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Last modified
1/25/2010 6:27:01 PM
Creation date
10/4/2006 11:40:45 PM
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Floodplain Documents
County
Statewide
Basin
Statewide
Title
Engineering and Design Hydraulic Design of Flood Control Channels
Date
7/1/1991
Prepared By
US Army Corps of Engineers
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />EM 1110-2-1601 <br />1 Jul 91 <br /> <br />Table 2-5 <br />Sugg_ted llaximum Permiaible ....... CIuInneI Veloc:ill_ <br /> <br />Channel MatsriaJ <br /> <br />Mean Chamel <br />Veloc:ity, Ips. <br /> <br />2.0 <br /> <br />Fine Sand <br /> <br />Coarse Sand <br /> <br />4.0 <br /> <br />Fine Gravell <br /> <br />6.0 <br /> <br />Earth <br />Sandy Silt <br />Si~ Clay <br />Clay <br /> <br />2.0 <br />3.5 <br />6.0 <br /> <br />Grass.Jined Earth <br />(slopes less <br />Ihan 5,..)2 <br />Bermuda Grass <br />Sandy Silt <br />Si~ Clay <br /> <br />6.0 <br />B.O <br /> <br />Ken1uc:ky Blue <br />Grass <br />Sandy Silt <br />Sill Clay <br /> <br />5.0 <br />7.0 <br /> <br />Poor Rock (usueJly <br />sedimentary) <br />Soft SandsfDne <br />Soft Shale <br /> <br />10.0 <br />B.O. <br />3.5 <br /> <br />Good Roc:k (usually <br />igneous or hard <br />melamorphic) <br /> <br />20.0 <br /> <br />1 FOl" particles larger Ihan fine gravel (about 20 miDimelres (mm) . <br />3/4 in.), S88 Plates 29 and 30. <br />2 Keep veloc:ities less Ihan 5.0 Ips unless good 00_ and proper <br />maintenance can be obtained. <br /> <br />2-16 <br />
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