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  6. Damper Quantity Reference Table

Damper Quantity Reference Table

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last updated:Nov 26, 2025

トキワシステム
トキワシステム
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A reference table that clearly shows the required number of units in relation to the total floor area!

This document provides a clear table of the recommended number of "α Dampers ExII" needed based on the total floor area. For 1-2 story buildings, they should be installed at the top of the first-floor columns, and for 3-story buildings, they should be installed at the tops of the first and second-floor columns. Additionally, the numbers provided are guidelines for a uniformly shaped plan in both plan and elevation views. For the actual required number, please contact us. 【Recommended Numbers *Partial】 ≪1-2 Story≫ ■ Approximately 14 tsubo: 8 units ■ Approximately 20 tsubo: 12 units ■ Approximately 26 tsubo: 16 units ≪3 Story≫ ■ Approximately 27 tsubo: 24 units ■ Approximately 31 tsubo: 28 units ■ Approximately 35 tsubo: 32 units *For more details, please refer to the PDF document or feel free to contact us.

    Wooden frame unitEarthquake-proof and vibration-damping equipmentVibration isolation, vibration control, and earthquake resistance construction
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Damper Quantity Reference Table

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  • Related Link - http://www.tokiwa-system.com/
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basic information

【Estimation Procedure】 ≪Preliminary (Reference) Layout and Estimate≫ ■Elevation Drawing ■Floor Plan ■Short Calculation Drawing or Section Drawing ≪Final Layout and Estimate≫ ■Foundation Layout ■Complete Final Pre-cut Layout (Conventional) ■Complete Frame Drawing (2×4) and others *For more details, please refer to the PDF materials or feel free to contact us.

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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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