closed specifications

closed specifications

Specifications stipulating the use of specific products or processes without provision for substitution.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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In contrast, closed specifications restrict the bidder, in varying degrees, as to which products, materials or means can be used.
Less restrictive, closed specifications, which include a list of adequate substitutions, often are referred to as bidder's choice.
* Closed Specifications. Closed specifications limit the contractor's choice of methods and materials.
Since there is a suggestion of discrimination when only one supply source can be used, closed specifications are not common in public contracts.
One advantage of using closed specifications is that the specification writer can precisely and easily describe the standard wanted.