Benefits of SkinnyBraces
SkinnyBraces fill a need that their inventor, structural engineer Thor Matteson, saw for years: an efficient bracing method for vulnerable soft-story buildings that could fit into congested garages. Benefits include the following:
Compact: An 8-inch wide (or should we say 8-inch skinny?) SkinnyBrace can resist 2,400 pounds of earthquake force—a good size for bracing a house over a garage. Our largest SkinnyBrace is rated for 11,875 pounds, and is only 13 inches wide. No other commercially available system can provide this capacity in such a narrow space. A plywood shear wall would need to be at least 13 feet wide to provide this strength.
Easy to install: Our engineered steel brackets adjust to fit between the wood framing members found in most existing buildings, and can be installed using tools that most contractors already have
Easy to inspect: SkinnyBraces come preassembled, and the unit connects to the steel connection brackets with four bolts. All connections are visible and easy to access. We even provide feeler-gauges used to confirm that the bolts are tightened properly!
No welding: Custom steel frames almost always require onsite welding. This requires an additional specialty contractor, a third-party Special Inspector (who will typically charge $500 per site visit in the SF Bay Area), and every once in a while will set your project on fire.
Replaceable parts: The Structural Fuses can be replaced after an earthquake by removing just three bolts and reinstalling them after placing new Structural Fuses. Competitors’ products are either not replaceable at all, or require removal and reinstallation of 40 to 48 bolts
Efficient: The Structural Fuses are engineered and precision manufactured to maximize earthquake energy dissipation; this means your engineer can design the entire earthquake force resisting system in your building based on reduced earthquake forces (Engineers refer to the “R factor”, where higher is better; SkinnyBraces have an R of 6-1/2; custom steel columns use an R of 2-1/2. This means an earthquake retrofit system that uses a custom steel column must be designed to resist over twice as much earthquake force as a the same system using a SkinnyBrace)
Ductile: The Structural Fuses in SkinnyBraces are precision cut from very ductile “high-strength, low alloy” steel plate that can deform repeatedly under high seismic loads. This means that the Structural Fuses absorb the earthquake energy instead of transferring it into your building, thus reducing earthquake damage.