CULVERT SLOPE EFFECTS ON OUTLET SCOUR

A circular shaped culvert was tested with 0, 2, 5, 7, and 10% slopes. The scour hole characteristics of depth, width, length and volume after 316 minutes of testing were correlated to the discharge intensity for each slope. The results indicated that a sloped culvert can potentially increase the maximum dimensions of scour by 10 to 40 percent over those for a horizontal culvert.