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An organized listing of basic requirements for materials of construction, product compositions, dimensions, or test conditions; a number of organizations publish standards (for example, American Society of Mechanical Engineers, American Petroleum Institute, and American Society for Testing and Materials), and many companies have their own specifications. Also known as specs.
A quantitative description of the required characteristics of a device, machine, structure, product, or process.
A written document that accompanies the drawings describing the materials and workmanship required to carry out the works for each particular trade.