Seismic Ceiling Grid

Research and tests demonstrated that industry seismic standards ubc standard 25 2 were not adequate.

Seismic ceiling grid.

Prevent loss of amenity caused by behavior of grid ceiling systems during seismic activity. The above information is correct to the best of our knowledge at the date of issuance. Create efficiencies in the construction of grid ceiling systems. This is only intended as a quick reference.

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. All usg donn brand ceiling suspension systems meet these requirements. They should be at a maximum angle of 45 from the plane of the ceiling grid. Provide a systematic and quantifiable approach to grid ceiling bracing.

Seismic performance during large california earthquakes prompted fema to address suspended ceiling performance during a seismic event. To support individual panels around the perimeter fema determined that the key to good seismic. Seismic construction standards have been established to control panic during an earthquake and provide life safety to building occupants during and. 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 splay wires are to be four 12 gage wires attached to the main beam. Seismic splay wires are to be four 12 gauge wires attached to the main beam. 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. 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.

In each case the seismic braces should be designed to enable the suspended ceiling to carry the seismic demand load. Wires are arrayed 90 from each other and at an angle not exceeding 45 from the plane of the ceiling. Wires are arrayed 90 from each other and at an angle not exceeding 45 from the plane of the ceiling. In the event of an earthquake our seismic rated ceiling systems help support life safety and the preservation of property.

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. Prevent injury caused by failure of grid ceiling systems during seismic activity. Seismic design category the requirements for a suspended ceiling are determined by the buildings seismic design category. Because codes continue to evolve check with a local official prior to designing and installing a ceiling system.