Earthquake-proofing method Product List and Ranking from 6 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Oct 15, 2025～Nov 11, 2025
This ranking is based on the number of page views on our site.

Earthquake-proofing method Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Oct 15, 2025～Nov 11, 2025
This ranking is based on the number of page views on our site.

  1. NS-R工法協会 Tokyo//Other construction industries
  2. 日本スナップロック協会 Tokyo//Other construction industries
  3. 二幸削進工業 Tokyo//Other construction industries
  4. 下水道既設管路耐震技術協会 Tokyo//Other construction industries
  5. 5 日本ステップ工業 Saitama//Building materials, supplies and fixtures manufacturers
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Earthquake-proofing method Product ranking

Last Updated： Aggregation Period:Oct 15, 2025～Nov 11, 2025
This ranking is based on the number of page views on our site.

  1. Seismic reinforcement method "Remake Ring" NS-R工法協会
  2. Seismic-resistant construction method "Magma Rock Method NGJ" 日本スナップロック協会
  3. Seismic retrofitting method for existing manholes 下水道既設管路耐震技術協会
  4. Seismic reinforcement method "Remake Ring" 二幸削進工業
  5. Seismic-resistant construction method "Magma Rock Method mini・NGJ" 日本スナップロック協会

Earthquake-proofing method Product List

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Seismic reinforcement method "Remake Ring"

Seismic reinforcement method "Remake Ring"

The applicable rehabilitation pipe is a self-supporting pipe! Seismic reinforcement method for the connection between the rehabilitation pipe and the manhole using non-excavation.

"Remake Ring" is a seismic retrofitting method that installs flexible joints at the connection points between the rehabilitation pipe (self-supporting pipe) and the manhole without excavation, designed to accommodate the extraction, protrusion, and bending of the rehabilitation pipe under Level 2 seismic motion. It is possible to install flexible joints in areas where pipe rehabilitation methods have already been completed, as well as to install flexible joints in conjunction with pipe rehabilitation methods. The applicable existing pipe types are reinforced concrete pipes and ceramic pipes, with applicable existing pipe diameters of nominal sizes 250 and 300. 【Features】 ■ Accommodates extraction, protrusion, and bending of rehabilitation pipes under Level 2 seismic motion ■ Obtained construction technology examination certification in March 2016, No. 1504 *For more details, please refer to the PDF materials or feel free to contact us.

  • Earthquake-resistant construction method

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Seismic-resistant construction method "Magma Rock Method NGJ"

Seismic-resistant construction method "Magma Rock Method NGJ"

Technology based on a reversal of thinking! Creating a new seismic structure at the connection between the main pipe and the manhole.

The "Magma Rock Method NGJ" maximizes the features of the Magma Rock Method and incorporates innovative technology to enhance the seismic resistance of the main pipe and manhole connection. Developed for the seismic reinforcement of pipe joints, the Magma Rock Method demonstrates waterproof performance that can withstand extraction due to Level 2 seismic motion. With the realization of this method, the connection between the main pipe and manhole can be improved to a seismic structure in a short time without excavation from the surface while maintaining water flow. 【Features】 - For medium and large diameter pipes, all materials can be brought in through a φ600 manhole opening, and all work can be performed inside the pipe. - The installation work for the guided joint involves cutting while leaving part of the pipe thickness, preventing the inflow of groundwater or soil during construction. - Even when the inside of the pipe is flowing, reliable construction can be completed in a short time. - The pipe diameter can be improved to a seismic structure that withstands Level 2 seismic motion, ranging from φ800 to φ3000. - The Level 2 seismic performance of Magma Rock has been verified through various waterproof tests. *For more details, please refer to the PDF document or feel free to contact us.

  • Renovation and repair methods
  • Earthquake-resistant construction method

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Non-excavation seismic reinforcement of sewage systems, compatible with Level 2 seismic motion: "Magma Rock Method."

Non-excavation seismic reinforcement of sewage systems, compatible with Level 2 seismic motion: "Magma Rock Method."

A seismic reinforcement technology that improves the joint section of the main sewer pipe to a seismic structure in a short time without excavation. Compatible with diameters from Ø800 to Ø3500. Construction is possible even in a flowing state.

The "Magma Rock Method" is a seismic retrofitting technique that improves existing sewer facilities without seismic structures to a seismic-resistant structure in a short time and without excavation. 【Target Pipe Diameter】 ■ Magma Rock Method: φ800mm to φ3500mm 【Features】 ■ Magma Rock Method - Joint of the pipe - Flexibly follows horizontal and bending displacements caused by earthquakes, maintaining water tightness. Depending on the intended use and target pipe diameter, it is classified into types such as "Magma Rock Method NGJ," "Magma Rock Method mini NGJ," and "Magma Rock Method for Manholes." *For more details, please refer to the related link page or feel free to contact us.

  • Earthquake-resistant construction method
  • Vibration isolation, vibration control, and earthquake resistance construction
  • Sewerage facilities

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Seismic retrofitting method for existing manholes

Seismic retrofitting method for existing manholes

A method for seismic retrofitting the connection between existing manholes and pipes using non-excavation techniques.

This construction method involves cutting the walls of the manhole along the outer circumference of the pipe using a specialized cutting machine, thereby separating the edges of the manhole and the pipe. The cut grooves are filled with backup materials to prevent the inflow of soil and sealing materials to prevent the inflow of groundwater, enhancing the seismic resistance of the connection. Additionally, by installing absorption rubber blocks in the invert section, it prevents the pipe from protruding into the manhole during an earthquake, thereby avoiding damage to the pipe opening. 【Features】 - Manhole covers can be constructed with an internal diameter of 600mm or more. - Construction is possible for pipe internal diameters up to 700mm. - Seismic performance can accommodate a maximum bending angle of 5.0 degrees and displacements of up to 100mm due to level 2 seismic motion, ensuring the functionality of wastewater flow. - Minimal impact on surrounding ground, underground installations, local residents' lives, and traffic. *For more details, please download the PDF or feel free to contact us.

  • Earthquake-resistant construction method

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Seismic reinforcement method "Seismic One-Shot (Medium Diameter)"

Seismic reinforcement method "Seismic One-Shot (Medium Diameter)"

Ensuring seismic performance by rehabilitating aging pipes! There is no risk of damaging nearby buried objects.

The "Seismic One-Shot-kun (Medium Diameter)" is a non-excavation seismic reinforcement method developed to add seismic performance against level 2 seismic motions by modifying the manhole connection part to a flexible structure before rehabilitation. The construction involves using a specialized cutting machine to cut and remove the existing pipes within the thickness of the manhole wall without penetrating into the surrounding ground. A stainless steel collar is then bonded and fixed in place, and two layers of seismic rubber rings with elasticity and water-tightness are installed. Elastic wet epoxy resin is filled into the gap between the manhole wall and the seismic rubber rings to secure them. After applying this method to the upstream and downstream manhole connection parts, the construction of the rehabilitation pipe allows for the seismic reinforcement of both the rehabilitation pipe and the manhole connection part. 【Features】 ■ Applicable pipe diameters are from an inner diameter of 450mm to less than 800mm, with a manhole depth of up to 10m. ■ Addresses bending, extraction, and protrusion of pipes due to level 2 seismic motions. ■ Does not affect the performance (nominal diameter, strength, elasticity, etc.) of the rehabilitation pipe. ■ The specialized cutting machine can only cut and remove the existing pipes within the thickness of the manhole wall. ■ Since it does not penetrate into the surrounding ground, there is no risk of damaging nearby buried objects. *For more details, please refer to the PDF document or feel free to contact us.

  • Earthquake-resistant construction method

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Seismic-resistant construction method "Magma Rock Method mini・NGJ"

Seismic-resistant construction method "Magma Rock Method mini・NGJ"

Finally realized! The joint (pipe opening) between small-diameter manholes and pipes will be improved to a seismic-resistant structure.

The "Magma Rock Method mini・NGJ" is a non-excavation seismic reinforcement method developed to enhance the seismic resistance of the "pipe connection points where existing pipelines and manholes connect," which do not have seismic resistance, targeting pipe diameters of 700mm or less. Based on the seismic technology cultivated in the "Magma Rock Method NGJ," which targets diameters of 800mm and above, this method improves the pipe connections of existing pipelines and manholes that lack seismic resistance to a seismic structure that can withstand Level 2 seismic motion. 【Features】 - All work, including the installation of guiding joints, can be performed inside the manhole, eliminating the need for work on the ground. - Reliable construction can be achieved in a short time, even when the pipe is in a flowing state. - The guiding joints are cut into the pipe while leaving part of the pipe's thickness, preventing the intrusion of groundwater or soil during construction. - Small diameter pipe connections (φ200 to φ700) are improved to a seismic structure that can withstand Level 2 (seismic motion). *For more details, please refer to the PDF document or feel free to contact us.

  • Renovation and repair methods
  • Earthquake-resistant construction method

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Seismic reinforcement method "Remake Ring"

Seismic reinforcement method "Remake Ring"

Applicable to reinforced concrete pipes! Seismic retrofitting method for rehabilitation pipes and manhole connections using non-excavation.

"Remake Ring" is a seismic retrofitting method that installs flexible joints at the connection between the rehabilitation pipe (self-supporting pipe) and the manhole without excavation, designed to accommodate the extraction, protrusion, and bending of the rehabilitation pipe under Level 2 seismic motion. It is possible to install flexible joints in areas where pipe rehabilitation methods have been completed, as well as in conjunction with the pipe rehabilitation method. This method can be applied to existing reinforced concrete pipes and ceramic pipes. 【Features】 ■ Seismic retrofitting method for the connection between rehabilitation pipes and manholes without excavation ■ Accommodates extraction, protrusion, and bending of rehabilitation pipes under Level 2 seismic motion ■ Construction technology review certification obtained No. 1712 *For more details, please refer to the PDF document or feel free to contact us.

  • Earthquake-resistant construction method

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Seismic reinforcement method "NS Cutting Method"

Seismic reinforcement method "NS Cutting Method"

It is a cutting technology for installing seismic-resistant joints.

Our company provides a seismic-resistant flexible joint (secondary product) that can be installed at the connection points between existing pipes, rehabilitated pipes (composite pipes), and manholes without excavation. This method, called 'NS Cutting Method,' is designed to accommodate the extraction, protrusion, and bending of existing and rehabilitated pipes (composite pipes) under the assumption of Level 2 seismic motion. It can be executed regardless of the construction procedures before and after pipe rehabilitation. Additionally, the operation can be performed remotely via a control panel installed on the ground, ensuring safety and smooth execution. 【Construction Steps】 1. Preliminary Confirmation (Investigation Work) 2. Invert Breaking 3. Cutter Blade Replacement 4. Cutting Work 5. Installation of Seismic-Resistant Flexible Joint 6. Finishing Work *For more details, please download the PDF or contact us.

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Seismic reinforcement method "Remake Ring"

Seismic reinforcement method "Remake Ring"

Seismic reinforcement method for rehabilitation pipes and manhole connections using non-excavation techniques!

Our company provides a seismic retrofitting method called "Remake Ring," which involves installing flexible seismic joints at the connection points between the non-excavated rehabilitated pipes (independent pipes) and manholes. This method is designed to accommodate the extraction, protrusion, and bending of rehabilitated pipes under Level 2 seismic motion. This method can be applied in two scenarios: one where flexible seismic joints are installed at locations where pipe rehabilitation has already been completed, and another where flexible seismic joints are installed alongside the pipe rehabilitation work. Please feel free to contact us if you have any inquiries. 【Application Scope】 ■ Applicable existing pipe types: Reinforced concrete pipes, ceramic pipes ■ Applicable rehabilitated pipes: Independent pipes ■ Applicable existing pipe diameters: 200 to 700 mm, etc. *For more details, please download the PDF or contact us.

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Seismic retrofitting of large-diameter drainage pipe outlet using the "Magma Rock Method NGJ"

Seismic retrofitting of large-diameter drainage pipe outlet using the "Magma Rock Method NGJ"

Non-excavation sewer pipelines (large diameter, φ800 to φ3000) seismic resistance technology. Cylindrical stainless steel and rubber sleeves designed to withstand Level 2 seismic motion.

The Magma Lock method, developed for the seismic reinforcement of pipe joint sections, demonstrates water-tight performance capable of withstanding disconnection due to level 2 seismic motion. This method involves pre-cutting grooves (joints) at the connection between the main pipe and the manhole, installing the Magma Lock, and concentrating seismic stress at this point to induce cracking in the joint. The shock absorption effect helps prevent damage to the connection. In areas where cracks occur along the joint, the pre-installed Magma Lock prevents the inflow of groundwater and soil into the pipe. Additionally, this seismic reinforcement method can be reliably installed even when the existing pipe is in a flowing state, as long as the water depth is 25% or less of the pipe diameter (maximum water level of 40 cm), targeting the connection between the manhole and the pipe. 【Applications】 ● Seismic reinforcement of the connection between manholes and pipes (circular pipes).

  • Sewerage facilities

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