Product Features
Product Description
The Simpson Strong-Tie RCKWS 3-in. Kneewall Connector Stiffener (Model RCKW3S-R10) is a heavy 171 mil (7 ga.) stiffener engineered to nest directly onto the RCKW clip, boosting its overturning moment resistance and overall stiffness when load demands require additional capacity. The RCKWS has been developed to resist overturning moment at the base of exterior kneewalls and parapets as well as interior partial-height walls or overhead ribbon window conditions. Its screw holes and anchor holes align precisely with those in the RCKW clip, making fastener and anchor installation straightforward and efficient. This listing includes a quantity of 10 stiffeners. The RCKW clip and RCKWS stiffener are sold separately.
Key Features
- Purpose-Built Stiffener: 171 mil (7 ga.) stiffener nests onto and is secured to the RCKW clip with screws, optimizing overturning moment resistance and stiffness when additional load capacity is needed.
- 3-5/8 in. Framing Compatibility: RCKW3S features a large single bolt hole in the center sized for 3-5/8 in. framing.
- Stiffened Anchorage Flanges: Anchorage legs incorporate stiffened flanges, improving overturning moment resistance.
- Concrete Anchor Compatibility: Large-diameter anchor hole accommodates 1/2-in. diameter concrete screw anchors and wedge anchors, such as the Simpson Strong-Tie Titen HD heavy-duty screw anchor and the Strong-Bolt 2 wedge anchor.
- Structural Steel Attachment: Additional smaller-diameter anchor holes enable attachment to structural steel through use of #12 self-drilling screws.
- CMU Attachment: Attachment to CMU can be achieved with Titen HD or Titen Turbo concrete and masonry screw.
- Aligned Hole Pattern: Screw holes and anchor holes in the stiffener line up precisely with those in the RCKW clip, making fastener and anchor installation a snap.
- Corrosion Resistance: Galvanized (G90) finish provides reliable corrosion resistance for demanding jobsite environments.
- Width: 3 in.
- Made in the United States.
Specifications
- Model No.: RCKW3S-R10
- Width: 3 in.
- Thickness: 171 mil
- Gauge: 7 ga.
- Coating / Finish: Zinc Galvanized, G90
- Framing Size: 3-5/8 in.
- Packaging Quantity: 10
- Country of Origin: United States
Approved Applications
- Resisting overturning moment at the base of exterior kneewalls
- Resisting overturning moment at the base of parapets
- Interior partial-height walls
- Overhead ribbon window conditions
- Anchorage to concrete using 1/2-in. diameter concrete screw anchors or wedge anchors
- Anchorage to structural steel using #12 self-drilling screws
- Attachment to CMU using Titen HD or Titen Turbo concrete and masonry screw
What's Included
- 10 x Simpson Strong-Tie RCKWS 3-in. Kneewall Connector Stiffener (RCKW3S)
Frequently Asked Questions
- What is the purpose of the RCKWS stiffener, and when should it be used?
- The RCKWS stiffener is designed to add capacity when the RCKW clip alone is not sufficient for the load requirements. It nests directly onto the RCKW clip and is secured with screws, optimizing overturning moment resistance and stiffness at the base of exterior kneewalls, parapets, interior partial-height walls, or overhead ribbon window conditions.
- Is the RCKW clip included with this listing, and what connector does the RCKW3S stiffener pair with?
- No, the RCKW clip is sold separately. The RCKW3S stiffener is specifically designed to be used in conjunction with the RCKW3 clip. The screw holes and anchor holes in the stiffener align precisely with those in the RCKW clip, making fastener and anchor installation straightforward.
- What substrates can the RCKW3S stiffener be anchored to?
- The RCKW3S accommodates multiple substrate types. The large-diameter anchor hole accepts 1/2-in. diameter concrete screw anchors and wedge anchors, such as the Simpson Strong-Tie Titen HD heavy-duty screw anchor and the Strong-Bolt 2 wedge anchor, for use with concrete. Additional smaller-diameter anchor holes enable attachment to structural steel using #12 self-drilling screws. Attachment to CMU can be achieved with the Titen HD or Titen Turbo concrete and masonry screw.
- What are the material and finish specifications for the RCKW3S stiffener?
- The RCKW3S stiffener is 171 mil (7 ga.) steel with a G90 zinc galvanized finish for corrosion resistance. It has a width of 3 in. and features a large single bolt hole in the center sized for 3-5/8 in. framing. This listing includes a quantity of 10 stiffeners.
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