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<br />I <br />I <br />I <br />I <br />II <br />II <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Lesson 4 <br /> <br />Demonstration and Problem Session - Participant Workbook <br /> <br />Perlormance curve: <br /> <br />= <br />-252 <br />r:: <br />o <br />- <br />~ <br />.!! <br />w250 <br />.. <br />Jl <br />; <br />'tl <br />m 248 <br />::J: <br /> <br />DISCUSSION: <br /> <br />Performance Curve <br /> <br />254 <br /> <br /> .;I it <br /> ~ ti'" <br /> -'" <br /> t'" ,#' <br /> JI <br /> "'" .. <br /> J .... <br /> ~ . <br /> I --' ..- <br /> -- <br /> V .. -- v <br /> 41 --- -- <br /> I' ./ <br />II v <br />IV <br /> In let Control Outlet Control Perlormance Curve <br />- - -+- - <br /> lIIilllUl!!lRlR <br />I I I I I I I I I I I I I I I I <br /> <br />246 <br /> <br />o <br /> <br />50 100 150 <br />Discharge (cfs) <br /> <br />200 <br /> <br />. Tapered inlets are not justified since the culvert operates in outlet control <br />throughout the considered performance curve <br />. Energy dissipators are not needed because of the relatively low outlet <br />velocities <br />. No apparent sedimentation or fishery problems <br />. Remember to document all assumptions and calculations, and file <br />accordingly <br /> <br />4-9 <br />