Third-party peer evaluation: key to safe products
SkinnyBraces are evaluated by a third-party agency certified to internationally-recognized evaluation standards. Current code evaluation report is available at their website for Technical Evaluation Report TER 1711-02.
This independent review of test data, design, and quality control procedures is your assurance that our products perform and protect your building and your life.
Our typical test results
This is a "hysteresis plot"
Bigger loops (or "wings" if the above looks like a butterfly) mean a stronger specimen. Each loop represents one cycle of back-and-forth earthquake motion simulated in our tests. The more loops there are, the more durable the specimen. The blue loops in the center represent the minimum durability needed to meet the evaluation standards.
Steel "moment-frames" (our cumbersome competition) need to perform for two more test cycles beyond the blue loops. The SkinnyBrace test that produced the above graph did not fail until the yellow, green, and red loops were generated--that's almost sixty test cycles beyond the "minimum." Call us overachievers--we'll take it as a compliment.
Our "worst" test results
is this a blue butterfly?
Third-party evaluation means that the Building Department does not need to analyze our test data, or know what the graph above means. [In the graph above, the height of the “loops” indicates how much force the SkinnyBrace resisted, where taller loops represent greater force; the width of the loops shows how much back and forth movement it took to produce that force.] We send our data to qualified independent experts who analyze it and then give our products load ratings based on the test results and on applicable national standards.
The graph above shows how a manufacturing defect led to the failure of a SkinnyBrace specimen--the evaluation agency's job is to see that failure did not occur until the load on the specimen reached 3-1/2 times what the rated load is for this size of SkinnyBrace. This means you have a safety factor of 3-1/2; the industry standard requires a safety factor of only 2-1/2.