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  6. What is seismic resistance? A simple explanation of standards, grades, and reinforcement for seismic measures.

What is seismic resistance? A simple explanation of standards, grades, and reinforcement for seismic measures.

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last updated:Dec 23, 2025

トキワシステム
トキワシステム
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We will also introduce the reasons why combining seismic resistance with vibration control is recommended!

In Japan, where earthquakes are frequent, the concept of "earthquake resistance" that allows homes to withstand earthquakes is essential for protecting the lives of families. However, there are actually various measures related to earthquake resistance, such as "earthquake resistance standards, earthquake resistance grades, and earthquake reinforcement." In this article, we will summarize the concepts related to earthquake resistance and also introduce other earthquake measures such as seismic control and base isolation. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*

    Earthquake-proof and vibration-damping equipment
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What is seismic resistance? A simple explanation of standards, grades, and reinforcement for seismic measures.

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  • What is a seismic control device "seismic damper"?
  • Special site - Product/service details - https://pr.www.ipros.com/tokiwa-system/product/

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Proposal for Application-Specific Plans for the Vibration Control Device "α Damper Ex II"

Proposal for Application-Specific Plans for the Vibration Control Device "α Damper Ex II"

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Seismic control device for wooden houses αDamperExII (αDamperExII)

Seismic control device for wooden houses αDamperExII (αDamperExII)

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Hydraulic Vibration Control Device for Wooden Houses 'α Damper ExII' *Pamphlet included

Hydraulic Vibration Control Device for Wooden Houses 'α Damper ExII' *Pamphlet included

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Seismic control device for wooden houses αDamperExII

Seismic control device for wooden houses αDamperExII

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[Construction Example] α Damper EXII New Construction Project

[Construction Example] α Damper EXII New Construction Project

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[Construction Case] α Damper EXII Renovation Work

[Construction Case] α Damper EXII Renovation Work

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Earthquake safety measures for peace of mind

Earthquake safety measures for peace of mind

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Seismic resistance level maintained by seismic dampers - Building homes that can be lived in even after a major earthquake.

Seismic resistance level maintained by seismic dampers - Building homes that can be lived in even after a major earthquake.

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Started providing evaluation reports that clearly show the effects of the α Damper Ex II installation at a glance.

Started providing evaluation reports that clearly show the effects of the α Damper Ex II installation at a glance.

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The superiority of the α Damper ExII in suppressing the reduction of building strength due to major earthquakes.

The superiority of the α Damper ExII in suppressing the reduction of building strength due to major earthquakes.

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National Seismic Hazard Map 2018 Edition

National Seismic Hazard Map 2018 Edition

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トキワシステム

トキワシステム

Building materials, supplies and fixtures manufacturers

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Tokiwa System Co., Ltd. is a company that develops, manufactures, and sells the seismic control device αDamperExII. It is a pioneer in seismic control devices using hydraulic dampers. The αDamperExII has received the number one track record and trust in the Tokai and Tonankai earthquake warning areas, and it will soon be adopted in 10,000 buildings. The αDamperExII is a hydraulic seismic control device that reduces building deformation caused by earthquake shaking by approximately half.

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