8- Corrugations: -------------------- Description: Corrugations are a series of transverse ridges and valleys (or ripples) occurring at regular intervals along the pavement. ------------------------------------------- Possible Causes: -------------------- 1- Unstable bituminous mixture 2- Poor base quality ------------------------------------------- Severity Level: ------------------ Low: Noticeable effect on ride, but no significant reduction in comfort. Medium: Moderate ride discomfort is noticeable, driver able to maintain vehicle control easily. High: Vehicle vibration is severe, speed reduction is necessary for comfort and to maintain vehicle control. ------------------------------------------- Extent Level: ---------------- Occasional:Less than 10% of the section length is affected by this distress. Frequent: Between 10% and 30% of the section length is affected by this distress. Extensive: Greater than 30% of the section length is affected by this distress.
Posted on: Sat, 27 Sep 2014 20:42:05 +0000
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