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  5. Ground foundation construction method
  6. Piled Ground Reinforcement Method "Σ-i Sigma-I"

Piled Ground Reinforcement Method "Σ-i Sigma-I"

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last updated:Mar 02, 2016

設計室ソイル
設計室ソイル
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Advanced piles protect buildings! Ground reinforcement for small-scale structures.

The "Σ-i Method" is a ground reinforcement technique for small-scale buildings such as houses, which involves driving a pile equipped with four cutting blades and a spiral wing at the tip into the ground while rotating. This method consolidates all necessary elements for ground reinforcement, ensuring high pile performance, reliability and safety during construction, as well as consideration for the environment and neighboring areas. Due to the high penetration thrust generated by the shape of the tip wings, it allows for the use of compact construction machinery, enabling construction without being affected by narrow sites or adjacent environments. 【Features】 ○ Reliable bearing capacity - The wing section attached to the tip of the pile can achieve a bearing capacity that is 2.5 to 4.0 times larger than the diameter of the steel pipe shaft. ○ Adaptable to various ground conditions - Suitable for all types of ground, including sandy, gravelly, and clayey soils, making it a highly versatile ground reinforcement method. ○ Environmental consideration - The rotational penetration construction minimizes vibration and noise, and there is no generation of excavated soil during construction. ○ High construction performance - The spiral wing section, molded integrally with the four cutting blades, can easily penetrate hard supporting layer ground. ○ Consistent management system *For more details, please contact us or download the catalog.

    Ground foundation construction method
01_sigma.jpg

Piled Ground Reinforcement Method "Σ-i Sigma-I"

01_sigma.jpg
01_sigma.jpg
  • Related Link - http://www.soil-design.co.jp/sigma.html

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【Application Scope of the Σ-i Method】 ○Applicable Structures → Retaining walls up to 3.5m in height → Buildings with up to 3 stories above ground → Building height up to 13m → Eaves height up to 10m → Total floor area up to 1500m2 (for single-story buildings, up to 3500m2) ○Applicable Ground → Types of foundation ground: Sandy soil (including gravelly soil) and clayey soil ○Maximum Construction Depth → 130D from the construction ground surface (D: shaft diameter) ○Application Range Based on Ground Investigation → The maximum construction depth for the ground investigated by the Swedish sounding test (hereinafter referred to as SWS test) is set at 15m, and investigations deeper than this will be conducted using the ram sounding test (hereinafter referred to as RAM test). ● For more details, please contact us or download the catalog.

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Sigma-i Pile Reinforcement Method

Sigma-i Pile Reinforcement Method

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設計室ソイル

設計室ソイル

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Soil Design Office Co., Ltd. develops foundation and ground investigation, design, and various construction methods suitable for individual houses, based on advanced technology and extensive experience while understanding all ground conditions. Through consulting, we are also actively engaged in research and development of investigation, analysis, and countermeasure technologies targeting liquefaction to support the construction of earthquake-resistant homes.

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