Research and tests demonstrated that industry seismic standards ubc standard 25 2 were not adequate.
Seismic ceiling grid.
The above information is correct to the best of our knowledge at the date of issuance.
All usg donn brand ceiling suspension systems meet these requirements.
Because codes continue to evolve check with a local official prior to designing and installing a ceiling system.
In each case the seismic braces should be designed to enable the suspended ceiling to carry the seismic demand load.
Determination of the seismic design category is complex and must be determined by a registered architect or professional engineer and should be found in the construction docu mentation.
However in the absence of a specific ac for this purpose ic es allowed ac156 to act as the basis for all seismic testing and evaluation for the acoustical ceiling suspended ceilings industry.
Astm e580 section 5 2 8 2 seismic splay wires shall be attached to the grid and to the structure in such a manner that they can support a minimum.
Seismic design category the requirements for a suspended ceiling are determined by the buildings seismic design category.
Seismic splay wires are to be four 12 gage wires attached to the main beam.
Seismic construction standards have been established to control panic during an earthquake and provide life safety to building occupants during and.
Armstrong ceiling and wall solutions is the industry leader in seismically tested ceiling wall and suspension systems so you can design and install with confidence.
In the event of an earthquake our seismic rated ceiling systems help support life safety and the preservation of property.
Prevent loss of amenity caused by behavior of grid ceiling systems during seismic activity.
Prevent injury caused by failure of grid ceiling systems during seismic activity.
Seismic splay wires are to be four 12 gauge wires attached to the main beam.
This is only intended as a quick reference.
Rigid braces should be installed in pairs orthogonal to each other and in combination with a vertical hanger or strut.
Astm e580 section 5 2 8 2 seismic splay wires shall be attached to the grid and to the structure in such a manner that they can support a design load of.
Armstrong seismic rx icc es recognizes armstrong seismic rx suspension systems as seismic code compliant solutions to meet esr 1308.
Combining our grid with our seismic tested perimeter and separation joint solutions creates a complete solution that not only performs but also reduces installation time speeds up inspection saves on material and labor costs and improves the aesthetics of the finished.
They should be at a maximum angle of 45 from the plane of the ceiling grid.
Create efficiencies in the construction of grid ceiling systems.
Provide a systematic and quantifiable approach to grid ceiling bracing.
To support individual panels around the perimeter fema determined that the key to good seismic.
