Allowable pull-out of up to 5mm in the consideration of Level 2 during an earthquake! It can also be used for diagonal connections.
"Tough J" is a construction method that is strong against live loads and soft ground at all times, preventing pipe bending and, during earthquakes, absorbing the load on pipe joints caused by ground displacement, ensuring the safety of pipe functions. With tension washers, it has the function of preventing longitudinal bending of pipes under normal conditions and following longitudinal bending deformation during earthquakes. Additionally, it absorbs displacement by collapsing under a certain load, preventing excessive stress on bolts and maintaining the integrity of the joint function. 【Features】 ■ Adopted in the sewer pipe rehabilitation method "RPC method," which has obtained technical review certification from the Japan Sewerage New Technology Organization (public interest incorporated foundation). ■ As a seismic connection joint, it allows for a maximum pull-out of 5mm in the consideration of earthquake level 2. ■ Prevents pipe disconnection and maintains the meandering slope of the pipeline, fulfilling the function of maintaining the flow path. *For more details, please refer to the PDF materials or feel free to contact us.
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basic information
【Normal and Earthquake Conditions】 ■Normal: Live Load and Dead Load - The tension acting on the joint surface due to bolt connections with Tough-Jay prevents deflection and buckling caused by live loads or soft ground. ■During Earthquake: Ground Deformation - In response to ground displacement, each bolt connection using Tough-Jay expands and absorbs the displacements occurring throughout the pipeline. - Even when subjected to seismic motions that require performance, the bolts remain in a sound condition, preventing significant joint openings or steps, thus ensuring the functionality of the pipeline. *For more details, please refer to the PDF materials or feel free to contact us.
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【Usage】 ■ Applicable for vertical connections (bolt connections) of conduits such as box culverts ■ Can also be used for angled cut connections *For more details, please refer to the PDF document 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.