Seismic Rx®
ICC-ES recognizes Armstrong Seismic Rx Suspension System as a code compliant solution (ESR-1308). This evaluation and confirmation
by ICC-ES provides evidence supporting the Armstrong Seismic Rx Suspension System as a code-compliant alternative to IBC requirements.
Click here for more information on ESR-1308.
Purpose of Installation Requirements for Suspended Ceilings
• Suspension systems strong enough to resist lateral forces imposed upon it without failing
• Prevent border panels from falling from the ceiling plane
Federal Emergency Management Agency (FEMA)
Seismic performance during recent large California earthquakes prompted FEMA to address several concerns including suspended
ceiling performance during a seismic event. Research and tests demonstrated that current industry seismic standards (UBC Standard
25-2) were not adequate. FEMA determined that the key to good seismic performance was support of individual panels at walls
and expansion joints and interaction with sprinkler systems.
Source: FEMA 368 NEHRP Recommended Provisions for Seismic Regulations for New Buildings and Other Structures
New Seismic Categories
According to the International Building Code, a Seismic Design Category must be established for each construction project
based on:
- anticipated ground motion
- type of soil in a specific geographic area
- seismic use group designation
Seismic Joint Clip
The Seismic Joint Clip offers a faster, easier and better seismic solution for Seismic Category D, E and F installations.
Armstrong offers the only State University of New York, University of Buffalo-tested approach to creating seismic separation
joints in IBC Category D, E and F installations.
The Seismic Joint Clip works with Armstrong 15/16" and 9/16" grid systems including Prelude®, Suprafine®, and Silhouette®. For more information about the Seismic Joint Clip, click here to view the data page in English or click here to view the data page in Spanish.
Click here to view Seismic Joint Clip drawings.
NOTE: Seismic Joint Clip should not be used with Vector panels.
CES Course
Ask us about our new CES course on current seismic code requirements for commercial ceiling systems. Contact your Armstrong rep or call 877-ARMSTRONG for more information.
