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SEDCADi CUL\'ERT SIZING UTILITI' <br />CULVERT .,3 <br />Dcsil;n Discharbc = <br />LnLr:,ncc• L~sa+ Ou~_ f f icicnl. _ <br />• Pipc Length = <br />Piyc Slupc <br />Manning':.: n = <br />?1:,::innun IIe:,dwsLer = <br />T:silwaLcr DcJ,th = <br />0.230 cfs <br />O.G <br />10.000 feet <br />2.000 "~ <br />0.0"_I <br />9.000 feet <br />0.000 fceC <br />Smallest Di:uuctcr Fvquiru~ Lo 1'am:; P]. u,. is G i„chcs <br />PEP.PORM:INCE CUR\'1:S <br />Di:uucLcr: d iuchcrs <br />~~ <br />Ih:aQwrsCcr Discl,:u•ge Plow <br />(fL) (ef~) CouLrol 'fyx,c, <br />0.00 0.00 0 <br />O. GO 0.01 0 <br />0.90 0.01 n <br />1.2o G.o~ o <br />l.r'n ~.~~ [] <br />1.30 0.09 0 <br />2.10 0.09 0 <br />x.•10 O.Od 0 <br />2.70 o.o~J e <br />9.00 o.on o <br />Diameter: G inclxcs <br />IIe:ulwaLcr Pi:;cls:u•gc P.lo,. <br />(ft) <br />------------- (cfs) <br />------------ Control <br />------------------------ Typu <br />--------- <br />0.90 0.0.1 0 <br />O. GO 0.03 0 <br />0.00 0.12 Outlet (SuLcritical) 1 <br />1.:.0 0.17 Outlet (:.utscrlLr.cu1) 1 <br />1.00 0."21 Outlet (SubcriCical) 1 <br />1.30 U._6 OuC1cL (auLcritical) 1 <br />x.10 0.~0 Outl~L (SuUcritical) 2 <br />x.10 0.91 Outlet (SuLcriLica,l) ^_ <br />C.iO 0.91 Outlet (a^uUc•,riLical) .. <br />x.00 O.d2 Outlet (SuUcriLical) 2 <br />Di:.uueLer: 3 inches <br />IIcaJ,aaler D.isch:u•ge Plow <br />(fL) {.,f::) c„nLx•u.l •ryp~ <br />------------- <br />0.00 -------------- <br />0.90 ------------------------ <br />OuClct (5ubcriCir.,1) ------- <br />2 <br />O.GO O.GO In1eL (Supercritical) l <br />_ 0.00 0.91 Iss1cL G <br />1.20 1.0.1 OuC1eL G <br />1.60 1.00 OuLlct G <br />1.70 1.1.G Oullel C <br />2.10 t..0 OuL.T.•.L r: <br />Exhibit 18 -315j- Revised 9/27/91 <br />