Patent ID: 8813450

Claim:
A fire and water resistant expansion and seismic joint system, comprising: a cover plate; a core comprising a first core portion and a second core portion; a spline attached to the cover plate along a first edge of the spline; the first core portion having a fire retardant material infused therein located on a first face of the spline; the second core portion having a fire retardant material infused therein located on a second face of the spline; wherein the spline depends from the cover plate in a one piece construction and extends into the core to a depth within the core and is positioned in a gap between substantially coplanar substrates such that the cover plate overlies the gap; and wherein the first core portion is compressed between the first face of the spline and one of the coplanar substrates and the second core portion is compressed between the second face of the spline and the other of the coplanar substrates, and the fire and water resistant expansion and seismic joint system is capable of withstanding exposure to a temperature of about 540° C. or greater for about five minutes.