Always non-weighted construction method! Since no special construction is performed, it can be completed easily and in a short time. [Looking for sales partners]
The "Hattling Method" involves installing buoyancy suppression blocks at a standard depth of 1.0m, utilizing the weight of the blocks and the weight of the backfill soil (crushed stone) on top of the blocks to suppress the uplift of manholes only when liquefaction occurs. This method can be applied not only to existing manholes in urban areas, which are significantly affected by uplift, but also to newly installed manholes. It can be constructed easily and at a low cost without affecting the manhole itself. 【Features】 ■ Can be installed on both existing and new manholes ■ Does not affect the manhole ■ No increase in inertial forces due to seismic motion ■ Can be constructed easily and in a short time *For more details, please refer to the PDF materials or feel free to contact us. 【Looking for Sales Partners】 We will sell your products! Can we support you in expanding your sales channels?
Inquire About This Product
basic information
【Construction Procedure (For Standard Block Installation of Assembly Type Manhole No. 1)】 1. Excavation: Excavate around the manhole to a depth of 1.0m. 2. Installation of Fixed Bands: Secure the three-part fixed bands to the outer circumference of the manhole using a torque wrench. 3. Installation of Buoyancy Control Block: Lower it using a crane. 4. Installation of Erosion Control Material: Ensure it is in close contact with the outer circumference of the manhole and the buoyancy control block. 5. Installation of Erosion Prevention Net: Cover and secure a net around all sides of the excavation area. 6. Backfilling with Crushed Stone: Backfill with crushed stone and compact it. 7. Restoration of Subgrade. 8. Restoration of Pavement (Completion of Work). *For more details, please refer to the PDF document or feel free to contact us.
Price range
Delivery Time
Applications/Examples of results
For more details, please refer to the PDF document or feel free to contact us.
catalog（2）
Download All Catalogs
![[Report] Investigation of Sewage Manholes in the Great East Japan Earthquake](https://image.www.ipros.com/public/catalog/image/01/c7a/587155/IPROS28332554326114904578.jpeg?w=120&h=170)
Company information
Our company was established in July 1961 as the general agent for Yokohama Rubber Co., Ltd. in Okayama Prefecture, following the attraction of businesses to the Mizushima area. For over 50 years since our founding, we have received support from many customers, primarily in the sales of industrial rubber products. Today, we have established a sales base targeting not only companies in the Mizushima complex but also throughout the entire prefecture, and we are expanding our sales channels to the Chugoku and Shikoku regions. We have also expanded our product offerings to include construction materials and civil engineering materials used in infrastructure development such as roads, ports, water supply and sewage systems, and building and residential construction, as well as materials for air conditioning equipment, parks, and sports facilities.
