The first and simplest method is to "Fix" and "Float" the suspended ceiling. This means mechanically fixing the two adjacent edges of the ceiling to the surrounding walls and freeing the two opposite ceiling edges to move horizontally. The fixed edge transfers the seismic loads of the ceiling to the perimeter walls, which are fixed back into the building structure as shown in Figure 1 (above). The movable edge allows differential movement between the ceiling and the walls/structure. The Seismic Oscillating Wall Clip is available with +/- 20 mm travel +/- 40 mm travel.