High-durability wooden barn-style revetment work [From concrete to wood] Significant natural environmental benefits!
Matches river landscapes! Creates habitats for living organisms! Excellent workability allows for shortened construction periods!
The high-durability "wooden school barn-style revetment" promotes the use of wood by transitioning from traditional concrete and steel revetments to wooden ones, contributing to the global environment. By deeply impregnating wood with preservatives, we have achieved long-term durability comparable to that of concrete and steel revetments. The estimated lifespan based on decay test results is over 50 years. Through demonstration experiments and structural calculations, we have proven that the strength of the components and the resistance of the joints are sufficient, confirming that it functions as a cohesive structure without issues. In the stability calculations for gravity structures, we examine stability against overturning, sliding, and ground support. The assembly construction does not require skilled labor due to precut components made in the factory. It is suitable for construction sites where material delivery is difficult. The basic structure is similar to that of wooden school barn-style earth retaining structures. 【Features】 ■ Stability: A structure based on stability calculations and structural calculations as a gravity structure. ■ Durability: Meets the "quality, performance, and durability" required for civil engineering structures. ■ Economic efficiency: Comparable to gravity concrete. ■ Rapid construction: Excellent workability allows for shortened construction periods. ■ Environmental consideration: Promotes the use of wood and takes landscape into account. *For more details, please visit our website or PDF materials, or feel free to contact us.
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basic information
We will handle the layout of the wood and other aspects from the design stage. *Please feel free to contact us.
Price information
- Prices vary depending on quantity and usage area. - There are areas where local timber can be used (primarily domestic timber). - The estimate will be for the entire structure.
Delivery Time
※The delivery date may vary depending on the conditions, so please feel free to contact us.
Applications/Examples of results
【Purpose】 ■ Coastal protection works, channel works 【Track Record】 ■ Over 350 installations nationwide ■ Main clients: Ministry of Agriculture, Forestry and Fisheries (Forestry Agency), Ministry of Land, Infrastructure, Transport and Tourism, Ministry of the Environment, various prefectures (Agriculture, Forestry and Civil Engineering), various municipalities * For more details, please refer to the construction examples on our website or feel free to contact us.
Detailed information
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It is a gravity-type structure composed of wall materials (horizontal members) and support materials (vertical members) arranged in a lattice pattern, filled with infill materials (chestnut stones). The friction resistance provided by the semi-circular processing on the support materials allows it to function as an integrated structure while possessing flexible performance. ◎ A suction prevention sheet is installed, and chestnut stones are used as the infill material. ◎ A design flow rate of up to 8 m/s is possible. (From the Ministry of Land, Infrastructure, Transport and Tourism's "Basic Policy for Disaster Recovery to Protect Beautiful Mountains and Rivers")
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"Wooden Warehouse-style Revetted Bank Works" Shizuoka Prefecture, Hamamatsu Civil Engineering Office Fiscal Year 2013 Class II River Maintenance and Repair Works for Lake Sanaru (Shinkawa) Near Irino-cho, Nishi Ward, Hamamatsu City
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"Wooden Warehouse-style Revetted Bank Construction" Ministry of Land, Infrastructure, Transport and Tourism Nasa River Embankment Construction Project for Fiscal Year 2007 Toyooka City, Hyogo Prefecture
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"Wooden Storehouse-style Side Wall" Miyazaki Prefecture, Northern Morokata Agricultural and Forestry Promotion Bureau Fiscal Year 2020 Forest Land Degradation Prevention Project, Kamiyama Yamada Town, Miyakonojo City, Yamada
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Company information
Koshii Preserving Co., Ltd. is engaged in the manufacturing, sales, research and development, and application development of wood preservation chemicals. By combining pressure-treated wood with services, technology, and design, we create a market that has never existed before through product development that considers the final intended use.