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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />i I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Lesson 3 <br /> <br />Culvert Design - Participant Workbook <br /> <br /> <br /> <br />3.8 Precast End Section <br /> <br />3.9 Beveled Inlet <br /> <br />CULVERT INLETS <br /> <br />. SELECTION OF AN INLET BASED ON: <br />- structural stability <br />- aesthetics <br />- erosion control and fill retention <br />- hydraulic periormance <br />- economics and safety <br /> <br />3.10 Culvert Inlet Selection <br /> <br />C. Structural stability, aesthetics, erosion control, fill retention, hydraulic <br />performance, economics and safety are considerations in the selection of <br />an inlel. <br /> <br />CULVERT INLETS <br /> <br />. SELECTION OF AN INLET BASED ON: <br />- structural stabiHty <br />- aesthetics <br />- erosion control and 1m retention <br />- hydraulic performance <br />- economics and safety <br />. BEVELED EDGES PERFORM BETTER THAN <br />SQUARE EDGES <br /> <br />GontracllonolFlow <br />ReduresEffecbWi <br />B"rrel$,ze <br /> <br />Mm.mal ConlfaC/Ion of Flow <br />Maxlmm.s emchv., <br />Berm'Size <br /> <br />Square Edge <br />Entrance <br /> <br />Beveled Edge <br />Entrance <br /> <br />3.11a Culvert Inlet Selection (cont) <br /> <br />D. Hydraulic performance is improved by use of beveled edges rather than <br />square edges. <br /> <br />3.11 b Beveled Inlet Schematic <br /> <br />3-5 <br />