EVALUATION OF STATISTICALLY ORIENTED END-RESULT SPECIFICATIONS
This report is concerned with the review of data generated on projects let under the statistically oriented end-result specifications (ERS) on asphaltic concrete and portland cement concrete. The review covered analysis of data for determination of price reduction for deficient material and overall variability of data. The analysis and evaluation indicated: (1) an overall reduction of less than 0.5 percent in the contract unit price for asphaltic concrete and portland cement concrete; (2) at least 74 percent of all projects meeting the requirements for 100 percent pay; (3) a significant decrease in overall price reduction for asphaltic concrete since the first evaluation of 1975; (4) some increase (from 1975) in non-uniformity in the production phase of asphaltic concrete with little or no difference in the compaction phase; (5) good to excellent control in production and testing of concrete used as critical concrete; and (6) a need for continual evaluation, such as the one presented here, for enhancement of the state's overall quality assurance system. /FHWA/
- Record URL:
- This research was conducted in cooperation with the Department of Transportation, Federal Highway Administration.
Louisiana Department of Transportation and Development1201 Capitol Access Road, P.O. Box 94245
Baton Rouge, LA USA 70804-9245
- Shah, S C
- Publication Date: 1979-1
- Pagination: 68 p.
- TRT Terms: Asphalt concrete; Evaluation; Portland cement concrete; Prices; Specifications; Statistical analysis
- Subject Areas: Data and Information Technology; Highways; Materials;
- Accession Number: 00189965
- Record Type: Publication
- Source Agency: Federal Highway Administration
- Report/Paper Numbers: FHWA-LA-79-125 Final Rpt.
- Contract Numbers: Study No. 75-3G
- Files: TRIS, USDOT, STATEDOT
- Created Date: May 26 1979 12:00AM