Long-lasting corrosion-resistant manholes! A sewer composite manhole rehabilitation method that achieves material savings.
The "Evashito Method" is a composite manhole rehabilitation technique that involves attaching an "FRP sheet" to the inner wall of an existing manhole that has advanced corrosion, using an expansion frame, and filling the gap between the sheet and the existing manhole with mortar. The backside treatment of the FRP sheet creates a rough surface with the adhered silica sand, enhancing the adhesion strength with the filling material and achieving a complete integration with the existing manhole, resulting in strong durability. No heavy machinery is required, and no special skills are needed, allowing for construction in a small road occupancy area. By utilizing the existing manhole, material savings are achieved, along with a reduction in construction time, resulting in excellent cost-effectiveness. 【Features】 ■ High quality ■ High speed ■ Low cost ■ Can be constructed in a small road occupancy area ■ Achieves material savings by utilizing existing manholes *For more details, please refer to the PDF document or feel free to contact us.
Inquire About This Product
basic information
【Construction Procedure】 ■ High-pressure washing of interior wall surfaces ■ Cutting of existing steps ■ Insertion of EVA sheet for vertical walls ■ Installation of bottom sheet and expansion frame (1st stage) ■ Filling with grout material ■ Installation of EVA sheet for vertical walls (2nd stage) ■ Filling with grout for the 2nd stage ■ Installation of EVA sheet for sloped walls ■ Installation of pipe socket ■ Installation of steps completes the rehabilitated manhole interior wall *For more details, please refer to the PDF document or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
【Usage】 ■Manhole *For more details, please refer to the PDF document or feel free to contact us.
catalog（1）
Download All Catalogs
Company information
Since its founding in 1955, Ebata has quickly responded to the social demands accompanying the advancement of urbanization in Japan. As a pioneer in sewage treatment with products like the inverted sewage manhole "Invert" and the assembled manhole "Evahole," as well as more recently the permeable manhole "Shinto Hole" and the rainwater storage infiltration tank made of recycled plastic "System Panel, Panecave," we have contributed to the improvement of urban amenities. Keeping in mind our management philosophy of "Creating customer joy together," we are committed to continuing our efforts as a company trusted by society.