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DRAIN1a.xis/NCSL(30%Design) (E) <br />E <br />DRAINAGE CALCULATIONS <br />PROJECT TITLE North COUntV <br />Landfill <br />REFERENCE DRAWING: <br />RETURN PERIOD: 100- yr <br />CALCULATIONS BY: <br />ESA <br />PROJECT NUMBER: <br />118040/01000000 <br />DATE: 1 Jul 07 <br />DESCRIPTION OF WORK: Drainage Calculations (30% Design) East Perimeter Ditch <br />CHECKED BY: <br />DATE: <br />DESIGN DRAINAGE RUNOFF <br />CXA SUM (A) COMP. <br />OVERLAND <br />POINT I.D. 8 AREA COEFF. <br />COEFF. <br />LENGTH <br />SLOPE <br />LENGTH <br />GUTTERJCHANNEL/CONDUIT TRAVEL TIME <br />SLOPE MANNING <br />RAINFALL DISCHARGE <br />DRAINAGE FACILMES <br />HM VELOCITY OVERLAN <br />GUTTER <br />TIMEOF TOTAL <br />INTENSITY <br />SUBAREA <br />TOTAL <br />RADIUS V Ti <br />CHANNEL <br />CONC. Tc <br />I <br />Oa <br />Qt <br />CONDUIT <br />Tc <br />{acres) <br />(aces)cedes) <br />(I.) <br />{PVh} <br />(teat} <br />(IVR) (teat) <br />) <br />((Vsec} (m(n13.1 <br />Tp <br />(min.) (min.) <br />(Nhour) <br />(cls) <br />AS 3.3 0.8 <br />1.99 <br />120 <br />0.33 <br />500 <br />0.005 0.03 0.895 <br />2.6 <br />5.8 <br />4.67 <br />9.3 <br />4.6 <br />Perimeter Battt3t w! Drainage Oitch <br />65.4 <br />36' CMP Dawndmin <br />1052 <br />Confluence O - <br />01 4.1 0.6 <br />2.40 <br />Downdrain - DD4 <br />15D <br />0.03 <br />450 <br />0.02 0.03 0.37 3.81 7.6 <br />2.1 <br />9.7 <br />3.31 <br />82 <br />4.1 <br />OlversMn Berm w/ Drainage Duch <br />82 <br />18' CMP D-xkain <br />D2 33 0.8 <br />1.97 <br />1000.33 <br />S00 <br />0.02 0.03 0.447 4.10 2.8 <br />2.0 <br />5.0 <br />4.88 <br />9.6 <br />4.8 <br />LF Bench W Oremsge Ditch <br />15.9 <br />24' CMP Downdmin <br />03 3.8 0.8 <br />2.30 <br />150 <br />033 <br />500 <br />0.02 0.03 0.447 4.10 3.4 <br />2.0 <br />55 <br />4.73 <br />10.9 <br />SA <br />LF Bench w/ Drainage pitch <br />26.8 <br />2d' CMP Downdmin <br />04 4.7 0.6 <br />2.80 <br />150 <br />0.33 <br />500 <br />0.02 0.03 0147 4.10 3.4 <br />2.0 <br />5.5 <br />4.73 <br />13.2 <br />6.6 <br />LF Bench w/ Orahtage Ditch <br />40.0 <br />30' CMP Downdrain <br />DS 42 0.6 <br />253 <br />120 <br />0.33 <br />500 <br />0.005 0.03 0.895 325 3.1 <br />2.8 <br />5.8 <br />4.67 <br />11.8 <br />5.9 <br />Perimeter Bench w/ Orahuge pitch <br />51.6 <br />30- CMP Downdmin <br />DB 24 0.8 <br />1.45 <br />1000 <br />3.0 <br />SB <br />4.61 <br />6.7 <br />Perimeter twharea Row <br />52.4 <br />30' CMP Doandrain <br />11B <br />2.29 <br />130.5 <br />E-ZO <br />Total dtachame to marsh <br />DRAIN1a.xis/NCSL(30%Design) (E) <br />E <br />