Abstract
Quantified checklists provide a generalized measure of the workmanship of a constructed product and of processes. Checklists are developed by selecting important attributes from program standards such as specifications, drawings, or manufacturer’s information. Inspectors examine each attribute and mark it as either conforming (yes), nonconforming (no), or not applicable. The percentage of attributes that conform to the requirements is determined by dividing the number of conforming events by the total number of events inspected and converting the ratio to a percentage. Practical experience with the development and management of checklists is described, and theory about inspection by the method of attributes is provided. The Construction Operations Section of the Arizona Department of Transportation is using the results to analyze specification effectiveness and manage inspection and quality processes. There is also potential for the concept to be refined for use as a means of determining payment of incentives or disincentives and for engineering analysis.
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