Compatible with sandy soil at 1000 kN/m². A true method that overcomes narrow sites, large boulders, and groundwater.

Maximum support capacity of 1000 kN. A joint development method by the Ministry of Land, Infrastructure, Transport and Tourism that overcomes high groundwater levels and boulder-laden ground. Technical basis usable for design selection flow and appropriate judgment is disclosed.

This is a technical design document that can be directly used for structural design suitability assessments and confirmation applications. It ensures a high bearing capacity of up to 1000 kN/m2 in sandy soil, allowing for the reduction of foundations for large-scale buildings. Additionally, it presents solutions for challenging conditions that are difficult to address with other methods, such as responding to "high groundwater levels" through flow value management and the removal of "large boulders and rocks" using backhoe construction. A flowchart for selecting construction methods based on support layer depth (GL-3.0m to 6.0m) is also included. [Contents] Overview of the construction method and its reliability Challenges of conventional methods and the technical superiority of this method Design advantages and application conditions Characteristics of quality management

Ground foundation construction method