[Verified by Real Seismic Waves] Launch of "SZGV," a Semi-Structural Ceiling System Combining Vibration Isolation and Seismic Resistance
Sanyo Industries launched "SZGV" on May 29, a semi-structural ceiling system that balances vibration isolation and seismic resistance. Developed with Yakumo, it moves away from suspended ceiling designs. Verified by seismic testing at E-Defense, it ensures safety in large spaces like cinemas and concert halls.
📋 Article Processing Timeline
- 📰 Published: May 29, 2026 at 14:00
- 🔍 Collected: June 1, 2026 at 03:21 (61h 21m after Published)
- 🤖 AI Analyzed: June 1, 2026 at 07:49 (4h 27m after Collected)
Sanyo Industries, Ltd. (Headquarters: Sumida-ku, Tokyo; President: Shigeru Yamagishi; Securities Code: 5958; hereinafter "the Company") launched "SZGV" on May 29, a vibration-isolating and seismic-resistant ceiling system. This system adopts a semi-structural ceiling specification rather than the traditional suspended ceiling method, breaking away from the framework of conventional "specified ceilings" for architectural spaces requiring both vibration and seismic countermeasures.
Prior to the launch, the Company participated in full-scale vibration tests conducted at the National Research Institute for Earth Science and Disaster Resilience (NIED) "E-Defense" (Company news release dated April 10, 2026). Through vibration tests using real seismic waves from events such as the Great Hanshin-Awaji Earthquake and the Kumamoto Earthquake, the Company confirmed that there was no detachment or damage even during major earthquakes. This new ceiling system achieves both safety and comfort even in spaces where vibration isolation is required.
Leveraging various insights into seismic resistance for product development, the Company fully considers safety during the design stage and conducts rigorous verification. By connecting safety based on trust in products to people's peace of mind, the Company contributes to building a safe and secure society, protecting people's future.
■ "Ceiling Fall Risk" in Spaces Requiring Vibration Isolation
In cinemas (cineplexes), acoustic spaces, and railway-related facilities, vibration isolation measures to reduce noise and vibration are essential. Most of these are large spaces, and common vibration-isolating ceilings are typically of the suspended type, which carries a significant risk of ceiling collapse during earthquakes. These require the installation of braces to prevent swaying, regular inspections, and maintenance burdens. "Specified ceilings" (suspended ceilings over 6m high, over 200m², and over 2kg/m²) must meet strict standards.
To address the difficulty of balancing vibration isolation and seismic resistance, the Company, in joint development with Yakumo Co., Ltd., an engineering firm specializing in vibration isolation, has proposed a new solution: the "Semi-Structural Ceiling Type Vibration-Isolating and Seismic-Resistant Ceiling," which does not need to be classified as a "specified ceiling."
■ About the Product
This product is a ceiling system construction method that integrates a vibration-isolation mechanism to prevent sound propagation with a semi-structural ceiling (designed and constructed to ensure structural safety from the substrate to the ceiling surface itself). It is intended for use in spaces where both safety and comfort are required.
Since it is not a suspended ceiling, vibrations are not transmitted through braces used to prevent earthquake swaying. The system uses the newly developed original "SZGV Vibration-Isolation Bracket" (patent pending), which allows the upper main structure and the ceiling part to move as a single "structure," enabling both vibration isolation and seismic resistance.
To ensure performance quality, various tests have been conducted. For vibration isolation, it was confirmed that the natural frequency is 10Hz or less in insulation tests, with no significant difference between calculated and measured values. For seismic performance, unit tests confirmed a natural period of 0.1 seconds or less, and full-scale 3D vibration destruction tests confirmed no damage to ceiling materials or substrates even under 3-axis vibration from real seismic waves.
■ Main Features
Vibration Isolation x Seismic Resistance Ceiling System
By incorporating a vibration-isolation mechanism into a semi-structural ceiling, this system reduces vibration and ensures vibration-isolation performance (natural frequency of 10Hz or less) while moving integrally with the main structure during earthquakes, ensuring seismic performance (natural period of 0.1 seconds or less).
Original Component "SZGV Vibration-Isolation Bracket"
A bracket that insulates sound-induced vibrations with rubber during normal times and suppresses displacement during earthquakes.
■ Assumed Building Applications
"Vibration-Isolating and Seismic-Resistant Ceiling SZGV" is intended for use in applications where "comfort" and "safety" are simultaneously required:
- Cinema complexes (movie theaters)
- Music halls, multi-purpose halls
- Railway underpasses, station facilities, station complexes, etc.
- Private buildings where vibration is a concern, etc.
Based on a semi-structural ceiling, this system balances "comfort" and "safety" and contributes to reducing maintenance burdens.
Prior to the launch, the Company participated in full-scale vibration tests conducted at the National Research Institute for Earth Science and Disaster Resilience (NIED) "E-Defense" (Company news release dated April 10, 2026). Through vibration tests using real seismic waves from events such as the Great Hanshin-Awaji Earthquake and the Kumamoto Earthquake, the Company confirmed that there was no detachment or damage even during major earthquakes. This new ceiling system achieves both safety and comfort even in spaces where vibration isolation is required.
Leveraging various insights into seismic resistance for product development, the Company fully considers safety during the design stage and conducts rigorous verification. By connecting safety based on trust in products to people's peace of mind, the Company contributes to building a safe and secure society, protecting people's future.
■ "Ceiling Fall Risk" in Spaces Requiring Vibration Isolation
In cinemas (cineplexes), acoustic spaces, and railway-related facilities, vibration isolation measures to reduce noise and vibration are essential. Most of these are large spaces, and common vibration-isolating ceilings are typically of the suspended type, which carries a significant risk of ceiling collapse during earthquakes. These require the installation of braces to prevent swaying, regular inspections, and maintenance burdens. "Specified ceilings" (suspended ceilings over 6m high, over 200m², and over 2kg/m²) must meet strict standards.
To address the difficulty of balancing vibration isolation and seismic resistance, the Company, in joint development with Yakumo Co., Ltd., an engineering firm specializing in vibration isolation, has proposed a new solution: the "Semi-Structural Ceiling Type Vibration-Isolating and Seismic-Resistant Ceiling," which does not need to be classified as a "specified ceiling."
■ About the Product
This product is a ceiling system construction method that integrates a vibration-isolation mechanism to prevent sound propagation with a semi-structural ceiling (designed and constructed to ensure structural safety from the substrate to the ceiling surface itself). It is intended for use in spaces where both safety and comfort are required.
Since it is not a suspended ceiling, vibrations are not transmitted through braces used to prevent earthquake swaying. The system uses the newly developed original "SZGV Vibration-Isolation Bracket" (patent pending), which allows the upper main structure and the ceiling part to move as a single "structure," enabling both vibration isolation and seismic resistance.
To ensure performance quality, various tests have been conducted. For vibration isolation, it was confirmed that the natural frequency is 10Hz or less in insulation tests, with no significant difference between calculated and measured values. For seismic performance, unit tests confirmed a natural period of 0.1 seconds or less, and full-scale 3D vibration destruction tests confirmed no damage to ceiling materials or substrates even under 3-axis vibration from real seismic waves.
■ Main Features
Vibration Isolation x Seismic Resistance Ceiling System
By incorporating a vibration-isolation mechanism into a semi-structural ceiling, this system reduces vibration and ensures vibration-isolation performance (natural frequency of 10Hz or less) while moving integrally with the main structure during earthquakes, ensuring seismic performance (natural period of 0.1 seconds or less).
Original Component "SZGV Vibration-Isolation Bracket"
A bracket that insulates sound-induced vibrations with rubber during normal times and suppresses displacement during earthquakes.
■ Assumed Building Applications
"Vibration-Isolating and Seismic-Resistant Ceiling SZGV" is intended for use in applications where "comfort" and "safety" are simultaneously required:
- Cinema complexes (movie theaters)
- Music halls, multi-purpose halls
- Railway underpasses, station facilities, station complexes, etc.
- Private buildings where vibration is a concern, etc.
Based on a semi-structural ceiling, this system balances "comfort" and "safety" and contributes to reducing maintenance burdens.
FAQ
Is this compatible with Taiwan's seismic codes?
While the product meets rigorous Japanese seismic standards, implementation in Taiwan requires structural verification and compliance assessment according to local Building Technical Regulations.