Claims
- 1. A stud for construction of seismic and fire resistant shaft walls comprising:
a vertical web; an anterior flange no less than 4.12 centimeters wide extending transversely from said vertical web possessing a distal portion, an exterior side and an interior side; a posterior flange no less than 6.35 centimeters wide possessing a distal portion, an exterior side and interior side extending transversely from said vertical web substantially parallel to said anterior flange; said posterior flange extends further from said vertical web than said anterior flange thereby defining a substantially “J-shape” cross-section; a plurality of horizontal slots spaced vertically apart and substantially parallel to one another incorporated along the vertical length of said posterior flange to slideably attach wallboard material thereto.
- 2. The stud as defined in claim 1 wherein said slots in said posterior flange are 3.81 centimeters long and 0.635 centimeters wide and spaced apart 2.54 centimeters center to center.
- 3. The stud as defined in claim 1 wherein an anterior stiffening lip depends perpendicularly from the distal portion of said anterior flange toward the posterior flange; and
a posterior stiffening lip depending perpendicularly from the distal portion of said posterior flange toward the anterior flange.
- 4. The as defined in claim 3 wherein said anterior stiffening lip is bent acutely and parallel to said anterior flange, and said posterior stiffening lip is bent acutely and parallel to said anterior posterior flange.
- 5. A stud for construction of seismic and fire resistant shaft walls comprising:
a vertical web; an anterior flange no less than 4.12 centimeters wide extending transversely from said vertical web possessing a distal portion, an exterior side, and an interior side; a posterior flange no less than 6.35 centimeters wide possessing a distal portion, an exterior side and interior side extending transversely from said vertical web substantially parallel to said anterior flange; said posterior flange extends further from said vertical web than said anterior flange thereby defining a substantially “J-shape” cross-section; an anterior stiffening lip depending perpendicular from the distal portion of said anterior flange toward the posterior flange; a posterior stiffening lip depending perpendicular from the distal portion of said posterior flange toward the anterior flange; a plurality of horizontal slots spaced vertically apart and substantially parallel to one another incorporated along the vertical length of said posterior flange to slidably attach wallboard material thereto.
CROSS-REFERENCES TO RELATED APPLICATIONS
[0001] Continuation of application Ser. No. 09/436,527
Continuations (1)
|
Number |
Date |
Country |
Parent |
09436527 |
Nov 1999 |
US |
Child |
09900563 |
Jul 2001 |
US |