About Us

The large-scale liquefaction caused by the Great East Japan Earthquake resulted in widespread and massive damage, including toppled buildings and road surface cave-ins. In the Tokai, Tonankai, and Nankai regions, forecasts indicate the very high likelihood of an earthquake with a seismic intensity of lower 6 within the next 30 years. An earthquake of this scale could strike at any time. We achieve total cost savings for our clients through proprietary technologies that allow aseismic reinforcement and liquefaction countermeasure works to be executed even from limited spaces on the ground, leaving existing buildings unaffected.

A number of unprecedented disasters, including the Great Hanshin Earthquake, Chuetsu Earthquake, and Great East Japan Earthquake, have occurred successively in recent years. Experts state that similar major earthquakes may occur at any time in the Tokai, Tonankai, and Nankai regions. Recent recurring sediment disasters caused by torrential rains have caused serious damage and fatalities. Many locations remain keenly vulnerable to such disasters.
With our accumulated know-how, we can offer comprehensive disaster preparedness solutions.

Historic structures, valuable as cultural assets, often face numerous problems. After long periods of time, foundations may sink or buildings may age.
We handle renovations that preserve such historic structures, making the most of long-established underground construction technologies and execution skills, including Jet Grouting. Our track record includes the preservation and rebuilding of the Osaka Branch of the Bank of Japan in 1978 and the preservation and restoration of the Marunouchi station building of the Tokyo Station in more recent years.

Damage caused by natural disasters, including earthquakes, typhoons, abnormal torrential rains, and tornadoes, has grown increasingly severe in recent years.
To contribute to the fastest possible recovery in stricken areas, we work as partners in emergency restoration efforts involving the transportation infrastructure, including expressways and Shinkansen, and private industrial facilities, such as power plants, ironworks, and oil refineries, all linchpins of recovery. Following the Great East Japan Earthquake, we took part in several projects, including filling the foundations of Shinkansen power poles and rebuilding expressway slopes, while proposing optimal designs for specific sites.

Issues related to environmental contamination continue to grow more serious. Soil and groundwater pollution is an inevitable problem in redevelopment projects that involve plant relocations and land transactions.
Our capabilities make us a leading one-stop general contractor for soil remediation. We perform surveys, negotiate with government agencies, implement containment measures, including barrier construction, and mount cleanup efforts, including removing and decomposing all harmful substances.
Beyond this, civil engineering works often involve the clearing of wooded areas or the alternation of riverbeds, resulting in the loss of natural habitats. This is not only a problem of environmental degradation. It has serious implications for ecological diversity and the sustainability of the society that depends on this diversity. We are working to restore lost habitats by drawing on our technologies for slope greening and improving riparian habitats.

Essential to our daily lives, infrastructure represents industry’s backbone. Japan’s future depends on the soundness of its infrastructure. Drawing on proprietary technologies, we’re contributing to improvements in transport facilities, such as roads, railways, airports, and sea ports; waterworks, sewerage systems, rivers, and other facilities for daily life; energy generating facilities; and communications facilities.