CHAPTER 2 BARRIER WARRANTS

Barrier Warrants ________ November 2005Table 2.4: Drainage FeaturesPotential Hazard Group 1(Low Severity)Group 2(ModerateSeverity)Group 3(High Severity)Cross Drain Culvert Ends:Exposed culvert ends with no headwalls, 1 m(36 in) in diameter or lessExposed culvert ends with no headwalls,greater than 1 m (36 in) in diameterSloped culvert ends, less than 1.2 m (4 ft) indiameterSloped culvert ends, greater than 1.2 m (4 ft)and less than 2.4 m (8 ft) in diameterSloped culvert ends, 2.4 m (8 ft) or greater indiameterVertical headwalls, less than 1.0 m (3 ft) inheightVertical headwalls, 1 m (3 ft) or higherHeadwalls with parallel sloped wingwalls, 0.6m (2 ft) or less heightHeadwalls with parallel sloped wingwalls,greater than 0.6 m (2 ft) heightHeadwalls with flared and sloped wing walls,1.0 m (3 ft) or less heightHeadwalls with flared and sloped wing walls,greater than 1.0 m (3 ft) heightCulvert end sections with crashworthy gratesXXXXXXXXXXXXParallel Drain Culvert Ends:Exposed culvert ends with no headwalls,less than 0.6 m (2 ft) in diameterExposed culvert ends with no headwalls, 0.6m (2 ft) and less than 1.2 m (4 ft) in diameterExposed culvert ends, 1.2 m (4 ft) or greaterin diameterMitered culvert ends, less than 1 m (3 ft) indiameterMitered culvert ends, 1 m (3 ft) or greater indiameterVertical headwalls, less than 1 m (3 ft) aboveditch sectionVertical headwalls, 1 m (3 ft) or higher aboveditch sectionXXXXXXX________________________________________________________________________Identify Potential Hazards 2-9