Research of sampling and testing rates for project tests listed in the Guide Schedule shows that the risk of either rejecting "good" material or accepting "bad" material ranges from 20 percent to 40 percent. Use this baseline for sampling and testing. Increase the frequency of testing for high-variability materials and when testing results do not meet specifications
Current Guide
Previous Guides
Copyright 2017
•
Texas Department of Transportation
•
All Rights Reserved
•
Disclaimer
•
Privacy & Security Policy
•
Accessibility
125 East 11th Street
•
Austin, Texas 78701