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<br /> <br />x.2.2.? Outlet Protection <br />-~ structurally lined apron (generally with rinrap, grouted riprap, or concrete) <br />placed at the outlet of pipes or paved channel sections. <br />Application <br />• Used as an energy dissipation device to prevent scour and erosion at the outlet <br />by reducing the velocity and enemy of concentrated flow see figure .."?3). <br />• Used as a temporary or permanent feature. <br />Pipe Outlet to Flat Area- <br />No Well-aelinea Channel <br />A <br />A <br />Plan <br />i <br />_ t ¢aJ alnp Ill= <br />~ul <br />Saenon AA Filter <br />blanket <br />I IIII~ <br />~~Ilil <br />e.~.>. <br />F,Iter <br />btan•ei <br />~I <br />~ I I <br />~I II <br />lilt Yl~':'.~ Section A.: ~ ~"-~-~{.a <br />Figure 1l <br />Typical Culvert Outlet Apron Installation <br />(COOT 1995) <br />Pipe Outlet to Well-0etineo <br />Channel <br />