A standard corrugated metal culvert carries a spring flood A standard corrugated metal culvert carries a spring flood disengage of 300 cfs, flowing full, with both inlet and outlet submerged. The pipe...

A standard corrugated metal culvert carries a spring flood disengage of 300 cfs, flowing full, with both inlet and outlet submerged. The pipe is 60 in, diameter, 200 ft long, on a 5 per cent slope. The water temperature is 40 degree F. If the tailwater level is 1 ft above the crown of the culvert at its outlet, how high must the highway shoulder be above the culvert crown at the inlet to prevent overtopping the embankment? The culvert has a vertical, flush, sharp edged headwall at both ends.