Patent ID: 9637914
Date: 2017-05-02
CPC Classifications: E04B,E04C

Claim:
1. A fire rated metal stud framing wall and ceiling system, comprising: a metal bottom track comprising a web, a first flange and a second flange, the first and second flanges extending in an upward direction from opposing side edges of the web, the bottom track defining an interior space between the web and the inwardly-facing surfaces of the first and second flanges; a plurality of metal studs that are spaced from one another along the bottom track, each of the plurality of studs having a bottom end received within the interior space of the bottom track, each of the plurality of studs extending in a generally vertical direction from the bottom track; a metal top track comprising a web, a first flange and a second flange, the first and second flanges extending in a downward direction from opposing side edges of the web, the top track defining an interior space between the web and the inwardly-facing surfaces of the first and second flanges, wherein upper ends of each of the plurality of studs are received within the interior space of the top track, further comprising at least one heat-expandable, intumescent material strip extending along a length of the top track, the intumescent material strip attached to the top track and having at least a first surface facing the top track and a second surface; and a ceiling; wherein the top track is secured to the ceiling and the at least one intumescent material strip is located on the top track such that the second surface of the at least one intumescent material strip contacts the ceiling and wherein the second surface of the at least one intumescent material strip defines a width that is less than the width of the web of the metal top track.