What is a key characteristic of performance specifications?

• A. They name the product by brand
• B. They describe the required performance outcome
• C. They specify the means and methods of construction
• D. They require third-party tests exclusively

Answer: (B)

Performance specifications state what the finished element must achieve in use rather than dictating a specific product or exactly how it must be built. They describe the required performance outcome—such as how much load a component must carry, its fire rating, weather resistance, or energy performance—and leave the selection of product and the means of achieving that outcome open, as long as the criteria are met. This approach encourages competition and innovation because suppliers can propose different products or methods that satisfy the performance requirements. Verification is typically through tests, calculations, or certifications to prove the performance, but it does not inherently require naming a brand, detailing construction means and methods, or mandating third-party testing exclusively.