Ground reinforcement work [Performance certification method] Σ-i method

basic information

Reliable Support Capacity The wing section attached to the tip of the pile has a diameter 2.5 to 3.0 times that of the steel pipe shaft, allowing for significant tip bearing capacity. High Construction Performance The spiral wing section, integrally formed with four excavation blades, can easily penetrate hard supporting layer ground. Environmental Consideration Vibration and noise have been minimized due to the rotational penetration construction method. No excavated soil is generated during construction. Adaptability to Narrow Sites The shape of the tip wings provides high penetration thrust, allowing the use of small construction machinery, making it possible to work without being affected by narrow sites or adjacent environments. Consistent Management System A management system for design and construction has been established by "design and construction management engineers." Additionally, the tip wing section undergoes lot management with sequential numbering to ensure reliability. Trusted Performance The reliable performance of the Σ-i method has been confirmed by obtaining the "Building Technology Performance Certification" from the General Incorporated Foundation Japan Building Disaster Prevention Association.

Price range

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Applications/Examples of results

Applicable Soil Types Foundation Pile Tip Soil: Sandy Soil (including Gravelly Soil), Clayey Soil Maximum Construction Depth 130 times the diameter of the main body from the construction ground surface Applicable Buildings Buildings that meet all of the following conditions 1-3: 1. 3 stories or fewer above ground 2. Height of 13m or less 3. Total floor area of 1,500m2 or less (for single-story buildings, 3,000m2 or less) Retaining walls, etc., of 3.5m or less in height

Detailed information

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  The spiral-shaped wings, integrally formed with four excavation blades, can easily penetrate hard supporting layer ground.