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  6. Ground Investigation | Assurance of Foundation Specifications for Weak Ground with a Ground Guarantee System and Strict Assessment

Ground Investigation | Assurance of Foundation Specifications for Weak Ground with a Ground Guarantee System and Strict Assessment

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Boring survey

last updated:Sep 10, 2026

ジオテック
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Smartly explain the ground guarantee system and strict quality certification! Present the peace of mind of a guarantee of up to 50 million yen to enhance the trust of clients and increase the contract rate.

In determining foundation specifications for residential construction on weak ground, it is extremely important to ensure the safety of the building while also alleviating the owner's concerns about the risk of differential settlement after handover. Insufficient explanations regarding the necessity of ground reinforcement and the type of foundation can lead to contract cancellations just before signing or troubles after handover. This document provides a detailed introduction to the know-how of "smart explanation techniques," which combines a rigorous certification based on the quality management system (QMS) under the international standard ISO 9001 and a housing ground guarantee system of up to 50 million yen. Geotech utilizes its unique "three-item eight-element" evaluation criteria and a vast database of 100,000 analyses conducted annually, with qualified professional staff meticulously reviewing every case. We present optimal specifications such as slab foundations and strip foundations that eliminate excessive ground improvement based on solid technical evidence. By providing highly transparent data along with a robust guarantee system, we offer absolute peace of mind to the owners and fully support builders in achieving high contract rates and enhancing brand value.

    Pile and foundation workGround foundation construction methodGeological Survey Company
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Ground Investigation | Assurance of Foundation Specifications for Weak Ground with a Ground Guarantee System and Strict Assessment

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  • Related Link - https://www.jiban.co.jp/service/survey/boring.htm
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The specifications and specs described in this document comply with field measurement data from screw weight penetration tests (SWS tests) and SDS tests, as well as the quality control processes under ISO 9001 certification. It includes a data verification system by qualified professionals (such as residential foundation chief engineers and geological survey engineers), stress propagation and settlement analysis algorithms based on foundation depth, and the application criteria for a residential foundation warranty system of up to 50 million yen (for a maximum of 10 years, extendable). The judgment report will include visualized estimated underground cross-section diagrams and future settlement prediction results.

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This can be utilized as a tool for determining foundation specifications during the planning of newly built custom homes and subdivision homes, as well as for risk communication directed at clients. It is ideal for providing technical explanations regarding the risk of differential settlement on weak ground, disclosing safety justifications for adopting a flat foundation, and offering a sense of security combined with a ground warranty system. It can be used as a negotiation tool by sales and design representatives of home builders and construction companies to alleviate customer concerns and dissatisfaction, thereby significantly increasing the contract signing rate and building long-term trust relationships.

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Ground Investigation | Assurance of Soft Ground Foundation Specifications with a Ground Guarantee System and Strict Assessment / Achieving Satisfactory Proposals for Clients with a 50 Million Yen Guarantee and High-Quality Assessment | Geotech

Ground Investigation | Assurance of Soft Ground Foundation Specifications with a Ground Guarantee System and Strict Assessment / Achieving Satisfactory Proposals for Clients with a 50 Million Yen Guarantee and High-Quality Assessment | Geotech

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Plate load test

Plate load test

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Site Investigation | A Smart Foundation Explanation Technique for Weak Soils that Clears Building Confirmation Review / A Guide to Facilitate Confirmation Applications with Structural Calculation-Linked Judgments | Geotech

Site Investigation | A Smart Foundation Explanation Technique for Weak Soils that Clears Building Confirmation Review / A Guide to Facilitate Confirmation Applications with Structural Calculation-Linked Judgments | Geotech

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