Due to its open design, maintenance after construction is easier compared to underground types.
With the development of residential land and other projects, it is necessary to install retention basins to prevent the decrease in safety levels in downstream areas due to increased flood flow in rivers. The "Open-Type Retention Basin II" is a product that serves as a storage facility to mitigate road flooding and residential inundation caused by urbanization in river basins. It is easy to maintain after construction. Additionally, since the bottom slab is constructed on-site, it is possible to create pit areas and drainage slopes. 【Design Conditions】 ■ Superimposed Load: Q=10kN/m2 ■ Unit Weight of Soil: W=18kN/m3 ■ Internal Friction Angle of Soil: Φ=30° ■ Soil Pressure Calculation: Trial Wedge Method ■ External Water Level: Hw = Total Height / 2 *For more details, please download the PDF or feel free to contact us.
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【Water Stop Structure】 ■Sealing Method ■TSKJ Method *For more details, please download the PDF or feel free to contact us.
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Since our founding in 1925, we have contributed to the development of Japan's land through concrete products. From Sendai in the north to Hiroshima in the south, we respond to inquiries from various regions through a wide network. We have also established a system for delivering products from our own factory and manufacturing partners across the country. We offer over 1,800 types of products, the majority of which are original. We propose many products that contribute to "national resilience" as disaster prevention and mitigation measures against typhoons, floods, water damage, and landslides. With the motto "Proposal and technical capabilities that shape the future of Japan," we strive to meet our customers' expectations.