Ground reinforcement work | Trust in GBR-C performance certification and high-quality ETP-G method

Reliable technical expertise in obtaining GBRC performance certification! The ETP-G method protects buildings through rational calculations based on SWS testing and an ISO-compliant quality management system.

Ensuring the long-term safety of buildings requires the selection of objective and highly reliable ground reinforcement methods. The ETP-G method provided by Geotech is a highly reliable rotary-driven steel pipe pile method that has obtained the Building Technology Performance Certification from the Japan Building Disaster Prevention Association (GBRC Performance Certification No. 09-19). This method allows for the calculation of allowable vertical bearing capacity using clear formulas based on standard ground investigation results such as SWS tests and SRS tests, enabling evidence-based safe foundation design. Its unique structure, featuring a disc-shaped enlarged wing at the tip and an excavation auxiliary bit, demonstrates high penetration capability and tip bearing capacity simultaneously, providing strong support for small-scale buildings with three stories or less and a total floor area of 1,500 square meters or less, as well as retaining walls. The use of a no-dirt-disposal construction method that does not require cement eliminates the need for soil disposal and reduces environmental impact through low noise and low vibration. Furthermore, under a quality management system compliant with ISO 9001, our construction management technical department conducts internal controls, and by ensuring on-site construction management by qualified personnel along with thorough pre-operation inspections and quality checks, we provide a high-precision construction system that reliably prevents differential settlement.

Other civil engineering worksResidential foundationsRenovation and repair methods