Fire-rated joint system
View Patent ↗A fire-rated angle piece and wall assemblies or other assemblies that incorporate the fire-rated angle piece, in which the angle piece can include an intumescent or other fire-resistant material strip. The angle can be attached adjacent to a corner of a framing member, such as metal tracks, headers, header tracks, sill plates, bottom tracks, metal studs, wood studs or wall partitions, and placed between the framing member and a wall board member at a perimeter of a wall assembly to create a fire block arrangement. A fire spray material can be applied over a portion of the angle piece.
1. A fire-rated assembly for a linear wall gap, comprising:
a track that has a web, a first flange and a second flange, wherein the web is substantially planar and has a first side edge and a second side edge, the first flange and the second flange extend in the same direction from the first and second side edges, respectively, wherein each of the first and second flanges is substantially planar such that the track defines a substantially U-shaped cross section;
an angle piece comprising a first flange, a second flange oriented at a first angle relative to the first flange, a flap oriented at a second angle relative to the first flange, the second flange and the flap each having a free edge, the first flange and the second flange being connected to one another along an edge thereby defining a first corner and the first flange and the flap being connected to one another along an edge thereby defining a second corner, the first and second flanges and the flap being formed from a single piece of material; and
a heat-expandable intumescent strip attached to the angle piece,
wherein, in use, the first flange of the angle is positioned facing an overhead structure with the second flange of the angle being positioned facing one of the first or second flanges of the track.
2. A fire-rated wall joint product, comprising:
an elongated, generally L-shaped angle piece comprising a first flange, a second flange oriented at a first angle relative to the first flange, the second flange having a width greater than the first flange, and a flap oriented at a second angle to the first flange and extending toward the second flange, the second flange and the flap each having a free edge, the first flange and the second flange connected to each other along an edge thereby defining a first corner, the first flange and the flap connected to one another along an edge thereby defining a second corner, the first flange and the flap having planar portions, the first and second flanges and the flap being formed from a single piece of material; and
an intumescent material strip applied to an exterior surface of the first flange, wherein a width of the intumescent material strip is equal to or less than about one-half a width of the first flange.
3. The fire-rated wall joint product of claim 2 , further comprising a second intumescent material applied to an exterior surface of the second flange.
4. The fire-rated wall joint product of claim 2 , wherein the second flange further comprises a kickout portion such that a lower portion of the second flange is parallel to the upper portion of the second flange.
5. The fire-rated wall joint product of claim 2 , wherein the flap further comprises a second intumescent strip applied to an interior surface of the flap.
6. A fire-rated wall joint product, comprising:
an elongated, generally L-shaped angle piece comprising a first flange, a second flange oriented at a first angle relative to the first flange, and a flap oriented at a second angle to the first flange, the second flange and the flap each having a free edge, the first flange and the second flange connected to each other along an edge thereby defining a first corner, the first flange and the flap connected to one another along an edge thereby defining a second corner, the first flange and the flap having planar portions, the first and second flanges and the flap being formed from a single piece of material; and
an intumescent material strip applied to an exterior surface of the first flange, wherein a width of the intumescent material strip is equal to or less than about one-half a width of the first flange, wherein the flap further comprises a first section and a second section oriented at an angle relative to the first section, the first section and the second section being connected to one another along an edge defining a corner, the second section substantially parallel to the first flange.
7. The fire-rated wall joint product of claim 2 , wherein the intumescent material strip wraps the first corner between the first flange and the second flange.
8. A fire-rated wall joint product, comprising:
an elongated piece comprising a strap having a free edge and a hem having an outwardly curved portion that folds over and overlaps a lower portion of the strap, the strap and the hem being formed from a single piece of material; and
an intumescent material strip applied to an exterior surface of the strap and extending beyond the free edge of the strap.
9. A fire-rated wall joint product, comprising:
an elongated piece comprising a strap having a free edge and a hem having an outwardly curved portion, the strap and the hem being formed from a single piece of material; and
an intumescent material strip applied to an exterior surface of the strap and extending beyond the free edge of the strap,
wherein the strap further comprises a kickout portion such that a lower portion of the strap is parallel to the upper portion of the strap.
10. The fire-rated wall joint product of claim 9 , wherein the strap has a two-ply section having a first layer and a second layer such that the free edge of the strap is adjacent the kickout portion of the strap, the two-ply section forming a gap between the first layer and the second layer.
11. The fire-rated wall joint product of claim 10 , wherein an intumescent material is applied within the gap.
12. The fire-rated assembly of claim 1 , wherein each of the first flange and the second flange are planar.
13. The fire-rated assembly of claim 1 , further comprising a second intumescent material applied to an exterior surface of the second flange.
14. The fire-rated assembly of claim 1 , wherein the second flange further comprises a kickout portion such that a lower portion of the second flange is parallel to the upper portion of the second flange.
15. The fire-rated assembly of claim 1 , wherein the flap further comprises a second intumescent strip applied to an interior surface of the flap.
16. The fire-rated assembly of claim 1 , wherein the flap further comprises a first section and a second section oriented at an angle relative to the first section, the first section and the second section being connected to one another along an edge defining a corner, the second section substantially parallel to the first flange.
17. The fire-rated assembly of claim 1 , wherein the intumescent material strip wraps the first corner between the first flange and the second flange.
18. The fire-rated assembly of claim 1 , further comprising:
at least one vertical wall stud extending in a vertical direction between the first and second flanges of the web; and
at least one wallboard member supported by the at least one vertical wall stud,
wherein at least one of the first and second flanges of the track is positioned between the at least one wallboard member and the at least one vertical wall stud, and the second flange of the angle is positioned between the at least one wallboard member and the at least one of the first and second flanges of the web.
19. The fire-rated assembly of claim 18 , wherein the first flange and the flap of the angle piece are positioned between the at least one wallboard member and the overhead structure.