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When A = 1.9 ft2 then V coverges. The catchpool top is circular with A =5b.75 fiz <br />flow is down the side of the catchpool. The top of the culvert is circular with <br />A = 3.93 ft~, so flow is down the side of the culvert. Slope increases in each <br />transition so no inlet control. <br />*referred to on previous page: U.S. Department of Transportation, 1965 <br />Hydraulic Charts for the Selection of Highway Culverts. <br />Hydraulic Engineering Circular No. 5. <br /> <br /> <br />• <br />