Patent ID: 11896859
Assignee: CEMCO, LLC
Field: Civil engineering (Other fields)
Classification: CPC A  E | IPC A  E

Claim 19:
20. A fire-rated wall assembly comprising:
an overhead structure;
a plurality of vertical wall studs;
a track for receiving the plurality of vertical wall studs, the track connected to the overhead structure, the track comprising a web, a first flange and a second flange, the first and second flanges extending in the same direction from opposite edges of the web to form a U-shape;
a wallboard supported by the plurality of vertical wall studs, wherein the plurality of vertical wall studs are movable relative to the track, wherein the wallboard is spaced apart from the overhead structure to define a deflection gap between an upper edge of the wallboard and the overhead structure; and
a fire block strip extending along the deflection gap and configured to block the passage of fire and smoke through the deflection gap, the fire block strip comprising:
a first portion extending along the first flange and attached to the first flange by an adhesive layer;
a second portion contacting the overhead structure, the second portion positioned between the first portion and the overhead structure;

wherein the second portion of the fire block strip is aligned with a corner between the web and the first flange;
wherein the first portion of the fire block strip includes an intumescent material portion and the second portion includes a foam material portion, wherein the first portion and the second portion form an integrated structure.