United States Department of Transportation
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Techbrief: Optimal Procedures of Quality Assurance Specifications
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2003-10-01
[PDF-736.64 KB]
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Abstract:This TechBrief describes a manual (Federal Highway Administration report number FHWA-RD-02-095) for use by highway agencies when developing new, or modifying existing, acceptance plans and quality assurance specifications. The manual provides necessary instruction and illustrative examples to lead the agency through the entire process of acceptance plan development, including: setting up the initial data collection/experimentation to determine typical parameters of current construction; establishing the desired level of quality to be specified; designing the actual acceptance plan, including selecting quality characteristics, statistical quality measure, buyer's and seller's risks, lot size, number of samples (sample size), specification and/or acceptance limits, and payment-adjustment provisions; monitoring how the acceptance plan is performing; and making necessary adjustments. The overall specification development and implementation process is divided into three primary phases: initiation and planning; specification development; and implementation. Steps for each phase are summarized in this brief and discussed in detail in the manual.
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Content Notes:This TechBrief is disseminated under sponsorship of the U.S. Department of Transportation in the interest of information exchange. The TechBrief provides a synopsis of the study's final publication. The TechBrief does not establish policies or regulations, nor does it imply Federal Highway Administration endorsement of the conclusions or recommendations. The U.S. Government assumes no liability for the contents or their use.
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