SkinnyBraces consist of two major components: The Structural Fuse assembly, and the Column. The Fuse assembly is very precisely engineered and manufactured. The column can be manufactured from a wide variety of stock steel sections. Each SkinnyBrace model was tested using the lightest Column possible to match the strength of the Structural Fuse.
Contractors generally prefer to embed the SkinnyBrace in the new concrete foundation. Using this method eliminates the need for attaching a heavy base-plate to the bottom of the SkinnyBrace, and eliminates uncertainty of setting anchor rods in the proper location.
Install the connector channels between framing members
Excavate a trench for the SkinnyBrace foundation
Install the SkinnyBrace to the connector channels
Assemble the reinforcing bar “cage” around the base of the SkinnyBrace column
Place concrete in the foundation trench, up to the bottom of the adjacent floor slab. After the foundation concrete has set (and shrunk slightly down into the trench) the last step is to pour a topping slab over the foundation to match the surface of the existing garage floor slab.
The installation described above can be anchored in the concrete using threaded rods run through the flanges of the columns and extending several feet into the concrete (this is especially useful when the SkinnyBrace is installed near the end of the concrete foundation). When the SkinnyBrace is installed several feet away from the end of the foundation it may be possible to eliminate the threaded rod anchors and rely on the steel reinforcing bars to capture the SkinnyBrace.
SkinnyBraces can also be supplied with a welded base-plate that matches the specimens we tested in the laboratory. The base-plate must be anchored to the new foundation with high-strength rods that match the connections used in our tests. The Design Professional must include the anchor rods in their design.
A third option is for the Design Professional to design a custom base-plate and have a local fabricator attach it to the SkinnyBrace. Quake Bracing LLC can provide and attach the custom base-plate, following the Customer’s engineered design.
Embedded column with threaded rod anchorage
This option generally allows the most economical, quickest installation.
Customer must provide:
Overall Column height
Size of top and bottom bars in foundation
Spacing between top and bottom bars (flange holes will be located so that threaded rod will fit within ties that enclose the top and bottom bars)
Size of threaded rod
Standard welded base-plate
Customer must provide height of SkinnyBrace Column.
Base-plate will be identical to the base-plate used on the SkinnyBrace test specimens.
Design Professional is responsible for anchor rod design.
Customer must provide height from top of base-plate to top of SkinnyBrace Column. As an alternative, the Column can be provided slightly longer than required and Customer’s fabricator can cut to exact length based on field measurements. Special Inspection by a third-party testing agency is typically required for any structural welding. Customer is responsible for payment of special inspection fees and engaging the services of a qualified special inspector.
If customer desires Quake Bracing LLC to provide and attach the base-plate, signed and sealed drawings from the Customer’s Design Professional are required. Quake Bracing LLC will provide Special Inspection services for welding the base-plate on to the Column.