The seismic clip also increased the deformability of the joint while it still carried reasonable amount of axial load. The results showed an improvement in the load bearing capacity of the joints under monotonic tension and compression loading. The tensile and compressive capacities of the grid joint with and without seismic clips in each failure mode were quantified and comparisons were made between the as-built and strengthened connections. Different failure mechanisms were identified in the monotonic experiments. Following these findings, the study reported herein aims at experimentally investigating the possibility of strengthening the connection between cross tees and main tees in suspended ceilings through the addition of a seismic clip. Experimental tests of different suspended ceiling components have identified the grid connections and rivet fixtures as the weakest components. Hence, the ceiling system is only as strong as the weakest of the load path components. the main tees) to the buildings through the perimeter supports. cross tees) to the longitudinal grid members (i.e. In typical suspended ceilings, the seismic inertial force flows from the tiles to the transverse grid members (i.e. Suspended ceiling failure is frequently reported as a cause of financial loss following earthquakes.
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