel is laid directly under and around the house ■ The dissipation effect of excess pore water pressure dramatically increases ■ Changes in the ground due to liquefaction are not transmitted directly ■ The impact of differential settlement is minimized ■ Water pressure (water) that rises due to seismic shaking is discharged to the outside through the gravel piles *For more details, please refer to the PDF materials or external links, or feel free to contact us.

• Ground foundation construction method
• Special Construction Method
• Earthquake-resistant construction method

"Liquefaction Guarantee with Ground Guarantee" involves conducting a liquefaction assessment and, based on the results, proposing appropriate ground improvement measures as necessary, while also guaranteeing damages to buildings that have experienced differential settlement due to liquefaction caused by earthquakes. By implementing the "High-Speed Method S-type" on residential ground with a risk of liquefaction, it is possible to obtain the "Liquefaction Guarantee with Ground Guarantee" from House Warranty. *Depending on the results of the liquefaction assessment, it may be possible to join the liquefaction guarantee with ground guarantee even with just the implementation of the High-Speed Method. [Features of High-Speed Method S-type] ■ Forms columnar bodies of crushed stone (crushed stone piles) in the ground while compacting natural crushed stone ■ Creates a composite and robust ground with the existing ground ■ Dissipates pore water pressure during liquefaction to reduce liquefaction damage *For more details, please refer to the PDF materials or external links, or feel free to contact us.

• Ground foundation construction method
• Special Construction Method
• Earthquake-resistant construction method

Did you know that in cases of weak ground, despite the ground reinforcement work being done, ground accidents actually occur more frequently than fires? Even if you go through the trouble of ground improvement and reinforcement work, if your house tilts due to differential settlement, it is the same as having a defective house. Because the ground, which cannot be seen, is what truly supports your home, it is essential to choose ground improvement and reinforcement work that genuinely provides support. [Examples of Ground Accidents] - Accidents with slab foundations and surface improvement - Cases where cement does not set properly - Piles not reaching the hard ground - If the thickness of soft ground and hard ground differs, the friction will also differ *For more details, please refer to the PDF materials or external links, or feel free to contact us.

• Ground foundation construction method
• Special Construction Method
• Earthquake-resistant construction method

The ground issues that are often overlooked in residential construction have now become a social problem. Ground improvement that focuses solely on strength and cost has left significant burdens on our land. For those considering residential construction in the future, please take another look at your land (ground). 【Conventional methods with many issues (example)】 ■ Surface improvement method (cement mixing improvement) ■ Column improvement method (cement column improvement) ■ Steel pipe piles *For more details, please refer to the PDF materials or external links, or feel free to contact us.

• Ground foundation construction method
• Special Construction Method
• Earthquake-resistant construction method

The Great East Japan Earthquake highlighted the damage caused by tsunamis, but the significant damage in the metropolitan area was due to "liquefaction." Liquefaction occurred not only in coastal reclaimed land but also in inland areas, affecting residential neighborhoods. This frightening liquefaction can be prevented in advance through our company's "ground improvement." "Ground improvement" refers to the construction work done to enhance the stability of the ground on which buildings are constructed, making it less susceptible to ground subsidence and differential settlement by artificially improving the ground. There are various methods for improving the foundation ground, including crushed stone pile method, surface improvement method, columnar improvement method, and steel pipe pile method. Our company recommends the "HySPEED method," which uses only natural crushed stone as a material, making it an environmentally friendly method. 【Features of the HySPEED Method】 ■ Strong against seismic shocks ■ Environmentally beneficial method ■ No waste disposal costs incurred ■ Contributes to the Earth through reuse ■ Liquefaction countermeasure method *For more details, please refer to the PDF materials or feel free to contact us.

• Ground foundation construction method
• Special Construction Method
• Earthquake-resistant construction method

The HySPEED method is a ground improvement technique that differs from existing methods by not using pre-determined piles or conducting work without reinforcing the ground. Instead, it constructs crushed stone piles one by one with reliable execution tailored to the specific ground, combining the support capacity of the crushed stone piles with that of the surrounding ground to enhance overall ground support. The new technology features a piston valve (at the drill tip) that compacts the construction material (crushed stone). Thanks to the hammer compaction function of the piston valve, the construction time is significantly reduced compared to conventional methods. After the crushed stone pile installation, foundation work can commence immediately. 【Features】 - Strong against seismic shocks - No waste disposal costs incurred - Contributes to the planet through reuse - Perfect construction guarantee - Reduces CO2 emissions by 5000 kg For more details, please contact us or download the catalog.

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