High-durability wooden barn-style erosion control dam construction [From concrete to wood] Easy to install!
No curing period required! Easy material transport! Excellent workability, allowing for shortened construction time! Landscape considerations are also achieved!
The high-durability "Wooden Schoolhouse-style Erosion Control Dam" promotes the use of wood by transitioning from traditional concrete and steel dams to wooden dams, contributing to the global environment. By deeply impregnating wood with preservatives, we have achieved long-term durability comparable to that of concrete and steel dams. The estimated lifespan based on decay test results is over 50 years. Demonstration experiments and structural calculations have proven that the strength of the components and the resistance of the joints are sufficient, confirming that it functions as a unified structure without issues. Stability calculations for gravity structures examine stability against overturning, sliding, and ground support. The assembly construction does not require skilled labor, as it uses pre-cut components manufactured in a factory. It is featured in the "Essential Guide for Erosion Control Forest Roads (Estimation and Construction Edition)." **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. - **Economy:** Comparable to gravity concrete. - **Speed:** 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 refer to the PDF materials, or feel free to contact us.*
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basic information
We will handle tasks such as lumber layout from the design stage. *Please feel free to contact us.
Price information
- Prices may 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
【Uses】 ■ Valley stop work, floor solidification work ■ Permeable type watershed dam ■ Basic stability calculation based on total earth pressure (Type 5) 【Track Record】 ■ Over 600 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 cities and towns * 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 structure composed of wall materials (horizontal members) and brace materials (vertical members) assembled in a lattice pattern, filled with infill materials (gravel). The friction resistance of the semicircular processed areas on the brace materials allows it to function as an integrated structure while possessing flexible performance.
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"Wooden Storehouse-type Valley Stop Work" Miyazaki Prefecture, Higashi Usuki Agricultural and Forestry Promotion Bureau Fiscal Year 31 Restoration Mountain Conservation Project Kuisuhara Hinata City, Higashitogo Town, Yamakani, Kuisuhara
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"Wooden Warehouse-style Floor Stabilization Work" Hokkaido Forest Management Bureau, Abashiri Central Forest Management Office Nikuragawa Erosion Control Project Saroma Town, Tokoro District, Nikura
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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.