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<br /> 1.00 <br /> 0.95 <br /> 0.90 <br /> 0.85 <br /> 0.80 <br /> 0.75 <br /> 0.70 <br /> 0.65 <br /> 0.60 <br />Yo <br />D 0.55 <br /> 0.50 <br /> 0.45 <br /> 0.40 <br /> 0.35 <br /> 0.30 <br /> 0.25 <br /> 0.20 <br /> 0.15 <br /> 0.10 <br /> 0.05 <br /> <br /> 8.0 "-' ~ / " / <br />i- .' <br /> , ,., 'I' II <br /> 7.0 .- """ I . <br /> ~I J / <br /> 6.0 -" " . I / <br /> .- -- I--- I <br /> 3 5.0 ~~ / <br />I-- OIBO /2 <br />1..,..0- -- -:J <br /> 4.0 ( <br /> I ~ <br /> 35 ft <br /> 3.0 ... <br /> 2.5 .. -'1 <br /> . <br /> 2.0 .J ( TW <br /> 1.5 11 }._.._.~ <br /> I <br /> 1.0 .J 01 <br />"" / <br /> ~ <br />0.5 ,..I I I I I <br /> / Yo = brink depth - <br /> 01 B03/2 = 0.0 D = height of box culvert <br /> - - 8 = width of barrel - <br />I a :: discharge <br />1/ 1W = tailwater depth - <br /> I I I I <br /> <br />o <br />o 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 <br /> <br />TW/D <br /> <br />Figure 111-9 Dimensionless Rating Curves for the Outlets <br />of Rectangulars Culverts on Horizontal and Mild <br />Slopes from Reference 111-2 <br /> <br />llI-14 <br />