If a manufacturer tests a chair, for example, with certain components, is it safe to assume that the same components would perform similarly in other types of style products?
A. This is a question which addresses classification of products. It is important to remember that TB 133 is a fire-performance test of a finished product, or “mock-up,” and the way the product performs in the test is the only criteria that concerns the bureau. The bureau’s TB 133 regulations do not specify the amount or type of testing that manufacturers should conduct. In fact, the bureau’s regulations specifically state that testing is at the discretion of the manufacturer. It is not the bureau’s intent that a manufacturer test one of every product made. Classification of furniture is certainly possible. For example, it may be possible for a manufacturer, who makes 100 different products, to classify those products into groups which could be represented by, for example, 5-10 TB 133 tests. The classification should address worse case conditions, and should be based upon the styles of furniture made, the kinds of upholstery fabrics used, and whether or not fire blockers are used. The
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