We have prepared a four-stage method ranging from a preliminary assessment based on data to a detailed assessment involving boring investigations.
Liquefaction surveys (liquefaction assessments) are investigations that determine the potential for liquefaction during an earthquake based on the conditions of the ground and water levels. By understanding whether the area is prone to liquefaction and implementing appropriate liquefaction countermeasures, damage can be minimized. GeoTech Co., Ltd. offers four levels of methods, ranging from preliminary assessments based on documentation to detailed assessments involving boring surveys. 【Features of GeoTech】 - Experienced analysis staff (3 licensed geological surveyors) - Many employees hold qualifications as residential ground engineers and chief engineers from the NPO Housing Ground Quality Association - Ground consulting before and after surveys - Achievements in ground surveys and ground reinforcement work in the metropolitan area are compiled in the Ground Information Provision System (GEODAS), enhancing diagnostic accuracy through database creation and comparison with neighboring data - Courteous service to clients For more details, please contact us or download the catalog.
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**Liquefaction Survey Product Types** ○ Overview liquefaction assessment of residential land based on document research → Mainly targets surveys of two-story wooden residential land → Rough assessment of liquefaction potential based on topographic maps, liquefaction maps (hazard maps) created by public organizations, and liquefaction history maps ○ Liquefaction assessment of residential land using Swedish sounding tests → Mainly targets surveys of residential land up to three stories of wooden construction → Conducts a simplified assessment of the ground based on Swedish sounding test results and groundwater levels, along with microtopography classification ○ Liquefaction assessment of residential land through soil quality surveys → Mainly targets surveys of residential land up to three stories of wooden construction → A more precise survey method that reflects soil grain size test results in addition to liquefaction assessment based on Swedish sounding tests ○ Detailed liquefaction assessment (according to building foundation structural design guidelines) → Calculates FL and PL values from boring surveys, standard penetration tests, and soil quality tests to determine the liquefaction potential of each soil layer and the overall degree of liquefaction of the ground ● For more details, please contact us or download the catalog.
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