Abstract: A fire-rated wall assembly includes a first wall and a second wall. The first wall can be an exterior curtain wall including a window mullion and a glass panel extending away from the window mullion. The second wall can be an interior stud wall including a stud positioned adjacent to the window mullion. A wallboard is coupled to the stud and has a cantilevered portion between the stud and the glass panel. The wallboard has an end surface facing and spaced from the glass panel to create a gap therebetween. A wallboard support is coupled to the stud and extends toward the glass panel. The wallboard support is positioned between the stud and the cantilevered portion of the wallboard. An elongated fire-rated component is coupled to the wallboard. At least a portion of the elongated fire-rated component is positioned within the gap.

Abstract: A fire-rated wall assembly includes a first wall and a second wall. The first wall can be an exterior curtain wall including a window mullion and a glass panel extending away from the window mullion. The second wall can be an interior stud wall including a stud positioned adjacent to the window mullion. A wallboard is coupled to the stud and has a cantilevered portion between the stud and the glass panel. The wallboard has an end surface facing and spaced from the glass panel to create a gap therebetween. A wallboard support is coupled to the stud and extends toward the glass panel. The wallboard support is positioned between the stud and the cantilevered portion of the wallboard. An elongated fire-rated component is coupled to the wallboard. At least a portion of the elongated fire-rated component is positioned within the gap.