Site Investigation | Structural Calculation Assessment of Uneven Ground at the Site of a Demolished Wooden Apartment

Quantifying the uneven ground hidden in the site of the demolished building through multi-point measurements, and supporting the compliance of wooden apartment buildings with structural calculations and analyses for safe design.

This technology is a ground diagnosis service that precisely measures the risk of uneven ground subsidence remaining at the site of demolished wooden apartment buildings, facilitating structural calculations and building confirmation applications. In sites after demolition, differences in ground strength are likely to occur due to inadequate backfilling and remnants of old foundations, posing a risk of differential settlement after new construction. This measurement method uses multi-point screw weight penetration tests (SWS tests) to finely measure penetration resistance values at various depths, clearly data-fying the allowable bearing capacity of the entire site. From the obtained measurement results, we simulate the estimated deformation angles (tilt of the building) between measurement points and quantitatively verify the impact on the superstructure. By conducting analyses in accordance with the Ministry of Land, Infrastructure, Transport and Tourism notifications and the latest guidelines from the Architectural Institute of Japan, we enable smooth data reflection in structural calculation documents, allowing for the seamless progression of review procedures by designated confirmation inspection agencies. This allows for a rational foundation design that eliminates excessive reinforcement work, providing high structural safety and reliable evidence.

Site and ground investigationGeological Survey CompanyGeological Survey