An article can be checked to meet specifications or have a specification number: this alone does not mean that the article is suitable for other uns validated uses. People who use the item (engineers, unions, etc.) or who indicate the item (building rules, government, industry, etc.) have a responsibility to consider the choice of available specifications, indicate the correct one, enforce compliance, and use the item correctly. Validation of suitability is required. The standard list of design specifications extends to 50 divisions or broad categories of working modes and work results involved in construction. The divisions are divided into sections each dealing with a particular type of material (concrete) or work product (steel door) of the work. The opposite of explicit specifications is a process of managing observations that are not specifications. The U.S. Food and Drug Administration has issued a non-binding recommendation that addresses precisely this point.  While North American specifications are generally limited to broad descriptions of the work, European specifications and construction work may include actual work volumes, including elements such as the construction area in square meters, such as a list of parts.
This type of specification is a collaboration between a specwriter and a volume surveyor. This approach is unusual in North America, where each bidder conducts a quantitative survey based on drawings and specifications. In many countries on the European continent, content that could be called “specifications” in the United States falls under the building code or communal order. .