Deflection / Head Of Wall
Deflection is the amount of bend, or "give" a structure experiences because of a load. In non load-bearing walls, this vertical movement can be caused by a number of reasons (live-load, seismic activity) which will damage walls if not accounted for. This vertical movement is typically accounted for on each level where the top of the wall(s) are designed to move.
With conventional material deflection is accomplished with either deep leg or slotted track. The slotted systems are more expensive, and both systems install with a high degree of attention to detail that is frequently not adhered to. With the TRAKLOC Drywall Framing System deflection is accomplished with the stud, more specifically with the insert of the stud, eliminating the need (and expense) of either of the specialty tracks or variance in the framing process.
Trakloc’s deflection insert provides a full inch of deflection (+/- ½”) while also allowing for 2 inches of stud height variability. As illustrated in the Component section, the deflection insert (TSE w-Deflection) and Trakloc’s standard insert (TSE) are the same, except the deflection insert has a 3” x ¾” slot punched into the top of each flange. These slots allow the drywall screw to pass through the board and the TSO, while avoiding contact with the TSE.
The unique method by which the Trakloc Steel Framing system accounts for deflection eliminates the two most common mistakes made with conventional material. With deep leg track, many installers raise the stud off the bottom track to have it fit into the top track. This method places the load bearing capabilities on the screw, not on the stud which is out of spec. When using slotted top track, the top screw is often either too high or too low, both of which are also out of spec. Trakloc’s® slotted insert eliminates both pitfalls.