Simpson Strong-Tie has redesigned its RCKW rigid kneewall connector for cold-formed steel construction to provide a two-anchor option for contractors using 1/2- or 3/8-inch diameter concrete anchors, resulting in efficient installation. When higher loads are required, the RCKW can be combined with the RCKWS stiffener to provide additional capacity for maximizing overturning moment resistance.
Fabricated from G90 galvanized steel, the RCKW and RCKWS have three large holes allowing either a one-anchor solution at the edge or center of a slab or a two-anchor solution for applications requiring higher capacities at the center of the slab. The screw holes and anchor holes in the stiffener line up with those in the RCKW clip, making fastener and anchor installation a snap.
In addition, Simpson Strong-Tie has tested the two-anchor solution with 3/8-inch diameter anchors, suited for shallower-embedment applications such as fluted decks. Features of the RCKW system include:
- Small and large anchor-hole patterns permit anchorage to both concrete and structural steel.
- Stiffened anchorage leg flanges provide greater overturning moment resistance.
- Large anchor holes accommodate 1/2-inch diameter Simpson Strong-Tie Titen HD heavy-duty screw anchors or Strong-Bolt 2 wedge anchors.
- Additional smaller-diameter anchor holes enable attachment to structural steel with #12 self-drilling screws.
- RCKWS stiffeners can be secured to the RCKW clip with screws, optimizing resistance to overturning and rotational moments.