Self-aligning, double wire corner bead for fireproofing structural steel member and method of using same
View Patent ↗A self-aligning, double wire corner bead for fireproofing structural steel along a plurality of surfaces, the corner bead having a single strip of welded wire fabric cut to a predetermined width for the fireproofing thickness and bent along a plurality of longitudinally extending lines, to provide a profile having a plurality of dihedral angles is disclosed. A nose is installed along two edges. A method of finishing the corners for fireproofing of structural steel member using an improved corner bead includes the step of attaching the corner bead through a lath to the structural steel member utilizing fasteners. The mesh of the corner bead provides a dam to form a roughened surface on the first application of fireproofing material until it hardens.
1. A corner bead for fireproofing a member along a set of surfaces of the member, comprising:
a welded wire fabric;
a set of bends integrally formed in the welded wire fabric;
a first wing defined by the set of bends;
a single wire membrane defined by the set of bends, adjacent to the first wing;
a double wire membrane defined by the set of bends, adjacent to the single wire membrane;
a second wing defined by the set of bends, adjacent to the double wire membrane;
a set of generally planar surfaces defined by the first wing and the second wing; and,
wherein the welded wire fabric is only fastened to the member at a first fastening position on the double wire membrane.
2. The corner bead of claim 1 , further comprising:
a first nose attached to the first wing; and,
a second nose attached to the second wing.
3. The corner bead of claim 1 , further comprising:
a first angle between the first wing and the single wire membrane;
a second angle between the single wire membrane and the double wire membrane; and,
a third angle between the double wire membrane and the second wing.
4. The corner bead of claim 3 , wherein the first angle is substantially equal to the third angle.
5. The corner bead of claim 3 , wherein each of first angle and the third angle is in a range from approximately 90 degrees to approximately 180 degrees.
6. The corner bead of claim 1 , further comprising a dam defined by the set of generally planar surfaces.
7. The corner bead of claim 1 , wherein the double wire membrane further comprises:
a first leg adjacent to the single wire membrane; and,
a second leg adjacent to the first leg and the second wing.