Commissioners require variance for pavement testing outside TxDOT 3-41 timelines
After engineers recommended accepting delayed core-testing only on a variance-by-variance basis, the court directed staff to follow TxDOT specification 3-41 and instructed that projects not meeting that standard come to court for a variance.
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County engineers and an outside consultant (Mason, S16) presented questions about whether cores and subsequent testing taken outside TxDOT 3-41 timeframes should be accepted administratively. Mason explained that coring and testing soon after placement yield standard air-void and density metrics and that delayed testing can reflect traffic and altered material properties.
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