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; anda 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
Continuation of application Ser. No. 09/436,527 filed Nov. 9. 1999.
US Referenced Citations (15)
Continuations (1)
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Number |
Date |
Country |
Parent |
09/436527 |
Nov 1999 |
US |
Child |
09/900563 |
|
US |