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  3. スリーエスG工法協会 工法協会本部
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スリーエスG工法協会 工法協会本部

EstablishmentJanuary 2008
number of employees190
addressOkayama/Okayama-shi Minami-ku/Fukugicho 18-18
phone086-265-0891
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last updated:Sep 07, 2019
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Three S G Method Association Management Headquarters, Iwasui Development Co., Ltd. Company Profile

We offer comprehensive proposals for building a solid foundation and creating a lifelong life plan!

The Iwasui Development Co., Ltd., which operates the Three S G Method Association, selects appropriate reinforcement methods according to the use of the ground through proper investigation and design, and strengthens weak ground and prevents water leakage through methods such as the Iwasui Grout Method and the Three S G (Semi-Pile) Method. To accurately respond to the diversifying needs of the times, we are also advancing research and development on various types of ground, playing a pioneering role in foundational ground. 【Business Areas】 ■ Grouting Division ■ High-Pressure Injection Division ■ Ground Improvement Division ■ Foundation Pile Division ■ Civil Engineering Division ■ Pushing Method Division *For more details, please refer to the PDF materials or feel free to contact us.

  • Ground foundation construction method
  • Civil Engineering Method
  • Ground improvement

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"Three S G Method" A deep mixing treatment method that pursues economic efficiency and high quality.

Over 8,700 construction achievements across all 47 prefectures in Japan! Thanks to our original construction quality management method, quality verification can be done as early as one day after construction!

In the construction method of the mechanical stirring type deep mixing treatment using conventional cement-based solidifying material slurry, a new technology has been introduced by installing the cement milk discharge ports above and below the stirring blades. During excavation, slurry is injected from the lower discharge port, and during extraction, it is injected from the upper discharge port, maximizing stirring efficiency and enabling the creation of high-quality improved bodies with minimal strength variation. (The stirring device has been patented.) Furthermore, as a result of pursuing quality improvement and efficiency enhancement, significant improvements have been realized through this new technology. In 2007, it obtained a construction technology performance certification from the Japan Building Disaster Prevention Association as the "Three S G Method." In 2009, the first revision was made, and the "Three S G-cube Method" (G-Cube Method) was developed for small-scale buildings. In 2011, a second revision was made based on accumulated construction results, achieving an expansion of the application range and a significant improvement in cost performance. Efforts are also being made to enhance practical training within the method association. Various training programs for obtaining certification have been recognized as eligible for subsidies from the Human Resource Development Support Grant (Ministry of Health, Labour and Welfare) and the Small and Medium Enterprises Capability Development Grant (JMAF Foundation), establishing an educational system for method engineers.

  • Ground foundation construction method
  • Civil Engineering Method
  • Ground improvement

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[Recruitment of Construction Method Association Members] Unique Mixing Mechanism for Deep Mixing Treatment - Three S G Method

Construction achievements: Over 8,700 cases in all 47 prefectures! We are currently recruiting members for the construction method association (holders of construction implementation rights)!

To enhance our sales and construction system, we are currently recruiting members for our construction method association (those who have obtained construction implementation rights)! Please feel free to contact us regarding areas and conditions! *We are particularly focusing on recruitment in the Tohoku and Hokuriku areas.* □ By acquiring our unique construction method technology, you can differentiate yourself from other companies. □ With our comprehensive technical support and skill training system, we can cultivate high-level technicians. □ We support your business expansion by utilizing our nationwide network of association members. The Three S G Method involves attaching a special excavation and mixing wing to a dedicated machine (crawler type). During excavation, slurry is ejected from the lower discharge port, and during retrieval, the lot is rotated in reverse to spray slurry from the upper discharge port. By always positioning the slurry discharge in front of the direction of the special excavation and mixing wing, we enhance mixing efficiency and improve the quality of the modified body. 【Features】 ● Our unique mixing mechanism (patented) achieves a coefficient of variation of 25% for sandy soil, clayey soil, and loam ground. ● Our original strength verification system allows for economical quality control. ● Column diameters range from φ400mm to φ1300mm. ● Applicable for improvement lengths of up to 20.5m.

  • Ground foundation construction method
  • Civil Engineering Method
  • Ground improvement

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