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Using the Results of Contractor-Performed Tests in Quality Assurance.
| 题名： | Using the Results of Contractor-Performed Tests in Quality Assurance. |
| 作者： | parker, f. turochy, r. e. |
| 关键词： | state transportation departments, kentucky, alabama, north carolina, new mexico |
| 摘要： | The results of extensive sampling and testing at the AASHO Road Test in the late 1950.s and early 1960.s revealed unexpectedly large variabilities in measured properties of highway construction materials and products. This has led to considerable changes in the way highway construction projects are managed. The overall construction quality assurance process that has evolved includes three basic elements depicted in Figure 1. Process (quality) control, acceptance and independent assurance procedures are integral parts of the quality assurance process. In the traditional separation of responsibilities, contractors are responsible for their quality control and state DOTs are responsible for acceptance and independent assurance. However, with the enactment of the federal regulation 23 CFR 637B in 1995 (2), the roles of state DOTs and contractors have become less clear and distinct. Under certain conditions 23 CFR 637B permits the use of contractor tests for acceptance which results in a mixing and mingling of traditional responsibilities. / Supplementary Notes: See also PB2008-107816. Sponsored by Transportation Research Board, Washington, DC. National Cooperative Highway Research Program. / Availability Note: Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0814；245p |
| 报告类型： | 科技报告 |
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