We will create a stable cover vegetation foundation that suppresses the sliding and flow of covered soil and sediment.
Tōō Kingiken Co., Ltd. developed and proposed the small connecting block "Fessel S" in 1982, which features connection and interlocking functions within the block itself. In 1986, for the large-scale disaster recovery work on the Yoshidagawa River, we developed the large connecting block "Fessel L," which received praise for its labor-saving properties, workability, and shortened construction period. In 1997, ahead of the promotion of "natural river development" due to the revision of the River Law, we developed and proposed "Fessel G," which incorporates soil covering functions and a surface porous structure, taking ecosystem conservation into consideration. Since 1994, it has been adopted in natural riverbank construction methods in rivers in the Tohoku region. Subsequently, through business partnerships with several companies, we have achieved a construction record of 330,000 square meters, including in the Chubu and Shikoku regions, and have received recognition for our work. For more details, please contact us or refer to our catalog.
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basic information
【Features】 ○ Vertical and horizontal protrusion structure on the block surface → Prevents the sliding and flow of covered soil, creating a stable vegetative foundation ○ "Polar type" that forms continuous gaps between the protrusions and the block surface → Supports the habitat of microorganisms and small animals, indirectly maintaining water purification functions ○ "Rough surface type" of ordinary VICON ○ Both "Polar type" and "Rough surface type" are manufactured using the VICON method → High early strength and excellent freeze-thaw resistance → Can be used in harsh natural conditions with repeated freeze-thaw cycles on riverbanks ○ Plant roots extend and bind the blocks together, forming a stable vegetative slope (Block surface of "Polar type") ○ Blocks are enlarged to 0.8 units/m² → Reduces construction labor and costs through efficiency improvements → Enables high-quality revetment design and planning through verification of mechanical stability ● For more details, please contact us or refer to the catalog.
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Company information
Tohō Giken Co., Ltd. was established in July 1979 with the corporate philosophy of "Advanced Technology and Creativity," operating as a knowledge-intensive company. The main focus of the company's business is the development and dissemination of new methods and products for riverbank protection. We have developed numerous unique riverbank protection methods and products that are rare in the industry, accumulating a track record of construction and receiving recognition as innovative methods and products. In particular, in recent years, we have been promoting the "Multi-Natural River Creation" method, striving to develop new methods and materials that reduce labor and resources while also considering and improving environmental impacts, based on traditional river construction methods in our country. We are also promoting our business through active applications for industrial property rights and registration with NETIS, aiming for business expansion through licensing agreements with companies in various regions and partnerships with different industries. Recently, we have been developing and selling products aimed at individuals that consider the global environment, in addition to civil engineering construction materials.